Milliohmmeter Calibration Standard Resistance

Megohmmeter, also known as insulation resistance tester, is a tool used to measure the insulation resistance of electrical equipment, cables, and wiring. To ensure accurate insulation resistance readings, it is crucial to calibrate the megohmmeter periodically.

In the calibration process, a standard resistor with a known value is used to verify the accuracy of the megohmmeter's measurement. The standard resistors used for megohmmeter calibration are usually high-precision metal foil resistors with low temperature coefficients. These resistors are made of high-quality materials and undergo a rigorous testing process to ensure their accuracy.

1. Select the appropriate standard resistor: Choose a standard resistor with a resistance value that matches the range of the megohmmeter being calibrated.

2. Verify the resistance value of the standard resistor: Use a high-precision digital multimeter or a bridge circuit to confirm the exact resistance value of the standard resistor.

3. Connect the standard resistor to the megohmmeter: Follow the manufacturer's instructions on how to connect the standard resistor to the megohmmeter being calibrated.

4. Take the measurement: Turn on the megohmmeter and take the measurement. Compare the reading with the known value of the standard resistor.

5. Adjust the megohmmeter: If the difference between the measured value and the known value of the standard resistor is significant, adjust the megohmmeter accordingly following the manufacturer's instructions.

6. Verify the calibration: After adjustment, take another measurement and verify that the readings are within the acceptable range.

7. Document the calibration: Record the calibration information, including the date, standard resistor used, and the results of the calibration.

Megohmmeter calibration should be performed periodically, depending on the frequency of use and the manufacturer's recommendation. Regular calibration ensures accuracy and consistency in measurements, which is essential for maintaining the safety and reliability of electrical equipment and systems.

In conclusion, standard resistors with known values are used in calibrating megohmmeters to ensure accurate measurements. The calibration process involves careful selection of the standard resistor, verification of its value, and adjustment of the megohmmeter if necessary. Regular calibration is essential in maintaining the accuracy and reliability of the megohmmeter readings.

Product characteristics

The metal foil standard resistor is manufactured according to JB/T8225-1999 laboratory DC resistance standard and IEC477. The fully sealed structure ensures good long-term stability of resistance and small temperature coefficient. This resistor is BZ6 DC standard resistor upgrade product, compared with BZ6 standard resistor, metal foil standard resistor does not need constant temperature oil tank, small size, suitable for electrical experimental research institutions, factories, school laboratories as DC resistance standard use. In order to meet the requirements of users, the metal foil standard resistor has increased the working power.

Technical data

Nominal resistance value 0.001 R.0.01, 0.1R, 1R, 10R,100R, 1K, 10K,100K

0.001 RMaximum current 100A,

Resistor grade index 1*10-4,

Nominal use power 3W,5W.

The resistance can be used for both AC and DC.

Support Customization

Hot Tags: milliohmmeter calibration standard resistance, China milliohmmeter calibration standard resistance manufacturers, suppliers, factory, Milliohmmeter Calibration Standard Resistance, Working Measurement Standard Resistance, Standard Resistor, standard resistor wattage, standard resistance values, parallel resistor network