GE General Eastern E4-1111H-GE Dew Point Transmitter

Chilled mirror technology for precision humidity measurement in metrology and standards labs .

Features

  • Utilizes the time proven single stage 1111H chilled mirror sensor
  • Sensor fully recovers from condensation
  • Direct primary dew point measurement. NIST traceable.
  • Provides linear 4 to 20 mA signal
  • RS232 interface
  • Equipped with patented PACER self-cleaning and optical balancing system
  • Sensor wetted components are inert. Optional platinum mirror for more aggressive environments.
  • High accuracy: ±0.36°F (±0.2°C) dew/frost point
  • No long-term drift
  • Equipped with membrane filter
  • Mirror is easily accessible for manual cleaning

The GE General Eastern E4-1111H-GE dew point transmitter was derived from time proven chilled mirror technology, which is widely used for precision humidity measurement in metrology and standards labs worldwide.

The configuration of these dew point transmitters was developed to measure and control water vapor injection into the intake of gas and liquid fueled power turbines; however, the design is applicable to many applications where accurate and repeatable humidity measurement is required. This technology was chosen because power turbines require the precise metering of water vapor injection into the combustion chamber to reduce pollutant emissions. Water vapor is also added to the intake of the turbine to increase the mass flow which in turn increases electrical power output. The E4-111H-GE dew point transmitter is a laboratory grade chilled mirror hygrometer, designed to meet the requirements of industrial applications.

This dew point transmitter is suitable for operation in a wide range of environmental conditions including outdoor air. The sensor fully recovers from condensation and exhibits negligible long-term drift. The electronic components used are of the highest industrial quality. Each transmitter is calibrated to NIST traceable reference standards, and the E4-1111H-GE is suitable for use as a dew point transfer standard.

Applications for the GE General Eastern E4-1111H-GE Dew Point Transmitter

  • Gas and liquid fueled power turbines
  • Environmental test chambers
  • Pharmaceutical validation chambers
  • Precision HVAC monitoring and control
  • Outdoor air for building enthalpy control and cooling tower efficiency calculations
  • Engine test cells and emissions testing
  • Heat exchanger and refrigerant coil calorimetry
  • Weather telemetry