Types of Voltmeter



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Analog voltmeters

As mentioned in the previous paragraph Methods voltmeter, analog voltmeter are rotating device rotating frame Baazafh a resistance in series with the coil (frame) used as a voltmeter. In fact voltmeter using A small frame (coil) placed in a strong magnetic field, measure the voltage. This frame rotates and compresses a small spring frame rotation angle of the initial position proportional flow through the frame (and thus the voltage across voltmeter) is sensitive in terms of voltmeters «ohms per volt» expression. For example, a voltmeter with a sensitivity of 1000 ohms at 1 mA current state can be sensitive to voltage. If the maximum value measurable by a special voltmeter 200 V Bashd.mqavmt voltmeter can be 200, 000 ohms at 1 mA, in which case the frame deviates from its original condition. In most voltmeters Andagyry voltage range can be changed it by changing the internal resistance V m will be possible. Voltmeter is an instrument used to measure potential difference between two points of the circuit used. And to measure the voltage of the AC (AC) and DC (direct) used and pre-installed voltmeter should mode Multimetere according to the type of applied voltage (which is often used on power supply The circuit is defined) then it can be determined. Installation voltmeter in parallel circuit and should be noted that the measurement should be larger range (measuring mode with higher voltage) should be initiated. Not to damage the voltmeter. First direct voltage start DC.V. As you know, this episode has six measurement basis is from 0.25 V to 1000 V DC can not fathom. Here's how it works almost as important is that if we 10V selector on our devices can show up to 10 volts. This classification numbers on the page number is part of three class can see. Left and mA circuit with DC.V specified. If you wish to have a battery or a direct current power supply device test positive wire to the positive power supply and the negative wire to the negative power supply devices connect. If, for example, six-volt battery you should set the selector to the number 10. A few tips: 2) To use a digital multimeter to measure voltage, while observing the above (1 choice and 2Mvazy connect the DC and AC voltmeter) connected to a voltmeter enough oats in place COM and V installed. In case of displacement of the two wire voltmeter only negative number, but in terms of the absolute value of the difference does not worry.

Digital voltmeter

Measuring devices for digital measurement screen genotypes (Display) show usually measured quantity units such as volts, amps, mA, ° C, etc. to the appropriate display. Including measuring devices such as voltmeters, watt meters, Cosφ meter, frequency meter, Dvrshmarha, thermometer and Vvmtr noted Nmvd. Measuring devices for digital measurement screen genotypes (Display) show usually measured quantity units such as volts, amps, mA, ° C, etc. to the appropriate display. Including measuring devices such as voltmeters, watt meters, Cosφ meter, frequency meter, Dvrshmarha, thermometer and Vvmtr noted Nmvd. Vvmtr part of a digital voltmeter DC. It Vvmtr like scorpions (analog) is, as you know, is the main part of the galvanometer Darsvnval. Digital DC voltmeter on a comparable basis. The voltage applied to the voltmeter, with a reference voltage (typically 100 mV and in some Vvmtrha suffered a volt AC) compared to the result compared to electronic circuits and digital data representing the DC voltage applied to the V meters, will appear on the screen. Today, most of these devices have automatic range (Auto Range) are. Automatic range in this case is that after applying a DC voltage to the voltmeter, the voltmeter automatically selects the first range. If the measured voltage range, some show it. If not in this range of voltage measurement, voltmeter automatically selects a higher range until the measured voltage in the range of the device. The advantage of digital devices Digital measurement devices due to lack of moving parts, very high lifetime (if using them correctly) are and to physical factors such as vibration, humidity, air cleanliness and ... not case sensitive. While with the advancement of technology has made electronic devices today are much more accurate. quantity, it records. Another advantage of a quantity measured by a digital system is that when the value of this quantity is transferred to the computer, the computer can take the necessary decisions on the value of this quantity. For example, if the amount is less than what has already been set, the computer can special order for this issue.

multimeter

Electrical quantities such as voltage multimeter is a device for viewing multiple current or voltage and amperage or electrical resistance that can assess the health of the parts or characteristics of a piece. There are two types of analog and digital multimeter digital type which are designed for different purposes.