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Thermal Gas Mass Flow Meter

Thermal mass flow meters are instruments that measure flow rate using the principle of heat conduction. This instrument uses the constant temperature difference method to accurately measure gas mass flow rate. It has advantages such as small size, high degree of digitalization, easy installation, and accurate measurement.
The sensor consists of two reference-grade platinum resistance temperature sensors. Using a bridge circuit, one sensor measures the fluid temperature, and the other maintains a constant temperature difference above the fluid temperature, allowing for flow measurement under high temperature and high pressure conditions.
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Product Advantages

Product Introduction

Technological advantages

  • It is a true mass flowmeter, requiring no temperature or pressure compensation for gas flow measurement, providing convenient and accurate measurement. It can measure either mass flow or standard volume flow.
  • It has a wide turndown ratio, capable of measuring gas velocities as high as 120 Nm/s and as low as 0.5 Nm/s, and can be used for gas leak detection.
  • It offers excellent vibration resistance and a long service life. The sensor has no moving parts or pressure sensing components, making measurement accuracy unaffected by vibration.
  • It is easy to install and maintain. If site conditions permit, installation and maintenance can be performed without interrupting production. (See Safety Precautions.)
  • Digital design. Fully digital circuit measurement ensures accurate measurement and easy maintenance.
  • Using RS-485 or HART communication, it enables factory automation and integration.

Technological advantages

▲A true mass flow meter, it requires no temperature or pressure compensation for gas flow measurement, making measurement convenient and accurate. It can provide the mass flow rate or standard volumetric flow rate of the gas.
▲Wide turndown ratio, capable of measuring gas flow rates from as high as 120 Nm/s down to 0.5 Nm/s, and can be used for gas leak detection.
▲Excellent vibration resistance and long service life. The sensor has no moving parts or pressure sensing components, and is unaffected by vibration on measurement accuracy.
▲Easy installation and maintenance. Under suitable site conditions, installation and maintenance can be performed without interrupting production. (Please refer to safety precautions)
▲Digital design. The overall digital circuit design ensures accurate measurement and convenient maintenance.
▲Utilizing RS-485 or HART communication, it enables factory automation and integration.

Ordinary clamping size

Flange connection size table

DaliberLHD
1520032095
20200320105
25200330115
32200340140
40200350150
50200360165
65200370185
80200380200
100200400220
125250570250
150300590285
200300630340
250300690405
300300730460

Flow Rate Comparison Table for Each Caliber

Pipe inner diameter (mm) Minimum flow rate (Nm/S) Maximum flow rate (Nm³/s) Minimum flow rate （Nm³ / h） Maximum flow rate （Nm³ / h） Normal flow rate range

（Nm³ / h）
15 0.1 100 0.063617251 63.61725116 0.3-40
20 0.1 100 0.113097335 113.0973354 0.5-75
25 0.1 100 0.176714587 176.7145866 0.85-100
32 0.1 100 0.289529179 289.5291786 1.5-200
40 0.1 100 0.452389342 452.3893416 2.5-340
50 0.1 100 0.706858346 706.8583463 4-500
65 0.1 100 1.194590605 1194.590605 6-700
80 0.1 100 1.809557366 1809.557366 9-1300
100 0.1 100 2.827433385 2827.433385 13-2000
125 0.1 100 4.417864664 4417.864664 24-3000
150 0.1 100 6.361725116 6361.725116 30-4000
200 0.1 100 11.30973354 11309.73354 55-7700
250 0.1 100 17.67145866 17671.45866 85-11000
300 0.1 100 25.446 25446.900 125-16000
350 0.1 100 34.636 34636.058 170-1700
400 0.1 100 45.238 45238.934 240-24000
450 0.1 100 57.255 57255.526 300-30000
500 0.1 100 70.685 70685.834 350-35000
600 0.1 100 101.787 101787.601 500-50000
700 0.1 100 138.544 138544.235 700-70000
800 0.1 100 180.955 180955.736 900-90000
900 0.1 100 229.022 229022.104 1200-120000
1000 0.1 100 282.743 282743.338 1500-150000
1500 0.1 100 636.172 636172.511 3300-330000
2000 0.1 100 1130.973 1130973.354 5500-550000

FAQ

We provide you with the advantages of a reliable manufacturer.

Are you the source factory?

Yes. We are a professional manufacturer of flow meters and Industrial instrument, production, sales, and service. With excellent processing equipment and advanced technology, we have received multiple honors and customer praise.

We have products like oval gear flow meter, turbine flow meter, electromagnetic flow meter, vortex flow meter, mass flow meter, ultrasonic flow meter, radar level meter, precession vortex flow meter, etc.

Standard one year warranty, and lifetime technical support is provided for all our client.  

All the flow meter and sensor have passed the national quality inspection and obtained ISO certification for quality management system certification, CE certificate, high-tech enterprise certificate, calibration certificate and all the products will be verified as qualified before shipment.

Standard: 1-2 working days shipment
Custom models or in bulk: negotiate the specific time

Sure thing, we’ll provide English manual and tutorials for you. For all our client, And our technical engineers are always at your service！