Analog Multi Tester for Voltage/Current/Resistance Measurement

Dimension

Q1: What is an analog multimeter?
A1: An analog multimeter is a type of electrical measuring instrument that displays readings via a moving needle over a graduated scale. It is used to measure various electrical parameters such as voltage, current, and resistance in circuits, and it operates on the principle of a moving coil galvanometer.

Compared to digital multimeters, analog multimeters are valued for their ability to show continuous variations in readings, making them particularly useful for observing fluctuations in measurements. However, they are generally considered less accurate and harder to read due to the parallax error and the need for manual range selection.

Q2: How do I zero the analog multimeter for resistance measurements?
A2: To zero an analog multimeter for resistance measurements, first set the multimeter to the lowest resistance range. Touch the two probes together to create a short circuit. Adjust the zero-ohm calibration dial, usually located near the dial or on the side of the meter, until the needle points to zero on the resistance scale. This ensures accurate readings by accounting for any internal resistance in the probes and meter.

Q3: What should I do if the needle doesn't move when taking a measurement?
A3: If the needle doesn't move, check the following:

• Connections: Ensure the probes are securely connected to the multimeter and making good contact with the test points.
• Range Setting: Verify that the range setting is appropriate for the expected measurement. If the range is too high, the needle might not deflect enough to be noticeable.
• Multimeter Functionality: Test the multimeter with a known voltage or resistance to confirm it is functioning correctly. If it still doesn’t move, the meter or the probes may be faulty and need repair or replacement.

Tips: How to calibrate an analog multimeter?

• Turn Off and Zero Adjustment: Turn off the multimeter and set the pointer to zero using the adjustment knob.
  Select the Measurement Type: Choose the type of measurement (voltage, current, or resistance) you want to calibrate.
• Connect to a Known Source: Connect the multimeter to a known, accurate source (like a calibrated voltage or current source).
• Adjust for Accuracy: Use the calibration screws on the multimeter to adjust the reading to match the known source value.
• Check Across Ranges: Repeat the calibration process for different ranges to ensure accuracy across the entire scale.
  Final Check: Verify the calibration by measuring a few known values to ensure the multimeter is reading correctly.

Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

What is covered?

SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

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• Expendable parts.
• Routine cleaning or normal cosmetic and mechanical wear.
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• Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.