Gage / Switches - Dial

7 products

For durable, mechanical performance, our Dial Gage-Switches offer classic analog measurement paired with dependable switching. Featuring rugged dial readouts and reliable mechanical triggers, these instruments are ideal for harsh environments where simplicity and resilience matter most. They provide trusted operation for industrial processes, field use, and legacy systems where mechanical solutions are preferred. Explore our collection of dial gage-switches to add long-lasting, no-nonsense measurement and control to your setup with proven reliability.

Frequently Asked Questions

A dial gage switch combines a local visual pressure indicator with an integrated electrical switch. It allows operators to read the current system pressure on the dial while simultaneously setting specific high or low pressure points that will trigger an alarm, start a pump, or shut down a process when reached.

While a transmitter sends a continuous electronic signal (like 4-20mA) to a control system, a gage switch provides a physical "make or break" contact at a predetermined threshold. It is often used as a mechanical fail-safe or a local controller for simpler "on/off" automation tasks.

The Photohelic® series featured in this collection is renowned for its use of pressure-sensing diaphragms combined with versatile double-pole double-throw (DPDT) relays. These units are highly reliable for monitoring air and compatible gases, offering adjustable setpoints and excellent repeatability in HVAC and industrial filtration systems.

Yes, many dial gage switches are available with weatherproof or explosion-proof housings. This makes them suitable for monitoring gas pipelines, chemical processing plants, and outdoor tank farms where equipment must withstand environmental exposure and prevent the ignition of flammable gases.

Most dial gage switches feature externally adjustable setpoint knobs or internal screws, allowing technicians to fine-tune the trigger points without disconnecting the device from the pressure line. This flexibility is ideal for systems where operational parameters frequently change.

Over time, the mechanical linkage and internal springs can lose tension, leading to inaccurate dial readings or "switch drift" (where the switch triggers at the wrong pressure). HK Calibrations provides professional calibration to ensure both the visual gauge and the electrical trip-points remain accurate and safe for operation.