EE181

Air Temperature and Relative Humidity Sensor
EE181

EE181

OrderableConfigurable

Air Temperature and Relative Humidity Sensor

Best for high-humidity environments.

Pricing

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Model:
EE181
Item Number:
44235
Warranty:
1 year

Overview

The EE181 is a rugged, accurate air temperature and relative humidity (RH) probe that is ideal for long-term, unattended applications. It includes a proprietary coating on the RH element that increases the life of the element and protects it from dirt, dust, salt, or other contaminants. A 1000 Ω PRT measures air temperature for the -40° to +60°C range. For optimum results, the EE181 should be recalibrated annually.

This featured product was part of the Aconcagua expedition to install a weather station on South America’s tallest peak. Learn more about the expedition on our Extreme Application Series: Aconcagua page.

Key Advantages

Accurate, Rugged
Ideal for long-term, unattended applications

Benefits

  • Well-suited for long-term, unattended applications
  • Accurate, rugged, reliable
  • Outstanding long-term stability
  • Wide operating temperature range
  • User cleanable
  • Compact and easily interchangeable
  • Low power consumption
  • Compatible with most Campbell Scientific dataloggers

Specifications

Measurement Description
Temperature, relative humidity
Signal Type/Output
Analog voltage
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
Field Replaceable Chip or Recalibrate
Recalibrate
Operating Temperature Range
-40° to +60°C
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

Sensing Element
1000 Ω Platinum Resistance Thermometer (PRT)
Measurement 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

Sensing Element
Capacitance
Measurement Range
0 to 100% RH

(non-condensing)

Output Signal Range
0 to 1 Vdc
Temperature Dependence
Typically 0.03% RH/°C
Accuracy
-NOTE- Accuracy specifications include hysteresis, non-linearity, and repeatability.
Accuracy
±(1.3 + 0.003 • RH reading) % RH

(at -15° to +40°C, 0 to 90% RH)

Accuracy
± 2.3% RH

(at -15° to +40°C, 90 to 100% RH)

Accuracy
± (1.4 + 0.01 • RH reading) % RH

(at -25° to +60°C)

Accuracy
± (1.5 + 0.015 • RH reading) % RH

(at -40° to +60°C)

Related Resources

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