SE International — Meter Face Scale for Monitor 4

Replacement Meter Face Scale, mR/hr with CPM Display, for Compatible Monitor 4 Radiation Survey Meters
SKU: MTRMR

Overview

The SE International MTRMR is a replacement meter face scale designed for compatible Monitor 4 radiation survey meters. The scale provides measurement markings for mR/hr along with CPM (Counts Per Minute), allowing the instrument’s analog needle position to be interpreted in commonly used radiation-rate and count-rate units.

This replacement component is intended for maintenance, repair, refurbishment, or restoration of compatible Monitor 4 instruments where the original meter face has become damaged, faded, unreadable, or otherwise unsuitable for continued use.

The dual-scale layout supports convenient visual interpretation of both radiation exposure rate and detector count rate during routine survey and monitoring applications.

What's Included

Note: Monitor 4 survey meter, meter movement, enclosure, detector, electronics, calibration service, installation hardware, and other replacement parts are not included unless specified separately.

Box Dimensions & Shipping Weight (Estimated)

Actual shipping dimensions and weight may vary according to protective packaging.

Key Specifications

Scale Functions

The MTRMR meter face allows the Monitor 4 analog needle to be interpreted using two measurement references:

mR/hr Scale

• Displays radiation exposure rate

• Supports quick field interpretation of radiation conditions

• Useful for general survey and monitoring applications

CPM Scale

• Displays detector counts per minute

• Useful for comparative radiation measurements

• Supports contamination and general count-rate monitoring workflows

The actual instrument response and calibration depend on the detector, electronics, selected range, and calibration condition of the complete Monitor 4 meter.

Performance Features

Dual Measurement Scale
Combines mR/hr and CPM references on a single meter face.

Designed for Monitor 4 Instruments
Intended as a replacement component for compatible SE International Monitor 4 survey meters.

Clear Analog Reference
Allows the operator to interpret needle position directly against the printed measurement markings.

Repair and Refurbishment Use
Provides a replacement option when the original meter scale is worn, faded, damaged, or difficult to read.

Supports Instrument Service Life
Can help restore readability and usability without replacing the complete survey meter when only the meter face requires service.

User-Friendly Design

• Direct analog scale interpretation

• Displays both mR/hr and CPM

• Compact replacement component

• Designed for compatible Monitor 4 meter assemblies

• Useful for refurbishment and maintenance

• Helps restore instrument readability

• No external power required

• Fits into established Monitor 4 service workflows

Ideal Applications

• Monitor 4 repair

• Monitor 4 refurbishment

• Replacement of damaged meter faces

• Replacement of faded scales

• Radiation instrument maintenance

• Calibration-shop service

• NDT radiation survey meter repair

• Laboratory instrument maintenance

• Industrial radiation-monitoring equipment service

• Preventive maintenance programs

Compatibility

Intended for use with:

• Compatible SE International Monitor 4 instruments

• Analog meter assemblies configured for mR/hr and CPM indication

• Radiation survey meter repair programs

• Instrument refurbishment workflows

• Calibration and service facilities

Instrument version, meter movement, scale configuration, and physical fit should be confirmed before installation.

Installation Considerations

Installation should be performed carefully to avoid damage to the analog meter movement.

Recommended considerations include:

• Confirm compatibility with the specific Monitor 4 model

• Disconnect power before opening the instrument

• Protect the meter movement from impact or static damage

• Avoid bending the meter pointer

• Install the replacement scale in the correct orientation

• Ensure the pointer moves freely after installation

• Verify zero indication

• Reassemble the instrument securely

• Perform a functional test after replacement

• Recalibrate the instrument when required

Because meter-face replacement may involve opening the instrument, servicing should be performed by qualified personnel.

Calibration Considerations

Replacing the meter face does not automatically verify instrument accuracy.

After installation:

• Confirm needle zero

• Perform operational checks

• Verify response using an approved radiation source or calibration method

• Confirm scale alignment

• Check all measurement ranges

• Recalibrate if required by procedure

• Maintain calibration records where applicable

A properly installed meter face must still correspond to a correctly calibrated detector and analog meter movement.

Care and Handling

• Handle the meter face carefully

• Avoid scratching the printed scale

• Keep the surface clean and dry

• Do not bend or distort the component

• Avoid contact with solvents that could damage markings

• Store flat in protective packaging before installation

• Keep away from moisture and excessive heat

• Avoid fingerprints on visible scale surfaces

• Do not modify printed markings

• Replace the part if physical damage affects readability

Radiation Safety Considerations

The meter face itself does not detect or measure radiation independently. It is only one component of the complete Monitor 4 instrument.

A complete radiation survey meter should:

• Be properly assembled

• Be within calibration

• Pass operational checks

• Be used by trained personnel

• Be operated according to applicable radiation-safety procedures

A replacement scale should not be used as a substitute for instrument calibration or functional verification.

About SE International

SE International manufactures portable radiation-detection instruments, survey meters, monitoring equipment, replacement parts, and accessories for industrial, laboratory, educational, environmental, and radiation-safety applications. Its Monitor-series products are widely used for portable ionizing-radiation detection and general survey work.

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