10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
•
4-1
MAINTENANCE
SECTION 4
MAINTENANCE
4.1
Inspection
These units should be inspected semi-annually. Check that
the case opens and closes with no binding. Check that the
four pushbuttons rate smoothly. Check all four binding posts
to ensure that they operate smoothly.
4.2
Cleaning
The instrument should be cleaned periodically, as is
necessary, using mild soap and a damp cloth both on the
outside of the case and on the front panel. No lubrication is
required.
4.3
Test Equipment Required for Calibration and Repair
Calibration of the R1L-D1 is recommended on a yearly
basis, and is done at a temperature of 23 ± 1 °C.
A computer with RS-232 interface and with terminal
emulation software such as HyperTerminal.
Precision decade resistance box covering the range from 0.1
Ω to 1.06 k, such as a PPM, Inc., Model R6-111.111K, or
equal. Required accuracy is ± 0.01% of s 0.002 Ω.
*For equivalent R1L-D1 calibrator box use the following
resistors:
Calibrator position nominal resistance
1
0.100000
3
1.000000
5
10.00000
7
100.0000
9
1000.000
