Thread Thermal Mass Flow Meter | RWMF Thread

Thread Thermal Mass Flow Meter | RWMF Thread

Thread Thermal Mass Flow Meter – Overview

The Thread Thermal Mass Flow Meter is popular in industrial applications due to its design. It features no moving parts, a nearly unobstructed straight-through flow path, requires no temperature or pressure corrections and retains accuracy over a wide range of flow rates. Straight pipe runs can be reduced by using dual-plate flow conditioning elements. Simple installation with minimal pipe intrusions. It is mainly used to measure dry gas, such as Air, Natural gas, LPG gas, Biogas, etc. Not suitable for Vapour, Humid gas and Ethyne.

Thread Thermal Mass Flow Meter  – Features

  • Wide range ratio 1000:1
  • Large diameter, low flow rate
  • Direct mass flow measurement without temperature & pressure compensation
  • Sensitive low flow rate measurement
  • Easy to install and use
  • Suitable for single or mixed gas flow measurement
  • Could measure gas with flow velocity from 100Nm/s to 0.1Nm/s, which can be used for gas leak detection
  • The sensor has no moving parts or pressure-sensing parts
  • Not affected by vibration on the measurement accuracy
  • Good seismic performance and high measurement reliability
  • No pressure loss or negligible pressure loss
  • Supports multiple communication methods: RS485, MODBUS protocol, etc.

Description

Thread Thermal Mass Flow Meter | RWMF Thread

Table 1: Thread Thermal Gas Mass Flow Meter Parameter
Measuring Medium
Various gases (Except acetylene)
Pipe Size
DN10mm-DN100mm
Velocity 0.1-100Nm/s
Accuracy ±1%
Working Temperature
Sensor:-40~+220 degC Transmitter:-20~+45 degC
Working Pressure
Insertion Sensor: medium pressure ≤1.6Mpa
Flanged Sensor: medium pressure ≤4.0Mpa
Special pressure please double check
Power Supply
Compact type: 24VDC or 220VAC, Power consumption ≤18W
Remote type:220VAC,Power consumption ≤19W
Response Time 1s
Output
4-20mA(optoelectronic isolation,maximum load 500Ω),Pulse RS485(optoelectronic isolation) and HART
Alarm Output
1-2 line Relay, Normally Open state, 10A/220V/AC or 5A/30V/DC
Sensor Type
Standard Insertion, Hot-tapped Insertion and Flanged
Construction
Compact and Remote
Pipe Material
Carbon Steel, Stainless Steel, Plastic etc.
Display
4 lines LCD Mass flow, Volume flow in standard condition, Flow totalizer, Date and Time, Working time, and Velocity, etc.
Protection IP65

 

Table 2: Common Use Gas Maximum Range
Caliber
( mm )
Air Nitrogen ( N2 ) Oxygen ( O2 )
Hydrogen ( H2 )
15 65 65 32 10
25 175 175 89 28
32 290 290 144 45
40 450 450 226 70
50 700 700 352 110
65 1200 1200 600 185
80 1800 1800 900 280
100 2800 2800 1420 470

 

Table 3: Thermal Gas Mass Flow Meter Model Selection
Model RWMF X X X X X X X
Caliber
DN10-DN4000 (3/8″-158″)
Structure
Compact C
Remote R
Explosion Proof
Ex d IIC T6 Gb EX
Without W
Material
SS304 304
SS316 316
others O
Connection
Flange
(DN10~DN300mm)
PN10/PN16/PN25/PN40(DIN) D**
A15:150#, A30:300# (ANSI) A**
10K/20K/30K/40K (JIS) J**
Tri-clamp (DN10~DN100mm) C
Thread (DN10~DN100mm) T
Insertion (DN32~DN4000mm) I
Power Supply
AC85~250V AC
DC24~36V DC
Signal Output
4-20mA+Pulse+RS485 RS
4-20mA+Pulse+HART HT

Thread Thermal Mass Flow Meter | RWMF Thread

Brand

Royce Water Systems

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