The Vaisala HUMICAP® Humidity and Temperature Probe HMP155 provides reliable humidity and temperature measurement. It is designed especially for demanding outdoor applications.
Performance
RELATIVE HUMIDITY
Measurement range 0 … 100 %RH
Accuracy (incl. non-linearity, hysteresis
and repeatability) at
+15 … +25 °C (+59 … +77 °F) ±1 %RH (0 … 90 %RH)
±1.7 %RH (90 … 100 %RH)
-20 … +40 °C (-4 … 104 °F) ±(1.0 + 0.008 x reading) %RH
-40 … -20 °C (-40 … -4 °F) ±(1.2 + 0.012 x reading) %RH
+40 … +60 °C (+104 … +140 °F) ±(1.2 + 0.012 x reading) %RH
-60 … -40 °C (-76 … -40 °F) ±(1.4 + 0.032 x reading) %RH
Factory calibration
uncertainty (+20 °C /+68 °F)
±0.6 %RH (0 … 40 %RH)*
±1.0 %RH (40 … 97 %RH)*
* Defined as ±2 standard deviation limits. Small variations possible,
see also calibration certificate.
Recommended humidity sensor HUMICAP®180R(C)
Response time at +20 °C in still air with
a sintered PTFE filter
63 % 20 s
90 % 60 s
TEMPERATURE
Measurement range -80 … +60 °C (-112 … +140 °F)
Accuracy with voltage output at
-80 … +20 °C ±(0.226 – 0.0028 x temperature) °C
+20 … +60 °C ±(0.055 + 0.0057 x temperature) °C
passive (resistive) output
according to IEC 751
1/3 Class B
±(0.1 + 0.00167 x |temperature|)°C
RS485 output
-80 … +20 °C ±(0.176 – 0.0028 x temperature) °C
+20 … +60 °C ±(0.07 + 0.0025 x temperature) °C
Accuracy over temperature range (opposite)
Temperature sensor Pt100 RTD 1/3 Class B IEC 751
Response time with additional temperature
probe in 3 m/s air flow
63 % <20 s
90 % <35 s
OTHER VARIABLES
dewpoint/frost point temperature,
wet bulb temperature, mixing ratio
General
Operating temperature range -80 … +60 °C (-112 … +140 °F)
Storage temperature range -80 … +60 °C (-112 … +140 °F)
Connection 8-pin male M12 connector
Connection cables 3.5, 10, and 30 m
Cable material PUR
Wire size AWG26
Service cables USB connection cable
MI70 connection cable
Additional T probe cable length 2 m
Housing material PC
Housing classification IP66
Sensor protection sintered PTFE
optional membrane filter
Weight (probe) 86 g
Electromagnetic compatibility: Complies with the EMC standard
EN61326-1, Electrical equipment for measurement control and
laboratory use – EMC requirement for use in industrial locations
Inputs and Outputs
Operating voltage 7 … 28 VDC*
*Note: minimum operating voltage 12 V with 0 … 5 V output
and 16 V with 0 … 10 V output, probe heating, chemical purge or
XHEAT.
Outputs
voltage output 0 … 1 V, 0 … 5 V, 0 … 10 V
resistive Pt100 (4-wire connection)
RS485
Average current consumption
(+15 VDC, load 100 kOhm)
0 … 1 V output <3 mA
0 … 10 V output +0.5 mA
RS485 <4 mA
during chemical purge max. 110 mA
with warmed probe max. 150 mA
Settling time at power-up
voltage output 2 s
RS485 3 s
Documents
Contact us
If you are thinking of carrying out a project, would like to purchase any instrumentation type or would like more information about DILUS services, please leave your contact information. The team will contact you as soon as possible.HMP155 Humidity and Temperature Probe, leave your details. The team will contact you as soon as possible.