TB 9-6625-2352-35
Table 8c. Simpson, Model 260-5 Ac Voltage
Calibration Performance Limits and Adjustments
Ac Voltage
Test instrument
Calibrator
Test instrument
1
Ac volts
Indication
Initial output
err indication
Adjustments
range
(V)
(V)
(Hz)
(%)
250
250
250
60
3
R31 (R)
2.5
2.5
2.5
60
3
R28 (R)
10
10
10
60
3
----
50
50
50
60
3
----
1000
1000
1000
60
3
----
5000
900
900
60
22.2
----
2
TI must be calibrated in horizontal position.
1
Reduce output to minimum and move positive lead from TI + input to TI A.C. 5000 V input. After 5000 V check is complete,
2
reduce output to minimum and move positive lead to TI + input.
Table 8d. Simpson, Model 260-5 Resistance
Calibration Performance Limits and Adjustments
Resistance
Test instrument
Resistance standard indications
Test instrument
1
(Ω)
Resistance
Indications
Min
Max
Adjustments
ohms scale (Ω)
range
2
RX1
12
10.7
13.5
----
RX100
12
1110
1300
----
RX10K
12
111,000
130,000
----
TI must be calibrated in horizontal position.
1
Short leads and adjust OHMS ADJ control for a 0 indication on ohms scale. Repeat for each range.
2
Table 8e. Simpson, Model 260-5 Dc Current
Calibration Performance Limits and Adjustments
Dc Current
Test instrument
Calibrator
Test instrument
1
Indication
Initial output
err indication
Adjustments
Dc current range
(A)
(A)
(%)
50 A
50 A
50 A
1.5
R32 (R)
2
1 mA
1 mA
1 mA
2
R27 (R)
10 mA
10 mA
10 mA
2
----
10 mA
6 mA
6 mA
3.33
----
10 mA
2 mA
2 mA
10
----
100 mA
100 mA
100 mA
2
----
500 mA
500 mA
500 mA
2
----
10 A
10 A
10 A
2
R22 (R)
3
TI must be calibrated in horizontal position.
1
Connect positive lead to TI +50 A/250 mV input. After 50 A check is complete, reduce output to minimum and move
2
positive lead to TI + input.
3 Reduce output to minimum and connect TI negative lead to -10A input and connect TI positive lead to +10A input.
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