HVAC Controls, Pneumatic • EP, IP, PE Switches and Transducers
Electropneumatic Transducer EP-311/313
Models Description
The EP-311/313 incorporates a quiet low-wattage poppet valve and pressure sensor to measure and adjust the branch line pressure proportional to the input. This unit has no air consumption and is immune to mounting orientation or supply line pressure fluctuations. The EP-313 incorporates a manual override switch and, in the manual mode, the pressure can be increased or decreased with two push-button switches. This feature is most desirable for check out/commissioning and manual operation in case of controller failure.
Features • No air consumption
• 100% solid-state piezoresistive silicon pressure sensor • High air flow capacity • Universal 24 VAC/VDC supply voltage
• Field selectable 4 to 20 mA, 0 to 5 VDC or 0 to 10 VDC input
• Short circuit and reverse polarity protected inputs and outputs
• Auto/manual switch with separate increase/decrease pushbuttons (EP-313 only)
• Precision pressure gauge for branch line indication • Non-interactive zero and span trimmers • Smallest size available in the industry