#Fluke digital multimeters how to#

Below are steps on how to make voltage measurements: Testing for proper supply voltage is usually the first step when troubleshooting a circuit. Resolution is the smallest change in measured value to which the instrument will respond.ДЄs the range increases, the resolution decreases.В For maximum resolution, choose the lowest possible range. Scale: If scale or range is 1000V, an accuracy of 1% is equal to +/- 10V. percentage of scale or range (analog meters): Percentage of reading (digital multi-meters) vs. вЂ“ 4000 count display reads from 0-3999 вЂ“ 3200 count display reads from 0-3199Д¬loseness with which an instrument reading approaches the true value being measured or largest allowable error. вЂ“ Left most digit вЂ“ 1 вЂњhalfвЂќ digit (can read less than 9). вЂ“ starting from the least significant digit (right most), 3 вЂњfullвЂќ digits from 0-9

#Fluke digital multimeters full#

The front panel of most of the DMM contains basic symbols and indications, below is full detail of the symbols and components which are of most concern for any user or electricians.Дisplay is specified as Digits or as CountД®xample: 3 1/2: (read as three and half digit DMM)

Understanding the Front Panel of Digital Multimeter Some of the multimeter have illuminated displays for better viewing in low light situations. The display usually has four digits and the ability to display a negative sign as well. Also, shock absorption is provided by the rubber pads closely attached at the top and bottom of the LCD. A transparent plastic casing is over the LCD protecting it from the scratches. The LCD is embedded on the PCB and is interfaced through pin-outs on the PCB itself.

The selection knob allows the user to set the multimeter to read different things such as milliamps (mA) of current, voltage (V) and resistance (О©). Some multimeter employ the rotary switch to handle the switching ON and OFF options while some require a slider switch. This port allows the measurement of current (up to 200mA), voltage (V), and resistance (О©). mAVО© is the port that the red probe is conventionally plugged in to. COM stands for common and is almost always connected to Ground or вЂ-вЂ™ of a circuit.ДЎ0A is the special port used when measuring large currents (greater than 200mA). display, selection knob and ports.В Two probes are plugged into two of the ports on the front of the unit. Parts of Digital MultimeterДЄ multimeter has three major parts i.e. As the name suggests, multimeter are those measuring instruments or electrical devices which can be used to calculate multiple circuit characteristics. It gives digital output, which is very accurate as compared to analogue meters. On the other hand for any electrician as well it is basic device which he must understand and use properly. Multimeter is most common & important laboratory measuring instrument.