Hydrometry in sewer systems

Size: px
Start display at page:

Download "Hydrometry in sewer systems"

Transcription

1 Symposium on Measuring Techniques in Hydraulic Research I Delft I Apri/1985 Hydrometry in sewer systems 1. Design and operation of a measuring network for urban hydrology on a small catchment in Brussels J.J.Petersl, A.Van Der Bekenl & A.Vanslambrouckl 2. Application of real time techniques in the Brussels sewer system J.M.Hiver2 & J.J.Peters2 3. Reliability of hydraulic field systems in sewers: Intercomparison of instruments A.BrulP, J.J.Petersl,2, J.M.Vandenbergh2 & A.Vanslambrouckl Abstract : Several research projects in urban hydrology were recently started in Belgium. This paper contains three parts. The first part deals with a hydrologic telemetry network installed on the Campus of the Free University of Brussels (VUB). It compri ses a meteorological station, a set of hydraulic sensors installed in the rainwater drainage system, including a stormwater reservoir, and water samplers. Equipment is actually under completion. The second part of the paper deals with a telemetry system for quantity and quality measurements, placed in the sewersystem of the Northern part of the Brussels Region. Due to the complexity of this network, 19 hydraulic gauging stations were required in a first stage, containing water level or waterflow gauges. In addition, quality measurements are conducted by the Free University of Brussels (ULB). The whole system is linked with a central computer by means of four teletransmission substations. The third part of the paper treats with the results of an intercomparison between hydrometric instruments for sewers, jointly runned by the VUB, the LRHCh and the CRR-OCW. A market analysis allowed the selection of instruments best suited for sewers. Tables summari zing the results of this survey are presented. Pn intercalibration test was conducted during at least six months on seven instruments of various trade marks and different working principles. Abstract : Plusieurs recherches sont entreprises en Belgique dans le domaine de l'hydrologie urbaine - L'article comporte trois parties. La premiere presente un reseau de mesures hydrologiques teletransmises si tue sur le Campus de la Vrije Universi tei t Brussel (VUB). Il comporte une station meteorologique, un ensemble de capteurs hydrauliques installes dans le res eau de collecte des eaux de pluie, y compris le bassin d ' orage, et des echantillonneurs d'eaux. La phase d'installation s' acheve actuellement. La deuxieme partie presente un res eau de' mesures hydraullques et de qualite teletransmises, installe dans le systeme de collecteurs (reseau unitaire) de la partie Nord de la Region Bruxelloise. La complexite de ce systeme necessitait!'installation, en premiere phase, de 19 stations de mesures hydrauliques comportant soi t des capteurs de ni veau, soi t des capteurs de vi tesse d' eau. Le reseau est complete par des mesures de la qualite des eaux, prises en charge par 1' Uni versi te Lib re de Bruxelles (ULB). L' ensemble est re lie a un ordinateur par 1' intermediaire de quatre sous-stations de telet.ransmission. La troisieme par tie presente les resultats d'une intercomparaison d'appareils hydrometriques pour egouts effectuee conjointement par la VUB, le LRHCh et le CRR-OCW. Une etude de marche a permis de selectionner les appareils les mieux adaptes aux conditions rencontrees dans les egouts. Les tableaux resumes de cette analyse sont presentes. Une experience d'intercalibration a ete menee pendant plus de six mois sur sept appareils de marque et de principe de fonctionnement different. 1Department of Hydrology, Free University of Brussels, Belgiu:n; '-Hydraulic Research Laboratory Chatelet, Belgium; 1Road Research Center, Brussels, Belgium 193

2 1. Design and operation of a measuring network for urban hydrology on a small catchment in Brussels The Hydrol ogy Department of the Free Universit y of Brussels, Belgium, started in 1981 with the installation of a telemetry network, on the sewer system of the Campus. The main characteristics of the sewer system are total drained area 22 ha impervious area 1,5 ha total l ength conduits 28 m slope conduits 3 % diameters conduits,4-1, 2 m rainfall design intensity 233 1/sec/ha for 1 min (T 1 year) I MS 1 k 1St k 15.2 k tsj : CONDUIT : WATERFLOW k S.2 : NANHOL 5.2 : STORAGE BASIN : INVERTED SYPHON grmraol jo(.quts l.un k17.2 k lb 1 ku S,T l MS : WEIR : BUILDING S,T : INTE LLIGE NT MEASURING STATION Figure 1 Plan view of the sewer system and location of the measuring stations-campus Free University Brussels (VUB). The rain drainage system is connected with the Brussels sewer network through a bottleneck l imiting the discharge to 428 1/sec. In case of hi gh flow, t he exceeding discharge is diverted to a stormwaterreservoir by means of a weir. This storage basin is located just upstream th bottleneck at manhole K 3.2. Its ximum capacity amounts 29 m, with a storage-coefficient of 166 m /m. A l ack of co-ordination between several departments resulted in the construction of an inverted syphon at the crossing of a main pipe and a technical tunnel. The influence of this structure on the flow was not investigated. After a flooding in 1977 which inundated the basements of the 194

3 administration building, just before completion of the stormwaterreservoir, it was decided to start an hydrologic and hydraulic study of the Campus catchment. The telemetry network consists of four independent "Intelligent Measuring Stations" (IMS), each of them operating several instruments and in telemetry connected to a mini-computer NCR- Tower INSTRUMENTS IrlTELLIGF.NT MEASURING STATIONS g,. tel('phone wire,----'------,/ PRiflTE R AND Pl.OM'ER (' TERMINAL ' J CDC - COMPUTER Figure 2 Structure of the telemetry network. IMS 1 meteorological station, collects data about rainfall, windvelocity, radiation, air pressure, air temperature and air humidity. IMS 2 situated at manhole K 3. 2, collects data about watervelocity in the bottleneck, water levels in manhole K 3. 2 and storage reservoir, *waterlevel ink 4. 3 (downstream the inver ted syphon). *IMS 3 and 4 :for waterlevel measur ements near the manholes K 9.2 and K 5.2 and upstream the inverted syphon. This network will allow : 1) a hydraulic survey of the sewer system; 2) calibration of a rainfall- runoff and routing model, further study of the Runoff Block and EXTRAN, both subroutines of SWMM; 3) survey about erosion and sedimentation phenomena in the conduits and the inverted syphon; 4) a better knowledge of the behaviour of the sewersystem, which will lead to a control strategy. * not yet operation"l 195

4 The data are stored in a database and will be used as input for mathematical models. The programs ILSD and EXTRAN were already tested; it was attempted to include the inverted syphon in the calculations. The flow in the bottleneck is the most difficult parameter to determine. Because of the high cost, an electromagnetic flowmeter could not be installed. An electromagnetic currentmeter was placed in the center of the pipe, only allowing determination of high flow. The selection of the hydrometric instruments was based on a joint survey discussed in part 3 of this paper. 2. Application of real time techniques in the Brussels sewer system In 1982, the Hydraulic Research Laboratory-Section Chatelet ( LRHCh), started a thorough hydraulic survey of the Northern sewersystem in Brussels. This was required for the development of a control strategy in view of the management of the network and the watertreatment plant to be constructed. The structure of this network is very complex, combining sub- and supercritical flow conditions in a system where sewers, rivers and a canal are linked. In some areas, inundations occur repeatedly. (Figure 3) Experience on flow gauging was already acquired during a previous study of the Southern part of the Brussels sewersystem with in situ measurements and local data acquisition. On the basis of this experience, it was decided to equip the Northern part with a telemetry system for quantity and quality measurements. The teletransmission system was constructed along a cable fitted to the ceiling of the 12 km long main pipe. 19 flow gauging stations were selected, equiped and connected to four telemetry substations and to the central processing unit. On the base of previous experiences gained in the Brussels sewersystem, several types of waterlevel gauges were acquired and installed on one single site. In total, seven instruments were tested for at least six months. The continuous record of the signals made possible an intercalibration and an analysis of errors and defects, allowing the selection of the two types of instruments best suited : the pressure probe and the ultrasonic probe. Other gauging stations will be equiped later. A joined study of available hydrometric instruments for sewers was conducted in cooperation with the Free University of Brussels ( VUB) and the Belgian Road Research Centre (OCW-CRR), it is presented in part 3 of this paper. In most of the stations, a stage-discharge relationship can be established. The highly unsteady and non-uniform flow occuring in some stations requires a continuous gauging with the velocity-area method. The continuous measurement of a flow velocity is almost impossible with the existing instruments. Therefore a new instrument was invented to detect the surface velocity. It consists of a paddl-wheel mounted on a catamaran-type float. The rotation speed is converted into an analog outputsignal and the direction of the flow can be observed. The instrument is calibrated with "in si tu" measurements using other techniques, and the measured velocity must be multiplied by an experimental coefficient in order to obtain the cross sectional averaged velocity. Two prototypes were tested until now. The main working problems are related to the clogging of sewage on the paddles. Different designs of the paddle wheels were examined.(figure 4) 196

5 The installed telemetry network for quantity and quality measurements wi ll permit the analysis of the hydraulic behaviour and of the pollution load during normal periods and during storms. This survey will result in proposals about the modifications of the networ k, inc luding the structures regulating the overflow to t he river or the canal. The data collected at the gauging stations will serve as input for a rainfall-runoff, flow routing and other models. 3. Reliability of hydraulic field system in sewers intercomparison of instruments The reliability of fieldsystems is strongly related to that of the instruments used. Most of the available instruments were not designed for use in sewer systems. The Hydraulic Research Laboratory - Section of Chatelet (LRHCh) (Ministry of Public Works), the Department of Hydrology of the Free University of Brussels (VUB) and the Belgian Road Research Center (OCW-CRR) in Brussels organized a joined survey of the instruments actually available in Belgium and suited for installation in sewers : 1) water level measurements types pressure probe ultrasonic probe bubble gauge dipping probe 2 ) watervelocity measurements types : e lectromagnetic doppler 3) portable watersamplers. For each type of instrument, a questionnaire was sent to the companies, inqu1r1ng the technical s pecificat i ons. The information was arranged i nto summarizing tables. (Tables 1 to 5). For the pressure probes, special attention was pa id to the possible teletransmission of data. Therefore an analog output 4-2 ma is best suited because of the possibility to check the probe failures. Other important characteristics are the pressure compensation system, the enclosure, the precision, the power supply, the maximum distance between transducer and transmitter and the price. For the ultrasonic probes, the ultrasonic frequency, the beamwidth, the accuracy, the m1n1mum distance between transducer and watersurface and the integrationtime are considered to be the most important parameters. If a bubble gauge is used for level measurements, important criteria are the maximum length of the t ube, the presence of an output signal and the autonomy of the installation by means of gas supply or compressor. For the portable watersamplers, special attention was paid to the maximum suction head, the autonomy and the possibility for time- or flow proportional sampling. Tables 1 to 5 are based on the technical information collected between April 1984 and December 1984 (written and oral communications). Prices are valid for Belgium and date back to the period mentionned (Information under reserve). 197

6 BEYS.EGHEH L \.1---V,... PONT DE BIJOA HAREN- EMISSA\RE ::::::::::::: OEV. NOUVEAU MAELBEEK HOLLEBEEK,..;:t;,..., KERKEBEEK NOUVEAU MA LBf K HOLENBEEK "-. \.t---v ANCIEN MAELBEEK ::::= PONT TEICHM AN ORO I l---- OEV. RAHE URS I 11 DEV. GLIBERT P. U, > z... V1.. u ic ;:l '--- PARUCK.LR H j a s o2 'r---y LIAISENNE-CAN R FLANDRE PORT DE NINOVE R FABRIO.UES li- ::t:....,...--,---'--+ t:i * '-V '-;;3 ::: V - "i' 5 :r: ;j_ xi PORTE - O"ANOERLECHT I CH DE ' MONS [::: f<j Vanne:!. segment!. GA LERIE DE CURAGE L'l EVAC. ONUION EVAC tpoitte Dl'.}w: [VAC T Gill f4 CHAMBRE EVAC. FONSIIY DE CHASSE R. DES VETE RI NA IRE z.. z p 'V Z>.ui " > BOULEVAR D BOT ANIQUE INVERTED SY PHON + MOTORIZED GA TE +-*- --.\ I..:::!' ' I I CROSSING -,- NON RETURN VALVE?UMPING STATION WEIR JONCT ION PORT[ DE HAL ST Gll les fonsny Figure 3 Brussels sewer system, 198

7 Figure 4 Prototype of paddle-wheel current meter (LRHCh). The telemetry systems runned by the institutions involved in this paper (VUB, LRHCh, CRR-OCW) are in their early state of development. Nevertheless, it is already possible to formulate some concluions : 1. Most of the hydrometric instruments are not designed or suited for measurements in sewers. 2. The technical information provided by the companies about the instrumentation was sometimes found to be misleading, inaccurate or even erroneous ("flow gauge" indicated for a water level gauge). 3. The installation of the probes or sensors is often difficult, in some cases impossible due to the size or shape of the sewers (measurement of a dynamic instead of a static pressure if the probe is not correctly oriented; effect of sedimentation etc... ). 4. The instruments and probes are not always waterproof and resistant to the agressive atmosphere encountered in some sewers. 5. There is already a standardisation of the analog output of many instruments : 4-2 ma, best suited for teletransmission. 6. There is an urgent need for development of instruments for telemetry which must be - robust, because of the harsh working conditions - simple, the signal being processed in a central microprocessor or computer, - cheap, (obviously) - easy to maintain. Our experience learns that the cheapest instruments are often the most reliable. Some of them are installed already for sometimes more then two years, working correctly without requiring special maintenance. For the water level gauges, the pressure probe and bubble gauge are the most satisfactory. Mist in the atmosphere, foam at the water surface, electrical influences are often responsible for the malfunction of the ultrasonic probe. Other water level gauges such as dipping probes, float gauges etc... are difficult. to instal. Most of the current meters cannot be used in telemetry because of the solid or soluble wastes carried by the water. Attempts are made by the CRR-OCW to use electromagnetic probes mounted on a small sill on the bottom. Encouraging results were obtained, even if sediment is transported in the sewer. It is however difficult to detemine the coefficient needed to convert the measured velocity in a cross sectional velocity, which vary also with the flow rate. 199

8 -- - TABLE 1 L.L.. A B [ D E F G LEVEL MEASUREMENTS TRANSDUCER e. w.. $ :I:... z <( w => 1- <( ffi.. z 2 1- <( 8... <>. PRESSURE PROBE TRANSMITTER 1- z: I => i_:_ Q.... Jr mv <>. y ma,,, 1 r-- - ] _o_,1_-+_,_.,_of t--'-' o_o_o -+-+-=!.:c:o=+---+' --"+- 2 S,75 11,5,11,1-2to a 3 r ;. - ;5-,; -;,- -;, - - ;;;5 ;eo,;t- - - t- t ,. J-- J ,1 OtoSO 67,6 ;:!2Y = 2t12 o:;,-..:._r--- 2',1 OtoSO 67,6 b I S 7,5 f--- --rb 2 s 7, b 3 s 3,5 f- f b 4 7,5 ' 1 ' 2 -f-- 1' 2' d 1 I t-- t--- 2 I 1 1to4 32 1to4 32 1to5 3 - I 1to5 57 1to1 1to5 4,12,5 54to ).13 --t ---t--t----t !2v r---,23 o.s fst l1.9s r--,21,5 to11,67 *. 35,413 4 _ 2 Q. 1- J J - - J f t - r r--,5-1to ,SU 1,l 1,!,6,6,5 1to r- o,s 1taSO 67 * D.3 2Sto ,) 2Sto7 67 6,1,25 Oto43 67 _ o - -4to , P 4,2 32,2,5 Olo p 4,2 )2,2,5 to j Vl <( >: TECHNIC 2 WIRES TECHNIC 2 WIRES OJUITAL OUTPUT DIGITAL OUTPUT m-r r _ --,65 H -Sv ti ,3 o.6s m o-s. i: 26. Yl( O ZQ 47,415 -!! tf.,;;;2:-t---: r--,-- 22o O,l PRICE WITH TRANSDUCER,12 2.$- vac :1v 4-2 PRICE WITH TRANSDUCER fo-U " 1 57,5,5 1to , ,5 H h 1 1,6 Oto6 611 ss 28J) vac _ K L,4-51oJO 68 j., _,,... k ),1 Oto'O 611 I 1 2S,5-11to v de o-s o o,5 12 -IOV ,,, 24,,, 19-) ,25 2 legend measuring principle * yes o = option s I straingauge inductive n = no P C = capacitive, piezoresistive 2

9 :. I( G"l( -n(,...,, Cl ( n l c:ol >I :; I >'l )> F I R M t-< t>1 M A R K TYPE TRANSDUCER I TYPE TRANSMITTER f"t1 :; :; :; ULTRASONIC FREO.. (khzl - < f"t1 - BEAMWIDTH ( 1 I p MEASURING RANGE (m) :;: " "!!; :;: 3: ::: f"t " - - w t. i i " - c. MIN. DIST. WATER lml )> )> :z ;., - ACCURACY 1%1 Vl (/'I >I.'1 >I ;. 11 Cl c. TEMPERATURE RANGE ( f () c ::: o; o; " " n f"t1 - - N , WEIGHT TRANSDUCER (kg) m 3: ::: f"t1 t:: 't' 't' 3: 3: 3: 't' g; g; t:: t:: t:: ENCLOSURE Up! z I I g I I '-' I I I I; I P R I C E I Fr I I I Vl N g 1 11: 1. ::- = <li INTEGRA TIONTIME!sec) ::: c f on on on POWER SUPPLY )> I :z l I i; - - < (/'I J :::: 3. 1 I OUTPUT 3: )> 1! d:: ::: ::: g, )> Vl - WEIGHT (kg) m PRICE! Fr l ::: i z I I I I I - I I I i I I I I o l H I I I 8 I I I I I I I g I I g I I li I I :l I I I I I :l I --1 (I MAX. DISTANCE TRANSDUCER TRANSMITTER (m) " :::: OJ f"t1 1\)

10 TABLE 3 LEVEL MEASUREMENTS. BUBBLE GA UGE.5 GAS SPPL Y " CO u >- ::::> - w.. L: z " :>::; >- BOTT LE S.t z ii" z.. ::::> " < ::::> <.. c - VJ ::::> ::: Cl.. VJ < :5 w VJ < >- z " >: u - ::::> ii" 3 -" >- >: >- >- >- :o:- - ::::> < :r: < " ::::> o.:q VJ L.1.. >: VJ 5.. z.. >: c :5 3 Cl.. Cl.. >- 8 >: ::::> E A ' B b 1-8 <1 loo -25'to6' c ' E <1 loo -2' to5 D d 1 -l,s 1,5 5-45' :X < >: V m A ;c22-11 J6 vdc24 YIC22 vdc6 vac22-11 Oo-1 Oo-" 11. vdc bar vac22-2 vdt :;- Cl.. < - -5, loo -1 lo4' vdc6 lot. 2bar 2-7.S 1t. 2 loo -1'1o4' vdc6 2bar -2 X RECORDER 6 X X R[COROER RECORDER REMARKS F f 1-1,5 <1 15 -Wto3' vac X [j v" ? -2'to8 X vdc24 lo - 2 H vac22 h ' to 4' vac X = option X =present TABLE 4 LEVEL MEASUREMENTS DIPPING PROBES A., -l 2'/, Oto5' vdc12 vac B b, -l 2'/, -to toso vdc

11 TABLE 5 WATER VELOCITY MEASUREMENTS E =ELECTROMAGNETIC =DOPPLER f- 8 t ::> '. Vl.. f- - z :::; ::>.t >: <.. - z ;:::.... a::: < z ::> t; Vl w < >- < ;::: ::> - z < f- - >: < >- 3 Q_ u. ::> b3 ffi w < ;;; A. [1 Vl < f- Q_.. >: >- V m A REMARKS -J 2-6" -65 vdt4,5 O-s: PORT ABLE flow HflER E " t.-:u vdc VELOCITY I LEVEL SENSOR B.2" b [ " -43 vdc9, , DIGITAL OUTPUT 4" ( t [1 -J - s - -4' vac ,815 RECORDER G-1.5 d 1, vac vdc DIGITAl OUTPUT 2, ' 6 vac DIGITAl OUTPUT -1 Bibliography DERIEMAEKER, L. (1981). Intelligent meetstation deel II : Dagelijks protokol om de gegevens te bekomen. Analyse van de gecodeerde gegevens. VUB, dienst Hydrologie, november 1981, 14 p. HIVER, J-M., VANDENBERGH, J - M. (1983). Etude de faisabilite relative a gestion automatisee du futur systeme d'assainissement du nord de la region bruxelloise. Rapport interne du Laboratoire de Recherches Hydrauliques, section de Chatelet, aout 1983, 13 p. Intelligente meetpost. Deel I: Apparatuur en electronica. (198). VUB, Dienst Hydrologie, april 198, 39 p. La conception, le calcul et la gestion des reseaux d'egouts. Journee d'etude 5 decembre Annales du ministere des travaux publics. (En preparation) PETERS, J.J., HIVER, J - M (1985) Etude de faisabilite relative a la gestion automatisee du futur systeme d'assainissement du nord de la region bruxelloise. Rapport interne du Laboratoire de Recherches Hydraul iques, section de Chatelet, mars VAN DER BEKEN, A., MARIVOET, J., DERIEMAEKER, L. (1983 ). Real time metingen van hydrologische vari abelen, voordracht gehouden op T- dag, Telematika Antwerpen, 7 november VUB, dienst Hydrologie, 15 p. 23

Hydraulic efficiency of macro-inlets

Hydraulic efficiency of macro-inlets Hydraulic efficiency of macro-inlets Efficacité hydraulique des grands avaloirs à grilles Manuel Gómez Valentín, Beniamino Russo FLUMEN Research Group Technical University of Catalonia, Jordi Girona 1-3,

More information

Analysis of some velocity-area methods for calculating open channel flow

Analysis of some velocity-area methods for calculating open channel flow Hydrological Sciences - Journal - des Sciences Hydrologiques, 33,3, 6/988 Analysis of some velocity-area methods for calculating open channel flow INTRODUCTION JOÂO NUNO fflpôllto Instituto Superior Técnico,

More information

Module 6 : Quantity Estimation of Storm Water. Lecture 6 : Quantity Estimation of Storm Water

Module 6 : Quantity Estimation of Storm Water. Lecture 6 : Quantity Estimation of Storm Water 1 P age Module 6 : Quantity Estimation of Storm Water Lecture 6 : Quantity Estimation of Storm Water 2 P age 6.1 Factors Affecting the Quantity of Stormwater The surface run-off resulting after precipitation

More information

Eau de pluie, pollution source non-ponctuelle, modèle de bassin versant MGEP (SWMM), pollutogramme, contrôle automatique

Eau de pluie, pollution source non-ponctuelle, modèle de bassin versant MGEP (SWMM), pollutogramme, contrôle automatique NOVATECH Development of an Automatic Monitoring System for the Assessment of Urban Wet-Weather Discharge in the DTV (Daedeok Techno Valley), Daejeon, Korea Développement d'un système automatique de surveillance

More information

CHAPTER 3 STORM DRAINAGE SYSTEMS

CHAPTER 3 STORM DRAINAGE SYSTEMS CHAPTER 3 STORM DRAINAGE SYSTEMS 3.7 Storm Drains 3.7.1 Introduction After the tentative locations of inlets, drain pipes, and outfalls with tail-waters have been determined and the inlets sized, the next

More information

Risk and vulnerability assessment of the build environment in a dynamic changing society

Risk and vulnerability assessment of the build environment in a dynamic changing society Risk and vulnerability assessment of the build environment in a dynamic changing society Limnei Nie SINTEF Building and infrastructure, P.O.Box 124 Blindern, NO-0314 Oslo, Norway. linmei.nie@sintef.no

More information

Utilizing Furukawa Optical Fiber Technology. Optical Fiber Sensing System

Utilizing Furukawa Optical Fiber Technology. Optical Fiber Sensing System Utilizing Furukawa Optical Fiber Technology Optical Fiber Sensing Point Special features of optical fiber sensing s 1Reduced installation cost Sensors (measurement location) require no electrical work

More information

LLB-OCMFM 2000 PORTABLE DOPPLER AREA-VELOCITY FLOWMETER

LLB-OCMFM 2000 PORTABLE DOPPLER AREA-VELOCITY FLOWMETER LLB-OCMFM 2000 PORTABLE DOPPLER AREA-VELOCITY FLOWMETER System for flow measurement, data acquisition and transmission for wastewater with long battery life With Long Life Battery Open Channel Flow Meter

More information

Storm Drainage Systems 11.9-1

Storm Drainage Systems 11.9-1 Storm Drainage Systems 11.9-1 11.9 Gutter Flow Calculations 11.9.1 Introduction Gutter flow calculations are necessary in order to relate the quantity of flow (Q) in the curbed channel to the spread of

More information

Water jetting for sewer cleansing. First experimental results for efficiency in noncohesive

Water jetting for sewer cleansing. First experimental results for efficiency in noncohesive Water jetting for sewer cleansing. First experimental results for efficiency in noncohesive sediment removal. Le curage des réseaux par hydrojets: Premiers résultats expérimentaux sur l efficacité de l'enlèvement

More information

Particle Time of Flight: Reflections on Gas Flow Measurement in Hazardous Environments

Particle Time of Flight: Reflections on Gas Flow Measurement in Hazardous Environments 1 Abstract The goal of this project was to create precise optical flow meters for the oil & gas industry optimized for measuring flare gas flow in explosive atmospheres. The flow meters had to incorporate

More information

Flow Like An Egyptian: The Basics of Open channel flow

Flow Like An Egyptian: The Basics of Open channel flow Flow Like An Egyptian: The Basics of Open channel flow Walt Boyes,as ISA Life Fellow, Fellow of InstMC, Chartered Measurement and Control Technologist, Editor of Control and ControlGlobal.com and principal

More information

Tracking the Flow: Meeting the Challenge of Open- Channel Flow Measurement in Municipal Applications

Tracking the Flow: Meeting the Challenge of Open- Channel Flow Measurement in Municipal Applications Tracking the Flow: Meeting the Challenge of Open- Channel Flow Measurement in Municipal Applications By Jeff Smith Source: Primary Flow Signal, Inc. Open channels can be tough to measure but careful attention

More information

Open Channel & Partially Filled Pipe Ultrasonic Flow Meters

Open Channel & Partially Filled Pipe Ultrasonic Flow Meters Open Channel & Partially Filled Pipe Ultrasonic Flow Meters DYNAMETERS series DMDF-OP has three types as below: DMDF-OP-A for partially filled pipe application; DMDF-OP-B for partially filled pipe, channel

More information

Sanitary Sewer Overflows Leave Telltale Signs in Depth-Velocity Scattergraphs

Sanitary Sewer Overflows Leave Telltale Signs in Depth-Velocity Scattergraphs Sanitary Sewer Overflows Leave Telltale Signs in Depth-Velocity Scattergraphs Patrick L. Stevens and Heather M. Sands ADS Environmental Services, Inc., Indianapolis, Indiana Sanitary sewer overflows (SSOs)

More information

INLINE flowmeter for continuous flow measurement

INLINE flowmeter for continuous flow measurement INLINE flowmeter for continuous flow measurement Economic integration in pipe systems without any additional piping 3-wire frequency pulse version to directly interface with PLC s (both PNP and NPN) Connection

More information

HYDROMETEOROLOGICAL AND MONITORING SERVICE

HYDROMETEOROLOGICAL AND MONITORING SERVICE Regional Association VI, Forum Hydrology, Koblenz May 8 10, 2012 MINISTRY OF EMERGENCY SITUATIONS OF ARMENIA ARMENIAN STATE HYDROMETEOROLOGICAL AND MONITORING SERVICE Amalya Misakyan THE STRUCTURE OF ARMSTATEHYDROMET

More information

Grant Agreement No. 228296 SFERA. Solar Facilities for the European Research Area SEVENTH FRAMEWORK PROGRAMME. Capacities Specific Programme

Grant Agreement No. 228296 SFERA. Solar Facilities for the European Research Area SEVENTH FRAMEWORK PROGRAMME. Capacities Specific Programme Grant Agreement No. 228296 SFERA Solar Facilities for the European Research Area SEVENTH FRAMEWORK PROGRAMME Capacities Specific Programme Research Infrastructures Integrating Activity - Combination of

More information

Sample DEQ Plan Submitter s Checklist for Stormwater Management Plans

Sample DEQ Plan Submitter s Checklist for Stormwater Management Plans APPENDIX IV Version: February 2, 2015 Sample DEQ Plan Submitter s Checklist for Stormwater Management Plans Please fill in all blanks and please reference the plan sheets/pages where the information may

More information

AD511 Active Iridium Antenna User Manual Mar 12 V4.0

AD511 Active Iridium Antenna User Manual Mar 12 V4.0 AD511 Active Iridium Antenna User Manual Mar 12 V4.0 AD511 Active Iridium Transmitter/Receiver Antenna with up to 160 metres of coaxial down-lead and DC Power Break-In Box for Iridium Satellite Systems

More information

Sewerage Management System for Reduction of River Pollution

Sewerage Management System for Reduction of River Pollution Sewerage Management System for Reduction of River Pollution Peter Hartwig Germany Content page: 1 Introduction 1 2 Total emissions 3 3 Discharge from the wastewater treatment plants 4 4 Discharge from

More information

THERMAL ANEMOMETRY ELECTRONICS, SOFTWARE AND ACCESSORIES

THERMAL ANEMOMETRY ELECTRONICS, SOFTWARE AND ACCESSORIES TSI and TSI logo are registered trademarks of TSI Incorporated. SmartTune is a trademark of TSI Incorporated. THERMAL ANEMOMETRY ELECTRONICS, SOFTWARE AND ACCESSORIES IFA 300 Constant Temperature Anemometry

More information

Modelling of Urban Flooding in Dhaka City

Modelling of Urban Flooding in Dhaka City Modelling of Urban Flooding in Dhaka City Chusit Apirumanekul*, Ole Mark* *Water Engineering & Management, Asian Inst. of Technology, PO Box 4, Klong Luang, Pathumthani 12120, Thailand Abstract Flooding

More information

Open channel & partially filled pipe Ultrasonic flow meters

Open channel & partially filled pipe Ultrasonic flow meters Open channel & partially filled pipe Ultrasonic flow meters SUITABLE FOR PARTIALLY FILLED PIPES AND OPEN CHANNEL FAMOUS PROFESIONAL ULTRASONIC FLOWMETERS MANUFACTURER, ADVANCED TECHNOLOGY, SERIES PARTIALLY

More information

Application and results of automatic validation of sewer monitoring data

Application and results of automatic validation of sewer monitoring data Application and results of automatic validation of sewer monitoring data M. van Bijnen 1,3 * and H. Korving 2,3 1 Gemeente Utrecht, P.O. Box 8375, 3503 RJ, Utrecht, The Netherlands 2 Witteveen+Bos Consulting

More information

O C M III. Open Channel Flow Monitor

O C M III. Open Channel Flow Monitor O C M III Open Channel Flow Monitor Part 1. General 1.1 Scope A. This section describes the requirements for an ultrasonic flow transmitter with sensor and temperature compensation probe. B. Under this

More information

Ruissellement du Bassin Précipitation Abstractions Hydrogramme Flux de Base. Superposition Routage

Ruissellement du Bassin Précipitation Abstractions Hydrogramme Flux de Base. Superposition Routage HEC-1 Leçon 11 This lesson will focus on how WMS can be used to develop HEC-1 modeling parameters and not on the fundamental hydrologic principles simulated by HEC-1. 1 Vue D Emsemble Utilisés Couramment

More information

713 Open Channel Flowmeter and Transmitter. All-in-one package for open channel flow measurement.

713 Open Channel Flowmeter and Transmitter. All-in-one package for open channel flow measurement. and Transmitter All-in-one package for open channel flow measurement. 3.1 NEW Class 1, Division 1 Approved Sensor As our products are continuously improved, we reserve the right to make any change in the

More information

CSO Modelling Considering Moving Storms and Tipping Bucket Gauge Failures M. Hochedlinger 1 *, W. Sprung 2,3, H. Kainz 3 and K.

CSO Modelling Considering Moving Storms and Tipping Bucket Gauge Failures M. Hochedlinger 1 *, W. Sprung 2,3, H. Kainz 3 and K. CSO Modelling Considering Moving Storms and Tipping Bucket Gauge Failures M. Hochedlinger 1 *, W. Sprung,, H. Kainz and K. König 1 Linz AG Wastewater, Wiener Straße 151, A-41 Linz, Austria Municipality

More information

HOW-TO GUIDE FOR STORMWATER MONITORING

HOW-TO GUIDE FOR STORMWATER MONITORING White Paper January 2014 by Kevin Simpson HOW-TO GUIDE FOR STORMWATER MONITORING The Dos, Don ts and Must Haves! Stormwater monitoring doesn t have to be a headache for your organization. With proper site,

More information

Understanding the Flo-Dar Flow Measuring System

Understanding the Flo-Dar Flow Measuring System Understanding the Flo-Dar Flow Measuring System Independent tests verify non-contact flowmeter is highly accurate under both open channel and surcharge conditions TM Flo-Dar is the only non-contact open

More information

Sanitary Sewer Overflow (SSO) Incident Report Form

Sanitary Sewer Overflow (SSO) Incident Report Form Submit completed form to EHS. Date of SSO spill: Sanitary Sewer Overflow (SSO) Incident Report Form Identify the SSO category (check one): Category 1 SSO Spills of any volume that reach surface water Category

More information

2.24. Pump Controller 704. Data Sheet

2.24. Pump Controller 704. Data Sheet Pump Controller 704 2.24 There are several reasons to choose an MJK pump controller. Pump controller 704, as described in this data sheet, was introduced in 1989. It has been updated several times with

More information

T U R B I N E G A S M E T E R

T U R B I N E G A S M E T E R TURBINE GAS METER TURBINE GAS METER CGT 1 2 3 4 5 6 7 Design and function page 2 General technical data page 3 Measurement outputs page 4 Dimensions and weights page 5 Performance page 7 Pressure loss

More information

Vision-based sensors for water cycle

Vision-based sensors for water cycle Vision-based sensors for water cycle 1 1 Motivation The use of redundancy to enhance the understanding of environmental processes is an important aspect that it is hardly dealt with in the bibliography

More information

2.0 BASIC CONCEPTS OF OPEN CHANNEL FLOW MEASUREMENT

2.0 BASIC CONCEPTS OF OPEN CHANNEL FLOW MEASUREMENT 2.0 BASIC CONCEPTS OF OPEN CHANNEL FLOW MEASUREMENT Open channel flow is defined as flow in any channel where the liquid flows with a free surface. Open channel flow is not under pressure; gravity is the

More information

Netherlands Email corresponding author: Jeroen.Kluck@tauw.nl

Netherlands Email corresponding author: Jeroen.Kluck@tauw.nl Modelling and mapping of urban storm water flooding - Communication and prioritizing actions through mapping urban flood resilience Modélisation et cartographie des inondations en zone urbaine : actions

More information

Risk assessment of Sewer Systems

Risk assessment of Sewer Systems Risk assessment of Sewer Systems Analyse des risques dans les réseaux d assainissement Johansen N.B.*, Sørensen S.**, Jacobsen C.***, Adeler O.F.****, Breinholt, A*****. Københavns Energi, Ørestads Boulevard

More information

Typical Aluminum GFM Mass Flow Meter

Typical Aluminum GFM Mass Flow Meter MASS FLOW METERS Design Features n Rigid metallic construction. n Maximum pressure of 1000 psig (70 bars). n Leak integrity 1 x 10-9 of helium. n NIST traceable certification. n Built-in tiltable LCD readout.

More information

Index-Velocity Rating Development (Calibration) for H-ADCP Real-Time Discharge Monitoring in Open Channels

Index-Velocity Rating Development (Calibration) for H-ADCP Real-Time Discharge Monitoring in Open Channels Index-Velocity Rating Development (Calibration) for H-ADCP Real-Time Discharge Monitoring in Open Channels Hening Huang Teledyne RD Instruments, Inc., 14020 Stowe Drive, Poway, CA. 92064, USA (Tel: 858-842-2600,

More information

Training programme on flow measurements

Training programme on flow measurements WMO / OMM Autorite du Bassin du Niger Niger-HYCOS and Volta-HYCOS Projects Training programme on flow measurements 2 nd part : Flow measurement techniques Flow measurements and calculations Definitions

More information

Basement Flood Risk Reduction City of Winnipeg. Charles Boulet

Basement Flood Risk Reduction City of Winnipeg. Charles Boulet Basement Flood Risk Reduction City of Winnipeg Charles Boulet Outline Background Winnipeg Floodway Rain Events Winnipeg Sewer System Basement Flooding Flood Reduction Measures ICLR - BFRR Strategy 2 Where

More information

Electromagnetic Flow Meter

Electromagnetic Flow Meter Electromagnetic Flow Meter Description The EL 2200 series of electromagnetic sensors represent the state of the art for the accurate measurement for water cycle and process applications. Flow meters are

More information

191: Calibration and Standards in Flow Measurement. Richard Paton National Engineering Laboratory, Scotland, UK 1 GENERAL PRINCIPLES

191: Calibration and Standards in Flow Measurement. Richard Paton National Engineering Laboratory, Scotland, UK 1 GENERAL PRINCIPLES 191: Calibration and Standards in Measurement Richard Paton National Engineering Laboratory, Scotland, UK 1 General Principles 1 2 Gravimetric Calibration of Liquid meters 2 3 Volumetric Calibration of

More information

11th International Conference on Urban Drainage, Edinburgh, Scotland, UK, 2008 MONITORING EQUIPMENT AND RESULTS The flow monitoring and sampling programme was conducted over two one week periods, with

More information

MTI10 Insertion and MTL10 In-line Thermal Mass Flowmeter and Temperature Transmitter

MTI10 Insertion and MTL10 In-line Thermal Mass Flowmeter and Temperature Transmitter Thermal Mass meter and Temperature Transmitter Description The MTI10 insertion thermal mass flowmeter and the MTL10 in-line thermal mass flowmeter provide accurate mass flow measurement of clean, dry gases

More information

Flow Measurement Options for Pipeline and Open Channel Flow

Flow Measurement Options for Pipeline and Open Channel Flow Flow Measurement Options for Pipeline and Open Channel Flow October 2013 Presented by Molly Skorpik - 2013 Montana Association of Dam and Canal Systems Conference Irrigation Training and Research Center

More information

Smart Electromagnetic Flowmeter Open channel Flowmeter Detector

Smart Electromagnetic Flowmeter Open channel Flowmeter Detector Magne3000 PLUS Smart Electromagnetic Flowmeter Open channel Flowmeter Detector Model NNK150/951 OVERVIE The Magne3000 PLUS Electromagnetic Flowmeter is submersible type of flowmeter mainly used for flow

More information

REMOTE TELEMETRY UNITS FOR CONTINUOUS WATER QUALITY MONITORING: AN EXAMPLE FROM SILVERSTREAM LANDFILL Mike Millar, Geotechnics Ltd ABSTRACT

REMOTE TELEMETRY UNITS FOR CONTINUOUS WATER QUALITY MONITORING: AN EXAMPLE FROM SILVERSTREAM LANDFILL Mike Millar, Geotechnics Ltd ABSTRACT REMOTE TELEMETRY UNITS FOR CONTINUOUS WATER QUALITY MONITORING: AN EXAMPLE FROM SILVERSTREAM LANDFILL Mike Millar, Geotechnics Ltd ABSTRACT Continuous monitoring of key water quality indicators is becoming

More information

Vallet B.*, Muschalla D.**, Lessard P.* and Vanrolleghem P.A.**

Vallet B.*, Muschalla D.**, Lessard P.* and Vanrolleghem P.A.** NOVATECH 20 A new dynamic stormwater basin model as a tool for management of urban runoff Un nouveau modèle dynamique de bassin d orage comme outil de gestion des eaux de ruissellement urbaines Vallet

More information

FLOOD HAZARD AND RISK ASSESSMENT OF HOANG LONG RIVER BASIN, VIETNAM. Da District, Hanoi, Vietnam 100000, e-mail: vuthanhtu147@gmail.

FLOOD HAZARD AND RISK ASSESSMENT OF HOANG LONG RIVER BASIN, VIETNAM. Da District, Hanoi, Vietnam 100000, e-mail: vuthanhtu147@gmail. FLOOD HAZARD AND RISK ASSESSMENT OF HOANG LONG RIVER BASIN, VIETNAM VU Thanh Tu 1, Tawatchai TINGSANCHALI 2 1 Water Resources University, Assistant Professor, 175 Tay Son Street, Dong Da District, Hanoi,

More information

INFRASTRUCTURE, FLOOD PROTECTION AND REMEDIATION. Infrastructure Flood Protection Remediation Policies

INFRASTRUCTURE, FLOOD PROTECTION AND REMEDIATION. Infrastructure Flood Protection Remediation Policies INFRASTRUCTURE, FLOOD PROTECTION AND REMEDIATION Infrastructure Flood Protection Remediation Policies DRAFT POOLBEG PLANNING SCHEME 196 FIGURE 9.1: UTILITIES WAYLEAVES Electricity Cables 8m Wayleave for

More information

A model-based assessment of infiltration and inflow in the scope of controlling separate sanitary overflows at pumping stations

A model-based assessment of infiltration and inflow in the scope of controlling separate sanitary overflows at pumping stations A model-based assessment of infiltration and inflow in the scope of controlling separate sanitary overflows at pumping stations O. Raynaud 1 *, C. Joannis 1, F. Schoefs 2, F. Billard 3 1 Laboratoire Central

More information

COMBIMASS. Technical Data COMBIMASS eco-bio +

COMBIMASS. Technical Data COMBIMASS eco-bio + COMBIMASS Technical Data THE SYSTEM COMBIMASS The field transmitters of the COMBIMASS eco series are suitable for gas flow measurement and cover a wide range of different applications. The instruments

More information

Recommendations for future developments

Recommendations for future developments C Recommendations for future developments C.1 Reducing flood risk through site layout and design C.1.1 C.1.2 Flood risk should be considered at an early stage in deciding the layout and design of a site

More information

Series DFMT Digital Paddlewheel Flowmeter

Series DFMT Digital Paddlewheel Flowmeter Series DFMT Digital Paddlewheel Flowmeter Bulletin F-DFMT Specifications - Installation Operating Instructions -/8 [00] -/ [8] -/8 [00] A The Series DFMT Digital Paddlewheel Flow Transmitter provides instantaneous

More information

Liquid Flowmeters A Guide for Selecting a Flowmeter for Pressurized Systems

Liquid Flowmeters A Guide for Selecting a Flowmeter for Pressurized Systems Liquid Flowmeters A Guide for Selecting a Flowmeter for Pressurized Systems Selecting a meter requires a first-rate technical assessment of the pressurized system and a thorough evaluation of the capabilities

More information

FLOW SYSTEM flow measurement system in open channels and non-pressurized pipes

FLOW SYSTEM flow measurement system in open channels and non-pressurized pipes FLOW SYSTEM flow measurement system in open channels and non-pressurized pipes The flow measurement in open channels is based on the measurement of the increase in height due to the insertion of a suitable

More information

Practice Tests Answer Keys

Practice Tests Answer Keys Practice Tests Answer Keys COURSE OUTLINE: Module # Name Practice Test included Module 1: Basic Math Refresher Module 2: Fractions, Decimals and Percents Module 3: Measurement Conversions Module 4: Linear,

More information

GSM-EXT Cable Assembly Installation Guide

GSM-EXT Cable Assembly Installation Guide GSM-EXT Cable Assembly Installation Guide For Documentation and Online Support: http://www.security.honeywell.com/hsc/resources/mywebtech General Information The GSM-EXT cable assembly is used to connect

More information

Catchment Scale Processes and River Restoration. Dr Jenny Mant Jenny@therrc.co.uk. The River Restoration Centre therrc.co.uk

Catchment Scale Processes and River Restoration. Dr Jenny Mant Jenny@therrc.co.uk. The River Restoration Centre therrc.co.uk Catchment Scale Processes and River Restoration Dr Jenny Mant Jenny@therrc.co.uk The River Restoration Centre therrc.co.uk 3 Main Catchment Elements Hydrology Energy associated with the flow of water affects

More information

MP-4000 Alarm List (Software version 2.4.3 or later)

MP-4000 Alarm List (Software version 2.4.3 or later) Service Bulletin SUBJECT: MP4000 Alarm s BULLETIN: C 100 DATE: June 19, 2013 ALARM LIST Where it is possible the alarm number is kept the same as for MP-3000. MP-3000 holds alarm number from 0 to 127.

More information

Module 7: Hydraulic Design of Sewers and Storm Water Drains. Lecture 7 : Hydraulic Design of Sewers and Storm Water Drains

Module 7: Hydraulic Design of Sewers and Storm Water Drains. Lecture 7 : Hydraulic Design of Sewers and Storm Water Drains 1 P age Module 7: Hydraulic Design of Sewers and Storm Water Drains Lecture 7 : Hydraulic Design of Sewers and Storm Water Drains 2 P age 7.1 General Consideration Generally, sewers are laid at steeper

More information

JNIOR. Overview. Get Connected. Get Results. JNIOR Model 310. JNIOR Model 312. JNIOR Model 314. JNIOR Model 410

JNIOR. Overview. Get Connected. Get Results. JNIOR Model 310. JNIOR Model 312. JNIOR Model 314. JNIOR Model 410 The INTEG is an Ethernet I/O (digital, analog) device that monitors and controls a small set of process signals. functions as both basic I/O for integration with another application or system AND as a

More information

Michael Montgomery Marketing Product Manager Rosemount Inc. Russ Evans Manager of Engineering and Design Rosemount Inc.

Michael Montgomery Marketing Product Manager Rosemount Inc. Russ Evans Manager of Engineering and Design Rosemount Inc. ASGMT / Averaging Pitot Tube Flow Measurement Michael Montgomery Marketing Product Manager Rosemount Inc. Russ Evans Manager of Engineering and Design Rosemount Inc. Averaging Pitot Tube Meters Introduction

More information

Steven R. McManus Environmental Product Support Teledyne Isco

Steven R. McManus Environmental Product Support Teledyne Isco Steven R. McManus Environmental Product Support Teledyne Isco Flow Measurement Applications and Technologies. Methods of flow measurement Technologies of flow measurement Flow Rate Applications Channel

More information

RÉSUMÉ ABSTRACT KEYWORDS

RÉSUMÉ ABSTRACT KEYWORDS NOVATECH 21 Evaluation of stormwater infiltration performance based on drainage area outlet monitoring Evaluation des performances d'infiltration des eaux pluviales d'un bassin versant par le contrôle

More information

CHAPTER 2 HYDRAULICS OF SEWERS

CHAPTER 2 HYDRAULICS OF SEWERS CHAPTER 2 HYDRAULICS OF SEWERS SANITARY SEWERS The hydraulic design procedure for sewers requires: 1. Determination of Sewer System Type 2. Determination of Design Flow 3. Selection of Pipe Size 4. Determination

More information

Performance Modeling of TCP/IP in a Wide-Area Network

Performance Modeling of TCP/IP in a Wide-Area Network INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE Performance Modeling of TCP/IP in a Wide-Area Network Eitan Altman, Jean Bolot, Philippe Nain, Driss Elouadghiri, Mohammed Erramdani, Patrick

More information

Geoprocessing Tools for Surface and Basement Flooding Analysis in SWMM

Geoprocessing Tools for Surface and Basement Flooding Analysis in SWMM 3 Geoprocessing Tools for Surface and Basement Flooding Analysis in SWMM Eric White, James Knighton, Gary Martens, Matthew Plourde and Rajesh Rajan A geoprocessing routine was used for the development

More information

BM SERIES WAVE COMPACT 6.3 GHZ CW SERIES PULSE RADAR LEVEL INSTRUMENTS (6.3 GHz)

BM SERIES WAVE COMPACT 6.3 GHZ CW SERIES PULSE RADAR LEVEL INSTRUMENTS (6.3 GHz) CW SERIES PULSE RADAR LEVEL INSTRUMENTS (6.3 GHz) DESCRIPTION The Radar Level Meters of BM COMPACT WAVE 6.3 GHz series are excellent devices for no contact level measurement. The microwave impulses, emitted

More information

TELECOMMUNICATIONS LEGISLATION IN PACIFIC COUNTRIES: AN OVERVIEW. Ruiping Ye *

TELECOMMUNICATIONS LEGISLATION IN PACIFIC COUNTRIES: AN OVERVIEW. Ruiping Ye * TELECOMMUNICATIONS LEGISLATION IN PACIFIC COUNTRIES: AN OVERVIEW Ruiping Ye * This paper gives an overview of the telecommunications legislation in Pacific countries, in the form of three charts. Chart

More information

The Flow Regulator. Flow regulation

The Flow Regulator. Flow regulation Flow regulation Overloading in sewerage works and drainage systems can be avoided by using an attenuation reservoir, or by directing flow to a less sensitive area. Automatic flow control in gravity fed

More information

DESCRIPTION OF STORMWATER STRUCTURAL CONTROLS IN MS4 PERMITS

DESCRIPTION OF STORMWATER STRUCTURAL CONTROLS IN MS4 PERMITS DESCRIPTION OF STORMWATER STRUCTURAL CONTROLS IN MS4 PERMITS Phase I MS4 permits require continuous updating of the stormwater system inventory owned and operated by the MS4. They also include inspection

More information

Capteur température et humidité pour HVAC

Capteur température et humidité pour HVAC Capteur température et humidité pour HVAC oct-13 Type R 590 Type R 591 Cable Pvc / Pvc Cable Silicone / Silicone Sonde de température Pt100, Pt1000, Ni1000, KTY, NTC, autres sur demande Classe B ou A Raccordement

More information

MARYLAND AVENUE BACKUPS DURING AUGUST 31, 2014 STORM EVENT COMMUNITY OUTREACH

MARYLAND AVENUE BACKUPS DURING AUGUST 31, 2014 STORM EVENT COMMUNITY OUTREACH MARYLAND AVENUE BACKUPS DURING AUGUST 31, 2014 STORM EVENT COMMUNITY OUTREACH MARYLAND AVENUE BACKUPS COMMUNITY OUTREACH MEETING AGENDA Introductions History of PWSA Actions August 31 Storm Impacts Short

More information

Pervious Pavers. By: Rich Lahren. Hebron Brick & Block Supply

Pervious Pavers. By: Rich Lahren. Hebron Brick & Block Supply Pervious Pavers By: Rich Lahren Hebron Brick & Block Supply Stormwater Management and Control Issues Past emphasis was on flood control Today s emphasis is also on pollution More impermeable areas are

More information

International Centre for Water Hazard and Risk Management, ICHARM Under the auspices of UNESCO. Cheif Researcher Minoru KAMOTO

International Centre for Water Hazard and Risk Management, ICHARM Under the auspices of UNESCO. Cheif Researcher Minoru KAMOTO Hydrological Observation in JAPAN International Centre for Water Hazard and Risk Management, ICHARM Under the auspices of UNESCO Public Works Research Institute Cheif Researcher Minoru KAMOTO Research

More information

WEATHER STATION FOR SOLAR FARM MONITORING

WEATHER STATION FOR SOLAR FARM MONITORING WEATHER STATION FOR SOLAR FARM MONITORING SOLAR FARM MONITORING SYSTEM: Measures global, horizontal, & background irradiance. Measures wind speed, wind direction, ambient temperature, and relative humidity.

More information

Digital inductive conductivity transmitter

Digital inductive conductivity transmitter Digital inductive conductivity transmitter Optimal solution for conductivity measurements in difficult fluids (polluted, dirty,...) PEEK/PPA version for CIP applications Large range of process connections

More information

F ox W hi t e Paper. Reduce Energy Costs and Enhance Emissions Monitoring Systems

F ox W hi t e Paper. Reduce Energy Costs and Enhance Emissions Monitoring Systems F ox W hi t e Paper Reduce Energy Costs and Enhance Emissions Monitoring Systems A Technical White Paper from Fox Thermal Instruments Rich Cada, VP Sales & Marketing, Fox Thermal Instruments, Inc. 399

More information

HYDROVEX. CSO, SSO and Stormwater Management Specialist Products and Services for North America

HYDROVEX. CSO, SSO and Stormwater Management Specialist Products and Services for North America HYDROVEX CSO, SSO and Stormwater Management Specialist Products and Services for North America A long tradition in excellence John Meunier Inc. has been serving North American municipalities and industries

More information

Water Quality in the Fluvial Section

Water Quality in the Fluvial Section WATER SHORELINES SEDIMENTS Water Quality in the Fluvial Section Physicochemical and Bacteriological Parameters 3rd Edition Background The St. Lawrence River is the largest river in Quebec. It is crucial

More information

Disaster Prevention Measures in Global-Local Context 4 th World Water Forum Dr. Yoshihiko Yamashita CTI Engineering Co., Ltd Association of Japanese Consulting Engineers Outline of Presentation Up-to to-date

More information

RAPPORT FINANCIER ANNUEL PORTANT SUR LES COMPTES 2014

RAPPORT FINANCIER ANNUEL PORTANT SUR LES COMPTES 2014 RAPPORT FINANCIER ANNUEL PORTANT SUR LES COMPTES 2014 En application de la loi du Luxembourg du 11 janvier 2008 relative aux obligations de transparence sur les émetteurs de valeurs mobilières. CREDIT

More information

1.- L a m e j o r o p c ió n e s c l o na r e l d i s co ( s e e x p li c a r á d es p u é s ).

1.- L a m e j o r o p c ió n e s c l o na r e l d i s co ( s e e x p li c a r á d es p u é s ). PROCEDIMIENTO DE RECUPERACION Y COPIAS DE SEGURIDAD DEL CORTAFUEGOS LINUX P ar a p od e r re c u p e ra r nu e s t r o c o rt a f u e go s an t e un d es a s t r e ( r ot u r a d e l di s c o o d e l a

More information

Testing flow-meters using a field laboratory

Testing flow-meters using a field laboratory 11 th International Conference on Urban Drainage, Edinburgh, Scotland, UK, 28 J.Smits 1, M.R. Moens 2 *, M. Klootwijk 3, H. van Vliet 4 1 Delft University of Technology, Stevinweg 1, room 4.84, 26GA Delft,

More information

THE THERMAL FLOW METER, A GAS METER FOR ENERGY MEASUREMENT

THE THERMAL FLOW METER, A GAS METER FOR ENERGY MEASUREMENT THE THERMAL FLOW METER, A GAS METER FOR ENERGY MEASUREMENT Kazuto Otakane, Tokyo Gas Co., Ltd Katsuhito Sakai, Tokyo Gas Co., Ltd Minoru Seto, Tokyo Gas Co., Ltd 1. INTRODUCTION Tokyo Gas s new gas meter,

More information

PRSENTATION ON DRAINAGE SYSTEM DELHI 25.07.2014 EAST DELHI MUNICIPAL CORPORATION

PRSENTATION ON DRAINAGE SYSTEM DELHI 25.07.2014 EAST DELHI MUNICIPAL CORPORATION PRSENTATION ON DRAINAGE SYSTEM OF DELHI EAST DELHI MUNICIPAL CORPORATION 25.07.2014 MAP OF DELHI SHOWING MCD s, NDMC & DCB ABOUT DELHI DELHI MANIFESTS UNCONTROLLED URBANISATION POPULATION INDUSTRIALISATION

More information

DIVISION OF WATER QUALITY CONSTRUCTION GRANTS & LOANS SECTION FAST TRACK AUDIT CHECKLIST

DIVISION OF WATER QUALITY CONSTRUCTION GRANTS & LOANS SECTION FAST TRACK AUDIT CHECKLIST DIVISION OF WATER QUALITY CONSTRUCTION GRANTS & LOANS SECTION FAST TRACK AUDIT CHECKLIST CERTIFICATION 1. Did the engineer submit a certificate of completion utilizing the appropriate page of the issued

More information

www.kem-kueppers.com info@kem-kueppers.com Certified according to DIN EN ISO 9001 Technical Datasheet KVO Series Vortex Flow Meter

www.kem-kueppers.com info@kem-kueppers.com Certified according to DIN EN ISO 9001 Technical Datasheet KVO Series Vortex Flow Meter www.kem-kueppers.com Certified according to DIN EN ISO 9001 Technical Datasheet KVO Series Vortex Flow Meter Description The KVO Vortex flow meters utilize two primary sensing elements a vortex shedding

More information

Duct Humidity Transmitter

Duct Humidity Transmitter SDC-H Duct Humidity Transmitter Features Replaceable sensor element Humidity measurement for air ducts Minimum and maximum value memory 0 0V, 0 0mA or 0V, 4 0mA measuring signals selectable with jumpers

More information

STORM DRAINS CHAPTER 7

STORM DRAINS CHAPTER 7 CHAPTER 7 Chapter 7 - Storm Drains A storm drain is a drainage system that conveys water or stormwater, consisting of two or more pipes in a series connected by one or more structures. Storm drains collect

More information

Gas Custody Transfer Calibration

Gas Custody Transfer Calibration Gas Custody Transfer Calibration Using multi variable temperature / pressure calibrators for flowmeter calibration 2013 Introduction Gas custody transfer flow computers require special calibration to perform

More information

Features. Picture. Specifications

Features. Picture. Specifications Type: for level measurement Order No.: see Table 1 / Page 4 Features Picture Two wire system Piezoresistive measuring element Output signal 4-20 ma Conformity error ±0.5 % FS or Standard DIN measuring

More information

Unsteady Pressure Measurements

Unsteady Pressure Measurements Quite often the measurements of pressures has to be conducted in unsteady conditions. Typical cases are those of -the measurement of time-varying pressure (with periodic oscillations or step changes) -the

More information

Product Data. Model 575 Series Submersible Level Transmitters ELECTRONIC PRESSURE MEASUREMENT PRODUCTS DESCRIPTION FEATURES APPLICATIONS

Product Data. Model 575 Series Submersible Level Transmitters ELECTRONIC PRESSURE MEASUREMENT PRODUCTS DESCRIPTION FEATURES APPLICATIONS EPP - 1 DECRIPTION The odel 575 is used in general water/wastewater applications. The transmitter is offered in a standard non-clogging snub nose end, flush diaphragm or protected flush diaphragm with

More information

The Alternatives of Flood Mitigation in The Downstream Area of Mun River Basin

The Alternatives of Flood Mitigation in The Downstream Area of Mun River Basin The Alternatives of Flood Mitigation in The Downstream Area of Mun River Basin Dr.Phattaporn Mekpruksawong 1, Thana Suwattana 2 and Narong Meepayoong 3 1 Senior Civil Engineer, Office of Project Management,

More information

Application and results of automatic validation of sewer monitoring data

Application and results of automatic validation of sewer monitoring data Application and results of automatic validation of sewer monitoring data M. van Bijnen 1,3 * and H. Korving 2,3 1 Gemeente Utrecht, P.O. Box 8375, 3503 RJ, Utrecht, The Netherlands 2 Witteveen+Bos Consulting

More information

DREXELBROOK. USonic-R Series. Ultrasonic Level Measurement System. User Friendly

DREXELBROOK. USonic-R Series. Ultrasonic Level Measurement System. User Friendly DREXELBROOK A Leader In Level Measurement Solutions USonic-R Series Ultrasonic Level Measurement System User Friendly Set the measurement range directly in inches, feet, millimeters, centimeters, or meters

More information