Kikusui PWX1500H, Руководство пользователя

Страница: 90 / 131

90
PWX
Calibration
The PWX series is calibrated before shipment. To maintain long-term performance, we rec-
ommend periodic calibration.
For calibration, contact your Kikusui agent or distributor.
If you are going to calibrate the PWX series yourself, follow the procedures below. All of the
calibration items of the PWX series are described.
Calibration overview
The following eight calibration items are available.
Be sure to calibrate both the offset and full scale values.
•
Output voltage offset (10 %) • Output voltage full scale (100 %)
• Voltmeter offset (0 %) • Voltmeter full scale (100 %)
• Output current offset (10 %) • Output current full scale (100 %)
• Ammeter offset (0 %) • Ammeter full scale (100 %)
Required devices
• DC voltmeter (DVM) with a measurement accuracy of 0.02 % or more
• Shunt resistor
Environment
Perform calibration in the following environment.
• Temperature: 23 °C ± 5 °C
• Humidity: 80 %rh or less
To minimize the calibration error due to initial drift, warm up the PWX series for at least 30
minutes before calibration. In addition, warm up the DVM and shunt resistor for as long as is
necessary.
Model
Recommended shunt resistor
Rating Tolerance
PWX750LF 100 A / 50 mV (0.50 m Ω )
< ±0.1 %
PWX750MLF 30 A / 50 mV (1.67 m Ω )
PWX750MHF 10 A / 50 mV (5 m Ω )
PWX750HF 5 A / 50 mV (10 m Ω )
PWX1500L 150 A / 50 mV (0.50 m Ω )
PWX1500ML 100 A / 50 mV (0.50 m Ω )
PWX1500MH 20 A / 50 mV (2.5 m Ω )
PWX1500H 10 A / 50 mV (5 m Ω )