083E Relative Humidity Sensor

The 083E Relative Humidity Sensor is a highly sensitive and stable temperature measurement tool that provides outstanding accuracy. It is reliable in the full range of relative humidity condi- tions, from 0-100%, performing equally well in meteorological, industrial, laboratory and other demanding settings.This model is also available with a mounted temperature sensor, and can be used with a variety of radiation shields.

Operation

The 083E Relative Humidity Sensor measures variance in the capacitance change of a one- micron thick dielectric polymer layer.This film absorbs water molecules through a metal electrode, and causes capacitance change propor- tional to relative humidity. The thin polymer layer reacts very quickly, providing up to 90% of the final value of relative humidity in fewer than five seconds. The sensor’s response is essentially linear, with small hysteresis, and negligible temperature dependence.

Construction

  • The sensor is mounted on a small probe, which measures, records and displays humidity levels
  • Because the sensor measures only ambient humidity, in most settings temperature compensation is unnecessary
  • The probe body is water tight and made from corrosion resistant aluminum
  • Immersion of the sensor element in water does not adversely affect the calibration

Features

  • All solid state construction, digital electronics
  • Fast response of less than 5 seconds to 90% of final value
  • Low power consumption of 4 mA at 12 VDC
  • Easily cleaned using distilled water
  • 0-1V output for 0-100% RH
  • Will operate from a 12 VDC battery

Specifications

Operating Characteristics

Power
Input Power: 4 mA at 12 VDC (10-14 VDC)
Relative Humidity
Sensing Element: Thin film polymer capacitor
Range: 0 – 100% relative humidity
Temperature Operation Range: -50°C to +50°C (-58°F to 122°F)
Response Time: 10 sec. with 2 m/s aspiration
Temperature Coefficient: 0.04% RH/°C
Accuracy: ±2.0% from 0 – 100% humidity
Output: 0 to 1 VDC – Standard (0 to 5.0 VDC Optional)
Temperature
Temperature Sensor: Themistor (precision multi-element)
Temperature Operation Range: -50°C to +50°C (-58°F to 122°F)
Accuracy: ±.10°C (0.18°C)
Output: Resistive
Physical Characteristics
Weight: 2.5 oz (70.9 g)
Dimensions: .75 in (19.05 mm) diameter
7.5 in (190.5 mm) length
Ordering Information
Temperature sensor not included -50°C to +50°C, (-58°F to +122°F)
Temperature sensor included Accuracy ±0.1°C (±0.18°F)
With connector for direct use with Model 073B Radiation Shield or
Model 5980 Radiation Shield
PN 2348 Cable Assembly – Specify length in feet or meters
With 6” Signal Cable for direct use with
Model 076B Motor Aspirated Radiation Shield

Specifications are subject to change at any time