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.Read More
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.
|Electronics Operating Limits||-40° to +100°C|
|Storage Temperature Range||-50° to +100°C|
|Supply Voltage||5 to 24 Vdc|
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)|
|Diameter||15 mm (0.6 in.)|
|Weight||10 g (0.35 oz)|
-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.|
|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.|
Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.
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.