How to check continuity with cen tech digital multimeter

How to check continuity with cen tech digital multimeter. Although Cen-Tech makes a variety of digital multimeters, there are no special instructions for each one. The seven functions pertain to this model’s purpose of testing diodes, transistors, and batteries and measuring AC and DC voltage, current, and resistance.

How to check continuity with cen tech digital multimeter

The instructions for usage on all Cen-Tech multimeters are the same. It simplifies the process so that each new model isn’t overly complicated.

One multimeter from Cen-Tech includes the same functionality and navigation for checking AC and DC voltages and testing batteries and transistors effectively. Cen-Tech offers a tutorial on operating a digital multimeter and its functionalities.

Prerequisite tasks

On the multimeter, look for the direct dial. It’s worth noting that it offers a variety of features and a range that you may utilize when working on a circuit. The three ports labeled COM is located on the bottom left side. It comes with a pair of lead test probes, one black and the other red, to distinguish them because they each have their port.

If you’re using a clamp type, check the digital clamp meter instructions if you’re unsure. The LED display is turned on and off using the toggle button on the left side. The multi-pin transistor is also visible.

Check continuity with cen tech digital multimeter

The reading must not be hampered by electrical noise. For resistance measurement, the circuit emits minimal current. Make sure the meter reads 0 first, then verify the voltage function. Because the device produces a tiny current when measuring resistance, there should be no additional current source.

  • Make sure the meter reads 0 by using the voltage function on the circuit.
  • The red lead should be inserted into the VA jack, while the black lead should be inserted into the COM connector.
  • Activate the multimeter. Touch the leads together before measuring to ensure the meter reads 0, indicating no resistance between the leads.
  • Note the reading by touching the leads to the exposed circuit wires. If the task is 1, counterclockwise, place it on the dial and try again. Continue turning the dial until you receive a number that isn’t 1.
  • You can use the resistance function to check for continuity. Measure the circuit as though it were a resistance test.
  • The circuit is open if the reading is 1. Adjust the dial to 200k ohms to test the circuit’s continuity in the same way as the resistance is measured.
  • If the display reads 1, it’s an open circuit. Other than 1, indicates a closed circuit.

Why cen tech digital multimeter

An open line is detected with the letters OL, if the second probe detects no current. This feature is essential for evaluating continuity.

You may also use it to test a diode by measuring resistance in one direction throughout the device, then switching the probes and measuring resistance in the opposite direction. You should obtain minimal resistance in one way and near-endless opposition in the other if the diode is suitable.


The multimeter is just a digitalized AVOmeter. A multimeter may be used to check for circuit continuity and, depending on the type, to determine capacitance. The multimeter’s built-in power source is enabled when choosing the resistance scale.

It delivers a bit of current from one probe to the other, and the higher the resistance, the smaller the current measured by the further probe. Hence multimeter is ideal for checking continuity with cen tech.

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