A P-type metal oxide CO sensor CO-A31/F M31/F P31/F Product Introduction

The metal oxide sensor can work well in ambient conditions and also in extreme temperature and humidity environments that electrochemical sensors cannot handle. The sensor is equipped with a filter that is selective for CO. Unlike the common n-type sensor, the metal oxide sensor has a large dynamic range, a repeatable response, little influence by humidity, and an increase in resistance when exposed to CO.

The sensor is available in 3 housings: TO-05 housing, 6-pin plastic housing and Ex explosion-proof housing.

Two p-type metal oxide CO sensor CO-A31/F M31/F P31/F main characteristics

1) Range: 5-500ppm CO

2) Sensor resistance (R0):135±25 kΩ (50% rh, 23 (± 2)℃)

3) Sensor resistance (Rg):160 ±10 kΩ (CO @ 10ppm<< span = ""> in air>)

4) Sensor resistance ratio (Rg/ R0 * 100%):120 ±3% (CO @ 10ppm<< span = ""> in air>)

5) Gas response relation (Rg/Ro - 1 = k.Conc) : 0.01 ±10%(5-50ppm)

Gas response relation (Rg/Ro - 1 = k.Conc0.5): 0.08 ±15%(5-500ppm)

6) Heater resistance (RH @ RT):10 ±1.5 Ω (23±1 ℃)

7) Heater resistance (RH @ sensing temperature):22 ±3 Ω (400±10 ℃)

8) Heater resistance (RH @ reset temperature):26 ±3 Ω (525±10 ℃)

9) Typical heating power consumption (mW) at 5:1 cycle: 340 ±30 (400 ℃) (VH = 2.7 ±0.2V)

530 ±50 (525℃)(VH = 3.7 ±0.3V)

10) Working temperature:-20~120 ℃