Control System

Single Channel Controller

Sierra Monitor’s 4001/4011 controllers are single channel gas detection controllers that can be used with most industry standard two- or three-wire 4-20 mA or other standard voltage/current sensor transmitters. Both controllers provide the user with concentration displays, two independent adjustable alarm levels, and a fault relay.

The 4001 controller is housed in a NEMA 4X wall mount enclosure, with the option of a NEMA 7 explosion proof enclosure. The 4001 comes with an integral battery charger that can provide a trickle charge to an optional battery to provide reliable, continuous service. The LCD display on the controller shows the gas concentration or alarm setpoints.

The Sentry IT 32 Channel Controller is approved and certified by a variety of third party agencies, including UL, SIL 2, FM, ATEX, and CE. These approvals and certifications assure our customers that we carry only the highest quality of products and performance.

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