Single Channel Controller in 1/8 DIN

The Single Channel Controllers interface with industry standard two- or three- wire 4-20 mA sensor transmitters such as the Sierra Monitor Analog Gas Sensor Modules. These controllers provide the user with concentration display, two independent adjustable alarm relays and a fault relay. In addition, the output can be continuously sent to a chart recorder.

The Model 4011 is in a 1/8 DIN panel mount enclosure. The controller is DC powered and is shipped with a plug-in 110VAC power supply.

The front panel includes a 3 1/2 digit LCD display, LEDs indicating the three alarms, reset pushbutton, and LEDs indicating the display selection (concentration, alarm 1, alarm 2 or loop signal), The reset button is used to reset the relays when the user has selected the Latching or Acknowledge mode.