How to make a multimeter
To learn how to measure resistance or amperes with the multimeter, keep reading!
Multimeters are rated at different CAT levels so you can quickly discover if it is safe for the range youll be using.4 Hz stands for Hertz, the unit for measuring the frequency of AC circuits.Many functions have multiple ranges, so it's important to have both set correctly, otherwise serious damage to the meter or harm to the operator may result.In any case, always use the higher range measurement protected by the higher fuse rating and be careful.If youre considering a fluke and frequently work in areas where your personal safety may be of concern, youll definitely want to consider adding this device to your arsenal.It's very important that the probes not touch anything other wehkamp kortingscode vergeten than the device being tested.If the switch is part of a circuit that can turn a light on in multiple locations it is a single pole double throw, with three wires or double pole double throw with four wires.Anyone who hasnt had a tool drop from a bag on a ladder or some other mishap involving misplacing or mishandling something is either magnificently careful or just hasnt been in the field long enough for it to happen to them.Insert the red probe into the other straight slot.Such batteries are sometimes known as transistor radio batteries, or by the type numbers PP3, MN1604, 6LR61 or 6LF22.For example, if there are three lines between "50" and 70 these represent 55, 60, and 65, even if the gaps between them look different sizes.In measuring 110VAC or 240VAC, your range selector should be at 250 VAC.Even if the operating current is low and within the range of the meter fuse, the surge can be many times higher than the operating current, because the empty filter capacitors are almost like a short circuit.
If not set correctly, the user would mistakenly believe there was no voltage present, which could be a dangerous mistake.
Unless you have an auto-ranging multimeter, each of the basic modes (voltage, resistance, and current) has several settings to choose from.
Youll still need to make sure that the voltage range of your chosen meter is appropriate for what youre working with in order to get an accurate reading for diagnosis and testing purposes.Most multimeters have three ports or holes.When multimeter measures resistance in ohms, it can not measure continuity because resistance and continuity are opposites.Set the DVM to its 2000 k (2,000,000 Ohm or 2 MOhm) range.Start with 10 amps, then if the reading is less than 1 amp, move it down to 1 amp and try again, moving down to the next setting as you.Set the range (if provided) to R x 100.Sadly, the manufacturers often fit larger (1A or 3A) fuses in new meters because they are cheaper, but 250 mA is the correct rating.Despite its simplicity the 830B is very useful - it will measure voltages (both AC and DC resistance, and DC current.If you attempt to recharge non-rechargeable alkaline batteries you may find that they leak corrosive caustic potash, explode, or catch fire.You can add even more to either practical functionality or expanding your meters uses with the correct multimeter accessories.Cars, motor-cycles and boats, and uninterruptible power supplies, use lead-acid rechargeable batteries.
The most commonly used of these add-ons will probably be your leads.