Original Honeywell 4NH3-100 / 4NH3-500 Combustible Gas Sensors

Specs

4NH3-100

Detected Gas: NH₃ Ammonia
Range: 0 ~ 100 ppm; Maximum overload: 200 ppm
Sensitivity: 0.15 ±0.07 μA/ppm
Zero Current at 20℃: <±1.2 μA
Resolution: <0.5 ppm
T90 Response Time: ≤150 s
Long-term Drift: <2% signal/month
Bias Voltage: 300 mV (must be set)
Operating Temperature: −20℃ ~ 40℃; Intermittent: −40~50℃
Humidity: 15 ~ 90% RH (no condensation!)
Pressure: 91 ~ 111 kPa
Expected Lifetime: 2 years in air; 12-month factory warranty
Package: 4 series standard cylinder, 3-pin, Weight ≈5g
Storage: Sealed package, 6 months, Storage Temp: 0~20℃

4NH3-500

Detected Gas: CO Carbon Monoxide
Range: 0 ~ 500 ppm CO; Maximum Overload: 1000 ppm CO
Sensitivity: 50 ±10 nA/ppm (narrower, more consistent than 2E)
T90 Response Time: <30 s (20℃, 50%RH)
Clean Air Zero Offset: −2 ~ 4 ppm eq.
Temperature Drift (−10 ~ 50℃): <10 ppm eq.
Linearity: ±5% FS; Repeatability: <±5%
Long-term Drift: <5% signal per year
Recommended Load Resistance: 5 Ω
Bias Voltage: Not required
Operating Temperature: Continuous −10 ~ 50℃; Intermittent −20 ~ 50℃
Humidity: Continuous 15~90% RH (no condensation); Intermittent 0~99% RH (no condensation)
Pressure: 1 atm ±10%
Weight: ≈5 g; 4 series standard cylinder package, 2-pin, fully compatible with ECO-SURE (2E) pins
Expected Lifetime: ≥10 years (factory warranty 10 years)
Storage Life: 6 months in original sealed package

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