Gas detector alarm controller SNE808

- Advanced microprocessor and communication technology, stable and reliable, high accuracy - Relay output and 4~20mA or RS485 signal output - Auto switch for main and backup power, backup power is charged automatically - Blocks modular construction, IO module can be expanded arbitrarily, single machine can access 54sets detectors ,the concentration value and position of the detector can be displayed - Two segments of audible and visual alarm, the alarm value is adjustable - With history records inquiry function(storage space more than 2G) - High versatility, ready for 4～20mA current signal or voltage signal - Auto alarm for detector failure, line failure or under voltage - Easy for installation and operation, good man-machine interface technical specification INPUT SIGNAL - 4~20mA or RS485 signal MEASUREMENT RANGE - according to the measurement range of the gas detector, each detector can be set separately ACCURACY - ±3% F.S. RESPONSE TIME - ≤5S DISPLAY TYPE - LCD /LED to display the concentration ,LCD to display the position of the detector, LED lights to indicate the working statu ALARM TYPE - Two segments audio and visual alarm, loudness≥90dB ALARM SETTING - Alarm limits are adjustable OUTPUT POWER SUPPLY - 24-28VDC for each channel OUTPUT SIGNAL - Two levels of dry contacts, with capacity 1A 24VDC RS 485 interface CONNECTION WITH DETECTOR - Three wires OPERATION POWER SUPPLY - 220VAC 50Hz BACKUP POWER SUPPLY - 24VDC rechargeable battery POWER CONSUMPTION - ≤2W/each channel OPERATION TEMPERATURE - -20℃～+60℃ OPERATION HUMIDITY - 0～95%RH/Non condensation MOUNTING TYPE - wall mounting, cabinet installation