Manual for cen-tech digital multimeter. CEN

Manual for cen-tech digital multimeter Rating: 8,6/10 1922 reviews

Harbor Freight CenTech P37772 aka Mastech M9508 Teardown

manual for cen-tech digital multimeter

You'll notice three jack inputs arranged in a vertical line on the bottom right. Before you take a measurement, touch the leads together and make sure the meter reads 0, indicating there is no resistance between the leads. This digital multimeter has a display capacity of 1999 and also features a data hold button to retain information. Measuring Resistance Turn off the power to the device for which resistance is being measured. The cathode has a dot or ring marking on the diode. Turn the dial to the diode section, which is at the 6 o'clock position next to the lowest setting in the ohm section. The meter comes with a pair of leads, one black and one red, that fit into these jacks.

Next

How to Use a Cen

manual for cen-tech digital multimeter

The most interesting thing to me is their internal resistance. That being said, I didn't bother testing much more due to how unsafe it is in general. Not surprisingly, in general the meter looks very cheaply made. Also, note that crazy long battery cable, it goes right by the unfused 20A connector. Maybe if we removed the crap rubber sleeve. Well let's take a look at the back.

Next

11 Function Digital Multimeter with Audible Continuity

manual for cen-tech digital multimeter

Sure the Uni-T test leads are longer but not near enough to double the internal resistance. Note the main selector wheel on the front of the multimeter. While checking them out I noticed some writing on the wire. So I decided to take a closer look. .

Next

Cen

manual for cen-tech digital multimeter

Please try our search function first. Yet hey they used brass inserts. Use the probe ends of the leads. It is the Cen-Tech P37772, which is really a rebranded Mastech M9508. We also can clearly see the Mastech Logo and M9508 model number printed on the circuit boards. Keep turning the dial — all the way to 2000k if necessary — until you get a reading other than 1. Nope still a beast, just an even cheaper feeling beast.

Next

Manual

manual for cen-tech digital multimeter

To me this actually isn't a bad idea, the rubber should provide a good amount of friction to keep the meter from sliding everywhere when you change ranges. Why you wouldn't use self tappers and instead use that money to provide a second fuse is beyond me. Measuring Resistance and Continuity When you measure resistance, the unit supplies a small current, so there must be no other current source. Do not test 6V or 12V vehicle batteries with this function. I don't want to spoil the fun so I will post images and typing commentary as I go. If you still can't find the manual for your product, use our free on Facebook. Touch each probe to the item for which resistance is being measured.

Next

Cen

manual for cen-tech digital multimeter

If you know how to use the inexpensive 98025 seven-function model, you can use all the others. You can use the multimeter to test the voltage drop across a diode so you can compare it to the diode's specifications and determine whether it's still good. Touch each probe to the item for which voltage is being measured. The display should indicate a resistance of 0 ohms. Take the reading by touching the leads to the exposed circuit wires. I'm not kidding when I say the rubber case makes up at least a third of the weight of the meter. Chris Deziel holds a Bachelor's degree in physics and a Master's degree in Humanities, He has taught science, math and English at the university level, both in his native Canada and in Japan.

Next

5 Ways to Use a Digital Multimeter

manual for cen-tech digital multimeter

The rest is a big piece of crap. Touch the red lead to the positive terminal of the battery and the black lead to the negative terminal and note the reading. If the reading is 1, turn the dial one position counterclockwise and try again. Being bored today and trying to recover from last night I decided to test some resistors and caps to see how it compares to the Uni-T 61E. Repair Café offers free repairs, done by expert volunteers. Turn on the multimeter and move the selector to the 200 position in the ohm Ω area. It likely also applies to its bigger brother, the 7 Function Digital Multimeter With Backlight, Item 92020.

Next

5 Ways to Use a Digital Multimeter

manual for cen-tech digital multimeter

At best I'll have a beater meter; at worst I'll have something to post on here for us to ridicule. At least there is a bit of humor in the warning label. Couldn't find the manual that you were looking for? With a commitment to quality and a lifetime guarantee on all hand tools, Harbor Freight Tools is a favorite of automotive and truck repair shops, government agencies, schools, manufacturers, contractors and tool enthusiasts who want top-quality and great selection and value. Let's take a quick look at those jacks the incorrect colors of the jacks is my fault, it was originally correct Oh damn! It's just weird the choices they made. Most of the soldering appears reasonably clean with no botch jobs.

Next

Digital Multimeter Manual

manual for cen-tech digital multimeter

Harbor Freight Tools stocks over 7,000 items in categories including automotive, air and power tools, shop equipment and hand tools. Later while looking at the wires I saw 2000V and started laughing. Check the circuit with the voltage function to make sure the meter reads 0. They just say their maximum rated voltages. Accessories Included 9V battery, two 36 in. Obtain the type of transistor and pin out from online reference material. For information on licensing, contact the.

Next

Manual

manual for cen-tech digital multimeter

Nice cheap mounts for holding the probes. Originally recorded March 22, 2014. Turn on the meter and take another reading. Turn the range selector knob to the diode position. Note the lack of a stand, how do you view the screen when the meter is sitting on a table? As for how does this meter meet its specs. Heck, even the leads say Mastech on them.


Next