Resistance transmitter DT9502

The DT 9502 Intrinsically Safe Resistance Thermometer / Transmitter enable process temperature to be displayed in even the most hazardous plant areas (zone 1, zone 2). The Pt100 temperature sensor can be connected to the input of the instrument either with 3 or 4 wire. The DT9502 is 4-20 mA loop powered two wire transmitters, the current range can be assigned to any temperature range. Both of the instruments have two optically isolated transistor outputs for limit signalling or for simple control purposes. The DT9502 is housed in a DIN standard 144 × 72 mm ABS case with IP 65 protection from the front and IP 30 protection from the back side, for installation on the control panel. Large 4 1/2 digit, 20.5 mm height liquid crystal display make process temperature easily visible at a distance. Easy on-site configuration through the front panel membrane keypad is a major advantage of the microcontroller-based technology. The configuration parameters: output scaling, 3 / 4 wire mode, signal filtering, display refresh rate, limit modes, limit values, etc. are stored in EEPROM. The DT9500 able to calculate with three sensor calibration points to fit the real sensor curve to the instrument. A two level password protects the settings from unauthorised changes.