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AMP-25, AMP-25-EUR
Calibration Procedure
Periodic calibration is required to conduct correct measurement. This instrument needs
periodic calibration at intervals of one year. Calibrate the instrument according to the following
procedures.
Cautions
Read instruction manual and understand the use of the instrument and its accessory(ies)
correctly before proceeding the calibration activities.
Calibrate the instrument at
instrument to sit at this environment condition for > 30 minutes before calibration.
Erroneous calibrating operation may lead to the incorrect performance and
measurement.
WARNINGS!
Only trained personnel can do adjustments and repairing of the instrument!
Be aware of all safety precautions to avoid electric shock when working on opened
instrument!
Recommended equipment:
Fluke 5520 calibrator
Transconductance Amplifier
Current coil with overall diameter < 22 mm
1. Enter Calibration Mode
1.1.
Press and hold the
display symbols, then release buttons and press buttons
following sequence to enter the
LPF
I
inrush
→
The
"HOLD"
symbol on display will flash when in calibration
1.2.
Press
LPF
I
inrush button, the display shows "A1", press
to select "25"
2. Calibrate the position error (when in calibration mode)
2.1. Press
button to select AC A mode
2.2. Clamp the jaw around the current coil. Ensure the jaw is completely close.
2.3. Apply the reference current AC 100 A / 50 Hz, and position the jaw as below, then
record the reading on the display.
Current coil
Rev. 002
C 2
23
o
o
C
and humidity of
"HOLD"
button while powering up. The display shows full screen
calibration
I
ZERO
→
HOLD
→
LPF
Page 2 of 7
Procedure for Item Number:
80% R.H. or less.
immediately
procedure mode.
I
lnrush
→
mode.
LPF
I
inrush button again
4588254, 4588268
Allow the
according to the