Relative humidity sensor
20 - 100 % RH | EMD series GE Measurement & Control

First, there was the EMD-2000 sensor, known for its tight accuracy and strong resistance to chemicals. The EMD-2000 which offers not only high accuracy but also improved hysteresis and a compact size. Both sensors are bulk polymer RH sensors that change resistance as the relative humidity changes. Now, the EMD-4000 is capable of withstanding environments where organic vapors are present. It recovers from condensing environments and may be used at temperatures up to 185°F (85°C)
EMD Relative Humidity Sensors are ideal for humidity measurement applications that require a high degree of accuracy without calibration. The EMD-2000 sensor includes an HDPE filter cover that protects the sensor during handling and helps keep contaminants from affecting performance.

The EMD-4000 is capable of insitu measurement of soluble water in organic liquids such as transformer oil, gasoline, toluene, acetone, and other compounds of varying hydrogen bond strengths. The EMD-4000 is highly repeatable and interchangeable.