Small Gas Mass Flow Meter, Air/O2/N2, 0-2/5/50L/min

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$445.58

Small gas mass flow meter is characterized with compact size, high accuracy and good repeatability, designed for low gas flow rate (0-2/ 5/ 50L/min) in the gas lines of 3mm and 8mm in diameter, easy for installation with BST1/4 (R1/4) connection, LED display instantaneous flow rate and flow accumulation, suitable for wide applications involving compressor air, O2, N2, etc.

Flow Range *
Gas *
Other Gases (in respective volumetric %) *

SKU: ATO-FLOW-MF4000

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Overview
Documents

Compact andlight gas mass flow meters are designed for low gas flow rate measurement in the gas pipelines of 3mm and 8mm in diameter, and have flow rate range of 0~2, 5 L/min and 0~20, 50 L/min available with BST1/4 (R1/4) connection. Featuring high sensitivity and fast response time, the gas flow meters are suitable for process gas control, environmental sampling and many other industrial applications.

Specification

Model	ATO-MF4003	ATO-MF4008
Flow Range *	0~2, 5 L/min	0~20, 50 L/min
DN	3mm	8mm
Gas *	Air, N2O, CO2, O2, N2, Ar. For other gases, please contact us.
Turn-down Ratio	100:1
Accuracy	±(1.5+0.2)% FS
Repeatibility	0.25%
Zero Drift	±30mV
Output Drift	±0.12%/°C
Response Time	10ms (default, 20, 50, 100, 200, 500, 1000 settable)
Power Supply	8-24V DC, 50mA
Signal Output *	Linear: Analog 1-5V DC (Standard); RS232, RS485 (Optional)
Display	4-digit 7-segment LED, 2 LED indicator
Display Unit	Instantaneous flow rate: SLPM, Flow accumulation: SL
Display Resolution	0.001, 0.01, 0.1 L/min settable	0.01, 0.1 L/min settable
Working Pressure	≤0.5MPa
Pressure Loss	≤100Pa	≤600Pa
Working Temperature	-10°C ~ +55°C
Storage Temperature	-20°C ~ +65°C
Humidity	<95%RH (no icing or condensation)
Keyboard	3 keys
Pin Out	5 Pins, NS-TECH CD R-5
Mechanical Connection	BST1/4 (R1/4)
Calibration	Air @20°C, 101.325kPa
Weight	75g

Note: For N2O and CO2, ATO-MF4003 is selectable with 2 L/min, without 5 L/min; ATO-MF4008 is selectable with 20 L/min, without 50 L/min.

Dimension (unit: mm)

Detail

Wiring Diagram Instruction

Pinout	Thread Color	Definition
1	Blue	TX, RS232 digital signal transmission / RS485B
2	Green	Vout, analog voltage output positive
3	Red	VCC, power input positive (8 - 24 Vdc)
4	Black	GND, power/signal ground
5	Yellow	RX, RS232 digital signal receive / RS485A

Application

Tips: Working principle of small gas mass flow meter

A mini gas mass flow meter calculates the mass flow rate of a gas by measuring the change in heat generated by the gas as it flows through the sensor. The sensor usually consists of two temperature probes, one located before the gas flows and the other after. As the gas flows, heat is transferred from the sensor to the gas, resulting in a change in temperature. Based on this change, the flow meter is able to derive the mass flow rate of the gas.

Small gas mass flow meters are widely used in industrial gas measurement, laboratory testing, medical equipment and environmental monitoring. They are particularly suitable for applications where precise gas quality control is required, such as gas pipeline monitoring, gas consumption monitoring and gas delivery systems.

Existing reviews of Small Gas Mass Flow Meter, Air/O2/N2, 0-2/5/50L/min

Please give me some recommendations

I want to fill some new double pane insulated window glass units with krypton gas. Thus, I would be using your flow meter to monitor a very slow flow rate (filling through a small 1/32" capillary tube at the bottom of the window unit while the air inside will flow out a capillary tube near the top of the unit.) The windows have a gas volume of 10 liters. I would want a flow rate around 1 liter per minute. Pressures will remain very close to atmospheric pressure. I will also be looking for a regulator to lower the bottle pressure of ~1000psi to 1 psi.

From: Hollisen | Date: 17/10/2024