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| Calibration | Yes |
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.
Read MoreThe "-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.
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.
| Electronics Operating Limits | -40° to +100°C |
| Storage Temperature | -50° to +100°C |
| Filter | Polyethylene (standard) or Teflon (optional, ordered separately) |
| Current Consumption |
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| 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 |
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| Weight | 10 g (0.35 oz) |
Analog Outputs |
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| Offset at 0 V | ±3 mV (maximum) |
| Deviation for Digital Signal | < ±1 mV (0.1°C, 0.1% R. H.) |
Air Temperature |
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| 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 |
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| Temperature Accuracy | Refer to the graph in the manual. |
Relative Humidity |
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| 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 |
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| RH Accuracy over Temperature | Refer to the graph in the manual. |
The military style connector attaches to the RAWS-F Fire Weather Quick Deployment Station, which has an on-board CR1000.
The HC2S3-QD should be housed in a 41003-5 10-plate naturally-aspirated solar radiation shield.
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