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Accurate and Rugged
Wired for RAWS-F Station
weather applications water applications energy applications gas flux & turbulence applications infrastructure applications soil applications

Overview

The HC2S3-QD is a rugged, accurate temperature and humidity probe that is ideal for long-term, unattended applications. The probe uses an advanced capacitive sensor to measure relative humidity. The probe includes a filter to protect the sensor from dust and particles, for superior performance and reliability.

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The "-QD" version of this product has a cable that terminates in a military style connector (instead of pigtails) and is the ideal length for attachment to a RAWS-F Fire Weather Quick Deployment Station.

Detailed Description

The HC2S3-QD comes with a polyethylene filter that protects its sensor from fine dust and particles and minimizes water absorption and retention. Alternatively, a Teflon filter is available for marine environments. The response time is slower when using the Teflon filter.

Specifications

Electronics Operating Limits -40° to +100°C
Storage Temperature -50° to +100°C
Filter Polyethylene (standard) or Teflon (optional, ordered separately)
Current Consumption
  • < 4.3 mA (@ 5 Vdc)
  • < 2.0 mA (@ 12 Vdc)
Supply Voltage 5 to 24 Vdc
Startup Time 1.5 s (typical) The startup time is Rotronics specification. For programming, Campbell Scientific recommends a 2 s delay at 60°C, 3 s delay at 0°C, and 4 s delay at -40°C.
Maximum Startup Current < 50 mA for 2 μs
Diameter 15 mm (0.6 in.)
Cable Length 165.1 cm (65 in.)
Length
  • 85 mm (3.3 in.) without connector
  • 121 mm (4.75 in.) with connector
Weight 10 g (0.35 oz)

Analog Outputs

Offset at 0 V ±3 mV (maximum)
Deviation for Digital Signal < ±1 mV (0.1°C, 0.1% R. H.)

Air Temperature

Temperature Sensor PT100 RTD, IEC 751 1/3 Class B
Measurement Range -40° to +60°C (default) Air temperature measurement ranges from -50° to +100°C are possible; contact Campbell Scientific for more information.
Output Signal Range 0 to 1 V
Accuracy at +23°C ±0.1°C (with standard configuration settings)
Long-Term Stability < 0.1°C/year
Sensor Time Constant
  • 63% step change (1 m/s air flow at sensor)
  • ≤ 22 s (standard PE filter)
  • ≤ 30 s (optional Teflon filter)
Temperature Accuracy Refer to the graph in the manual.

Relative Humidity

Sensor ROTRONIC® Hygromer IN-1
Measurement Range 0 to 100% RH (non-condensing)
Output Signal Range 0 to 1 Vdc
Long-Term Stability < 1% RH per year
Response Time Typical 10 s, 63% of a 35% to 80% RH step change (1 m/s air flow at sensor)
Accuracy at +23°C ±0.8% RH (with standard configuration settings)
Sensor Time Constant
  • 63% of a 35 to 80% RH step change (1 m/s air flow at sensor)
  • ≤ 22 s (standard PE filter)
  • ≤ 30 s (optional Teflon filter)
RH Accuracy over Temperature Refer to the graph in the manual.

Compatibility

The military style connector attaches to the RAWS-F Fire Weather Quick Deployment Station, which has an on-board CR1000.

Mounting

The HC2S3-QD should be housed in a 41003-5 10-plate naturally-aspirated solar radiation shield.

Frequently Asked Questions

Number of FAQs related to HC2S3-QD: 3

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  1. 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.
  2. 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. 

  3. 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.

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