Spot Galvanometer
Product Specification Sheet
Spot Galvanometer
Model Number: MT-E501A
The Spot Galvanometer is a high-sensitivity optical null detector designed for precision electrical measurements in Wheatstone bridges, potentiometers, and laboratory experiments. Manufactured by Micro Technologies, it provides accurate current detection, adjustable sensitivity, and reliable performance for educational, research, and industrial laboratories.
Product Specification
The Spot Galvanometer is a precision optical measuring instrument developed for detecting extremely small electrical currents with high sensitivity and accuracy. Manufactured by Micro Technologies, it is widely used as a DC null detector in Wheatstone bridge circuits, potentiometers, resistance measurements, and precision electrical experiments.
The instrument incorporates an integrated lamp and scale arrangement, producing a bright light spot on a calibrated scale for accurate observation of minute current variations. This optical indication method offers excellent sensitivity while eliminating mechanical pointer friction.
The Spot Galvanometer can operate directly from 220V AC, 50Hz mains supply using its built-in power system. It also includes provision for operation from a 6V external battery, making the instrument suitable for both laboratory and portable applications.
A built-in 6V, 0.3 Amp light source produces a sharp and bright light spot that is projected onto the scale. The optical system ensures clear visibility of deflections, allowing precise null-point detection during bridge balancing and measurement procedures.
The moving system consists of a lightweight suspended coil mounted in a taut-band suspension within a uniform magnetic field. This construction provides high sensitivity, low friction, and excellent stability for accurate electrical measurements.
The instrument features a 150 mm long scale with a central zero marking, enabling measurement of deflections on both sides of the null position. A front-mounted zero adjustment knob allows precise alignment of the light spot before beginning measurements.
Sensitivity is adjustable using a 2-pole, 6-position selector switch, offering multiple sensitivity ranges to suit different experimental requirements. This enables users to optimize the instrument for high-precision current detection under varying laboratory conditions.
The Spot Galvanometer has an approximate time period of 2 seconds, providing quick response while maintaining stable readings.
Available models include:
- MT-E501A – 100 Ohms Resistance
- MT-E501B – 600 Ohms Resistance
The instrument is extensively used in engineering colleges, universities, physics laboratories, electrical engineering laboratories, calibration laboratories, research institutes, scientific laboratories, and technical training centers.
Every Spot Galvanometer manufactured by Micro Technologies undergoes comprehensive quality inspection and calibration to ensure dependable performance, excellent sensitivity, and long operational life.
Features
- High-sensitivity spot galvanometer
- Optical null detection
- Built-in lamp and scale arrangement
- Bright 6V, 0.3A light source
- 150 mm center-zero scale
- Precision taut-band suspension
- Lightweight moving coil
- Uniform magnetic field system
- Zero adjustment control
- 2-pole, 6-position sensitivity selector
- Multiple sensitivity ranges
- Operates on 220V AC mains
- External 6V battery operation
- Quick response time
- Stable laboratory performance
- Long operational life
Benefits
- Detects extremely small currents
- Accurate null-point indication
- Excellent bridge balancing
- Easy sensitivity adjustment
- Clear optical indication
- High measurement precision
- Reliable laboratory performance
- Durable construction
- Suitable for research applications
- Easy operation
- Low maintenance
- Long service life
Product Specifications
| Specification | Details |
|---|---|
| Product Name | Spot Galvanometer |
| Instrument Type | Optical Null Detector |
| Light Source | 6V, 0.3A Lamp |
| Scale Length | 150 mm |
| Scale Type | Center Zero |
| Power Supply | 220V AC, 50Hz / 6V Battery |
| Sensitivity Control | 2-Pole, 6-Position Switch |
| Time Period | Approximately 2 Seconds |
| Zero Adjustment | Front Control Knob |
| Suspension | Taut-Band Moving Coil |
Available Models
| Model | Galvanometer Resistance | Critical Damping Resistance | Sensitivity |
|---|---|---|---|
| MT-E501A | 100 Ω | 1000 Ω | 0.04–0.05 µA/mm Deflection |
| MT-E501B | 600 Ω | 7000 Ω | 0.04 µA/mm Deflection |
Applications
- Wheatstone Bridge Experiments
- Potentiometer Experiments
- Precision Current Measurement
- Physics Laboratories
- Electrical Engineering Laboratories
- Engineering Colleges
- Universities
- Calibration Laboratories
- Scientific Research Institutes
- Educational Demonstrations
- Instrumentation Laboratories
- Technical Training Centers
Optional Accessories
- External 6V Battery
- Power Supply Unit
- Connecting Leads
- Resistance Box
- Rheostat
- Protective Carrying Case
- Replacement Lamp
- User Instruction Manual
SKU System
MT-SG-001
FAQs
What is a Spot Galvanometer used for?
A Spot Galvanometer is used as a highly sensitive DC null detector for Wheatstone bridges, potentiometers, resistance measurements, and precision electrical experiments.
How does the Spot Galvanometer display readings?
The instrument uses an optical lamp and scale arrangement that projects a bright light spot onto a calibrated center-zero scale.
What power supply options are available?
The instrument can operate using:
- 220V AC, 50Hz mains supply
- 6V external battery
How is sensitivity adjusted?
Sensitivity is controlled using a 2-pole, 6-position selector switch, allowing users to choose the appropriate measurement range.
What is the response time of the instrument?
The Spot Galvanometer has an approximate time period of 2 seconds, providing fast and stable measurements.
Which resistance models are available?
The Spot Galvanometer is available in:
- MT-E501A – 100 Ohms
- MT-E501B – 600 Ohms
Where can the Spot Galvanometer be used?
It is suitable for engineering colleges, universities, research laboratories, calibration laboratories, physics laboratories, electrical laboratories, and scientific research institutions.
Can the Spot Galvanometer be supplied in bulk?
Yes. Micro Technologies supplies Spot Galvanometers for educational institutions, government laboratories, OEM projects, distributors, industrial organizations, and bulk procurement.
Why Choose Our Products
- High-sensitivity optical measurement
- Precision laboratory instrument
- Stable and reliable performance
- Excellent null detection accuracy
- Durable laboratory construction
- OEM and institutional supply available
- Competitive B2B pricing
- Strict quality inspection
- Technical support
- Excellent after-sales service
- Long operational life
- Trusted laboratory equipment manufacturer
Call to Action
Achieve precise electrical measurements with the Spot Galvanometer from Micro Technologies. Contact us today for pricing, institutional procurement, OEM manufacturing, government tenders, distributor opportunities, and bulk order quotations.
