Model 2620 single channel digital control modules are designed to supervise and display the status of a single integral or remote (2620 R) sensor assembly. Model 2620 is housed in a NEMA AX wall mount enclosure or Ex- proof enclosure.
Model 2620R 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 3 J4 digit LCD or Alphanumeric LCD display can read the concentration. LEDs on the front panel provide 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 failing 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 on board alarms. The Fail Safe Supervisory provides a reliable indication that the Monitor is fully operational. I he “hail Safe” 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” Light Emitting Diode.