The CWS220A is a wireless version of our SI-111 infrared radiometer.
It contains an internal 922-MHz spread spectrum radio that transmits
data to a CWB100A Wireless Base Station or to another wireless
sensor. The frequency of the CWS220A's internal radio is commonly used
in Australia and New Zealand.
A wireless sensor can route its transmissions through up to three
other wireless sensors. A datalogger is connected to the CWB100A
base station for processing and storing the CWS220A's data.
The CWS220A provides a non-contact means of measuring the surface
temperature of an object or surface by sensing the infrared radiation
given off by the subject. It is comprised of a thermopile, which
measures surface temperature, and a thermistor, which measures sensor
body temperature. The two temperature probes are housed in a rugged
aluminum body that contains a germanium window.