GD-250, single channel controllers interface with industry standard two or three wire 4-20 mA sensor or other standard voltage / current sensor transmitters and provide the user with concentration display and two independent adjustable alarm levels. The 3½ digit LED or Alphanumeric LCD display can read the concentration. LEDs on the front panel provide an indication of all three alarms.
The alarm relays can be programmed to be either latching or non-latching and to activate either as a rising or falling alarm. The relays are SPDT Form C type rated at 5 Amps to provide direct alarm action, reducing the need for interposing relays. Local alarm devices can be connected to the configurable onboard alarms. The Fail-safe supervisory provides a reliable indication that the monitor is fully operational. The ‘Failsafe’ design monitors the input power and status of the power supply for the amplifiers. A failure of any one of these functions illuminates a ‘Fault’ LED. ENDEE offers 10 different sensor technologies, command of each of these technologies enables us to “Fit the Product to the Application”, and assure long-term service, reliability & optimal performance in every application.