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The A20 Series (2 inch/51 mm dial) and the A25 Series (2-1/2 inch/64 mm dial) Swichgage models are diaphragm-actuated, temperature-indicating gages, with built-in electrical switches for tripping alarms and/ or shutdown devices. Ranges are available from 32°-120° F (0°-45° C) through 300°-440° F (160°-220° C).
Swichgage® instruments are built in the USA and have protected engines and equipment in applications such as oil and gas, marine, irrigation, construction and trucking applications to monitor engine coolant, crankcase oil, transmission oil and others for more than 80 years.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information about California Propsition 65, go to www.P65Warnings.ca.gov or visit our California Proposition 65 page.Additional product documentation can be found on our product support website or by clicking the Help Center button.
| Part Number | Description | Notes |
|---|---|---|
| 05702176 | A20 Series Clamp Lite Assembly; 12V | Illumination — Order Separately |
| 05702177 | A20 Series Clamp Lite Assembly; 24V | Illumination — Order Separately |
These rugged, built-to-last instruments are face sealed from the environment by the unique combination of a polycarbonate case and lens, a polished stainless steel bezel and O-ring seals. Ranges above 30 psi (207 kPa) [2 bar] are sealed from the external environment (except PE Series). Ranges of 30 psi and lower have a small weep hole in the bottom of the case. 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.
A20P and A25P Series Swichgage
The gage pointer makes with an adjustable limit contact to complete a pilot duty circuit. Contacts have self-cleaning motion to ensure electrical continuity.
A20PE (was A20EO) and A25PE (was A25EO) Swichgage
Features internal snap-acting SPDT switches, instead of the single pole/pointer contacts, for three wire control and can be wired to make or to break a circuit. When the switch closes on falling pressure, it becomes set, as pressure rises the switch resets (refer to wiring diagram).
A20PABS and A25PABS Swichgage instrument
Same as A20P and A25P with internal SPDT snapswitch for pre-alarm
A20PG and A25PG MurphyGage instrument
Gauge-only model without switch contact(s).
