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  • HG112.png

HG112 type multi-value resistor


HG112 multi-valued resistors are manufactured in accordance with the technical conditions stipulated in the industry standard JB/T8225-99 "Laboratory DC Resistors" of the People's Republic of China. It complies with the technical requirements stipulated in the international standard IEC477-74 "Laboratory DC Resistors".

  • Product description
  • HG112 multi-valued resistors are manufactured in accordance with the technical conditions stipulated in the industry standard JB/T8225-99 "Laboratory DC Resistors" of the People's Republic of China. It complies with the technical requirements stipulated in the international standard IEC477-74 "Laboratory DC Resistors".


    1. Introduction

    This model of multi-valued resistor is a multi-valued resistor composed of decimal disks connected in series. The resistance value between the two terminals can be changed by changing the position of the switch brush contact. It can easily calibrate the whole machine 0.02 Resistors below level and complete machine calibration portable DC single-arm bridge, etc. It can also be used in factories, schools and scientific research institutions for electrical measurement and for precision adjustment of resistors in DC circuits. This resistor has the advantages of small zero resistance and small resistance variation.

     

    1. Resistance value adjustment range: 0~111111.10Ω

    2. Accuracy of each step disk:

    3. The residual resistance of the resistor R0 = (10±2) mΩ;

    4. The reference power of the resistor: 0.05W; the nominal power used: 0.1W.

    5. Reference temperature: 20±0.5℃; nominal operating temperature: 20±5℃.

    6. Reference relative humidity: 40% ~ 60%;

      Nominal relative humidity: 25% ~ 80%.

    7. The insulation resistance between the resistor circuit and the shell is ≥1×1010Ω.

    8. Between the resistor line and the shell, it can withstand a frequency of 50HZ and a voltage of A sine wave AC voltage of 2000V will not break down for 1 minute.

    9. Overall dimensions: 410×260×150mm.

    10. Weight: about 5kg.

     

    Step disc(Ω)

    ×104

    ×103

    ×102

    ×10

    ×1

    ×0.1

    ×0.01

    Accuracy(%)

    ±0.05

    ±0.01

    ±0.05

    ±0.5

    ±5

    error level

    0.005

    0.01

    0.05

    0.5

    5

     

    3. Principle and use

    The resistor's decimal resistance disk adopts a light pressure switch structure, with extremely small contact resistance and variation, stable and reliable contact, and long life. The internal resistance is non-inductively wound on the porcelain tube using highly stable manganese-copper alloy wire, and has undergone strict artificial aging treatment, long-term assessment and screening, so it has a very stable resistance value.


    1. Use the instrument correctly. Rotate each reading plate from 0 to 10 several times before use to make the brush contact more reliable.

    2. When the resistor is in use, it should not exceed the specified nominal power.

    3. This resistor should be stored at an air temperature of 10 to 30°C and a relative humidity of

    ≤80%, in an room that does not contain gases that corrode the instrument and harmful impurities, and the instrument is not exposed to direct sunlight.

    4. Documents supplied with the product:

    a. Packing list;

    b. Instructions for use;

    c. Product certificate;

    As long as the user abides by the rules of storage and use, within 12 months from the date of shipment from the manufacturer, if the product is of poor quality or cannot work properly, the factory will repair it for free for the user.