The PT-104 is a 4-channel, temperature data acquisition module for use with Pt100 and Pt1000 RTD sensors. This high-resolution unit measures temperature, resistance and voltage with no power supply required. The CE-compliant unit uses RS-232 or USB interface with Windows software for data acquisition and display. This product is designed for chemical, water and food industries and applications involving HVAC and lab use. The system uses reference resistors instead of voltage references to improve accuracy. It achieves its 0.001°C resolution with an advanced ADC that can resolve to better than 1 part in 16 million.