RETIRED ›
This product is no longer available and has been replaced by: EE181-L. Some accessories, replacement parts, or services may still be available.
HC2S3-L Temperature and Relative Humidity Probe
Services Available
Calibration Yes

Overview

The HC2S3, manufactured by Rotronic, 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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Benefits and Features

  • Well-suited for long-term, unattended applications
  • Accurate and rugged
  • Compatible with all Campbell Scientific dataloggers (including the CR200(X) series)

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Detailed Description

The HC2S3 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 Range -50° to +100°C
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 a Rotronics specification. For programming, Campbell Scientific recommends a 2 s delay at 60°C, a 3 s delay at 0°C, and a 4 s delay at -40°C.
Maximum Startup Current < 50 mA (for 2 μs)
Analog Outputs
  • ±3 mV (maximum) offset at 0 V.
  • < ±1 mV (0.1°C, 0.1% R. H.) deviation for digital signal
Diameter 15 mm (0.6 in.)
Length
  • 85 mm (3.3 in.) without connector
  • 183 mm (7.25 in.) with connector
Weight 10 g (0.35 oz)

Air Temperature

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
Long-Term Stability < 0.1°C/year
Sensor Time Constant - Standard PE Filter ≤ 22 s (63% step change [1 m/s air flow at sensor])
Sensor Time Constant - Optional Teflon Filter ≤ 30 s (Typical 4 s, 63% of a step change [1 m/s air flow at sensor])
Temperature Accuracy Refer to graph in probe manual.

Relative Humidity

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

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)
CR1000X
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000 (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800
CR850
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information

Mounting

The HC2S3 should be housed in a 41003-5 10-plate naturally-aspirated solar radiation shield. This radiation shield mounts to a tripod or tower mast, crossarm, or user-supplied pole.