Vaisala GMP231 - Manual (Page 87)

Chapter 9 _____________________________________________________________ Technical Data
VAISALA ________________________________________________________________________ 85
CHAPTER 9
TECHNICAL DATA
This chapter provides the technical data of the GMP231.
Specifications
Table 42 Performance
Property Description / Value
Measurement range 0 ... 20 %CO
2
Accuracy at 37 °C, 1013 hPa
Repeatability at 0 ... 8 %CO
2
±0.1 %CO
2
Repeatability at 8 ... 12 %CO
2
±0.2 %CO
2
Repeatability at 12 ... 20 %CO
2
±0.4 %CO
2
Non-linearity at 0 ... 20 %CO
2
±0.1 %CO
2
Calibration uncertainty at 5 %CO
2
±0.1 %CO
2
Temperature dependence
with compensation at
3 … 12 %CO
2
, 20 … 60 °C ±0.1 %CO
2
0 … 16 %CO
2
, 0 … 70 °C ±(0.1 %CO
2
+ 0.05 % of reading / °C)
16 … 20 %CO
2
, 0 … 70 °C ±1.5 %CO
2
without compensation (typical) -0.4 % of reading / °C
Pressure dependence
with compensation at
3 … 12 %CO
2
, 700 … 1100 hPa ±0.015 % of reading / hPa
0 … 20 %CO
2
, 500 … 1100 hPa ±(10 ppm + 0.020 % of reading) / hPa
without compensation (typical) +0.15 % of reading / hPa
Humidity dependence
with compensation at
0 … 20 %CO
2
, 0 … 100 %RH
±0.9% of reading (37 °C)
without compensation (typical) +0.05% of reading / %RH
O
2
dependence
with compensation at
0 … 20 %CO
2
, 0…90 %O
2
±0.6 % of reading
without compensation (typical) -0.08 % of reading / %O
2
Start-up time 10 s
Warm-up time for full spec. 1 min
Response time
T63 < 30 s
T90 < 50 s
Long-term stability
0 … 8 %CO
2
< ±0.2 %CO
2
/ year
8 % ...12 %CO
2
< ±0.5 %CO
2
/ year
12 % ... 20 %CO
2
< ±1.0 %CO
2
/ year