compressed air flow meter insertion type air flow meters

TGF460 compressed air flow meter

-Protable insertion type air flow meters

The high-contrast graphical display of thermal mass flow measurement sensors simultaneously displays flow rate, temperature, total flow, a bar graph, and diagnostic data. Our new digitally-driven circuit replaces our competitors’ standard drift-prone analogue Wheatstone bridge.
This improvement in circuit design enhances stability by removing long-term drift and ensuring a repeatable zero flow data point.
The user can undertake a simple single-point in-situ calibration verification technique using the repeatable zero flow data flow point, which ensures that the thermal mass flow meter installation continues to operate within the accuracy standards of the original NIST traceable calibration

Advantages at a glance:

  • Minimum flow rate down to 0.3m/s, 1:100 super-wide turndown ratio
  • Compressed air, Nitrogen, non-corresive flow measurement
  • pulse and RS485 as a standard, Hart@4~20mA for option
  • Hot tapping install, support isntall under pressure
  • Bluetooth app offer very easy friendly operating interface
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TGF460 Thermal mass flow meter

Ideal for compressed air system

  • Specially designed for air and nitrogen standard flow measurement
  • Anti-ejection, can be installed/removed under pressure
  • Minimum flow rate down to 0.3m/s, 1:100 super wide turndown ratio
  • No moving part, almost no pressure loss
  • Direct mass flow measurement, free of temperature or pressure compensation
  • Optimized power efficiency design, supper low power consumption down to 60mA@24VDC
  • Standard output is pulse and RS485, Hart@4~20mA and 4~20mA is available
  • Self-diagnose function with connected user’s phone via Bluetooth

Insertion type thermal mass flow meter install method

insertion type thermal mass flow meter installation

Specification of TGF460 Compressed air flow meter

Media Compatibility Air, Nitrogen
Pipe diameter Insertion:DN25~900mm
Inline: DN25~300mm
Flow velocity range 0.3~30Nm/s
Accuracy 1.5% RD ±0.5% FS
Temperature of medium -40~+150°C
Pressure of medium Insertion: 1.6 MPa
Flanged insertion: 6.3 Mpa
Flanged in-line: 6.3 Mpa
Power supply AC85~264V or DC16~32V
Response time 1 second
Output Frequency and 4~20mA as standard
RS~485+Bluetooth as standard ,
Communication 4~20mA@HART as optional
Date displayed Mass flow, Total flow
Volume flow in normal condition,
Ingress protection grade IP65 (GB China)
1 General model TGF460 Standard
2 Measurement velocity 1 0.3 ~ 30Nm/s Option
2 0.6 ~ 60Nm/s Standard
3 0.9 ~ 90Nm/s Option
4 1.2 ~ 120Nm/s Option
5 1.5 ~ 150Nm/s Option
6 1.8 ~ 180Nm/s Option
3 Process connection I1 Insertion type with 255mm probe Option
I2 Insertion type with 320mm probe Standard
I3 Insertion type with 395mm probe Option
F1 Flanged insertion type up to 25 barG (362 psiG) Option
D1 Flanged DIN PN16 up to 16 barG (232 psiG) (DN15~DN300) Option
D2 Flanged DIN PN25 up to 25 barG (362 psiG) (DN15~DN300) Option
D3 Flanged DIN PN40 up to 40 barG (580 psiG) (DN15~DN300) Option
C1 Flanged ANSI CL150 up to 16 barG (232 psiG) (0.5 inch~12 inch) Option
C2 Flanged ANSI CL300 up to 40 barG (580 psiG) (0.5 inch~12 inch) Option
J1 JIS 10K up to 16 barG (232 psiG) (DN15~DN300) Option
J2 JIS 20K up to 40 barG (580 psiG) (DN15~DN300) Option
4 Wet part material 1 316ss sensor with 304ss wet parts Standard
2 316ss sensor with 316ss wet parts Option
5 Transmitter T Integral Standard
R Remote Option
6 Cable grinder M M20x1.5 Standard
N NPT 1/2 Option
7 Transmitte 1 pulse/frequency + 4~20mA + RS485 + Bluetooth Option
2 pulse/frequency + 4~20mA@HART + Bluetooth Standard
8 Power supply 1 13.5~42VDC Standard
2 13.5~42VDC with 85~265VAC 50/60Hz power converter Option
9 Pipe size xxxx please use 4 digit pipe size, such as DN50=0050, DN300=0300 xxxx


The thermal mass meter uses the principle of convective heat transfer to measure gas flow. The gas passes over the heated flow sensor, and the gas molecules transport heat away, causing the sensor to cool and energy to be lost. The probe of the meter is inserted into the gas stream of a pipe, stack, or duct in either situation.

Thermal mass flow measurements are typically used to determine the rate of gas flow. The flow of material is directed past a heated element as the principle of action.

In contrast to most other systems that detect volumetric flow and require separate measurements for temperature and pressure in order to determine density and, eventually, mass flow, the thermal Mass Flow Meter installation or thermal mass flow controllers can provide a direct measurement of mass flow.

There are two types of thermal flow meters: rate of heat loss flowmeters and temperature rise flowmeters.

The sensor is placed in one of many test sections adopting the best thermal mass flow meter technology, a known volume of gas has flowed through the pipe, and the signal is measured to obtain the desired overheat. This is repeated at least 12 times during the working range.