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Air flow / Air velocity

Airflow and Air Velocity Meters

eyc-tech air flow transmitter, ranging from 0.1 m/s to 200 m/s, with corresponding products available for all your needs. Our industrial models are built to withstand high temperatures, dust, and mildly corrosive air, making them ideal for a wide range of applications including HVAC, air compression systems, and industrial settings.

FDM06-P Average Flow Thermal Mass Transmitter

Model : FDM06-P

Sensor type : Hot-wire sensor
Turndown ratio : 100 : 1
Output : 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
Accuracy : 0.5 ... 60 m/s：±(1.5% of mv + 0.8 m/s)
IP rating : IP65

FDM06-L Bi-directional Low Air Flow Thermal Mass Transmitter (Laminar flow / Overflow type)

Model : FDM06-L

Features : Ultra-low flow detection with reverse flow alert
Sensor type : Hot-wire sensor
Turndown ratio : 100 : 1
Measuring range : ±(0.00 ... 2 m/s)
Output : 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
Accuracy : 0.05 ... 2.00 m/s：±(1% of mv+0.1 m/s)
IP rating : IP65

FDM06-L Bi-directional Low Air Flow Thermal Mass Transmitter (Duct / Remote type)

Model : FDM06-L

Features : Bi-directional transmitter for tight-space insertion
Sensor type : Hot-wire sensor
Turndown ratio : 100 : 1
Measuring range : ±(0.00 ... 1 m/s), ±(0.00 ... 2 m/s), ±(0.00 ... 10 m/s), ±(0.00 ... 30.00 m/s)
Output : 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
Accuracy : 0.05 ... 1.00 m/s：±(1% of mv+0.05 m/s), 0.05 ... 2.00 m/s：±(1% of mv+0.1 m/s), 0.1 ... 10.00m/s：±(1% of mv+0.2 m/s), 0.5 ... 30.00m/s：±(1% of mv+0.5 m/s)
IP rating : IP65

AFMP Average Flow Measuring Tube (Pitot tube)

Model : AFMP

Features : Multi-point averaging. Suitable for large pipes. Resistant to high temperature and corrosion.
Operating pressure : Standard type : Max. 10 bar / High-temp. type : Max. 4 bar
Operating temperature : Standard type : Max. 200°C / High-temp. type : Max. 600°C
Length : 2" ... 40"(50 ... 1000 mm)

FDM06-I Venturi Thermal Mass Flow Meter

Model : FDM06-I

Features : Utilizes a unique Venturi tube structure, the Inline type air flow sensor designed for compressed air system
Sensor type : Hot-wire sensor
Turndown ratio : 100 : 1
Measuring range : 0 ... 4000 m³/h
Output : 4 ... 20 mA / 0 ... 10 V / Relay / RS-485
Accuracy : ±1.5% F.S.
IP rating : IP65

FDM06S Differential Pressure Type Air Flow Transmitter

Model : FDM06S

Features : Adopting the differential pressure principle for air flow measurement enables bi-directional airflow measurement and Calculates medium density and mass flow rate.
Sensor type : Differential pressure sensor
Measuring range : Standard version : ± (0.8, ..., 40 m/s) / High-pressure version : ± (20, ..., 200 m/s)
Output : 4 ... 20 mA + RS-485 / 0 ... 10 V + RS-485 / Frequency (0 ... 100 Hz) + RS-485 / Pulse (Option) + RS-485
Accuracy : ±1.5% F.S. (Option±1% F.S.)
IP rating : IP65 (Bod...

FDM08 Venturi Inline Type Air Flow Transmitter

Model : FDM08

Features : Venturi inline type air flow measurement, a wide range of applications
Sensor type : Differential pressure sensor
Air flow measuring range : Reference airflow range table based on environmental conditions
Output signal: 4 ... 20 mA
Accuracy : ±2%
IP rating : IP65 (Housing)

FTM06D-I Inline Type Air Flow Transmitter

Model : FTM06D-I

Sensor type : Thermal mass flow sensor
Measuring range : 0.1 ... 848 m³/h
Output : 4 ... 20 mA / 0 ... 10 V / RS-485 / Frequency / Pulse
Accuracy : ±1.5% F.S.
IP rating : IP65 (IP67 option)

FTE120-I Inline Type Air Flow Transmitter

Model : FTE120-I

Features : Inline type air flow sensor designed for pneumatic system and compressed air system. Multiple diameter. Sonic nozzles calibration.
Sensor type : Thermal mass flow sensor
Measuring range : 0 ... 1500 l/min
Output : 4 ... 20 mA / 0 ... 10 V / RS-485 / Frequency / Pulse
Accuracy : ±2% F.S.
IP rating : IP 65 (Housing) / IP20 (Probe)

FTM94/95 Industrial High Accuracy Thermal Mass Flow Transmitter

Model : FTM94FTM95

Features : Designed for industrial application. Air flow measurement up to 120 m/s. Resistant to high temperature, high pressure, dust, and corrosion.
Sensor type : Pt20 / Pt300(Air velocity) / Pt1000(Temp.)
Measuring range : 0 ... 120 Nm/s
Output : 4 ... 20 mA / 0 ... 10 V / RS-485 / Impulse
Accuracy : ±1.5% F.S.
IP rating : IP67(Probe) / IP65(Housing)

FTM84/85 Industrial High Accuracy Thermal Air Velocity Transmitter

Model : FTM84FTM85

Features : Suitable for clean air; Resistant to high pressure and high temperature.
Sensor type : Thermal mass flow sensor
Measuring range : 0 ... 90 m/s
Output : 4 ... 20 mA / 0 ... 10 V / RS-485
Accuracy : ±1.5% F.S.
IP rating : IP67

FTM06D Thermal Mass Flow Transmitter

Model : FTM06D

Features : Suitable for compressed dry air system.
Sensor type: Thermal mass flow sensor meter
Measuring range: 0 ... 120 m/s
Output: 4 ... 20 mA / 0 ... 10 V / RS-485 / Frequency / Pulse
Accuracy: ±1.5% F.S.
IP rating: IP65

FTE120 OEM Air Flow Transmitter

Model : FTE120

Features : Suitable for small-sized devices or equipment. Compact size. Various installation methods.
Sensor type : Thermal mass flow sensor
Measuring range : 0 ... 30 m/s
Output : 4 ... 20 mA / 0 ... 10 V / RS-485
Accuracy : ±2% F.S.
IP rating : IP65
OEM Product : 50 PCS

AFMT Average Flow Measuring Tube (Pitot static tube)

Model : AFMT

Features : Multi-point averaging. Suitable for large pipes. Resistant to high temperature and corrosion.
Operating pressure : Max.10 bar
Operating temperature : Max. 250°C
Length : 4" ... 40"(100 ... 1,000 mm)

FTS140 Hot Wire Air Velocity Transmitter

Model : FTS140

Features : Economic model for HVAC application.
Sensor type : Hot wire mass flow transmitter
Measuring range : 0 ... 20 m/s
Output : 4 ... 20 mA / DC 0 ... 10 V
Accuracy : ±3% F.S.
IP rating : IP54