Series DFMT Digital Paddlewheel Flowmeter

Transcription

1 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 as well as talizing flow moniring making it ideal for commercial industrial systems. The large backlit LCD display makes navigating through the menu structure simple. The Series DFMT uses high accuracy paddlewheel technology offers a user selectable 0 ma or pulse output has a corrosion resistant PVDF sensor giving it long life. rs can reset the talizer at any time set a security password protecting the setting from unauthorized changes. Installation Instructions The accuracy of these flowmeters can be affected by disturbances such as pumps elbows tees valves that are in the flow stream. To reduce the error caused by these disturbances pick a section of pipe that is at a distance from any pumps bends or valves. The recommended distance away from elbows pumps is shown in Figure. flange xi.d. x90 elbow xi.d. reducing 90 elbow xi.d. xi.d. 0xI.D. xi.d. x90 elbow division plane pump/valve xi.d. xi.d. 0xI.D. xi.d. 0xI.D. Figure : Mounting Straight Pipe Runs Required xi.d Mounting Location To reduce the possibility of causing damage the Series DFMT it is recommended that the meter be mounted in a full flow pipe. Vertical mounting is acceptable provided the liquid is flowing up through the meter or a sufficient back pressure exists on the downward flow. On horizontal mountings it is recommended that the meter be mounted perpendicular the pipe. For systems that may have small air pockets at the p of the pipe the meter can be mounted up off the vertical normal. -/8 [9] B SPECIFICATIONS Service: Compatible clean liquids. Range: See model chart. Wetted Materials: Sensor Impeller: PVDF; Shaft: Ceramic; O-Rings: Fluoroelasmer. Accuracy: ±.% FS. Repeatability: ±0.% FS. Output: Analog: 0 ma (0 Ω max. loop resistance); Pulse: NPN square wave output; Frequency: 0 khz (adjustable); Pulse width: ms (adjustable). Electrical Connections: Removable screw terminal. Temperature Limits: Process: - 9 F (-0 90 C); Ambient: - 9 F(-0 C). ure Limit: psi (.0 MPa). Power Requirements: VDC. Power Consumption: W. :.8 x. (0. x. mm) LCD. Totalizing Maximum: Process Connection: See model chart. Enclosure Rating: IP. Enclosure Material: ABS plastic. Weight: See model chart. Model DFMT-0A DFMT-A DFMT-0A DFMT-A DFMT-0A DFMT-0A Range GPM (m /h) 0..9 (0..8) (0. ).. (0. ).0.8 (0. ). 0. (. ) 8.8. ( 0) Connection /8 / / -/ Weight lb (kg).0 (0.8).0 (0.0). (0.). (0.). (0.).8 (0.) A B mm mm -/ 8 mm -/ 8 mm -/8 8 mm -/ 8 mm Connection /8 NPT / NPT / NPT NPT -/ NPT NPT -/ mm -/8 0 mm -/8 mm -/ mm -/8 mm -/8 mm DWYER INSTRUMENTS INC. Phone: 9/ P.O. BOX MICHIGAN CITY INDIANA 0 U.S.A. Fax: 9/ [email protected]

2 ELECTRICAL CONNECTIONS Item Label 0 ma+ 0 ma- 0 khz+ 0 khz- RS DATA+ RS DATA- V+ V- Vo+ SIN+ SIN- Function 0 Output Frequency/ RS8 Communication Input Power Terminals Power Sensor (Blue) Communication Sensor (Red) Communication Sensor (Black) Unit Adjustment The Series DFMT can display flow units of L/s L/min L/h m /s m /min m /h US gal/s US gal/min US gal/h. The talization units can be displayed in L m US gallons. To change flow units: From the menu select. Select. change the desired flow units. select units. L/h m /h 0 ma Output The Series DFMT can provide a variable current output that is proportional the detected flow rate. This output can be used in a range of external interface devices can be calibrated suit a particular flow range. The maximum load resistance is 0 Ω including the cables used connect. confirm the change or press To change talization units: From the menu select. L/h m /h Select. Pulse (Frequency) Output The Series DFMT offers a frequency pulsed output that can be configured as a linear flow proportional frequency output or a stard pulsed output via the unit software. The maximum pulse output frequency is khz with a pulse amplitude of V a maximum load current of 0.A. The pulse output frequency is adjustable from Hz (please refer To Change The Maximum Frequency under Setup ). When utilizing the unit with a linear proportional frequency output the liter/pulse option must be set 0.0 (please refer To Change the Pulse/Liters under the Setup ) the frequency output signal scaled the desired range within the units capability (please refer To Set Qmax under the Setup Menu scale frequency output signal). When utilizing the unit as a stard pulsed output (please refer Setup under the Setup Menu ). change the desired flow units. select units. confirm the change or press Resolution The Series DFMT has a selectable resolution of up decimal points for both the flow talization units. To change flow resolution: From the menu select. L m L m Select. RS8 Communication Output (Optional) The Series DFMT features optional RS8 Communication. This must be specified at time of order will not function otherwise. The RS data communication option will remain visible in the unit s software on the terminal board but will not be functional. Please contact facry for RS8 communication output capable units. change the desired flow select confirm the change or press USING THE SERIES DFMT When first turned on the Series DFMT will initialize then it will turn the measurement reading screen. To change talization resolution: From the menu select. Select. The p number is the instantaneous flow reading followed by the tal amount of liquid passed. The botm bar shows the percentage of flow in relation the maximum flow rate. To access the menu press the key on the keypad. Navigate through the menu using the select a sub menu the key enter a sub menu. To return the measurement reading screen or return from a sub menu press the key. change the desired talization select confirm the change or press

3 Damping Facr The Series DFMT has the capability introduce a damping facr allowing the user delay the response time of the display output. This function is used smooth out a reading of flows that has rapid spikes or dips in the flow rate. To adjust the damping facr: From the menu select. Select Damping. change the desired flow select confirm the change or press To change low cuff: From the menu select. enter password. Select. PV Decimal Damping(s) Select Low Cuff% input desired cuff %. Damping(s) 0.0 Max: 99.9 Min: Damping(s) confirm the change or press SYSTEM SETUP MENU Protection The Series DFMT has a system setup menu that is password protected. The password must be entered each time a user accesses the system setup menu. The unit is initially setup have a password of 000. ] *** New Qmax (m/h) Low Cuff% Low Cuff%.0 Max: 9.9 Min: select value. Low Cuff%.0.0 PULSE OUTPUT SETUP The Series DFMT has a cusmizable pulse output option. The user can configure this output s maximum frequency the number of liters per pulse the pulse width whether the pulse level is active low or active high. To change the maximum frequency: To change the password: From the menu select. enter password. Select New. create the desired password. select the password. confirm the change or press From the menu select. New New New 000 To set Qmax: enter password. Select. Select Qmax(m/h) create the desired Qmax. Select. input desired frequency upperlimit. select value Max: Min: confirm the change or press select the desired value. confirm the change or press *** New To change the liters/pulse: From the menu select. enter password. Select. input desired liters per pulse ratio. select value. *** New Qmax (m/h) Low Cuff% 000 PERCENTAGE RANGE The user can configure the percentage of flow display bar show a specified range within the products allowable range. The option Qmax(m/h) in the system setup menu allows the user set a flow rate at which the bar will show 00%. The option Low Cuff% allows the user set a flow rate at which the Series DFMT display zero set any outputs zero. From the menu select. enter password. *** Qmax (m/h) 00.0 Max: Min: Qmax (m/h) confirm the change or press *** New Max: Min:

4 To change baud rate: To change the pulse width: From the menu select. enter password. Select. input desired pulse width. confirm the change or press select value. From the menu select. Pulse Width (ms) Max: Min: Pulse Width (ms) To change pulse level: enter password. Select. select active high or active low. Select. select desired baud rate. *** New PULSE LEVEL The pulsed output on the Series DFMT can be programmed be active high or active low. From the menu select. enter password. Select RS8 Output. *** Active L confirm the change or press confirm the change or press RS8 COMMUNICATIONS OUTPUT (OPTIONAL) The Series DFMT also has a RS8 communications output capability. The user can alter the procol baud rate parity sp bit the device address. The RS8 output works on 8 data bits. To set procol: From the menu select. enter password. Select RS8 Output. Select RS8 Procol. select MODBUS. select value. confirm the change or press enter password. Select RS8 Output. Select. select parity type. *** RS8 Output RS8 Procol confirm the change or press RS8 Output RS8 Procol RS8 Procol MODBUS-RTU MODBUS-ASC RS8 Procol MODBUS-RTU MODBUS-ASC NONE EVEN select value. NONE EVEN To set sp bit: From the menu select. enter password. Select RS8 Output. Select Sp Bit. choose the sp bit. *** RS8 Output Sp Bit Sp Bit *** select value. From the menu select. select value. Active L Active H *** RS8 Output To set parity: Active H RS8 Procol New 900 select value. confirm the change or press Sp Bit

5 To set device address: To preset talizer: From the menu select. From the menu select. enter password. Select RS8 Output. *** RS8 Output enter password. Select. *** RS8 Output Select. Sp Bit Select. FWD Preset(m ) input desired device address. select value No. select Yes or select value. FWD Preset(m ) Max: Min: confirm the change or press confirm the change or press FWD Preset(m ) Clear set talizer The Series DFMT has a talizing function that is displayed on the main screen. This value can be cleared or set a predetermined value. To clear talizer: From the menu select. enter password. Select. Select. *** RS8 Output FWD Preset(m ) MAINTENANCE/REPAIR Upon final installation of the Series DFMT no routine maintenance is required. The Series DFMT is not field serviceable should be returned if repair is needed. Field repair should not be attempted may void warranty. WARRANTY/RETURN Refer Terms Conditions of Sale in our catalog on our website. Contact cusmer service receive a Return Goods Authorization number before shipping the product back for repair. Be sure include a brief description of the problem plus any additional application notes. No. select Yes or NO select value. Yes confirm the change or press NO Yes

6 Copyright 0 Dwyer Instruments Inc. Printed in U.S.A. / FR# R Rev. DWYER INSTRUMENTS INC. Phone: 9/ P.O. BOX MICHIGAN CITY INDIANA 0 U.S.A. Fax: 9/ [email protected]