11. Technical Data
11.1 GMP252 Specifications
Table 47 Measurement Performance
Property Description/Value
Measurement range 0 ... 10 000 ppmCO
2
(up to 30 000 ppmCO
2
with reduced accuracy)
Accuracy at 25 °C and 1013 hPa (incl. Repeatability and Non-Linearity)
0 ... 3000 ppmCO
2
±40 ppmCO
2
3000 ... 10 000 ppmCO
2
±2 % of reading
Up to 30 000 ppmCO
2
±3.5 % of reading
Calibration Uncertainty
at 2000 ppmCO
2
±38 ppmCO
2
at 10 000 ppmCO
2
±105 ppmCO
2
Long-Term Stability
0 ... 3000 ppmCO
2
±60 ppmCO
2
/year
3000 ... 6000 ppmCO
2
±150 ppmCO
2
/year
6000 ... 10 000 ppmCO
2
±300 ppmCO
2
/year
Temperature Dependence 0 ... 10 000 ppmCO
2
with compensation, -10 ... +50 °C ±0.05 % of reading/°C
with compensation, -40 ... +60 °C < ±0.1 % of reading/°C
without temperature compensation at 2000 ppmCO
2
(typical)
-0.5 % of reading/°C
Pressure Dependence
with compensation at
0 ... 10 000 ppmCO
2
, 500 ... 1100 hPa
±0.015 % of reading/hPa
without compensation (typical) +0.15 % of reading/hPa
Humidity Dependence
with compensation,
0 ... 10 000 ppmCO
2
, 0 ... 100 %RH
±0.7 % of reading (at +25 °C (+77 °F))
without compensation (typical) +0.05 % of reading/%RH
O
2
Dependence
Chapter 11 – Technical Data
103
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