The Rosemount 3490 Series of wall and panel mounted control units provide comprehensive control functionality for any 4-20 mA or HART® compatible transmitter. A back-lit display gives clear visual indication of the measured value and status of all inputs and outputs. The 3490 provides an intrinsically safe 24V dc power supply to the transmitter. Five relays are provided and are fully field programmable to perform a wide variety of control, fault indication or alarm duties.

• Tough weatherproof wall mount enclosure for internal or external mounting
• Accepts any 4-20 mA or HART compatible input
• Five field adjustable control relays
• Bright local display of measured value
• Pre-programmed with tank shapes, flow algorithms and pump control routines to simplify configuration