Calibration Adjustment
5.1 General 5
5-3
5.1 General
5.1.1 Introduction
The following information, provides the complete Calibration Adjustment procedure for
the Fluke 434-II/435-II/437-II Energy & Power Quality Analyzer (referred to as
Analyzer). The Analyzer allows closed-case calibration using known reference sources.
It measures the reference signals, calculates the correction factors, and stores the
correction factors in RAM. After completing the calibration, the correction factors are
stored in FlashROM so that they stay available are disconnection from all power sources.
The Analyzer should be calibrated after repair, or if it fails the performance test. The
Analyzer has a normal calibration cycle of one year.
5.1.2 Calibration number and date
When storing valid calibration data in FlashROM after performing the calibration
adjustment procedure, the calibration date is set to the actual Analyzer date, and
calibration number is raised by one. To display the calibration date and - number:
1. Press
F1
to leave the Language selection menu. Then
SETUP
, and then press
F2
to see the Version & Calibration data (see Figure 5.1).
2. Press
F5
to return to exit the Version & Calibration screen.
Figure 5-1. Version & Calibration data.
5.1.3 General instructions
Follow these general instructions for all calibration steps:
• Allow the Calibrator to satisfy its specified warm-up period. After each change of
output conditions, wait for the Calibrator to settle
. It may take a couple of seconds for
the output voltage to stabilize!
• The required warm up period for the Analyzer is included in the Warming Up period
(Calibration step CL 0200).
• Ensure that the Analyzer battery is charged sufficiently.
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