1U378 Multifunction Engine Gauge

	1U378-series Multifunction Engine Gauge This 3” instrument combines the three essential engine parameters in a compact package. Rugged D’Arsonval meter movements with two jewels are used to indicate cylinder head and oil temperatures. A brass bourdon tube mechanism precisely indicates oil pressure. A selection of fittings is available to simplify installation.
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Specifications
Options
Accessories

Physical Characteristics

1U378-003-52A front view

1U378-003-52A rear view

Height:	3.25"
Width:	3.25"
Depth:	1.82"
Weight:	0.8 lbs. (max)
Markings:	Matte white
Finish:	Flat black

Mating Connector
MS3106-14S-2S
Pin Out
Pin A:	14 / 28 VDC
Pin B:	Cylinder Temp Bulb
Pin C:	Ground
Pin D:	Oil Temp Bulb

Notes:

Color context is white per 8A015-002, black background per 8A013-001, green per 8A017-002, yellow per 8A017-001, and red per 8A017-004.
FAA TSO C43 & C47 approved.

Environmental Characteristics

Temperature:	-30° to 50° C
Vibration:
- CPS:	5 to 50
- Maximum Double Amplitude:	0.020 in.
- Maximum Acceleration:	1.5 G's
Humidity:	0% to 95% at 32° C
Altitude:	0 to 40,000 ft.

1U378 Options

Model	Functions	Oil Press Range (psi)	Oil Temp Range	Cyl Temp Range	Voltage	Lighting	Sealed
1U378-001	OP, OT, CT	0 - 120	50 - 250°F	100 - 500°F	28 V
1U378-101	OP, OT, CT	0 - 120	50 - 300°F	100 - 600°F	28 V	X
1U378-002	OP, OT, CT	0 - 8 Kg/cm²	0 - 150°C	60 - 260°C	14V
1U378-102	OP, OT, CT	0 - 120	0 - 150°C	60 - 260°C	14 V	X
1U378-003	OP, OT, CT	0 - 200	50 - 250°F	100 - 500°F	28 V
1U378-103	OP, OT, CT	0 - 200	50 - 250°F	100 - 500°F	28 V	X
1U378-004	OP, OT, CT	0 - 200	0 - 150°C	0 - 300°C	14 V
1U378-104	OP, OT, CT	0 -200	0 - 150°C	0 - 300°C	14 V	X
1U378-005	OP, OT, CT	0 - 120	50 - 300°F	100 - 600°F	28 V		X
1U378-105	OP, OT, CT	0 - 120	50 - 300°F	100 - 600°F	28V	X	X
1U378-006	OP, OT, CT	0 - 200	50 - 250°F	100 - 500°F	28 V		X
1U378-106	OP, OT, CT	0 - 200	50 - 250°F	100 - 500°F	28 V	X	X
1U378-007	OP, OT	0 - 200	50 - 250°F	---	28 V
1U378-107	OP, OT	0 - 200	50 - 250°F	---	28 V	X
1U378-008	OP, OT	0 - 200	50 - 250°F	---	14 V
1U378-108	OP, OT	0 - 200	50 - 250°F	---	14 V	X

Note:
- OP = Oil Pressure; OT = Oil Temperature; CT = Cylinder Temperature

Oil Port Fittings

Part Number	Configuration & Thread Size
AN910-1D	Internal 1/8 ANPT per MIL-P-7105
70B092-001	7/16-20 UNF-3A per MS33656, size 4
70B092-002	3/8-24 UNF-3A per MS33656, size 3
70B092-003	5/16-24 UNF-3A per MS33656, size 2