1. Temperature Influence
- Temperature Compensation: Record the ambient temperature before measurement and perform corresponding compensation calculations to improve measurement accuracy.
- Temperature Range: Ensure testing is conducted within the manufacturer’s recommended temperature range to avoid extreme temperatures affecting results.
2. Humidity Factors
- Environmental Control: Conduct tests in a dry environment or use heating equipment to reduce humidity, minimizing moisture’s impact on insulation resistance.
- Surface Cleaning: Clean the object’s surface to be measured before testing to remove dust and dirt, preventing inaccuracies.
3. Voltage Influence
- Multi-Voltage Testing: Perform multiple tests at different voltages to obtain a more comprehensive understanding of insulation status and select an appropriate voltage as a standard.
- Standardized Procedures: Follow standardized testing procedures to apply the same voltage and time in each test.
4. Residual Charge
- Discharge Procedure: Implement an effective discharge procedure before testing to ensure that the object being measured is fully discharged. If necessary, use specialized discharge tools or methods.
- Grounding Measures: Ensure the tested object is well-grounded to eliminate static interference.
5. Measurement Time
- Stabilization Time Optimization: Optimize stabilization time based on material characteristics, recording the best waiting time for different materials to enhance data accuracy.
- Dynamic Monitoring: Use devices capable of real-time monitoring and recording changes in insulation resistance to capture instantaneous variations.
6. Testing Instrument Itself
- Instrument Calibration: Regularly calibrate testing instruments to ensure their accuracy and reliability.
- Choosing Appropriate Models: Select suitable digital insulation resistance tester models based on the object’s characteristics (e.g., rated voltage, insulation grade).
To understand the latest quotation related to insulation resistance, click to contact us.
7. Operator Factors
- Training and Experience: Ensure operators receive professional training and understand how to use digital insulation resistance tester and handle potential issues properly.
- Recording and Analysis: Maintain detailed test records and regularly analyze data to identify potential problems and trends.
The accuracy of the digital insulation resistance tester is mainly affected by the following factors:
Environmental conditions: Environmental temperature, humidity, magnetic field, and other factors impact the insulation resistance tester’s measurement accuracy. For example, temperature changes can increase the tester’s measurement errors.
Test conditions: Test conditions such as test voltage and test time will also affect the tester’s accuracy. For example, if the test voltage is too low, the measured insulation resistance value may be too small, while if the test voltage is too high, the insulation material may be broken down.
Tester’s own error: The tester’s manufacturing process, circuit design, component selection and other factors may cause certain errors in the tester itself. For example, the tester’s sampling accuracy, amplifier noise, etc., will all affect the measurement results.
Operator’s skill level: The operator’s skill level, choice of test method and other factors will also impact the tester’s accuracy. For example, operators unfamiliar with the test process or incorrectly setting parameters may produce inaccurate measurement results.