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Digital Differential Pressure Controller – Series A4

The Series A4 digital differential pressure controller is a patent pending microprocessor based pressure controller for positive, negative, and differential pressure as well as velocity and flow. The Series A4 differential pressure controller includes (2) 8A SPDT relays and an associated programming menu that allows full configuration of variables such as setpoints, dead band, engineering units, flow coefficients, and more. The programming is done from a user friendly menu on the OLED display or uploaded using an OptioptilinkLink™ programming key. The OLED also displays the exact setpoints or other user defined variables during normal operation. Furthermore, the menu structure can be customized by moving variables to different menu levels to accommodate many applications. Compared to other mechanical products, the Series A4 digital differential pressure controller has a significantly reduced depth, an improved look, and better performance at a similar price.

Maximum Pressure: 4″ w.c. and less = 2 PSI; 5″ w.c. and above = 10 PSI

Media compatibility: Air and compatible non combustible, non corrosive gasses

Accuracy: Axxx0-xx – 1.00%; Axxx1-xx – 0.50%; Axxx2-xx – 0.25%

Temperature Ranges: Compensated and Operating: 10° to 140°F (-12° to 60°C)

Thermal Effect*: +/- 0.02% FS/°F

Output Signal: 4-20 mA (option)

Loop Resistance: 750 Ω Max (for internally sourced power); 1800 Ω Max (for externally sourced power of 36 VDC)

Power Supply: Universal 24-240 VAC or VDC

Housing Material: Glass Filled Nylon

Enclosure Rating: Designed to meet NEMA 4X face; with optional cover the entire product is weatherproof

Relays: (2) SPDT 8 Amps @ 250 VAC, 5A @30 VDC

Electrical Connections: screw terminals

Response Time: <100 ms

Display: 4 Digit, red LED, ½” digits; LCD programming display

Process Connection: Push on connection for 3/16″ tubing

Agency Approvals: ETL, CE

* Custom calibration including improved accuracy and thermal effect are available.

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