Gas Detection The Basic and Basic gas detection units areused for monitoring and warning of hazardousgas concentrations. They can be used fordetecting commonly used refrigerants. The Basic and Basic gas detection units are intended to be connected to a central system like Gas Detection Controller Unit, or a PLC, by either Analog or RS485 open Modbus communications. The central system converts the alarm signal from the Basic unit to activation of alarm devices. The gas detection units come with a factorydefault, 2-step alarm set-up ready for use. Theintegrated software enables the user toconfigure two individual alarm ranges. Alarm 1,a pre-alarm indicating the gas level has passeda predefined treshold 1, and – if the gas levelpasses predefined treshold 2 – the final alarm 2. Features and benefits Digital, factory configured and pre-calibrated gas detectors for plug-and-play installation (no adjustment required) Easy configuration via intuitive user-interface; helps simplify operator handling and minimize risk of operational, settings and calibration errors Flexible connection - by either Analog or RS485 open Modbus communications Fieldbus wiring - connect and power up to 96 sensors, wire length max. 900 meter per segment; expansion modules permits additional segments Automatic self-diagnostics to ensure correct communication and operation Sensor seal cap to prevent premature exposure during installation Digital user interface ensures higher sensor accuracy Reduced risk of false alarms due to temperature compensated sensors Password protected alarm settings allowing authorized access only LED status signals and alarms Buzzer & Light option for local audio and visual alarms (Basic ) On-board acknowledge button to reset alarms and to verify the that no gas leaks are present Service alerts on unit, controller or both, readable via service tool Display Quick and precise calibration procedures - either by Plug & Play replacement sensors or calibration with gas. No potentiometers or multi-meters required For improved safety and to optimize the lifetime of the sensor, degenerated sensors with too low sensitivity (<30%) are rejected during calibration process Conformity to EN 50271, EN 61010-1, ANSI/UL 61010 1, CAN/CSA-C22.2 No. 61010-1 Enables regulatory compliance with EN 378:2016, ISO 5149:2014, IIAR 2-2017, and ASHRAE 15:2016
