CS215-L Temperature and Relative Humidity Probe
The CS215 is a temperature and relative humidity probe that uses a Swiss-made digital humidity and temperature element that makes accurate and stable measurements. The element is based on Sensirion's CMOSens technology, which has been tested for more than two years in alpine conditions. The CS215 outputs an SDI-12 signal that is measurable by most Campbell Scientific data loggers.
- CS215-L Temperature and Relative Humidity Probe uses a combined digital humidity and temperature element
- Field changeable element allows on-site recalibration
- Digital SDI-12 output
- Simple data logger programming
- Low power consumption
- Accurate and stable measurements
- Field changeable element allows on-site recalibration
- Each sensor element is individually calibrated so no further adjustment of the probe is required
- Wide operating range
| Sensing Element | Sensirion SHT75 |
| Measurement Description | Temperature, relative humidity |
| Signal Type/Output | SDI-12 |
| Communication Standard | SDI-12 V1.3 (responds to a subset of commands) |
| Housing Material | Anodized aluminum |
| Housing Classification | IP65 (NEMA 4) |
| Sensor Protection | Outer glass-filled polypropylene cap. Inner expanded PTFE filter. Filter material has a porosity of 64% and a pore size of < 3μm. |
| Supply Voltage |
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| Typical Current Drain |
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| EMC Compliance | Tested and conforms to IEC61326:2002. |
| Operating Temperature Range | -40° to +70°C |
| Field Replaceable Chip or Recalibrate | Field-replaceable chip |
| Diameter |
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| Length | 18.0 cm (7.1 in.) including strain relief |
| Weight | 150 g (5.3 oz) with 3.05 m (10 ft) cable |
Relative Humidity |
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| Measurement Range | 0 to 100% RH (-20° to +60°C) |
| Output Resolution | 0.03% RH |
| Accuracy |
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| Short-Term Hysteresis | < 1% RH |
| Temperature Dependence | Better than ±2% (-20° to +60°C) |
| Typical Stability | ±1.0% per year |
| Response Time with Filter | < 20 s (63% response time in still air) |
| Calibration Traceability | NIST and NPL standards |
Air Temperature |
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| Measurement Range | -40° to +70°C |
| Output Resolution | 0.01°C |
| Accuracy |
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| Response Time with Filter | < 120 s (63% response time in air moving at 1 m s-1) |
