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84C4-A DC Square DC ammeter

Home Products Shanghai ZiYi Marine Instrument Co.,Ltd Ammeter 84C4-A DC Square DC ammeter

84C4-A DC Square DC ammeter

  • Category:Ammeter
  • Inquiry Send Email

    Description

    Product introduction:

    84C4-A DC Square DC ammeter refers to a meter used to measure the intensity of current in a DC circuit. When it is necessary to measure a large current, a low resistance with a certain resistance value can be connected in parallel at the two input terminals to expand the range. The zero point of its scale is usually placed at the extreme left of the scale.

    In the magnetoelectric measuring mechanism, because the wire of the movable coil is very thin, and the current also passes through the hairspring, the allowed current is very small, about several microamperes to several hundred microamperes, so its practical value is very small. . According to the principle that the parallel circuit has a shunt effect, in practice to measure a large current, a shunt resistor must be added. Therefore, the DC ammeter is usually composed of a magnetoelectric measuring mechanism and a shunt resistor in parallel. Because the magnetoelectric ammeter can only measure DC current, it is also called DC ammeter.

    The selection of common DC ammeter is the same as that of DC voltmeter. If a shunt is used, the shunt must be used with the ammeter. The wiring of the DC ammeter is polar. The positive pole of the power source (the pole where the current flows out) must be connected to the ﹢ terminal of the ammeter, and the ﹣ terminal of the ammeter is connected to the negative pole of the power source (the pole into which the current flows). When the polarity of the DC meter is not clear, the voltage and current can be reduced and temporarily connected with a DC voltage regulator. When the pointer is in the correct direction, the wiring is correct. In the opposite direction, the positive and negative electrodes (﹢, ﹣) can be reversed and connected.

    The DC ammeter can be divided into ammeter, milliamp meter and microamp meter according to the range, which are respectively represented by the symbols A, mA and uA.

    1. Purpose:

    Embedded installation on ships, locomotives, power stations, mining metallurgy, petrochemicals or other mobile electrical equipment and devices to measure DC current or voltage. It can also be used as a secondary meter for converting non-electricity to electric energy.

    2. Main technical performance:

    Class 2.5, splash proof and vibration resistant.

    3. Conditions of use:

    Ambient temperature: -25 ~ + 55 ℃, relative temperature: <98% RH

    4, measuring range:

    Model and name

    Measuring range

    Access method

    84C4-A

    Square DC ammeter

    100, 150, 200, 300, 500 μA

    1, 3, 5, 10, 15, 20, 30, 75, 100 150, 200, 300, 500 mA

    1, 2, 3, 5, 7.5, 10A

    Direct access

    15, 20, 30, 50, 75, 100, 150, 200, 300, 500, 750A

    1, 1.5, 2, 3, 4, 4.5, 6, 7.5KA

    Equipped with 75mV external fixed value shunt

    84C4-V

    Square DC Voltmeter

    3, 7.5, 10, 15, 20, 30, 50, 75, 100, 150, 250, 300, 350, 500, 600V

    Direct access

    5, weight: 0.4kg

    Inquiry Us





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    Product Categories

    • Shanghai Automation Instrumentation No. 3 Factory
      • Thermocouples
      • Thermal resistance
      • Bimetal thermometer
      • Temperature transmitter
      • Non-contact thermometer
    • Shanghai Automation Instrumentation No. 4 Factory
      • Pressure guages
      • Pressure transmitters
      • pressure controllers
    • Shanghai Far East Instrumentation Factory
    • Shanghai Automation Instrumentation No. 5 Factory
      • Ultrasonic Level Meter
      • Magnetic Level Gauge
      • Magnetostrictive Liquid Level Transmitter
      • Radar Level Meter
      • Electric Float Level Transmitter
      • Floating Ball Level Meter
      • Floating Ball Liquid Level Switch
      • Radio frequency admittance switch
      • Input-Type Liquid Level Transmitter
      • Tuning Fork Level Switch
      • Intelligent Radar Level Meter
      • Resistance level switch
    • Shanghai No. 9 Automation Instrumentation Co., Ltd.
      • Electromagnetic Flowmeter
      • V-Cone Flowmeter
      • Glass Rotor Flowmeter
      • Metal Tube Rotor Flowmeter
      • Throttling Device
      • Ellipse Flowmeter
      • Vortex Flowmeter
      • Turbine Flowmeter
      • Wedge Flowmeter
      • Sliding vane flowmeter
      • Roots flowmeter
      • Flow Switch
    • Shanghai Automation Instrumentation No. 11 Factory
      • Electric Actuator
      • electric-pneumatic valve positioner
      • angle electric actuator
      • Intelligent electric actuator
    • Shanghai Automation Instrumentation No. 7 Factory
      • Electric control valve
      • Pneumatic control valve
    • Shanghai Automation Instrumentation Co., Ltd.
    • Shanghai ZiYi Marine Instrument Co.,Ltd
      • Frequency Meter
      • Ammeter
      • Power Factor Meter
      • Voltmeter
      • Current voltmeter
      • Controllable Voltage Regulator
      • Megger
    • Shanghai Automation Instrument Tachometer and Instrument Motor CO.,LTD
      • Fixed magnetic tachometer
      • Handheld centrifugal tachometer
      • Rotating speed digital displayer
      • Electric tachometer
      • Non-contact handheld digital tachometer
      • Standard speed generator
    • Shanghai Dahua Instrument Factory
      • Automatic balanced recorder
      • Circular chart recorder
      • Intelligent digital display regulator
      • Intelligent data logging device
    • Shanghai Hua Dong Electronic Instrument Factory
      • Weighing sensor
      • Weighing controller
      • Weighing amplifier
      • Weighting Resistance Strain Meter

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