The principle and use of the clamp ammeter:
A clamp meter is a meter that measures the amount of current flowing on an electrical circuit that can measure current under uninterrupted power.
1. Structure and principle The clamp meter consists essentially of a current transformer, a clamp wrench and a rectifying magnetoelectric system with a reaction force meter.
2. Method of use (1) Mechanical zero adjustment before measurement (2) Select the appropriate range, first select large, then select small range or look at the nameplate value estimate.
(3) When the minimum range measurement is used and the reading is not obvious, the wire to be tested can be wound a few turns, and the number of turns should be based on the number of turns in the center of the jaw. Then the reading = indication value × range / full deviation × åŒThe number (4) should be measured so that the wire under test is in the center of the jaws and the jaws are closed tightly to reduce the error.
(5) After the measurement is completed, the transfer switch should be placed at the most range.
3. Precautions (1) The voltage of the line under test should be lower than the rated voltage of the meter.
(2) When measuring the current of the high-voltage line, wear insulated gloves, wear insulated shoes, and stand on the insulating mat.
(3) The jaws should be closed tightly and cannot be charged for the range.
Rules for the use of ordinary ammeters:
1 The ammeter should be connected in series in the circuit (otherwise short circuit.);
2 current should be from the "+" terminal and from the "-" terminal (otherwise the pointer is reversed.);
3 The measured current should not exceed the range of the ammeter (you can use the test method to see if the range is exceeded).
4 It is absolutely not allowed to connect the ammeter to the two poles of the power supply without using the electric appliance (the current resistance inside the ammeter is very small, equivalent to one wire. If the ammeter is connected to the two poles of the power supply, the pointer is snoring and the burnt is heavy. Ammeter, power supply, wire.).
Ammeter reading:
1. See the range
2. Look at the division value (generally, the range 0~3A is 0.1A, 0~0.6A is 0.02A)
3. See the needle position (must see from the front)
-- Preparation before use:
1. Zero calibration, adjust the zero button with a flat screwdriver.
2. Select the range {estimate or use trial method}
A clamp meter is a meter that measures the amount of current flowing on an electrical circuit that can measure current under uninterrupted power.
1. Structure and principle The clamp meter consists essentially of a current transformer, a clamp wrench and a rectifying magnetoelectric system with a reaction force meter.
2. Method of use (1) Mechanical zero adjustment before measurement (2) Select the appropriate range, first select large, then select small range or look at the nameplate value estimate.
(3) When the minimum range measurement is used and the reading is not obvious, the wire to be tested can be wound a few turns, and the number of turns should be based on the number of turns in the center of the jaw. Then the reading = indication value × range / full deviation × åŒThe number (4) should be measured so that the wire under test is in the center of the jaws and the jaws are closed tightly to reduce the error.
(5) After the measurement is completed, the transfer switch should be placed at the most range.
3. Precautions (1) The voltage of the line under test should be lower than the rated voltage of the meter.
(2) When measuring the current of the high-voltage line, wear insulated gloves, wear insulated shoes, and stand on the insulating mat.
(3) The jaws should be closed tightly and cannot be charged for the range.
Rules for the use of ordinary ammeters:
1 The ammeter should be connected in series in the circuit (otherwise short circuit.);
2 current should be from the "+" terminal and from the "-" terminal (otherwise the pointer is reversed.);
3 The measured current should not exceed the range of the ammeter (you can use the test method to see if the range is exceeded).
4 It is absolutely not allowed to connect the ammeter to the two poles of the power supply without using the electric appliance (the current resistance inside the ammeter is very small, equivalent to one wire. If the ammeter is connected to the two poles of the power supply, the pointer is snoring and the burnt is heavy. Ammeter, power supply, wire.).
Ammeter reading:
1. See the range
2. Look at the division value (generally, the range 0~3A is 0.1A, 0~0.6A is 0.02A)
3. See the needle position (must see from the front)
-- Preparation before use:
1. Zero calibration, adjust the zero button with a flat screwdriver.
2. Select the range {estimate or use trial method}
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