ANALOG AMMETER

Indotech Analog Ammeter. An Analog Ammeter is a measuring instrument used to measure the current in a circuit. Analog ammeter, also known as current meters, are metered instruments that measure current flow in amperes. Current levels are displayed on a dial, usually with a moving pointer or needle made of a soft iron. They are required to measure the current in a circuit and are therefore connected in series with the components carrying the current. High current flow may indicate a short circuit, unintentional ground, or defective component. Low current flow may indicate high resistance or poor current flow within the circuit. If the ammeter resistance is not significantly smaller than the load resistance, the load current can be substantially altered by the inclusion of the ammeter in the circuit.

“INDOTECH” Analog Ammeter have been found indispensable by Laboratories and Industrial Houses. All the components used in the manufacture of the instruments are selective and are designed to ensure long term accuracy and service. All parts/sub-assemblies are throughout inspected and gauged at all stages with utmost care by experts. analog dc ammeter, analog ammeter, dc analog ammeter, analog anneter

CONSTRUCTION :

The movements are strongly constructed incorporating synthetic sapphire jewel bearings, hard chrome plated highly polished pivots and phosphor-bronze cadmium copper hair springs. Moving coil meters are fitted with high flux density magnets resulting in linear scale. All these meters have zero adjuster accessible from the front.

TYPE OF METERS : ANALOG AMMETER

MOVING IRON TYPE METERS :

These are meant for measuring AC quantities. However, DC quantities could also be measured but with slightly low accuracy. These are available in 900 movement.

MOVING COIL TYPE METERS :

Moving Coil instruments are meant for the measurement of DC voltages and currents. All the meters are fitted with high flux density magnets resulting in linear scale. These are available in both 900 & 2400 movements.

MOVING COIL RECTIFIER TYPE METERS :

Rectifier type instruments are meant for the measurement of AC voltage and currents. These are moving coil instruments fitted with full wave rectifiers to measure AC quantities. These are available in both 900 & 2400 movements.

SPECIFICATION : ANALOG AMMETER

Analog ammeters can measure levels of alternating current (AC) and direct current (DC). Some devices that measure AC current also measure root mean square (RMS) power, which is the square root of the time average of the square of the instantaneous power. Many analog ammeter include a current sensor built into the meter or that clamps around the wire.

Different types of analog ammeters can measure different ranges of AC current, DC current, and AC current frequency.

TESTS : Following tests are performed as per BIS 1248-03

TestResult
VIBRATION TESTThe meters are subjected to vibrations. This test ensures that if there is any loose component, it will be detected before the meter is passed.
LIFE TESTThe meter is subjected from zero to full scale and the counter meter records the number of operations.
OVER LOAD TESTThe meter is over loaded 120% of its rated capacity for 2 hours.
HIGH VOLTAGE BREAKDOWN TESTThe meter should withstand 2kV, AC, if applied between electrical circuit and any metallic point of the meter for 1 minute.
INSULATION RESISTANCE TESTBIS1248-03 specifies that the insulation resistance should be above 5 mega ohms. The test is performed accordingly.
ACCURACY TESTThe accuracy test is performed as per BIS 1248-03.The error is calculated on the basis of full scale deflection of the meter.
null

Product Design and Planning

null

Component Sourcing and Procurement

null

Testing and Quality Control

null

Final Assembly and Integration