VPInstruments VPFlowScope In-line 3/8" User Manual Download Page 20

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easy insight into energy flows

MAN-VP-VP38-EN-2100
Date: 25-01-2021

Buitenwatersloot 335

2614 GS Delft

The Netherlands

www.vpinstruments.com

VPInstruments

Summary of Contents for VPFlowScope In-line 3/8"

Page 1: ...VPFlowScope In line 3 8 VPINSTRUMENTS COM User manual 2021 VPInstruments MAN VP VP38 EN 2100 Date 25 01 2021...

Page 2: ...ile every precaution has been taken in the preparation of this document the publisher and the author assume no responsibility for errors or omissions or for damages resulting from the use of informati...

Page 3: ...6 5 Measurement 7 7 1 Flow 7 2 Totalizer 6 Mechanical installation 8 8 1 Installation point 8 2 Piping table 7 Connectivity communication 10 10 1 LEDS 10 2 4 20 mA output 11 3 Pulse 12 4 RS485 12 5 Di...

Page 4: ...cleaning alcohol Not intended for fiscal metering or billing Our flow meters are not certified for fiscal metering Laws on fiscal metering and billing may vary per country or state Do not overestimat...

Page 5: ...e with 3rd party monitoring systems We have done our best to make this user manual as complete as possible New users please read it carefully to familiarize yourself with our products Experienced user...

Page 6: ...nditions are within the specifications of the flow meter and the upstream and downstream straight pipe lengths are respected For installation of the flow meter the pipe needs to be cut Mount the flow...

Page 7: ...rate and can be described by the following formula Vout k v Ts Tg Vout output voltage k sensor geometrical constant thermal conductivity of the gas density of the gas v actual velocity in m sec Ts se...

Page 8: ...ve atmosphere where possible Electrical problems high voltage high power Mechanical vibration and danger walking bridges fork lift trucks Any environmental source of potential error Stop These devices...

Page 9: ...r another location This table is a practical guideline and is not exact science Practical situations can have multiple sources of distortion therefore VPInstruments does not take any responsibility fo...

Page 10: ...nds interval Initializing during start up Green On Device is on and started up Orange Blinking fast Modbus communication 7 2 4 20 mA output The 4 20 mA output can be used to connect to VPVision a cent...

Page 11: ...In line 3 8 flow meter features a low frequency active pulse output The pulse is a non potential free output as it acts like a controlled current output To make it passive an external isolator can be...

Page 12: ...elow options are available Baud rate 9600 19200 38400 57600 115200 Stop bits 1 2 Parity None Even Odd Factory default is 38400 1 none The communication protocol is Modbus RTU More information can be f...

Page 13: ...n code 0x10 for writing multiple registers Holding register Data format is little endian word order big endian byte order within the word CDAB Register map The actual measurement data is placed in hol...

Page 14: ...ead 00EA 00EB 234 235 Temp Kelvin 32 bit integer Read Totalizer 00FA 00FB 250 251 Totalizer m 3 n Floating point Read 00FC 00FD 252 253 Totalizer positive m 3 n Floating point Read 00FE 00FF 254 255 T...

Page 15: ...bit integer Read write 0423 0423 1059 1059 Analog output mode 16 bit integer Read write 044C 044D 1100 1101 Diameter mm Floating point Read write 04B0 04B0 1200 1200 Modbus address 16 bit integer Read...

Page 16: ...oltage drops will occur in long cables resulting in insufficient power The display will notify you when there is insufficient power 9 1 4 20 mA An advantage of a current loop is that the accuracy of t...

Page 17: ...2 RS485 Installing a RS485 network require specific knowledge Not following the specifications strictly might result in in correct communications and equipment damage Please leave installation up to...

Page 18: ...s Junction boxes make sure that the 120 Ohm resistor is only enabled in the last Modbus Junction box in the daisy chain Biasing When there is no data activity on an RS485 network the communications li...

Page 19: ...perature range 20 32 C 68 89 6 F Display Display type 1 8 TFT with auto power save LED status LED indicators on all models for power and communication Outputs RS485 Modbus RTU Analogue output 4 20 mA...

Page 20: ...easy insight into energy flows MAN VP VP38 EN 2100 Date 25 01 2021 Buitenwatersloot 335 2614 GS Delft The Netherlands info vpinstruments com www vpinstruments com VPInstruments...