LINE0 autonomous tests by local loggers

Transcription

1 E.Heine Page 1 of 11 Ref : -LCM-18-1A Date : /1/5 LINE autonomous tests version 8 e.heine Objectives: Test a cable (EMC) sample in a real situation. Test the water tightness of the containers Both tests can be performed with or without a connection to the shore. In this paper a solution is presented for an offline test independent of a shore connection. Contents: Overview 1 Logger Install Software Program Logger Readout logger Leakage detection 5 Placing leak detector 6 Leakage detection readout 7 Wiring suggestion 8 Optical power recording 9 Optical power readout 1 Wiring suggestion 1 Actual general wiring schemes 11 Two tests are provided; A leak detector to check water ingress of a container and a cable break. An optical fiber test to check attenuation changing's. The testplan envisages two deployments. The first to see of the deployment procedure is correct by deployment, recovery, back to shore and check all the tinytags. The second to test the cable during several months in the water in situ. There are tests foreseen which need a connection to shore. The here presented tests don t need such a connection. With no connection to shore recovery, reading data and deployment again several times is possible. Tests procedure is as follows; Program the tinytags for the first deployment After recovery of the LINE read all tinytags and program again for the second deployment. After final recovery (after -6mnths) read all the tinytags Send all tiny tags back to K POBox DB Amsterdam 1

2 Page of 11 Ref : -LCM-18-1A Date : /1/5 LINE autonomous tests by local loggers E.Heine Local logger System based on gemini tinytag logger RS connection Sensor system powe by 1V Green status LED Red alarm LED K HEF LINE measurement items / electronic department -1-5 Logger Both tests are based on small logger system, tinytags: representative in The Netherlands; INTAB Benelux (info@intab.nl) Each logger is provided with 8 1.5V batteries (type AA) to achieve a 1V power supply with a charge of.7ah. The system is designed to meet this specification with a use of 6mnth. maximum. The power supply is 8 sec. active for each measurement. NOTE: Whenever the logger is linked to the host computer, the power supply is active. Logger specification overview; Range: -mv maximum input:: 5mV Input impedance:>1 MOhms Resolution:.8mV Accuracy: ±1mV ±.5% of reading Memory Size: 16k (non-volatile) No. of readings: 159 (approx) resolution: 8 bit Delayed start options. -A green status led what will flash: waiting delayed start: flashes every sec. logging: 1 flash (msec) every sec. storing a reading: 1 bright flash (6msec). power up: on for several seconds. Flash current = 6mA For a mission-time of 6 weeks the battery charge will be 5.7 mah for status and with an interval of min..15 mah for store data signal. - alarm led, The logger has two programmable alarms. Both are programmable for: alarm trip point, over or under voltage, latching or not latching, one or two flashes. If both alarms are trigge the LED flashes times. The alarms can be clea and set on/off via the Windows software. My suggestions would be not to use this option to spare the batteries. When the unit stops logging, the LED gives one bright, half second flash. The LED is not normally used at any other time, however if both LED s flash brightly and rapidly together, the unit will not work. Remove and refit the battery. If the problem persists, return the unit for repair. If this will disturb the PMT's in the OM then we have to blind it with adhesive tape. Battery: Alkaline-Manganese Dioxyde PC15 Duracell procell. K HEF POBox DB Amsterdam

3 E.Heine Page of 11 Ref : -LCM-18-1A Date : /1/5 Software After installing the software: 1. Establish the connection with the Tiny tag. Program the tiny logger after stop Withdraw the data after deployment: 1. Established the connection with the Tiny tag. Start off load the data. Store data in a file. Reprogram the tiny logger if necessary LINE measurement items / electronic department -1-5 SOFTWARE to read the TPG-1 recorders Type: Gemini Data Loggers, TinyTag TGPR-1, delive by INTAB Benelux. 1 SYSTEM REQUIREMENTS The minimum system requi is a 86 PC with 8MB of memory, at least 8MB of hard disk space and an SVGA monitor. Higher specification of PC is recommended as the increase in performance will be significant. Microsoft Windows version.11, 95, 98, NT Windows or XP is requi. In order to connect a logger to the PC you will need a spare serial port (9 way D-type connector) and the correct interface cable to connect between the serial port and your data logger. INSTALLATION To install the application first quit all other applications, run SETUP from Windows. The setup procedure may take a few minutes. Open TinyLoggerFlop1 Run: SETUP.EXE Use TinyLoggerFlop for the second part installation. After this installation to make an upgrade install: engupg.exe REMARKS During connected with the PC, measurements will be continuous. Off line, the 1V power is delive ca. 8 sec. before reading the measu value. Approximate 159 readings. 8 bit resolution. PROGRAMMING No alarm settings are programmed to prevent energy. Logging interval for max. 6mnth deployment will be min. at least. POBox DB Amsterdam

4 E.Heine Page of 11 Ref : -LCM-18-1A Date : /1/5 Programming and offload data LINE measurement items / electronic department -1-5 Programming For the first deployment; Program the tinytags with a delay (max. 5 days) before the deployment (period 15--5/15--5) and an interval of 5 minutes (keep the used charge below 1mAh and the number of records below 159). min interval gives 15 records and 5mAh charge is used. The first deployment takes one day in a period of weeks. Readout after a recovery; Make connection with the tinytag. Offload the data (15 records takes 5.5minutes on a Pentium ) Check the graphic presentation for calamities Store the numeric data as.txt file to work out later on shore Reprogram the tinytags without any delay and an interval of minutes (to keep the used charge below 1mAh in fact 5mAh and the number of records below 159 in fact 11) POBox DB Amsterdam

5 E.Heine Page 5 of 11 Ref : -LCM-18-1A Date : /1/5 Indication number on bottom PBS V V5 <mv brown V Leakage detection gnd 1 Rx Tx 1M k BAT17 5 DB9 (on PC) 5 RS only on OM-connector 6 fingers both sides 1mm spacing finger length mm 1k PBS 9.6. OM Cable EMC LCM+1 OM-LCM LCM to LCM-1 6 systems lend by lend by LCM installed at integration Put tinytag indication number and LCM in a database! LINE measurement items / electronic department Leakage detection for the LINE operation. sensors (each container 1). recorders ( TGPL1) with output modulator PCB. Suggestion; Place recorder + modulator in an Optical module, place sensor in a container of an other floor. In this case a EMC break will be detected also. Glue the leak detector PCB with silicon adhesive sealent or double sided adhesive tape to the bottom flange. The leak sensor can used as level indicator too by placing it vertical with the resistor at top. mission time 6wks interval meass/h Vsupply 1V Rserial 1 MOhm Rsensor 1 kohm Rloadmin..kOhm mess. dry sensor ~15mV mess. shorted sensor or cable 6mV mess. open sensor cable mv current during measurement 11.8 µa charge during mission time (6 weeks) number of records 11 Skottky diode as input limiter (BAT17, SMD SOT). At 1µA max. voltage < 5mV. 5 µah BAT17 POBox DB Amsterdam 5

6 E.Heine Page 6 of 11 Ref : -LCM-18-1A Date : /1/5 Placing leak detector mm 5 M 9 degrees 8 mm 8 mm 7 mm Bottom end cap - version D ref.: -LCM-1--A, OM / 1 CTD leakge sensor added (ref: E.Heine), glued to the bottem ( possibilities) LINE measurement items / electronic department The leak detector PCB can be glued to the bottom by silicon adhesive sealent, mastic, or double adhesive glue tape. Self adhesive cable tie mounting bases can be used as cable stress relieve if necessary. The leak detector PCB is gold plated to prevent chemical corrosion processes. mm The other PCB, the modulator, will be glued on the tinytag box together with self adhesive cable tie mounting bases. mm Leak detector PCB Test run: 5 testrun open connection modulator-detector value (mv) 15 1 dry 5 leak 1:16:19 1:19:1 1::5 1::58 1:7:5 1:: 1::6 1:6:9 1:9: 1::1 time shorted connection modulator-detector POBox DB Amsterdam 6

7 E.Heine Page 7 of 11 Ref : -LCM-18-1A Date : /1/5 1V V5 <mv brown V Leakage detection readout gnd 1 Rx Tx 1M k BAT17 5 RS only on OM-connector OM-LCM cable 1k In situ 1V V5 <mv brown V gnd 1 Rx Tx 1M k BAT17 5 DB9 5 COM PC Read out cable 1k In xlcm To test, To program To readout In OM LINE measurement items / electronic department Install issues for the leakage detector The tinytag and the modulator PCB are installed in the OM-. The 5 output wires (RS+sensor) are connected to the connector of the OM. Suggestion; Place recorder + modulator in an Optical module, place sensor in a container of an other floor. In this case a EMC break will be detected also and a sensor can be placed in the SPM/SCM while the recorder is placed in an OM of the first floor. Besides this advantage there will always a measurement over a waterblock, while in the flooded sector the measurements are demolished by the water ingress. The RS signals are connected by the OM-LCM cable to the container too. Water ingress in the container can harm the recorder by shorting these signals (has to be tested). To test, program or readout the recorder the OM-LCM cable has to be replaced or extended by a readout cable to the PC. If, in that case, the open wires of the sensor are terminated with a resistor (f.i. 1kOhm) then an actual test value can be measu instead of the open (mv) value for test purposes. In the actual situation the leakage detector is on the same floor as the tinytag in the optical module. To sense the copper wires of the EMC one pair of wires is connected to a dedicated tinytag on floor. Mnemonic Seawater: 5g salt/liter POBox DB Amsterdam 7

8 E.Heine Page 8 of 11 Ref : -LCM-18-1A Date : /1/5 Wiring suggestion Alternative scheme for LINE tests LCM OM1 OM OM fibres wires floor 5 1 Wiring suggestion scheme for LINE tests LCM OM1 OM OM fibres wires floor floor floor floor 1 floor 5 1 floor floor floor floor 1 floor floor floor 19 floor floor 18 floor 17 floor 1 SCM 1 SPM T1 T T T1 T T OTDR measurement from shore current from shore floor 16 Container with optical power logging Sphere with tinytag for leakage detection Leakage detector floor 15 floor 1 LINE measurement items / electronic department floor 1 floor 1 floor 11 floor 1 floor 9 floor 8 floor 7 floor 6 floor 5 floor floor floor floor 1 SCM 1 SPM T1 T T T1 T T OTDR measurement from shore TLS: leakage WES: Weighted 8kg adventages; WTS: Weighted kg always a leakage measurement over a water block OMS: Optical module no RS problems by one flooded container 1 container with Genova PC no extra electrical test needed container with optical monitor full place resolution by copper wire break container with k8ohm resistor container all containers will have a leakage monitor current from shore POBox DB Amsterdam 8

9 E.Heine Page 9 of 11 Ref : -LCM-18-1A Date : /1/5 PBS 9..1 Indication number on bottom 1V V5 <mv brown V Optical power recording gnd Rx Tx Optical system RS only on OM-connector 9%=.dB PBS 9.. installed at integration Put tinytag indication number and cable TUBE in a database! 5. EMC between xlcm splice test run SCM. no stress systems lend by output (mv) stress added 5.. 1:1: 1:19:1 1:6: 1:: 6 1:: 8 break added 1:8: time (min. interval) 1:55:1 11:: 11:9: 6 LINE measurement items / electronic department Optical power recording for the LINE operation. A number of fibres in each tube ( tubes of 7 fibres) of the EMC are set in series. So of these systems are placed in an xlcm container. The RS connection of the is connected to an optical module connector to be able to communicate, after installation and closed containers, with the recorder. Optical part delive by BAAS / ingenieursbureau Coenecoop. mission time 6wks interval meass/h Vsupply 1V meas. no stressed fibre 19mV relative resolution.db / 9% voltage variation meas. break 6mV current during measurement 15mA av, ma pk charge during mission time (interval min) mah number of records (interval min) Initial measurement status: Laser output = uw Pin diode (PD) sensitivity = 1A/W = 1µA/µW measu over 7Ω, if µw reach the PD then µa and 7Ohm delive 188mV to the recorder. This is confirmed by the test sheets.. measurement in situ: Two EMC fibres are connected in each floor to the next piece of EMC; 6 floors 5 splices plus 1 to connect the optical module + in the optical module to go from plastic fibre to glass, gives 55 splices. A good splice gives.1-.db attenuation;. db worst case: 55*.=1.65dB. 1km fibre will gives.db. Estimated attenuation after integration will be < 1.85dB. 1^(-1.85/1) leaves 65.% input to the APD = 6µW. 6µW on the PD gives 6µA through 7Ω and gives 1mV to the recorder.. Resolution; The recorder input maximum is mv measu with 8 bits, so LSB=/56=.78mV..78mV correspond with 1.65µW input. POBox DB Amsterdam 9

10 E.Heine Page 1 of 11 Ref : -LCM-18-1A Date : /1/5 Indication number on bottom Indication number on bottom brown 1V V5 <mv V 1V V5 <mv brown V Optical power readout gnd Rx Tx Optical system gnd Rx Tx Optical system RS only on OM-connector DB9 5 COM Read out cable PC To test, To program To readout In situ In xlcm LINE measurement items / electronic department Install issues for the optical power detector The tinytag with optical box are placed in a xlcm-container. The RS wires are connected to an OM connector to program, test or readout the recorder. If there is water ingress the recorder and box will lost. To achieve a minimum of data loss in that case, the fibres in the tubes in the EMC are proposed to be connected by the showed scheme. xlcm xlcm Top xlcm Waterblock in EMC Tube 1 Tube Tube Waterblock in EMC xlcm Bottom xlcm EMC In the actual situation a pair of fibres in the same tube is used. Mnemonic db s versus logger output Vl; Power ratio: L=1log(P 1 /P ) db, P =P 1 /(1 L/1 )=P1.1 -L/1 Pindiode characteristic: 1 A/W Measu over: 7Ω Vl=7. P 1.1 -L/1, L=1log(Vl/(7*P 1 )) P 1 is ca. µw conform the testreports. Vl (mv) L P1=µW eff % % % % % % % % % % % % % % % % % % % POBox DB Amsterdam 1

11 E.Heine Page 11 of 11 Ref : -LCM-18-1A Date : /1/5 Actual wire scheme read out: RS RS Sensor RS Leakage LCM sensor Container -1, 1-15, 17-,,, 5 read out: *RS RS Sensor 1 RS RS reading optical power meter EMC Leakage sensor LCM Container 11,16, 1 RS Sensor RS Sensor read out: *RS RS Sensor 1 RS RS Leakage sensor LCM Container 1 read out: *RS 1 Electrical load RS RS Leakage sensor LCM Container 1m Base of line EMC RS Sensor Leakage sensor SCM Container LINE measurement items / electronic department Tynytag Number Connector Connector 1 Connector Module RS Tx ( ) -1, 1-15, 17-,,, 5 RS Rx ( ) RS GND ( ) 1 1 RS Tx ( 1) 5 1, 11, 16, 1, RS Rx ( 1) 6 RS GND ( 1) 1 Leakage sensor -1, 1-15, 17-,,, 5 Leakage sensor 5 Leakage sensor ground 8 Leakage sensor 1, Leakage sensor 5 Leakage sensor ground Cable connector orientation LCM connector orientation male face view female Reference: Line Zero minutes POBox DB Amsterdam 11