RETIRED ›
This product is no longer available and has been replaced by: HMP60-L. Some accessories, replacement parts, or services may still be available.
HMP50-L Temperature and Relative Humidity Sensor
Services Available

Overview

The HMP50 measures both temperature and relative humidity and is suitable for long-term, unattended monitoring. The humidity component features a field-replaceable chip, which eliminates downtime typically required for the recalibration process. The HMP50 is compatible with all Campbell Scientific data loggers.


Read More

Benefits and Features

  • Field-replaceable humidity chip eliminates recalibration down time
  • Can be mounted to a tower/tripod mast or crossarm

The "-L" on a product model indicates that the cable length is specified at the time of order.


Images


Detailed Description

The HMP50 measures temperature with a 1000 Ohm platinum resistance thermometer (PRT) and relative humidity (RH) with a 50Y Intercap capacitive chip. The chip is field-replaceable, which eliminates the downtime typically required for the recalibration process. This temperature and RH sensor is compatible with all Campbell Scientific data loggers.

The HMP50 should be housed in a solar radiation shield—typically the 41303-5A. The 41303-5A 6-plate naturally aspirated shield attaches to a mast, crossarm, or tower leg.


Specifications

Supply Voltage 7 to 28 Vdc (typically powered by data logger’s 12 V supply)
Current Consumption 2 mA (typical)
Housing Material Chrome-coated aluminum and chrome-coated ABS plastic
Operating Temperature Range -40° to +60°C
Diameter 1.2 cm (0.47 in.)
Length 7.1 cm (2.8 in.)
Weight 0.05 kg (0.1 lb) with 1.83-m (6-ft) cable

Relative Humidity

Sensor Vaisala’s INTERCAP capacitive chip
Measurement Range 0 to 98% RH (non-condensing)
Accuracy
  • ±3% (0% to 90% range)
  • ±5% (90% to 98% range)
Temperature Dependence See graph in product brochure.

Temperature

Temperature Sensor 1000 ohm Platinum Resistance Thermometer
Measurement Range -40° to +60°C
Accuracy See graph in product brochure.

Compatibility

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Dataloggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800 (retired)
CR850 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information

Mounting

The HMP50 is typically housed in a 41303-5A 6-plate naturally aspirated shield.

It may also be housed in a 41003-5 10-plate shield if additional hardware is used. A 41322 Adapter Plate allows the HMP50 to be mounted in the lower part of the 41003-5 10-plate shield. Alternatively, a 41381 extension tube and the 6637 split nut plug can be used to mount the HMP50 in a higher part of the 41003-5; the #41381 cable is also required.

Both the 41303-5A and the 41003-5 attach to a crossarm, mast, or user-supplied pipe with a 1.0-in. to 2.1-in. outer diameter.



Case Studies

South Africa: Solar Prospecting
Historically, the South African energy sector had been monopolized by a single state-owned utility company......read more
Solar Decathlon
The Solar Decathlon takes place every other year on the National Mall in Washington, D.C.......read more
Israel: Marine Meteorology on the Red Sea
The meteorological stations at the Interuniversity Institute for Marine Sciences at Eilat (IUI) in Israel......read more
Texas: College Weather Station
The Austin College Weather Station (ACWX) is located on Austin College's Sneed Environmental Research Area,......read more

Privacy Policy Update

We've updated our privacy policy.  Learn More