Now both thermistor temperature sensor measurement and 4-20mA process instrumentation are brought together with the ROI-XMA Thermistor Transmitter. Industry standard 2 lead PTC or NTC thermistors, such as the widely available 10k ohm at 25 deg C, can be converted to industry standard 2 wire 4-20mA loop powered signal format to work with with a wide variety of PLC's, process meters, and other instrumentation.