Relative Humidity – Sensors
RH Sensor : EMD Series
General Eastern purchased Phys-Chem Scientific Corp. for their high quality resistive sensor. Now General Eastern manufactures those same high quality sensors in their own facility. First, there was the EMD-2000 sensor, known for its tight accuracy and strong resistance to chemicals. The EMD-2000 is joined by the EMD-3000, 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 vapours are present. It recovers from condensing environments and may be used at temperatures up to 185°F (85°C)
ChipCap Temperature and Humidity Sensors
The ChipCap series humidity sensor offers a new standard in the field of accurate relative humidity measurement. Based on a capacitive polymer sensing technology, this device offers signal conditioning and temperature compensation for a single SoC (System-on-Chip) solution. The device is very simple to use, fully tested and calibrated for accuracy on delivery—no further calibration is needed.
ChipCap can be incorporated into an assembly or finished sensor to meet customer specifications. The measurement is accurate to ± 2% from 20% to 80%RH and ± 3% across the entire humidity range. Long term stability is excellent. The temperature accuracy is ± 1°C from 0°C to +70°C. Dual outputs provide humidity and temperature as 0V to 1V, or 0.5V to 4.5V ratiometric or available with digital output (the ZACwire one-wire interface).