Murphy Electric Gage and Swichgage, EG21, EGS21 Specifications

Electric Gage and
Swichgage

®

Instruments

Sharper Accuracy

Higher Durability

Advanced Technology

0610119 08-06
Printed in U.S.A.

Sharper Accuracy. Higher Durability. Advanced Technology.

The EG21 Series Electric Gage and the EGS21 Series Swichgage instrument take the electric gage to new

heights with proven state of the art technology and reliability.

Electric Swichgage instrument

The EGS21 Series Swichgage instrument 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 instrument.

Specifications

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12 VDC or 24 VDC.

CCaassee::

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

BBeezzeell::

Polished 316 stainless steel standard; available in black. SAE style optional.

LLeennss::

Clear Polycarbonate and UV stabilized.

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Silicon dampened pointer.

DDiiaall::

Black with white markings; back-lite (marking becomes red when illuminated);

dual scale with mirror band to reduce parallax reading errors.

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PowerHall®Effect; outputs ground signal (sinking output) rated:
300 mA continuous (EGS21 models). 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)

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Visible on mirror band (scale);

adjustable from the back of the unit (1/16 in. hex type wrench).

WWiirriinngg::

Plug connector with wire leads, 18 AWG (1.0 mm2), 8 in. (203 mm) long.

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-40 to 185°F (-40 to +85°C).

SSttoorraaggee TTeemmppeerraattuurree::

-77 to 185°F (-60 to 85°C).

OOvveerr VVoollttaaggee ((GGaaggee MMoovveemmeenntt))::

Withstands 200% of nominal system voltage for 5 min. Meets SAE J1810.

RReevveerrsseedd PPoollaarriittyy ((GGaaggee MMoovveemmeenntt))::

Withstands reversed battery terminal polarity indefinitely within

operating temperatures.

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Meets SAE J1810 standards.

PowerHall®is a registered trademark of Allegro MicroSystems, Inc.

Dimensions

▼ EG Air Core movement design

▼ Technological improvements in lighting,

accuracy in reading and wiring installation

▼

Assurance of highest reliability and service

▼ Environmentally sealed design

▼ Exceeds the rigid SAE J1810 standard

▼ Corrosion-resistant materials.

▼ Desirable for marine and other environmentally

sensitive applications

▼ Soft, non-glare dial and pointer illumination

by “cold light” LED.

SWICHGAGE

0

PSI

kPa

25

0

®

Adjustable Contact Indicator

2-1/4 in.
(57 mm)

Reflective
Mirror Band

50

75

100

350

700

1-15/16 in. (49 mm)

1-15/16 in.

Mounting
Clamp

3/4 in. (19 mm) max. Panel Thickness.

2-1/2 in. (64 mm) clearance for adjustment / Wiring

(49 mm)

2-1/16 in. (52 mm)
Mounting hole diameter.

Push-on Plug and Wire Leads

18 AWG (1.0 mm

SWICHGAGE® Contact
Adjustment, 1/16 in. hex

2

); 8 in. long (203 mm)