Flowma TGF94/95 Remote Thermal Mass Flowmeter

TGF94/95 Hot wire thermal air velocity transmitter working at a constant Temperature.


TGF94/95 Hot wire thermal air velocity transmitter working at a constant Temperature.
using King’s law heat balance equation for:

Can be calculated from the formula characteristic curve of constant Temperature. 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.


  • IP67 Rugged aluminum alloy case, fit in variety harsh environment
  • Easy to install, high accuracy, long-term stability
  • Switchable physical quantities : m/s, ft/s, Nm3/h, Nm/s, L/min, m 3/min (Air velocity & volume)
  • LCD Display of air velocity and temperature
  • LCD Display of cumulative flow : m 3, L (Option)


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



Input typePt20 / Pt300 (Air velocity) / Pt1000 (Temp.)
Measuring range0 … 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)(Cumulative flow)(Option)
Minimum initial value0.15 Nm/s


Installation angle effect<3% of the measured value
(When the installation angle<10°)
Signal4 … 20 mA / 0 … 10 V / RS-485 / Impulse
Preset outputOut1 : Air velocity;Out2 : Impulse
Impulse range (1 … 500 Hz)(1)1 … 500 Hz : 4 … 20 mA
(2)1 … 500 Hz : 0 … 10 V
Signal connection3-wire
Warm-up time<60 sec
Reaction timet90<5 sec
Display typeLCD Module with back light, double-row
(Up air velocity, down temperature(Default: 0 … 120°C))
Load resistanceCurrent output : ≦500 Ω
Voltage output : ≧100 KΩ


Accuracy±1.5% F.S. (Option ±1%)
Temp. influence0.1% / °C


Power supplyDC 24 V±10%
Current consumption<0.3 A
Overvoltage protectionDC : <40 V
Electrical connectionsM12 connector / M16 metal cable gland


Measuring mediumAir
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 pressure16 bar


Fixed seat1/2′′PT movable thread
InstallationDuct type
Remote type


IP ratingIP67(Probe);IP65(Housing)
Electrical protection■ Reverse polarity
■ Over-voltage
■ Short-circuit


HousingAluminum alloy
WeightFTM94 : 720 g
FTM95 : 832

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