HMP60-L Temperature and Relative Humidity Probe
Accurate, Rugged
Ideal for long-term, unattended applications
Documents WEATHER Documents WATER Documents ENERGY Documents GAS FLUX & TURBULENCE Documents INFRASTRUCTURE Documents SOIL

Overview

The HMP60, manufactured by Vaisala, probe measures temperature for the range of -40° to 60°C, and relative humidity for the range of 0 to 100% RH. It is suitable for long-term, unattended monitoring, and is compatible with all Campbell Scientific dataloggers.

Read More

Benefits and Features

  • Field-replaceable humidity chip eliminates recalibration down time
  • Compatible with all Campbell Scientific dataloggers (including the CR200(X) series)
  • Can be mounted to a tower/tripod mast or crossarm
  • Compatible with the CWS900-series interfaces, allowing it to be used in a wireless sensor network

Images

HMP60
HMP60
HMP60
HMP60 with RAD06 mounted to a pole

Detailed Description

The HMP60 uses the INTERCAP capacitive RH chip. This chip is field-replaceable, which eliminates the downtime typically required for the recalibration process.

Specifications

Supply Voltage 5 to 28 Vdc (typically powered by datalogger’s 12 V supply)
Current Consumption
  • 1 mA (typical)
  • 5 mA (maximum)
Filter Description 0.2 µm Teflon membrane
Settling Time 1 s
Sensor Diameter 1.2 cm (0.5 in.)
Filter Diameter 1.2 cm (0.5 in.)
Length 7.1 cm (2.8 in.)
Weight 0.05 kg (0.1 lb) with 1.83-m (6-ft) cable

Housing

Body Material AISI 316 stainless steel
Filter Cap Material Chrome-coated ABS plastic
Classification IP65

Temperature

Temperature Sensor 1000 ohm Platinum Resistance Thermometer
Measurement Range -40° to +60°C
Accuracy ±0.6°C

Relative Humidity

Sensor Vaisala’s INTERCAP capacitive chip
Measurement Range 0 to 100% RH (non-condensing)

Relative Humidity - Accuracy

Typical Accuracy at -40° to 0°C
  • ±5% (0 to 90% RH)
  • ±7% (90 to 100% RH)
Typical Accuracy at 0° to 40°C
  • ±3% (0 to 90% RH)
  • ±5% (90 to 100% RH)
Typical Accuracy at 40° to 60°C
  • ±5% (0 to 90% RH)
  • ±7% (90 to 100% RH)

Compatibility

Mounting

The HMP60 is typically housed in a 41303-5A 6-plate naturally aspirated shield.

This probe may also be housed in a 41003-5 10-plate shield if additional hardware is used. A 41322 Adapter Plate allows the HMP60 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 HMP60 in a higher part of the 41003-5; the pn 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.

Datalogger Considerations

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR6 CR9000X CR300 Series

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X

Frequently Asked Questions

Number of FAQs related to HMP60-L: 8

Expand AllCollapse All

  1. The HMP60-L (with the Campbell Scientific cable) cannot be used with the 41003-5 10-Plate Radiation Shield without the use of additional hardware. For more information, refer to the Compatibility information on the HMP60-L product page. The standard radiation shield for the HMP60-L is the 41303-5A.

  2. In general, the element should be replaced every two years. By doing a field check (that is, comparing the RH reading with a reference), the element can be used until the relative humidity measurement is out of tolerance.

  3. The most significant difference is that the CS215-L has an SDI-12 output and that the HMP60-L has a voltage output. Additional differences are outlined in the “Air Temperature & Relative Humidity” brochure, which compares all of the Campbell Scientific temperature and relative humidity sensors. 

  4. Not every sensor has different cable termination options. The options available for a particular sensor can be checked by looking in two places in the Ordering information area of the sensor product page:

    • Model number
    • Cable Termination Options list

    If a sensor is offered in an –ET, –ETM, –LC, –LQ, or –QD version, that option’s availability is reflected in the sensor model number. For example, the 034B is offered as the 034B-ET, 034B-ETM, 034B-LC, 034B-LQ, and 034B-QD.

    All of the other cable termination options, if available, are listed on the Ordering information area of the sensor product page under “Cable Termination Options.” For example, the 034B-L Wind Set is offered with the –CWS, –PT, and –PW options, as shown in the Ordering information area of the 034B-L product page.

    Note: As newer products are added to our inventory, typically, we will list multiple cable termination options under a single sensor model rather than creating multiple model numbers. For example, the HC2S3-L has a –C cable termination option for connecting it to a CS110 instead of offering an HC2S3-LC model. 

  5. Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:

    • An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
    • An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.

    If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field in the product’s Ordering information. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.

    If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.

    • –ET models terminate with the connector for an ET107 weather station.
    • –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
    • –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
    • –PW models terminate with the connector for a PWENC or pre-wired system.
  6. Note the difference between calibration and a field check. Calibration cannot be done in the field, as it requires an experienced technician and specialized equipment.

    Field checks of measurements can be done to determine if the data make sense with the real-world conditions. Follow these steps to field check a sensor:

    1. Find a second sensor of the same type as the installed sensor whose data is in question. The second sensor will be used as a benchmark sensor and should be known to be accurate or recently calibrated.
    2. At the site, take readings using both sensors under the same conditions. The best practice is to measure both sensors side-by-side at the same time. Note that the sensors will never have the exact same measurement.
    3. Depending on the sensor model, if the difference in the readings of the installed and benchmark sensors is greater than the sum of the accuracies for both sensors, either return the installed sensor to Campbell Scientific for calibration or replace the appropriate chip.
      • The 107, 108, 109, 110PV-L, and BlackGlobe-L temperature sensors can be calibrated.
      • The HC2S3-L and HMP155A-L temperature and relative humidity sensors can be calibrated.
      • The CS215-L has a replaceable chip for temperature and relative humidity. For more information, refer to the “Maintenance and Calibration” section of the CS215 instruction manual.
      • The HMP60-L has a replaceable chip for relative humidity only. For more information, refer to the “Maintenance” section of the HMP60 instruction manual.
  7. Many Campbell Scientific sensors are available with different cable termination options. These options include the following:

    • The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a datalogger.
    • In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
    • In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
    • In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
    • In the –RQ (–RQ w/RAWS Connector) option, the cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.

    Note: The availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact Campbell Scientific for assistance.

  8. To incorporate a sensor that is compatible with wireless sensor interfaces into a wireless network, a CWS900-series wireless sensor interface is needed, as well as an A205 CWS-to-PC interface to configure it.