10.4-44
Section 10: Calibrating the Model 9100: Resistance Function
Final Width = 215mm
10.4.7.9
Verification procedures
A full Verification is available at a
Fluke
service centre, and this is the preferred method.
The user may adopt the following procedural guidance to give a high confidence level that the 9100 is functioning within its
specification. Whether an acceptance test or verification test is required, the procedure is the same. The primary points for
verification are the calibration points. These are usually multiples of threes. If preferred, the user may use the multiple of 1.9
immediately below; this usually gives slightly better uncertainty, due to better specifications from the 1281.
The chosen points should be measured using a
Fluke
1281, 1271
,
or
4950.
A 1281
(or 1271 within 24 hours of self cal) will usually
be preferred by the user for reasons of availability and speed.
If
it
is
desired
to verify the 10A range,
the use
of
a
Fluke
4953 shunt
is recommended.
The specifications which determine acceptable performance at 23
°
C
±
2
°
C for the auxiliary functions are simply those published
in the handbook. For verification purposes, the errors of the 1281 or 1271 are compensated for by the fact that the handbook spec
is for five degrees. The 3
°
margin allows for the 1281 errors.
