Chapter 7 _____________________________________________________________ Technical Data
JUMO _________________________________________________________________________ 149
Optional Temperature Probe
Temperature measurement
range:
-70 ... + 180 ºC (-94 ... +356 ºF)
Typical accuracy:
0.1 ºC (0.18 ºF)
Sensor:
Pt100 PRT DIN IEC 751 class 1/4 B
Cable length:
2 m, 5 m, and 10 m
Pressure tight:
up to 7 bar
Probe material:
stainless steel
Calculated Variables
Table 29
Calculated Variables (Typical Ranges)
Variable
907023/331 probe
907023/333 probe
907023/334/335/337/
338 probes
Dewpoint temperature
-20 ... +60 ºC
-20 ... +80 ºC
-20 ... +100 ºC
Mixing ratio
0 ... 160 g/kg dry air
0 ... 500 g/kg dry air
0 ... 500 g/kg dry air
Absolute humidity
0 ... 160 g/m
3
0 ... 500 g/m
3
0 ... 500 g/m
3
Wet bulb temperature
0 ... 60 ºC
0 ... +100 ºC
0 ... +100 ºC
Enthalpy
-40 ... +1500 kJ/kg
-40 ... +1500 kJ/kg
-40 ... +1500 kJ/kg
Water vapor pressure
0 ... 1000 hPa
0 ... 1000 hPa
0 ... 1000 hPa
Accuracies of Calculated Variables
Accuracies of the calculated variables depend on the calibration
accuracy of the humidity and temperature sensors; here the accuracies
are given for ± 2 %RH and ± 0.2 °C.
Accuracy of Dewpoint Temperature °C
Relative humidity
Temp.
10
20
30
40
50
60
70
80
90
100
-40
1.86 1.03
0.76
0.63
0.55
0.50
0.46
0.43
—
—
-20
2.18 1.19
0.88
0.72
0.62
0.56
0.51
0.48
—
—
0
2.51 1.37
1.00
0.81
0.70
0.63
0.57
0.53
0.50
0.48
20
2.87 1.56
1.13
0.92
0.79
0.70
0.64
0.59
0.55
0.53
40
3.24 1.76
1.27
1.03
0.88
0.78
0.71
0.65
0.61
0.58
60
3.60 1.96
1.42
1.14
0.97
0.86
0.78
0.72
0.67
0.64
80
4.01 2.18
1.58
1.27
1.08
0.95
0.86
0.79
0.74
0.70
100
4.42 2.41
1.74
1.40
1.19
1.05
0.95
0.87
0.81
0.76
120
4.86 2.66
1.92
1.54
1.31
1.16
1.04
0.96
0.89
0.84
140
5.31 2.91
2.10
1.69
1.44
1.26
1.14
1.05
0.97
0.91
160
5.80 3.18
2.30
1.85
1.57
1.38
1.24
1.14
1.06
0.99
