Gas Roots Flow Meter – Vetrix GR Series

Features

  • Accuracy: ±1.0%; ±1.5%
  • Power supply: 24V DC
  • Signal output: 4-20mA, Pulse, IC card and Modbus RS485
  • For continuously measuring and indicating the accurate measurement of gas in a pipeline.
  • Suitable for handling most types of clean, dry, common gases at either constant or varying flow rates.
  • Meters of standard construction are not directly suitable for handling acetylene, biogas or sewage gas.
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It is a positive displacement, rotary type gas meter designed for continuously measuring and indicating the accurate measurement of gas in a pipeline. Gas Roots flow meters are suitable for handling most types of clean, dry, common gases at either constant or varying flow rates. Meters of standard construction are not directly suitable for handling acetylene, biogas or sewage gas. Contact the factory for information on specially constructed meters made of materials directly compatible with these and other gases.

Applications

For some gas industry business accounting which used in some fields,like, restaurant, hotels, gas pressure regulation station, civil boiler, etc. Also available to measure some gases like, propane, nitrogen and others which have not corrosive mediums.

Specification

Connection DIN PN16
Accuracy ±1.5% of rate
±1.0% of rate
Condition Fluid Temperature: -10…+60℃
Ambient Temperature: -30…+60℃
Relative Humidity:5%-90 % RH
Atmospheric Pressure:86…106 Kpa
Power Supply Main Power:24V DC
Backup Battery:3.6V DC Lithium Battery
Power Consumption <1W
Output Pulse
4-20mA
IC card
Modbus RS485

Ordering Information

Model Suffix Code Description
GR- 1 2 3 4 5 6 Gas Roots Flowmeter
Diameter XXX 025:DN25
100:DN100
250:DN250
Flow Range Q-×× Refer to table
Converter Type N Basic Meter:Mechanical display without output
C Digital display;Temperature and pressure compensation;Pulse;4-20mA;
Optional：Modbus RS485;Control signal for IC card
D Digital Display;Automatic Temperature and pressure compensation
Standard out:4-20mA/Pulse/Control signal for IC card
Optional:Modbus RS485
Accuracy 10 ±1.0% of rate
15 ±1.5% of rate
Pressure Rating WP1 1.0Mpa
WP2 1.6Mpa
Connection DXX D16:DIN PN16 Flange;D25:DIN PN25 Flange;DN40:DIN PN40 Flange…
AXX A15:ANSI 150# Flange;A30:ANSI 300# Flange;A60:ANSI 600# Flange…
JXX J10:JIS 10K Flange;J20:JIS 20K Flange;J40:JIS 40K Flange…

Flow Range

Diameter Model Start Rate Max Flow Rate Pressure Loss Pressure Rate Accuracy Turndown Ratio Body Material
m³/h m³/h Pa Mpa
DN25 Q-16 0.6 16 120 1.0/1.6 1.5/1.0 20:1  

Aluminum Alloy
DN40 Q-20 0.6 20 130 1.0/1.6 1.5/1.0 20:1
Q-25 0.6 25 130 1.0/1.6 1.5/1.0 20:1
Q-30 0.6 30 130 1.0/1.6 1.5/1.0 20:1
Q-40 0.6 40 180 1.0/1.6 1.5/1.0 30:1
Q-60 0.6 60 180 1.0/1.6 1.5/1.0 60:1
DN50 Q-20 0.6 20 140 1.0/1.6 1.5/1.0 20:1
Q-25 0.6 25 140 1.0/1.6 1.5/1.0 20:1
Q-30 0.6 30 140 1.0/1.6 1.5/1.0 20:1
Q-40 0.6 40 200 1.0/1.6 1.5/1.0 30:1
Q-60 0.6 60 200 1.0/1.6 1.5/1.0 60:1
Q-85 0.6 85 210 1.0/1.6 1.5/1.0 70:1
DN65 Q-100 0.6 100 220 1.0/1.6 1.5/1.0 70:1
Q-140 0.6 140 220 1.0/1.6 1.5/1.0 120:1
DN80 Q-100 0.8 100 220 1.0/1.6 1.5/1.0 70:1
Q-140 0.8 140 240 1.0/1.6 1.5/1.0 100:1
Q-200 0.8 200 240 1.0/1.6 1.5/1.0 100:1
DN100 Q-300 0.8 300 280 1.0/1.6 1.5/1.0 110:1
Q-450 0.8 450 300 1.0/1.6 1.5/1.0 110:1
DN150 Q-650 10 650 580 1.0/1.6 1.5/1.0 80:1 Cast lron
Q-1000 10 1000 600 1.0/1.6 1.5/1.0 80:1
DN200 Q-1600 20 1600 850 1.0/1.6 1.5/1.0 60:1
DN250 Q-3000 30 3000 1050 1.0/1.6 1.0/1.6 40:1

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Vetrix GR Series – Gas Roots Flow Meter-DpstarGroup

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