Campbell Scientific 083E Relative Humidity and Temperature Sensor - Manual (Page 13)

Model 083E Relative Humidity and Temperature Sensor
6. Specifications
Features:
• Relative humidity sensing element: thin film polymer capacitor
• Temperature sensing element: thermistor
Compatibility
Dataloggers: CR800
series
CR1000
CR3000
Measurement
Ranges
RH: 0 to 100% relative humidity
Temperature: -50° to 50°C (-58° to 122°F)
Accuracies
RH: ±2.0% from 0 to 100% RH
Temperature: ±0.10° C (0.18° F)
Response
RH: 10 s with 2 m/s wind aspiration
Temperature
Operating: -50° to 50°C (-58° to 122°F)
See Section 8.2,
Limitations of RH Measurement at
Below Freezing Temperatures.
Compensation: RH is temperature compensated internally
Power requirement
Source:
10 to 18 Vdc
Load: < 5 mA
Outputs
RH:
0 to 1 Vdc
Temperature: Resistive bridge
Dimensions
Length:
216 mm (8.5 in)
Diameter: 19 mm (0.75 in)
7. Installation
If the sensor is to be mounted in a radiation shield, refer to the radiation shield
manual section for mounting details. A typical installation is illustrated in the
Section 7.2, Mounting.
Sensors not installed in a radiation shield should be mounted in a representative
location having good airflow and shaded from sunlight or other radiant heat
source.
7.1 Siting
Locate sensors over an open level area at least 9 m (EPA) in diameter. The
surface should be covered by short grass, or where grass does not grow, the
natural earth surface. Locate sensors away from objects at least a distance
equal to four times the height of the objects, and at least 30 m (EPA) from
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