EG SERIES Electric Gage and SWICHGAGE®

Leading edge SELECTRONIC® technology

The EG21 Series Electric Gage and the EGS21 Series SWICHGAGE® take the electric gage to new heights with proven state of the art technology and reliability. Utilizing our proven EG Air Core movement design, the EG21 Series offers technological improvements in overall operation, lighting, accuracy in reading, wiring and installation. The EG21 Series give you assurance of highest reliability and service.

These rugged gages are environmentally sealed and exceed the rigid SAE J1810 standard for reliable operation under tough off-road and power unit environments. Corrosion-resistant materials are used throughout, making the EG21 highly desirable for marine and other environmentally sensitive applications. Soft, non-glare dial and pointer illumination is provided by a “cold light” LED and when powered the white lettering and clear pointer become soft red. Mirror band eliminates parallax reading error when the pointer and its reflection are aligned.

The EGS21 Series SWICHGAGE® has all of the features of the EG21 Series Gage plus an adjustable set point PowerHall® Effect switch output for operating alarms or equipment shutdown. The trip point is adjustable over 90% of the scale and has a set point indicator visible from the gage face. Now you can have both, the ease of electric gage installation and the reliable switching of Murphy’s famous SWICHGAGE®.



Power Input: For Gage, SWICHGAGE® and Sender: 12 VDC; 24 or 32 VDC when specified (see below for 32 VDC limitations).


Case: Polyester (PBT), impact and weather resistant; with convenient screw-on mounting clamp.

Bezel: Polished 316 stainless steel bezel is supplied as standard; Available in black. SAE style optional.

Lens: Clear Polycarbonate and UV stabilized.

Air Core Movement: Silicon dampened pointer.

Dial: Black background and white markings; behind dial lighting (white marking becomes red when illuminated); dual scale with mirror band to reduce parallax reading errors.

SWICHGAGE® Sensor: PowerHall® Effect; outputs ground signal (sinking output) rated: 300 mA continuous (EGS21 Series only). Pressure, Fuel, Volts set on decreasing scale. Temperature and Amps set on increasing scale.Output saturation voltage (voltage drop across switch): 1.3-2.3 Volts @ 25°C (May require some conditioning to work with logic inputs)

SWICHGAGE® Set Point Indicator: Visible on mirror band (scale); adjustable from the back of the unit (1/16 in. hex type wrench).

Wiring: Plug connector with wire leads, 18 AWG (1.0 mm2) x 8 in. (203 mm.) length.

Operating Temperature: -40 to 185°F (-40 to +85°C).
Storage Temperature: -77 to 185°F (-60 to 85°C).

Over Voltage (Gage Movement): Withstands a voltage of 200% of nominal system voltage for 5 minutes. (Meets SAE J1810 standards).

Reversed Polarity (Gage Movement): Withstands reversed battery terminal polarity indefinitely within operating temperatures.

Environment and Test: Meets SAE J1810 standards.