Tenma 72-10465, Руководство пользователя, Страница: 3 / 14

3
IMPORTANT SAFETY INFORMATION
• When using electrical appliances basic safety precautions should always be
followed.
• Do not use the meter in environments exposed to explosive gas, vapour or dust, in
direct sunlight or high radiation.
• There are no user serviceable parts in this product. Refer all servicing to qualified
personnel.
• Turn off all the circuit power and discharge completely all capacitors before
measuring in-line components.
• Measurement terminals, capacitors and other live components must be discharged
before being measured.
• There are two power supplies available for the meter: 9V battery and USB
powered.
• If the USB port is connected to the PC, the meter is USB-powered and will
communicate with the PC for data collection.
MEASUREMENT RANGE & ACCURACY
L: 20mH - 2000H best accuracy: (0.5% + 5)
C: 200pF - 20 µ F best accuracy: (0.5% + 5)
R: 20Ω - 200MΩ best accuracy: (0.3% + 5)
Impedance/
Frequency
DCR 100/120Hz 1kHz 10kHz 100kHz
0.1-1 1.0% 1.0% 1.0% 1.0% 1.0%
1-10 0.5% 0.5% 0.5% 0.5% 0.5%
10-100k 0.3% 0.3% 0.3% 0.5% 0.3%
100k-1M 0.5% 0.5% 0.5% 1.0%
1M-20M 1.0% 1.0% 1.0%
20M-200M 2.0% 2.0% 5.0%
Remark D ≤ 0.1
Note: Multiply by √1+D² if D exceeds 0.1
Formula to convert capacitance to impedance: Zᶜ = 1/2πfC
Formula to convert inductance to impedance: Zᶫ = 2πfL
AMBIENT CONDITIONS
• Altitude: <2000 metres
• Storage humidity: ≤ 75% RH
• Operating environment: 0°C~40°C
• Storage environment: -20°C~50°C
Please read these instructions carefully before use and retain for future
reference.