First time I used my continuity tester, the bulb went bad. What happened?

Most likely they were testing a live circuit. Continuity testers are designed to test UNENERGIZED circuits. The bulbs in these testers are only rated for around 3 volts. If you hook this up to a live circuit in your house, you just put 120 volts through the bulb and that is why it blew out.

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Do we offer a meter that will give a voltage reading through non-contact like a current reading?

No, we currently only have non-contact voltage testers, not voltage meters. Any voltage reading would require having the test leads from the meter touching the circuit. Clamping the meter around a conductor with the meter on a voltage setting will not give any reading.

Continuity Measurement.

Any multimeter with the ability to test resistance or ohms can measure for continuity. Some meters have an audible buzzer to let you know when you have continuity, while others don’t. You need to keep an eye on the display to watch the reading the tester is giving. Most analog testers you have to watch the screen to see if the needle goes all the way to the right. With the digital meters, some have an audible symbol to let you know if the meter has an audible buzzer or not.

This is the audible continuity buzzer. In most cases, if the reading is under 50 ohms of resistance, the meter will buzz. With other testers, you would just select any of the resistance ranges () and watch the reading you get on the screen. It should be as close to 0.00 as possible to have the best continuity. Most times you will get something between 0.00 and 0.3 on the display because the meter is picking up resistance in the circuit being tested and in the test leads.

WARNING!!! ALWAYS TEST CONTINUITY ON A CIRCUIT THAT IS SHUT OFF. A live circuit will damage the tester and potentially injure the user.

The Hold Function

On many of our Sperry meters there is a hold button that will freeze the screen, holding the information of the last reading you took. When this option is in use, there is a small letter “H” displayed on the screen. This allows you to write down the reading without having to hold the test leads in place.

If you’re having trouble taking readings and the readings on the screen do not change, look for the H. This may be your problem. In other cases it’s due to a low battery, which causes the meter to give faulty readings.

The “Hold” button!

On many of our Sperry meters there is a hold button that will freeze the screen, holding the information of the last reading you took. When this option is in use, there is a small letter “H” displayed on the screen. This allows you to write down the reading without having to hold the test leads in place.

If you’re having trouble taking readings and the readings on the screen do not change, look for the H. This may be your problem. In other cases it’s due to a low battery, which causes the meter to give faulty readings.