Tegam 1750 - Calibration Verification Procedure

10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110 • sales@tegam.com
6-3
SERVICE INFORMATION
Calibration Verification Procedure
Scope: The Calibration Verification procedure should be performed immediately after the calibration
adjustment procedure. These specifications are tighter than the advertised 1750 specifications in
order to insure a safe margin between the instrument’s calibration adjustments and its advertised
specifications.
Procedure
1. With the instrument Time Delay set to 111 ms when in the Delayed Continuous Mode (steps 2-
12), manually select the 2 mΩ range by pressing the 2 mΩ range key. The instrument will need
changed to Fast Continuous mode for steps 13-16.
NOTE: The Calibration Verification cannot be performed with the instrument in the AUTO range mode.
2. Connect the Kelvin Klips™ to the 2 mΩ standard securely and observe the subsequent reading.
Record the resistance reading in the table below and verify that it falls within the specified
allowable ranges.
3. Check either the PASS or FAIL box and proceed to the next calibration point. Repeat steps 1-3
until all ranges have been verified.
4. Should a range fail to meet calibration specifications, repeat the calibration procedure or call
TEGAM for service.
#
Resistance
Range
Specification
(± counts)
Lower
Allowable
Limit
Read
Value
Upper
Allowable
Limit
PASS
√
FAIL
√
1
AUTO RANGE IS NOT USED FOR VERIFICATION
2
2 mΩ @1 A
± 3
1.9997
2.0003
3
20 mΩ @ 1 A
± 3
19.997
20.003
4
200 mΩ @ 1 A
± 2
199.98
200.02
5
2 Ω @ 100 mA
± 2
1.9998
2.0002
6
20 Ω @ 10 mA
± 2
19.998
20.002
7
200 Ω @ 10 mA
± 2
199.98
200.02
8
2 kΩ @ 1 mA
± 2
1.9998
2.0002
9
20 kΩ @ 100 uA
± 2
19.998
20.002
10
200 kΩ @ 10 uA
± 2
199.98
200.02
11
2 MΩ @ 1 uA
± 4
1.9996
2.0004
12
20 MΩ @ 100 nA
± 5
19.995
20.005
13
200 mΩ Fast @ 1 A
± 11
199.89
200.11
14
2 Ω Fast @ 100 mA
± 11
1.9989
2.0011
15
20 Ω Fast @ 10 mA
± 11
19.989
20.011
16
200 Ω Fast @ 10 mA
± 11
199.89
200.11