FTS140 Hot Wire Air Velocity Transmitter

Using Mass flow principle A better choice for HVAC engineering

● Hot wire mass flow transmitter
● IP rating：IP54
● Linear adjustment function
● Switching analog output by dip switch
● The housing and probe material are PC fire-proof

FTS140 hot wire air velocity transmitter, using mass flow measuring principle, stable electrical bridge with good accuracy, simple structure, stable performance and low flow sensitivity.
It is suitable for use in HVAC air conditioning environment measurement, optimization and adjustment of system performance, ventilation control.
Duct type, easy installation, suitable is used extensively in environmental engineering projects, as facility and factory maintenance.

Monitoring air and flow for industrial process / HVAC / Building / Factory

Input
Sensor：Hot wire mass flow transmitter
Measuring range：0 ... 20 m/s
Minimum measuring range：0.2 m/s
Installation angle effect：＜3% of the measured value(When the installation angle＜10°)

Output
Signal：4 ... 20 mA / DC 0 ... 10 V
Signal connection：3-wire
Load resistance：Current output：≦500 Ω / Voltage output：≧10 KΩ
Reaction time：t90≦5 sec(τ：90%)

Accuracy
Accuracy：±3%F.S.
Temp. influence：0.3% / °C

Environmental
Medium & Temp.：Air；0 ... 50°C
Body operating Temp.：0 ... 50°C
Body operating Humid.：95%RH(Non-condensing)
Storage Temp.：-20 ... +60°C

Electrical
Power supply：DC 24 V & AC 12 ... 30 V
Current consumption：DC 24 V：120 mA / AC 12 V：350 mA / AV 24 V：180 mA
Overvoltage protection：DC：＜40 V / AC：＜40 V
Electrical connections：Terminal

Installation & Protection
Installation：Duct type / Flange type
IP rating：IP54
Electrical protection：■ Polarity protection ■ Over-voltage ■ Short-circuit

Certification
Certification：CE

Material
Housing / Probe：PC fire-proof(UL94V-2) / PC fire-proof
Probe head / Wire：PC
Weight：~150 g