Detection Limit

1 ppm

Resolution

0.5 ppm

Response Time

≤ 20 seconds at 20°C (T50) or 68°F

Measurement accuracy

Zero Point:  ≤ ± 3 ppm
Sensitivity:  ≤ ± 5% of measured value

Long-term drift, at 20°C (68°F)

Zero Point:  ≤ ± 5 ppm/year
Sensitivity:  ≤ ± 2% of measured value/month

Warm-up time:

≤ 18 hours

Ambient conditions

Temperature: (-20°C to 50°C)(-4 to 122°F)
Humidity: (10 to 90)% RH
Pressure: (700 to 1,300) hPa

Influence of Temperature

Zero Point:  ± 2 ppm (-20°C to 40°C)(-4 to 104°F)
Zero Point:  ± 0.5 ppm/k (-40°C to 50°C)(104 to 122°F)
Sensitivity:  ≤ ± 1% of measured value/K

Influence of Humidity

Zero Point:  No Effect
Sensitivity:  ≤ ± 0.2% of measured value/% RH

Test Gas

approx. 10 ppm C2H4O
The Drager Sensor XXS OV has a defined cross-sensitivity to carbon monoxide (CO). It can be calibrated with CO as a replacement for all of its target gases. This replacement calibration using CO can produce an additional measuring error of up to 20%. We recommend that devices are calibrated with the gas you intend to detect in actual operation. Calibration using the target gas is more accurate than replacement gas calibration.