FDM08 Venturi Inline Type Air Flow Transmitter

Model : FDM08

Features : Venturi inline type air flow measurement, wide range of applications
Sensor type : Differential pressure sensor
Air flow measuring range : 0 … 500 Nm³/h
Output signal : 4 … 20 mA
Accuracy : ±2%
IP rating : IP65 (Housing)

Features

● Precision measurement : Adopting the unique fluid dynamics principles of Venturi tube, the FDM08 provides accurate measurement.
● Wide range of applications : Suitable for general gases, steam, contaminated gases, or high-humidity gases.
● Stable performance : No moving or electronic parts inside the pipeline, ensuring excellent long-term stability.
● Easy installation : Shorter front and rear straight pipe sections compared to standard throttling devices, approximately 2.5D in the front and 2D in the rear.
● Low pressure loss : Designed to minimize pressure loss, reducing energy consumption.

Applications

Compressed air systems / Boiler systems / Industrial process gases / Water treatment aeration systems

Download Datasheet

Specification

Measurement
Sensor type	Differential pressure sensor
Air flow measuring range*	DN25 : 200 Nm³/h DN40 : 330 Nm³/h DN50 : 500 Nm³/h
*Pairs with DPM04 Flow Totalizer for instant conversion of differential pressure to air velocity and volume.
Accuracy
Accuracy	±2%
Temp. influence	±0.5%
Long-term stability	±0.2%F.S./year
Zero drift	±0.25%F.S.
Electrical
Output signal	4 … 20 mA
Power supply	DC 24V ± 10%
Electrical connection	M20x1.5
Environmental
Medium Temp.	-40°C … +120°C
Operating Temp.	-30°C … +70°C
Operating Humid.	0…95%RH (Non-condensing)
Operating pressure	16 bar
Storage Temp.	-30°C … +70°C
Installation
Pipe connection	G thread
Pipe size	DN 25/40/50
Protection
IP rating	IP65 (Housing)
Material
Pipe	Aluminum alloy
Sensor	Diaphragm : SS316L O-ring : Nitrile Butadiene Rubber (NBR) (Contact measuring medium) Filling oil : Silicon oil Flange and fittings : SS304 Housing : Die-cast aluminum epoxy coating
Weight	DN25 : 4.0 kg DN40 : 4.5 kg DN50 : 5.0 kg