Dwyer Instruments A3010 Photohelic Differential Pressure Switch

The Dwyer Instruments A3010 Photohelic Differential Pressure Switch is a DWYER Series A3000/A3010 assembly that combines a differential pressure switch with an integrated gauge, delivering a 25 PSIG full-scale gauge reading. As part of the Photohelic family, this model integrates sensing, indication, and switching in a single unit, enabling users to monitor differential pressure while receiving an electrical switch signal at a defined setpoint. The compact, single-package design simplifies installation by providing both real-time pressure indication and automatic control or alarm capability without additional instrumentation. Within the Series A3000/A3010 line, the A3010 designation identifies this particular configuration for differential pressure sensing and switching with an integrated gauge. Typical uses include processes or systems where monitoring is needed and a switch is required to actuate equipment, alarms, or controllers when the differential pressure reaches the setpoint. With its built-in gauge, technicians can visually confirm the differential pressure, while the switch output provides a controllable signal for alarms or interlocks.