Description
Ammeter and voltmeter construction experiment kit
The LEEI-5 is listed for practical work on galvanometer-based ammeter and voltmeter construction, range extension and meter calibration. For a physics or electrical-measurement teaching laboratory, share the target experiments, required ranges and batch size. Request confirmation of the galvanometer, resistance box, reference meters, power supply and connecting accessories included with the quoted apparatus.
Laboratory equipment enquiries across Jharkhand and West Bengal
Dhanbad Sales welcomes enquiries from individual buyers, schools, colleges, universities, training centres, research and industrial laboratories, healthcare education providers, NGOs and government institutions throughout Jharkhand and West Bengal. Product suitability is assessed against your specific teaching or laboratory application.
Share your specification or syllabus, quantity, budget, delivery city and PIN code, and required timeline. Identify any setup, demonstration, calibration or documentation requirements separately. Exact specifications, included accessories, current availability, price, applicable warranty and delivery or support feasibility are confirmed in the quotation. No certification, calibration service or manufacturer authorisation is implied unless confirmed in writing.
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Explore laboratory equipment and scientific teaching apparatus
Features
- Comprehensive experiment content
- Clear physical concepts
- Stable and reliable experimental results
- Thoughtful and practical configuration
Introduction
Pointer DC ammeters and voltmeters are constructed from galvanometers. A galvanometer is typically a magneto-electric type ammeter that can only handle microampere or milliampere currents, making it suitable for measuring very small currents and voltages. To measure larger currents or voltages, the galvanometer must be modified to extend its measurement range. Once modified, the meter must be calibrated using a standard meter, and its accuracy grade should be determined.
The LEEI-5 experimental apparatus includes all the necessary components and devices for constructing a milliampere meter or voltmeter. These include a DC power supply, a magneto-electric type microamp galvanometer, a resistance box, a digital voltmeter, a digital ammeter, and more.
By conducting experiments with this apparatus, students will:
1. Understand the basic structure and operation of a microamp galvanometer.
2. Learn how to extend a galvanometer’s measurement range and grasp the principles of constructing a multimeter.
3. Master the calibration techniques for electric meters.
The instruction manual provides detailed experimental configurations, underlying principles, step-by-step instructions, and sample experiment results. For more information, please click on Experiment Theory and Contents to explore the apparatus further.
Main Specifications
| Description | Specifications |
| DC power supply | 1.5 V and 5 V |
| DC microamp galvanometer | measurement range 0 ~ 100 μA, internal resistance about 1.7 kΩ, accuracy grade 1.5 |
| Digital voltmeter | measurement range: 0 ~ 1.999 V, resolution 0.001 V |
| Digital ammeter | two measurement ranges:0 ~ 1.999 mA, resolution 0.001 mA;
0 ~ 199.9 μA, resolution 0.1 μA. |
| Resistance box | range 0 ~ 99999.9 Ω, resolution 0.1 Ω |
| Multi-turn potentiometer | 0 ~ 33 kΩ continuously adjustable |
