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Oppon

Professional Pen Type Digital Multimeter MS8211

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US $38.39
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Professional fully featured pen-type digital multimeter. It measures AC/DC voltage, resistance, diode check and etc. The digital multimeter is a battery-powered, average responding-rms indicating multimeter. Digital Multimeter has data hold, maximum value hold, automatic shutdown, continuity test, diode test. Provides more reliable and stable instrument performance. This new probe style meter is a full function multimeter in a convenient pocket pen type. Don't miss it!

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Product Description

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  • Specifications:

    • The digital multimeter is a battery-powered, manual or automatic range switching multimeter
    • Outsourcing rubber overmolding make the meter more firm and durable
    • Max value and data hold
    • Automatic shutdown
    • Can detect a specific frequency AC voltage
    • Voltage detection sensitivity can be adjusted
    • Voltage detection of sound and light alarm
    • Manual / automatic range switching
    • The maximum display number is 1999
    • DC Voltage: 200m/2/20/200/600V±0.7%
    • AC Voltage: 200m/2/20/200/600V±0.8%
    • Resistance: 200/2K/20k/200k/2MΩ/20 MΩ±1.2% 
    • Power Source: 2 x 1.5V AAA Batteries
    • Size: 208 x 38 x 29mm/8.1 x 1.5 x 1.1in(L x W x T)

    Detail:

    Oppon Professional Pen Type Digital Multimeter MS8211
    Oppon Professional Pen Type Digital Multimeter MS8211

    • The digital multimeter provides more reliable and stable instrument performance

    Digital multimeters (DMM or DVOM):

    • Modern multimeters are often digital due to their accuracy, durability and extra features. In a digital multimeter the signal under test is converted to a voltage and an amplifier with electronically controlled gain preconditions the signal. A digital multimeter displays the quantity measured as a number, which eliminates parallax errors.
    • Modern digital multimeters may have an embedded computer, which provides a wealth of convenience features.

    Measurement enhancements available include:

    • Auto-ranging, which selects the correct range for the quantity under test so that the most significant digits are shown. For example, a four-digit multimeter would automatically select an appropriate range to display 1.234 instead of 0.012, or overloading. Auto-ranging meters usually include a facility to 'freeze' the meter to a particular range, because a measurement that causes frequent range changes is distracting to the user. Other factors being equal, an auto-ranging meter will have more circuitry than an equivalent, non-auto-ranging meter, and so will be more costly, but will be more convenient to use.
    • Auto-polarity for direct-current readings, shows if the applied voltage is positive (agrees with meter lead labels) or negative (opposite polarity to meter leads).
    • Sample and hold, which will latch the most recent reading for examination after the instrument is removed from the circuit under test.
    • Current-limited tests for voltage drop across semiconductor junctions. While not a replacement for a transistor tester, this facilitates testing diodes and a variety of transistor types.

    Sensitivity and input impedance:

    • When used for measuring voltage, the input impedance of the multimeter must be very high compared to the impedance of the circuit being measured; otherwise circuit operation may be changed, and the reading will also be inaccurate.
    • Meters with electronic amplifiers (all digital multimeters and some analog meters) have a fixed input impedance that is high enough not to disturb most circuits. This is often either one or ten megohms; the standardization of the input resistance allows the use of external high-resistance probes which form a voltage divider with the input resistance to extend voltage range up to tens of thousands of volts.
    • Most analog multimeters of the moving-pointer type are unbuffered, and draw current from the circuit under test to deflect the meter pointer. The impedance of the meter varies depending on the basic sensitivity of the meter movement and the range which is selected. For example, a meter with a typical 20,000 ohms/volt sensitivity will have an input resistance of two million ohms on the 100 volt range (100 V * 20,000 ohms/volt = 2,000,000 ohms). On every range, at full scale voltage of the range, the full current required to deflect the meter movement is taken from the circuit under test. Lower sensitivity meter movements are acceptable for testing in circuits where source impedances are low compared to the meter impedance, for example, power circuits; these meters are more rugged mechanically. Some measurements in signal circuits require higher sensitivity movements so as not to load the circuit under test with the meter impedance.
    • Sometimes sensitivity is confused with resolution of a meter, which is defined as the lowest voltage, current or resistance change that can change the observed reading.
    • For general-purpose digital multimeters, the lowest voltage range is typically several hundred millivolts AC or DC, but the lowest current range may be several hundred milliamperes, although instruments with greater current sensitivity are available. Measurement of low resistance requires lead resistance (measured by touching the test probes together) to be subtracted for best accuracy.
    • The upper end of multimeter measurement ranges varies considerably; measurements over perhaps 600 volts, 10 amperes, or 100 megohms may require a specialized test instrument.

    Package Included:

    • 1 x Pen Type Digital Multimeter

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