136 [5.35]
Ø 25
[0.98]
M12/5
Ø 12
[0.47]
99.5 [3.92]
79.5 [3.13]
37.5 [1.48]
Groove for
lock ring
Ø 12
[0.47]
Ø 5
[0.2]
Probe cable
2 m [6.56 ft] or 10 m [32.8 ft]
mm
[in]
Figure 47 HMP7 probe dimensions
9.6
 HMP8 specifications
Table 36 HMP8 measurement performance
Property Description/Value
Relative humidity
Measurement range 0 … 100 %RH
Accuracy at +23 °C (+73.4 °F) 
1)
±0.8 %RH (0 … 90 %RH)
Factory calibration uncertainty 
2)
±0.5 %RH (0 … 40 %RH)
±0.8 %RH (40 … 95 %RH)
T
63
 response time 15 s
Sensor options HUMICAPâ R2
HUMICAPâ R2C 
3)
Temperature
Measurement range −70 … +180 °C (−94 … +356 °F)
Accuracy at +23 °C (+73.4 °F) 
1)
 
1)
 
4)
±0.1 °C (±0.18 °F)
Chapter 9 – Technical data
81