Model: 25R

Null Meter

Special Features:

Ruggedized; weapon system essential

Properties:

Circuit Current For Which Designed

Dielectric Withstanding Voltage In Volts

3000.0

Overall Length

2.850 inches

Mounting Hole Diameter

Between 0.143 inches and 0.157 inches

Scale Division Quantity

18 single indicator single range

Overall Diameter

3.510 inches

Environmental Protection

Cold resistant and heat resistant and shock resistant and submersible and vibration resistant and watertight

Mounting Bolt Circle Diameter

3.160 inches

Furnished Items And Quantity

Washer 7; nut 7

Indicator Type

Dial w/pointer

Installation Design

Panel

Mounting Arrangement Style

Three hole/stud bolt circle

Sensitivity Rating

1.0 milliamperes

Dial Scale Marking Color

Black single indicator single range

Accuracy In Percent

-2.0/+2.0 at full scale single indicator single range

Meter Depth Behind Mounting Flange

1.660 inches

Meter Body Diameter Behind Mounting Flange

2.800 inches

Movement Type

Moving coil, permanent magnet

Background Color

White single indicator single range

Pointer Color

Black single indicator single range

Scale Marking

Red band along entire range exc 1.9 mm green sec at zero ctr ref; ccw l of ctr; arrow at ctr; cw right of ctr

Mounting Facility Type And Quantity

1 flange and 3 screw and 3 unthreaded hole

Scale Graduation Type

Linear single indicator single range

Features Provided

Luminous scale marking and magnetic shield and zero adjuster

Criticality Code Justification

Feat

Movement Suspension Method

Jewel pivot base

Circuit Attachment Method And Quantity

2 solder lug and 2 threaded stud

Material

Stainless steel

Surface Treatment

Enamel semigloss

Special Test Features

Conforms to mil-m-10304/12, type mr36w1u1dcmar

Style Designator

Round flush mtg

Fsc Application Data

Test set, elect. Equip.

NSN

6625-00-885-4146

Part Number

25R

Description

Meter,null

CAGE

55026

An electrically operated instrument having a zero point on its scale (usually located in the center thereof). It may not indicate units of electrical measurement. The value may be expressed by means of a pointer and calibrated dial or a digital readout display. When the indication shows zero, an electrical value of "zero" has been reached in the circuit. It is generally used in situations in which zero is the desired effect. Excludes ammeter, galvanometer; meter, arbitary scale; and voltmeter.

Part 25R NSN 6625-00-885-4146

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

61382

FIIG:

A310A0

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:

Paclk Weight:

0.7000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

136740

UFC:

68820

LTL:

RATING VARIABLE

LCL:

WCC:

657

TCC:

SHC:

ACC:

Instruments/Radio

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Schedule B and Export

Schedule B: 9030908030
SITC: 87479
End Use: Measuring, testing, control instruments
NAICS: 334515
USDA: 1

Freight Class: Parts and accessories of articles of schedule b subheading 9030.39