• Product Model: 4NH3-100
• Normal Range: 0-100 ppm
• Max Range: 200 ppm
• Sensitivity: 0.10±0.03 µA/ppm
• Resolution: 0.5 ppm
• Response Time (T90): <60 seconds
• Max Zero Drift: 1 ppm (from +20℃ to +40℃)
• Repeatability: 1% output signal
• Linearity: Regression coefficient R2=0.999
• Operating Temperature: -20℃ to +50℃
• Humidity: 15%~90% RH, non-condensing
• Pressure: Atmospheric pressure ±10%
• Pressure Factor: < 0.02% signal /MBar
• Baseline Extent: <±0.4µA
• Long Term Drift: < 5% signal loss per year
• Bias Voltage: No bias voltage
• Load Resistance: 10Ω
• Built-In Filters: No
• Lifetime: 2 years (in air)
• Warranty: 1 year from the date of shipment
• Output Current Polarity: Positive current

Cross-interference data is for reference only and not guaranteed for accuracy. The sensor response to various gases is as follows:

• CO: 100 ppm results in 60 ppm sensor response
• H2: 200 ppm results in 2 ppm sensor response
• CO2, NO2, CH4, C2H4: No response

Ningxia MaiYa Sensor Technology Development Co., LTD
Address: Tower C, Yinchuan Zhongguancun Innovation Center, Helanshan Road, Xingzhou Street, Yinchuan, Ningxia, China 750000
Email: [email protected] / [email protected]
Phone: +86 189 9527 8133 / +86 182 0276 0413
Whatsapp: +86 18202760413
Website: maiyachuangan.com, maiya-sensor.com

• 4-Series sensors are for gas leak monitoring and alarms, not for long-term exposure or continuous detection.
• Sensors must be connected via a PCB socket; direct welding will damage them.
• Avoid contact with organic solvents, alcohol, paint, oil, and high concentrations of gas.
• Sensors with positive output current require oxygen for reaction and should be calibrated with air as the background gas.
• Do not remove or insert the sensor when powered on to avoid damage.