Smart3 nc ip65 dioxido carbono s2401co2

The smart 3nc 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 sentox idi and multiscan++ gas control panels