Guildline 6530 Series, Руководство оператора

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Section 6
OM6530-C1-00
19 November, 2019
6-3
Error (ppm) =
_______________
x 10
6
V
nom
Use the absolute value of Vdvm and Vreport. For each test voltage verify that the Error
(ppm) does not exceed the ± 50 ppm of the listed value in the calibration report (Table 6-
3).
6.1.6. OPERATIONAL CHECK
Performing an instrument Power On Reset and observing the response can check the
operation of the TeraOhm Bridge-Meter display and indicators. The TeraOhm Bridge-
Meter will respond as detailed in Section 4.2. Power “On” the instrument and observe
that the instrument responds to the series of internal diagnostic checks as detailed in
Section 4.2
6.2. CALIBRATION PROCEDURE
The procedure outlined in this section may be used to perform an Artifact Calibration on the
6530 TeraOhm Bridge-Meter to remove the effect of long term drift associated with capacitor
and thresholds in the electrometor. This process ensures the base current measurement of the
electrometer operates within the limits stated in the specifications (Section 8) of this manual.
This calibration procedure should be executed on an annual basis as a minimum to maintain full
rated 12 month accuracy when the 6530 is used for current measurements. A full resistance
confirmation of the 6530 should be performed after the artifact calibration as this, DOES
AFFECT THE RESISTANCE OPERATION, or whenever there is a question of instrument
accuracy. Full performance confirmation and any subsequent adjustments, though recommended
to be performed at the factory, may be performed by a qualified individual as per the procedure
outlined in the Service Manual (SM6530). This manual can be obtained from Guildline
Instruments Limited. A brief description of the Calibration and Instrument theory can be found
in Section 6.4.
6.2.1. ENVIRONMENTAL CONDITIONS
Calibration of the instrument should only be performed while the 6530 is being operated
within the operating limits of temperature and humidity specified in Section 8 of this
manual.
6.2.2. INITIAL CONDITIONS
A warm-up time of at least one hour must be allowed before beginning the verification
process. If the instrument has been subjected to extremes of temperature outside the
operating limits, additional time should be allowed for the instrument components to
stabilize to their normal operating temperatures. Typically, it takes one additional hour to
stabilize a unit that has been exposed to a temperature 10

C outside the specified
temperature range.