Barksdale E1H-H15 Adjustable Pressure Control Switch

The Barksdale E1H-H15 Adjustable Pressure Control Switch is a diaphragm-seal piston mechanical pressure switch in the Econ‑O‑Trol family, designed for reliable one-switching-contact operation in low-pressure monitoring. In this variant the setpoint is adjustable from 0.5 to 15 psi and the load switching rating is 125–600 VAC, enabling direct control of standard HVAC, pump, or sprinkler-related circuits. The switch uses a plastic diaphragm in its sealed chamber and offers an accuracy class of 2.0% f.s., with repeatability within ±2.0% of full scale at constant temperature. It is designed for intrinsically safe applications, and optional versions can carry approvals such as Ex ia, UL, CSA, and DNV-GL. Common applications include machine-tool and mechanical engineering systems, dosing equipment, and sprinkler monitoring where a compact, low-pressure switch is required to trigger control logic at a precise setpoint.