QuadTech Sentry 30 Plus User Manual

Page 82 of 85 Service & Calibration
4.3.6 AC Current Calibration (ACA)
Connect the OUTPUT terminal of the Sentry Plus Series instrument to a resistance box or
resistance standard. Connect an AC/DC current meter in series between the resistance load
(box/standard) and the RTN/LOW terminal of the Sentry Plus instrument. Table 4-3 lists the
resistance loads necessary for the current calibration steps.
Table 4-3: Resistance Loads
Mode Step # Voltage Calibration
Point
Resistance
(Load)
ACA CAL 7 1200 V 0.12mA
10MΩ
ACA CAL 8 1200 V 2.4mA full
500kΩ
ACA CAL9 1200 V 2.4mA
500kΩ
ACA CAL 10 1200 V 12mA
100kΩ
DCA CAL 11 1200 V 0.12mA
10MΩ
DCA CAL 12 1200 V 2.4mA full
500kΩ
DCA CAL 13 1200 V 2.4mA
500kΩ
DCA CAL 14 1200 V 4.8mA
250kΩ
Press [F1] = UP to go to Cal Step 7: ‘ACA 3mA Offset (0.12mA)’.
Press [STOP] to return instrument to steady state.
Press [START] to get offset value.
Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter.
Press [ENTER] to accept reading.
Sentry Plus reverts to “ACA 3mA Offset” display (incorporating the new cal value).
Press [F1] = UP to go to Cal Step 8: ‘ACA 3mA Full (2.4mA)’.
Press [STOP] to return instrument to steady state.
Press [START] to get full value.
Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter.
Press [ENTER] to accept reading.
Sentry Plus reverts to “ACA 3mA Full” display (incorporating the new cal value).
Press [F1] = UP to go to Cal Step 9: ‘ACA 15mA Offset (2.4mA)’.
Press [STOP] to return instrument to steady state.
Press [START] to get offset value.
Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter.
Press [ENTER] to accept reading.
Sentry Plus reverts to “ACA 30mA Offset” display (incorporating the new cal value).
Press [F1] = UP to go to Cal Step 10: ‘ACA 15mA Full (12mA)’.
Press [STOP] to return instrument to steady state.
Press [START] to get full value.
Press [F1] = INC or [F2] = DEC until the SPlus display reads the same as the current meter.
Press [ENTER] to accept reading.
Sentry Plus reverts to “ACA 30mA Full” display (incorporating the new cal value).

QuadTech Sentry 30 Plus Specifications

General

Brand	QuadTech
Model	Sentry 30 Plus
Category	Test Equipment
Language	English