Flowma TGF94/95 Thermal Mass Flowmeter

Flowma TGF94 & TGF95 Thermal Mass Flowmeter

Flowma TGF94/95 Hotwire thermal air velocity transmitter working at a constant Temp. using King’s law heat balance equation for:

Can be calculated from the formula characteristic curve of constant Temp. hot wire anemometer, special three PT probe and full metal housing design, high accuracy, suitable for a variety of pipe diameters, widely used in industrial fields.

Feature :

  • IP67 Rugged stainless steel case, fit in various harsh environments 
  • Easy to install, imported sensing element, high accuracy, long-term stability
  • Switch multifunction physical quantities(Air velocity and volume):[m/s]、[f /s]、[Nm3/h]、[Nm/s]、[L/min]、[m3/min]
  • LCD Display of air velocity and temperature
  • LCD Display of cumulative flow: m3, L (Option)

Application :

  • Exhaust gas removal
  • Dust environment
  • Slightly corrosive environment
  • Burner feeder
  • Biotechnology industry
  • Factory building air intake
  • Exhaust calculation

Specification :

Input type

Pt20 / Pt300 (Air velocity) / Pt1000 (Temp.)

Measuring range

0 … 120 Nm/s

N: Working condition (Definition: 20°C at 1013 hPa)
 Units can be converted Nm/s (Flow rate) or Nm3/h (Flow)
(Option) or m3 (Cumulative flow) (Option)

Minimum initial value

0.15 Nm/s

Installation angle effect

3% of the measured value

(When the installation  angle10°)

4 … 20 mA / 0 … 10 V / RS-485 / Impulse


Preset output

Out1 : Air velocityOut2 : Impulse

Impulse range (1 … 500 Hz)

(1)1 … 500 Hz : 4 … 20 mA

(2)1 … 500 Hz : 0 … 10 V

Signal connection


Warm-up time

60 sec

Reaction time

t905 sec

Display type

LCD Module with backlight, double-row
(Up air velocity, down the temperature (Default: 0 … 120°C))

Load resistance

Current output: 500 Ω


Voltage output : 100 KΩ


±1.5% F.S. (Option ±1%)

Temp. influence

0.1% / °C



Power supply

DC 24 V±10%

Current consumption

0.3 A

Overvoltage protection

DC : 40 V

Electrical connections

M12 connector / M16 metal cable gland

Measuring medium


Operating Temp.

-20 … +60°C

Operating Humid.

0 … 95%RH(Non-condensing)

Probe Operating Temp.

0 … 120°C / Option:200°C

(Increasing operating temperature will affect air velocity error)

Storage Temp.

-20 … +60°C

Storage Humid.

0 … 95%RH(Non-condensing)

Probe pressure

16 bar

Fixed seat

1/2″PT movable thread


Duct type

Remote type

IP rating


Electrical protection

Reverse polarity Over-voltage Short-circuit



Housing Material

Aluminum alloy

Probe Material



FTM94: 720 g

FTM95: 832 g

Source: inaparts.com

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