The GS Oxygen Sensor KE series (KE-25 and KE-50)

The GS Oxygen Sensor KE series (KE-25 and KE-50) is a unique galvanic cell type oxygen sensor which was developed in Japan in 1985. Its most notable features are long life expectency, excellent chemical durability, and it is not influenced by CO 2 . The KE series oxygen sensor is ideal to meet the ever-increasing demand for oxygen monitoring in various fields such as combustion gas monitoring, the biochemical field, medical applications, domestic combustion appliances, etc.

Features:

* Long life

    KE-25 - 5 years / KE-50 - 10 years in ambient air

* Virtually no influence from CO 2 , CO, H 2 S, NOx, H 2

* Low cost

* Operates in normal ambient temperatures

* Stable output signal

* No external power supply required for sensor operation

* No warmup time is required

Applications:

* Medical - Anesthetic instruments, respirators, oxygen-enrichers

* Biotechnology - Oxygen incubators

* Food industry - Refrigeration, greenhouses

* Safety - Air conditioners, oxygen detectors, fire detectors

Specifications

Measurement range:  0 ~ 100% O2  

Accuracy:  KE-25 :±1%(full scale); KE-50: ±2%(full scale)

operating conditions: 

    Atmospheric pressure: 811 hPa ~ 1216 hPa

    Temperatire: 5 ~ 40'C

    Relative humidity: 10 ~ 90%R.H.(no cindensation)

Response time(90%):  KE-25: 14±2 seconds ; KE-50: 60±5 seconds

Initial ouput voltage under standard test conditions:  KE-25: 10.0 ~ 15.5mV ; KE-50:  47 ~ 65mV

Atandard test conditions

    Test gas: 21% O2

    Atmospherture: 1013±5hPa

    Temperature: 25'C±1'C

    Relative humidity: 60±5%

Linearity( (Va-V0)/(V100-V0) ) :0.21±0.02

Offset voltage (V0): KE-25:  ≤0.5mV ;  KE-50: ≤6.0mV

Temperature(VH/Va):  0.91 ~ 1.09

characteristics(VL/Va): 0.91 ~ 1.09