8
SRL Series
8
Maintenance
4.3.3 Required Equipment
Many combinations of standards, transfer stan-
dards, meters, and bridges may be used to calibrate
this instrument. The following are some possible
choices:
•
Resistance Standards or Transfer Standards
for the required values with traceable cali-
brations, such as the following standards
available from IET Labs
•
SR-102 100
Ω
•
SR-103 1 kΩ
•
SR-104 10 kΩ
•
SRL series
•
Precision resistance measurement bridge
or multimeter, with a transfer accuracy
of ±l ppm. Options include:
•
Measurements International Model
6010C, 6000B
•
ESI model 242, 242A, 242C, or
242D
•
A high-precision, high-stability digi-
tal multimeter (e.g. Fluke 8508A)
along with a set of resistance stan-
dards for ratio mode.
4.3.4 Calibration Procedure
To calibrate an SRL unit, proceed as follows:
1. Set up the calibration equipment in the resis-
tance measurement mode.
2. Confi rm the resistance of the unit.
Allow a confi dence band for the uncer-
tainty of the measuring instrument and
setup.
3. Confi rm that the resistance is consistent with
historical measurements.
4.4 Replaceable Parts List
Reference
IET Pt No
Description
1
BP-1000-RD
Binding Post, Red
2
BP-1000-BK
Binding Post, Black
3
BP-1000-GN
Binding Post, Green
3
BP-1000-BL
Binding Post, Blue
Not Shown
SRL-*-Res
SRL resistor assembly
Replace * with nominal resistance value
Table 4-1: Replaceable Parts List
Figure 4-1: SRL Replaceable Parts
1
2
3
4
Summary of Contents for SRL Series
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