Vaisala HUMICAP HMP4, Quick Manual

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HMP7 Probe
99.5 [3.92]
79.5 [3.13]
37.5 [1.48]
Ø 12
[0.47]
Ø 12
[0.4
7]
Groove for
lock ring
mm
[in]
Figure 4 HMP7 Probe Head Dimensions
Vaisala HUMICAP
â
Humidity and Temperature Probe HMP7 is designed for applications which
involve constant high humidity or rapid changes in humidity such as drying and test chambers,
combustion air and other humidifiers and meteorological measurements where measurement
performance and chemical tolerance are essential.
• Probe and sensor warming functions minimize condensation on probe
• Vapor and pressure proof construction
• Stainless steel mesh filter standard in delivery
Probe Heating
HMP7 supports probe heating. Probe heating heats up not only the sensor, but the entire
probe head. When probe temperature is heated above dew point temperature, condensation
on the probe can be avoided while measuring the dew point temperature of the process.
Probe heating is disabled by default. If you enable probe heating, output parameters that are
dependent on temperature measurement (such as relative humidity) are disabled unless the
true temperature of the measured environment is updated to the temperature compensation
register of the probe from another measurement instrument (for example, the TMP1 probe).
Output parameters such as dew point temperature that can be measured or calculated
without this external temperature information are available even without the temperature
input.
HMP8 Probe
Ø 12
[0.4
7]
232 [9.13]
194 [7.64]
41 ... 149 [1.16 ... 5.87]
41 [1.61]
Ø 13.5
[0.53]
Fitting body
ISO1/2” or NPT1/2”
mm
[in]
Figure 5 HMP8 Probe Head Dimensions
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