Pressure gauge 20P series

wateroilstainless steel

The 20P Series (2 inch/51 mm dial) and the 25P Series (2-1/2 inch/64 mm dial) Swichgage models are diaphragm-actuated, pressure-indicating gages with built-in electrical switches. These switches are used for tripping alarms and/or shutdown devices. Ranges are available from 0-15 psi (103 kPa) [1.0 bar] through 0-100 psi (690 kPa) [7.0 bar]. The gage mechanism is enclosed in a steel case coated to resist corrosion. A polycarbonate, break-resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument. Accuracy and protection from moderate overpressure is assured by a unique, unitized diaphragm chamber. A built-in pulsation dampener helps eliminate pointer flutter and is removable for cleaning. For models 20P and 25P, the gage pointer acts as a pressure indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contacts are grounded through the case and have self-cleaning motion to ensure electrical continuity. Model 20PE has internal snap-acting SPDT switches. Gage-only models, without the switches (Murphygage®) are also available. Base Models 20P and 25P Series Swichgage The gage pointer makes with an adjustable contact to complete a pilot-duty circuit. 20PE Swichgage 20PE (was 20EO) Features internal snap-acting SPDT switches, instead of the single pole/pointer contacts. When the switch closes on falling pressure, it becomes set, as pressure rises the switch resets. 20P7 Lockout Swichgage Same as 20P Series. They also include a front, semi-automatic lockout for startup override. This built-in device holds the pointer away from the contact on startup.