Refrigerant Sensor – Sensitron Smart 3-R

Overview of the Refrigerant Sensor:

The SMART3-R (with LED indication) gas detectors Refrigerant Sensor are ideal for non-classified areas. They employ high quality catalytic, MOS sensors, electrochemical cells or infrared sensors, that grant an excellent linearity and accuracy, besides an estimated lifetime of four years for detectors with infrared or pellistors sensors and two years for electrochemical cell sensors. The SMART3-R gas detectors provide a proportional 4-20mA output signal. By employing optional boards, they can either communicate on a serial bus RS 485 or provide relay outputs. In details, the available outputs are as follows:

• 4-20 mA. Proportional 4-20mA output current corresponding to the full range (LEL or ppm).

• Relay. By adding the STS3REL board, the unit is provided with 3 relays with voltage free changeover contacts. One relay is dedicated to the Fault and Watch-dog, while the remaining two relays can be associated to two out of the three available alarm thresholds.

• Serial RS485. By adding the STS.IDI interface, the detector can communicate on RS485 bus with MULTISCAN+ + gas control panels.