Analog Moving Coil Instrument MR66

The analog moving coil instrument MR66 is a laboratory meter used for indicating one compatible electrical quantity through the movement of a pointer over a calibrated scale. It is intended for students, teachers, technicians and equipment builders who need a continuously visible response on circuit trainers, demonstration panels and supervised electrical experiments.

Product Description

The STEMAids Analog Moving Coil Instrument MR66 uses a moving-coil indication principle. In a conventional permanent-magnet moving-coil mechanism, current through the coil produces torque that moves the pointer. A control spring provides opposing torque, allowing pointer position to represent the applied electrical input within the calibrated range.

MR66 is a model or pattern designation, not a complete specification. The instrument may be configured as an ammeter, voltmeter, galvanometer or another DC indicator. Its exact function, range, sensitivity, accuracy, scale markings, internal resistance and mounting arrangement must be confirmed before publication or installation.

Browse related physics laboratory measuring instruments and compatible electrical and electronics equipment.

Key Features

• Single-parameter capacity: indicates one confirmed electrical quantity at a time.
• Moving-coil response: converts an electrical input into visible pointer displacement.
• Analog scale: shows gradual changes and fluctuations continuously.
• MR66 format: identifies the instrument model or housing pattern, subject to confirmed dimensions.
• Scale-reading practice: develops skills in interpolation, range selection and parallax control.
• Panel integration: may suit compatible experiment boards and electrical trainers.
• Reusable laboratory component: supports demonstrations and supervised practical sessions.

Technical Specifications

What’s Included in the Kit

• Analog Moving Coil Instrument MR66
• Integrated pointer, movement and calibrated scale
• Electrical connection terminals
• Panel-mounting hardware
• External shunt, multiplier or rectifier
• Connection diagram and operating instructions

Applications / Uses

• Indicating current or voltage on compatible laboratory trainers
• Detecting gradual changes in electrical input
• Teaching moving-coil instrument operation
• Practising analog scale reading and zero checking
• Integrating into demonstration and power-supply panels
• Supporting school, college and vocational practicals

The instrument can support trainers across the wider physics laboratory equipment range.

How to Use the Analog Moving Coil Instrument MR66

1. Confirm the measured quantity, range and approved current type.
2. Check the pointer zero before connecting the instrument.
3. Switch off and isolate the circuit.
4. Mount the instrument in the approved orientation.
5. Connect its terminals according to the supplied wiring diagram.
6. Install any specified shunt, multiplier or rectifying accessory.
7. Energise the circuit and read the pointer against the correct scale.
8. Switch off the circuit before changing any connection.

Safety note: Do not infer wiring from the dial alone. Observe polarity where required, and never exceed the confirmed current, voltage, insulation or overload rating.

Care & Maintenance

• Clean the scale window with a soft, dry cloth.
• Protect the movement from shock, vibration and overload.
• Inspect terminals and mounting hardware periodically.
• Store unused instruments in a dry, dust-free environment.

Why Choose STEMAids

STEMAids is the education brand of Eduscope Smart Learning Solutions Private Limited, a New Delhi-based manufacturer. Its catalogue includes measuring instruments, physics apparatus, electrical trainers and educational models. The company supports institutional procurement, tenders and export orders. Buyers can review the complete STEMAids educational equipment catalogue when planning laboratory installations.

Frequently Asked Questions

What is an analog moving coil instrument MR66 used for?

It is used to indicate one compatible electrical quantity through the movement of a pointer over a calibrated scale.

What does MR66 mean?

MR66 is a model or format designation. It does not independently specify the measured quantity, range or accuracy.

Is the MR66 an ammeter or voltmeter?

Either configuration may be possible. The scale, internal movement and associated circuitry determine its actual function.

Can a moving-coil instrument measure AC?

A conventional moving-coil movement responds directly to DC. AC measurement generally requires an appropriate rectifier or conversion circuit, which must be verified.

Does it require an external shunt or multiplier?

Some current ranges require a shunt, while some voltage ranges require a multiplier resistance. The approved range determines the requirement.

Is it suitable for school laboratories?

Yes, when installed on a protected instructional panel and operated within its confirmed electrical ratings under supervision.