Digital gas flow meters are available for flow range 0~20L/min with 6mm diameter and 0~250L/min with 12mm diameter. The gas mass flow meter is used for instant flow rate testing and flow accumulation calculation and suitable for different gas like compressed air, oxygen, nitrogen, CO2, Ar and other inactive gases, etc.

Specification

Model	CHN-MF5706	CHN-MF5708	CHN-MF5712
Flow Range	0~20L/min	0~100 L/min	0~250 L/min
Power Supply	4 AA batteries (LR6) or 5-24V DC
Power Adapter	Input: 100-240V AC, 50/60Hz, Output: 7V DC, 0.2A
Power Consumption	≤10mW
Signal Output *	RS 485 (Optional)
Display	LCD
Display Unit	Instantaneous flow rate: L/min, Flow accumulation: m3
Instantaneous Flow Resolution	0.01 L/min
Flow Accumulation Resolution	0.001 m3
Working Pressure	≤0.8MPa
Pressure Loss	≤600Pa	≤1000Pa	≤2000Pa
Working Temperature	-10℃ ~ +55℃
Keyboard	3 keys
User Interface	miniUSB port (This interface is connected to the power adapter for power supply, power cable is 0.5m, and it can also be used as a connection interface for 485 communication.)
Calibration	Air @20℃, 101.325kPa
DN	6mm	8mm	12mm
Mechanical Connection	NPT 1/4"	NPT 3/8"	NPT 1/2"
Weight	185g (Copper body)	270g (Aluminium alloy body)	350g (Aluminium alloy body)
Protection Class	IP40
Gas *	Air, N2, O2, Ar, CO2. For other gases, please contact us.
	Digital Gas Flow Meter User Manual

Dimension (Unit: mm)

Accessories (Optional)

Note: The optional miniUSB cable is used for the connection to external power supply and RS485 communication.

Tips: Digital Gas Flow Detector Installation

The gas flow meter is preferably installed horizontally. Flow direction should be the same as the direction of the arrow mark on the meter body. If there may be particles or debris in the fluid, a filter is strongly recommended to be installed upstream of the meter.

Please follow the below steps to complete the installation:

1. Check if the meter is complete, no visual damage first.

2. Before installation, make sure that there is no debris or particles in the pipe.

3. During installation, it is recommended to first install the inlet of the flow meter and then the outlet. To ensure the accuracy of measurement, the straight pipe length should be remained enough at the installation site of flow meter, upstream no less than 10 times DN and downstream no less than 5 times DN.

4. Make sure all the wire connections of the flow meter is correct including the wires for LCD, input/output and communication.

5. Turn on the power supply, and ensure that the LCD works properly.

6. Slowly turn on the valve of the pipeline, and then the flow meter starts to measure the gas flow in the pipeline.