China Wholesale Hall Effect Factory – LEEM-2 Construction of an Ammeter and a Voltmeter – Labor
China Wholesale Hall Effect Factory – LEEM-2 Construction of an Ammeter and a Voltmeter – Labor Detail:
Pointer type DC ammeter and voltmeter are refitted from meter head. The meter head is usually a magnetoelectric galvanometer, which only allows the current of micro ampere or milliampere level to pass through. Generally, it can only measure very small current and voltage. In practical use, it must be modified to enlarge its measuring range if it is to measure large current or voltage. The modified meter should be calibrated with standard meter and its accuracy level should be determined. This instrument provides a complete set of experimental equipment for refitting micro ammeter into milliammeter or voltmeter. The experimental content is rich, the concept is clear, stable and reliable, and the structure design is reasonable. It can be mainly used for middle school students’ physics expansion experiment or college general physics experiment and design experiment.
Functions
1. Understand the basic structure and usage of a microamp galvanometer;
2. Learn how to extend the measurement range of a galvanometer and understand the principle of constructing a multimeter;
3. Learn the calibration method of a electric meter.
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 |
Product detail pictures:

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We rely upon strategic thinking, constant modernisation in all segments, technological advances and of course upon our employees that directly participate inside our success for China Wholesale Hall Effect Factory – LEEM-2 Construction of an Ammeter and a Voltmeter – Labor , The product will supply to all over the world, such as: Montpellier, Provence, Pakistan, We have more than 200 staff including experienced managers, creative designers, sophisticated engineers and skilled workers. Through hard work of all employees for the past 20 years own company grew stronger and stronger. We always apply the "client first" principle. We also always fulfill all contracts to the point and therefore enjoy excellent reputation and trust among our customers. You are very welcome to personally visit our company.We hope to start a business partnership on the basis of mutual benefit and successful development . For more information please do no hesitate to contact us..

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