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Moving Coil Multi Range Meter
Description
For DC & AC current and voltage. The operation of these meters depend on the reaction of the current circulating in the moving coil and a field of a fixed permanent magnet. Considering the operational nature and design of these instruments. the scale is linear. Since, the direction of the movement rotation depends on the direction of the current flow (polarity) in the circuit. The moving coil multirange meter can be used on direct current circuit and also alternating current with a suitable rectifier inserted in the circuit.| Accuracy | DC + F.S.D. & AC + 2.5 F.S.D. |
| Scale Length | 60 mm approx. with knife edge pointer and anti parallel mirror scale. |
| Dial Size | 80x80 mm, rectangular. |
| Moving Coil Multirange Voltmeter has following ranges | DC & AC 0-5 - 25 - 50 - 100 - 250 - 500V |
| Moving Coil Multirange Ammeter has following ranges | DC & AC 10 mA - 100mA - 500 mA - 1A - 2.5A - 5A |
Ballistic Galvano Meters
Description
Used for measurement of small quantities of electrical charge. Levelling Screws for balancing the coil. Coil with mirror suspended between long suspension at the upper end and a spring at lower end. Clamping arrangement for transportation. Consistent sensitivity over a large period. Strip provided for making it a periodic. Res. in Ohm Crit. Damp. Res. in Ohms Sensitivity mm per m Coul. Sensitivity mm per m Amp. Time period in Seconds.| 100 | 300 | 1000 | 12 | 2000 |
| 500 | 600 | 1400 | 12 | 3500 |
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