Flowma TGF94/95 Thermal Mass Flowmeter Hot wire thermal air velocity transmitter working at a constant Temp. using King’s law heat balance equation.
Flowma TGF94/95 Thermal Mass Flowmeter Hot wire 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.
| 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 angle＜10°) | 4 … 20 mA / 0 … 10 V / RS-485 / Impulse |
| Signal | |
| Preset output | Out1 : Air velocity；Out2 : Impulse |
| Impulse range (1 … 500 Hz) | (1)1 … 500 Hz : 4 … 20 mA |
| (2)1 … 500 Hz : 0 … 10 V | |
| Signal connection | 3-wire |
| Warm-up time | ＜60 sec |
| Reaction time | t90＜5 sec |
| Display type | LCD Module with back light, double-row(Up air velocity, down temperature(Default: 0 … 120°C)) |
| Load resistance | Current output : ≦500 Ω |
| Accuracy | Voltage output : ≧100 KΩ |
| Accuracy | ±1.5% F.S. (Option ±1%) |
| Temp. influence | 0.1% / °C |
| Repeatability | 0.5% |
| 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 | Air |
| 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 |
| Installation | Duct type |
| Remote type | |
| IP rating | IP67(Probe)；IP65(Housing) |
| Electrical protection | ■ Reverse polarity ■ Over-voltage ■ Short-circuit |
| Certification | CE |
| Housing Material | Aluminum alloy |
| Probe Material | SUS304 |
| Weight | FTM94 : 720 g |
| FTM95 : 832 g |
