FTM 94/95 Industrial Type High Precision Thermal Mass Air Flow Meter

Thermal Mass Air Flow Meter Protection class IP67 has a robust stainless steel case and is suitable for various demanding processes. It is highly sensıtıve but its easy to install. It has a built-in sensing element and long-term stability.
It is possible to choose between multifunctional physical quantities (Air speed and volume): [m / s], [ft / s] [ Nm 3 / h] [Nm / s] [L / min] [m3 / min]
In the thermal air flow meter, air speed and temperature can be monitored simultaneously on the LCD Screen.
FTM 94 / 95 is a thermal air velocity transmitter operating at a constant temperature. Using King's law heat balance equation;

e2 = a '+ b'v n

e : Sensor voltage output (V)
a'：Zero output of Thermal anemometer at constant temperature, can use CTA circuit as temperature compensation
b': Sensitivity of the sensor regarding operating temperature
v：Liquid flow rate
n: 0.45 ... 0.5 (Standard)

can be calculated from the formula characteristic curve of constant temperature. Thermal anemometer has a special double PT probe and full metal body design. With high accuracy, it is suitable for various pipe diameters and is widely used in industrial areas.

Technical Properties

• Brand : eYc-Tech / Taiwan
• Product Type: FTM94/95
• Input type：Pt20/Pt300 (Air speed), Pt1000 (Temperature)
• Measuring range ： 0 ... 120 Nm/h ， N ： Operating condition (Definition ： 20°C at 1013 hPa) ； Units can be converted to Nm/h (Flow) or Nm 3/h (Flow) (Option)
• Mounting angle effect：3% of measured value (When the mounting angle is＜10°)
• Output signal： 4 ... 20 mA / 0 ... 10 V / RS-485 / Impulse
• Preset output ： Out1 ： Air speed ； Out2 ： Impulse
• Signal connection：3-wire
• Linear accuracy：±1.5%
• Warm-up time ： ＜ 60 sec
• Reaction time：t90＜5sec
• Load resistance ： Current output ： ≦ 500 Ω ； Voltage output ： ≧ 10 KΩ
• Probe pressure：16 bar
• Power supply：DC 24V ±10%
• Electrical connections： M12 metal connector / terminal IP67
• Fixed slot：1/2"PT external thread metal connector
• Installation：Channel type/remote type
• IP rating：IP67 (Probe)；IP65 (Enclosure)
• Certification：CE
• Material ： Housing ： Aluminum alloy ； Probe ： SUS304
• TAF accreditation：3032 complies with ISO/IEC 17025) TAF has a mutual recognition arrangement with ILAC MRA