Model: 7770C

Engine Pressure Ratio Indicator

Special Features:

Indicator type tape scale; weight 5.0 lbs; filling medium 100% helium; filling tube 1.750 inches long; scale consists of 4 vertical tapes with tape drive stops; each tape includes a power off warning; lighting per mil-l-27160; indicator case finished in durable dull black per fed-std-595 color 37038

Properties:

Width

1.750 inches

Center To Center Distance Between Mounting Facilities Parallel To Length

1.438 inches

Center To Center Distance Between Mounting Facilities Parallel To Width

6.000 inches

Mounting Hole Diameter

0.170 inches

Current Type

Ac Voltage Rating

115.0 volts

Frequency Rating

400.0 hertz

Depth

9.625 inches

Contact Quantity

End Application

C-141 aircraft

Contact Type

Mounting Arrangement Style

Four hole/stud rectangular/square

Scale Range

+1.0/+2.2 engine pressure ratio all indicators all scales

Electrical Connection Quantity

Electrical Connection Identifying Number

Ms27034-h-167-24p

Pointer Type

Indicating single pointer

Illumination Color Generation Method

Integral light

Mounting Facility Type And Quantity

4 threaded hole

Features Provided

Hermetically sealed case

Part Name Assigned By Controlling Agency

Indicator, pressure ratio egk-7/a24j-13

Phase

Single

Height

6.312 inches

Color

White marker

Supplementary Features

Designed to receive single synchro output signals from pressure transmitter type trk-55/a24j-13

NSN

6620-00-905-8530

Part Number

7770C

Description

Indicator,ratio,engine Pressure

CAGE

35351

An instrument designed to reflect one of the testing parameters for conducting engine performance and functional testing in an operating engine system. Its dial is graduated in units of pressure ratio, and is used to indicate the percent of differential pressure ratio of exhaust gas pressure to intake (engine inlet) pressure for gas turbine or jet propulsion engines.

Part 7770C NSN 6620-00-905-8530

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

32992

FIIG:

A533Y0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

12.5 X 12.5 X 18.5

Paclk Weight:

10.2000lbs

Item Weight:

2.0000lbs

Item Dim:

009000180063

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

F000002XA5

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

061700

UFC:

34580

LTL:

RATING VARIABLE

LCL:

77.5

WCC:

658

TCC:

SHC:

ACC:

Equipment for Aircraft

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Phone:	+1 470-231-0824
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Schedule B and Export

Schedule B: 9031808080
SITC: 87425
End Use: Measuring, testing, control instruments
NAICS: 334515
USDA: 1

Freight Class: Other measuring or checking instruments, appliances and machines, nesoi in chapter 90