Product Description:

YJJ MF2025BE-AB-A MEMS Thermal Gas Mass Flowmeter for Industrial Gas Measurement

Features:

I. Model Disassembly (MF2025BE-AB-A)

MF2025: Series, **DN25 (1")** diameter

B: Basic type (with display)

E: Aluminum alloy tube body

AB: Output combination RS485 + 4-20mA

A: Standard range / conventional configuration

II. Core Parameters

1. Measurement Performance

Measured medium: Air, nitrogen, oxygen, argon, carbon dioxide, etc. dry and clean gases

Diameter: DN25 (1"), internal thread G1"

Range (air, 20°C/1 atm): 2–100 m³/h (standard)

Accuracy: ±(2.0% reading + 0.5% FS)

Repeatability: ≤±0.5%FS

Range ratio: 50:1 (wide range)

Response time: ≤2 s

2. Electrical and Interfaces

Power supply: 24 VDC ±10%

Output: RS485 (Modbus-RTU) + 4-20mA (flow rate)

Display: LED, 4-digit instantaneous flow + 8-digit cumulative quantity

Power consumption: ≤2 W

3. Environmental and Mechanical

Operating temperature: -10°C to +55°C; environmental -20°C to +60°C

Operating pressure: ≤1.0 MPa

Humidity: 0–95% RH (no condensation)

Material: Aluminum alloy (tube body), 316L (contact liquid)

Protection class: IP65 (dust and waterproof, outdoor use)

Installation: Horizontal / vertical, no need for straight pipe section (advantage of thermal type)

4. Key Features

MEMS thermal type principle: Direct measurement of mass flow rate, no temperature / pressure compensation

Low power consumption chip: Long-term stability, small drift

Data storage: Historical records can be exported for analysis

Aluminum alloy housing: Lightweight (about 1.2 kg), resistant to vibration

III. Main Applications

1. Industrial gas measurement (core)

Compressed air: Monitoring of workshop / equipment gas usage, energy cost allocation, energy-saving audit

Nitrogen / oxygen / argon: Chemicals, electronics, welding, heat treatment gas flow control

Carbon dioxide: Food packaging, greenhouses, welding shielding gas

2. Environmental and energy

Waste gas / exhaust gas: Monitoring of low-concentration clean emissions gases

Gas / biogas: Domestic / industrial gas quality flow measurement (dry and free of impurities)

Energy management: Factory gas energy consumption monitoring, cost accounting

3. Manufacturing support

Electronics / semiconductor: Precise ratio and flow control of high-purity gases (N2/O2/Ar)

Food /: Monitoring of sterile gas, protection gas flow

Welding / cutting: Stable control of protection gas (Ar/CO2)

4. Laboratory and general equipment

Experimental gas: Small flow, high precision gas ratio and measurement

Combustion control: Quality flow closed-loop control of gas / auxiliary gas

IV. Model Comparison (same series)

MF2025BE-AB-A: DN25, 2–100 m³/h, RS485 + 4-20mA, with display (this model)

MF2032: DN32, 5–160 m³/h

MF2050: DN50, 10–400 m³/h

V. Installation and Notes

Medium must be dry, clean, free of oil, and without condensate water

Avoid strong vibration, strong electromagnetic interference (away from frequency converter)

When installed horizontally, the display faces upwards; when installed vertically, the flow direction is from bottom to top

Specifications: