YJJ FRn03H MEMS Thermal Micro Gas Mass Flow Sensor 50~2000SCCM for Gas Analyzer & Medical Ventilator

Product Description:

YJJ FRn03H MEMS Thermal Micro Gas Mass Flow Sensor 50~2000SCCM for Gas Analyzer & Medical Ventilator

Features:

FRn03H MEMS thermal micro gas flow sensor

Principle: MEMS thermal mass flow, **directly measures mass flow, no need for temperature and pressure compensation**; FRn03H is an upgraded version of FR03H, with significantly improved zero-point stability, low pressure loss, and micro-flow measurement capability. Winsen Ele...

Core flow parameters

- Optional range: **50 / 100 / 200 / 300 / 400 / 500 / 1000 / 2000 SCCM (0.05~2 SLM)**, factory calibrated with air (20℃, 101.325kPa) Winsen Ele...
- Measurement accuracy: ±(2+0.5% FS)
- Repeatability: 0.5%
- Maximum working pressure: 200 kPa
- Maximum pressure loss: ≤150 Pa (low pressure loss, friendly for micro-flow systems)
- Response time: ≤50 ms
- Measured medium: dry, clean, non-corrosive gases (air, N2, O2, etc.)

Electrical parameters

- Supply voltage: **5~15 VDC**
- Working current: ≤30 mA
- Signal output: **I²C digital + 0.5~4.5V analog voltage** dual output
- I²C communication rate: 100 kHz
- Electrical interface: PH2.0-5P plug / 2.54mm 5P socket (either option)

Environmental parameters

- Working temperature: 0℃ ~ +50℃
- Storage temperature: -20℃ ~ +65℃
- Mechanical interface: DN3 flexible hose quick-connect interface

Product features

1. MEMS thermal mass flow, direct mass flow output, no need for temperature and pressure compensation
2. FRn03H upgraded version, smaller zero drift, stronger full-scale stability
3. Extremely low pressure loss, suitable for micro-flow gas ratioing, and precise gas supply control
4. Dual signal output, digital I2C for easy acquisition by microcontrollers, analog voltage compatible with traditional acquisition boards
5. Compact in size, convenient for integration into portable analyzers and medical equipment

Typical application

1. Internal sample gas flow monitoring for gas analyzers and smoke gas analyzers (compatible with your previous Solman smoke gas analyzer)
2. Medical equipment: ventilators, anesthesia machines, micro-flow monitoring for oxygen delivery
3. Gas ratio and gas dilution devices, micro-gas control in laboratories
4. Fuel cells, gas leak detection, flow monitoring for small industrial pneumatic circuits

Specifications: