Valhalla 2300, Руководство по эксплуатации

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4) Allow the 2300 to warm up for 5 minutes.
5) Connect the 2300 as described in Section 6-4-1 to a known resistive load, e.g. a 100-watt
incandescent light bulb. Verify that the voltage display reads the present line voltage, the current
display reads approximately 1 amp, and the power display reads approximately 100 watts. This
should be repeated for each of the 3 channels:
φ
A,
φ
B and
φ
C. Note that Model 2301 has only one
channel.
After successful completion of all of the steps above, the 2300 is fully operational with no faulty parts
apparent.
2-7-2. Verification of Specification
Attempting to prove that the 2300 is performing to specification requires that the user be aware of the
following points:
1) The specifications in Section 2 are valid for reasonable use of the 2300 during the specified period of
time. If the 2300 has been transported it may have been subjected to extremes of temperature. As
with any precision equipment some change in calibration may occur due to this. This effect has
been carefully monitored by Valhalla Scientific and has been found to be small, even in extreme
cases.
2) A wattmeter calibration system is required to verify the specifications of the 2300. A source of
voltage and current in phase with each other is required to check the power accuracy. Phase shifts
between voltage and current will cause measurement errors. The calibration procedure of Section 8
may be used as a guide for verifying specifications.
3) Prior to specification verification it is recommended that the user be familiar with the manual
operation of the 2300 and allow at least one hour for the unit to warm up.
If the 2300 is found to be fully operational but not performing to specifications it is recommended that a
full calibration be performed. If this does not bring all points within specifications, contact your nearest
Valhalla Scientific Service Center before returning the unit for repair or attempting to repair the unit
yourself.