Campbell EE181-L Air Temperature and Relative Humidity Probe
Specifications
| Supply Voltage | 7 to 30 Vdc (typically powered by the datalogger’s 12 V supply) |
| Average Current Consumption | < 1.2 mA |
| Filter Description | 30 μm pore size, stainless-steel mesh |
| Startup Time | 2 s |
| Housing Body Material | Plastic |
| Housing Classification | IP65 |
| Sensor Diameter | 2.1 cm (0.83 in.) |
| Length | 16.0 cm (6.3 in.) |
| Weight | 290 g (10.2 oz) with 5 m cable |
Air Temperature |
|
| Sensor | 1000 Ω Platinum Resistance Thermometer (PRT) |
| Operating Temperature Range | -40° to +60°C |
| Storage Temperature Range | -40° to +80°C |
| Output Signal Range | 0 to 1 Vdc |
| Accuracy | ±0.2°C (at +23°C) |
Relative Humidity |
|
| Sensor | Capacitance |
| Measurement Range | 0 to 100% RH (non-condensing) |
| Output Signal Range | 0 to 1 Vdc |
| Temperature Dependence | Typically 0.03% RH/°C |
| -NOTE- | Accuracy specifications include hysteresis, non-linearity, and repeatability. |
| Accuracy at -15° to +40°C |
|
| Accuracy at -25° to +60°C | ± (1.4 + 0.01 • RH reading) % RH |
| Accuracy at -40° to +60°C | ± (1.5 + 0.015 • RH reading) % RH |
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