Technical parameters of BEST-121 resistance tester

1. The testing voltage range should include: 100V~500V
2. The measurement range should include: 1 × 106 Ω~1 × 1017 Ω
3. When the resistance value is greater than 1012 Ω, the measurement error should be less than ± 20%, and when the resistance value is not greater than 1012 Ω, the measurement error should be less than ± 10%.
4. The insulation resistance of the input wiring should be greater than 100 times the input resistance of the instrument.
5. The sample and measuring wire should be in good condition during testing.
6. The instrument should be calibrated regularly.

At a constant temperature, there is a formula:

ρL

R= —

S