QuadTech Sentry 30 Plus User Manual

Service & Calibration Page 83 of 85
4.3.7 DC Current Calibration
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.
Press [F1] = UP to go to Cal Step 11: ‘DCA 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 “DCA 3mA Offset” display (incorporating the new cal value).
Press [F1] = UP to go to Cal Step 12: ‘DCA 3mA Full (2.5mA)’.
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 “DCA 3mA Full” display (incorporating the new cal value).
Press [F1] = UP to go to Cal Step 13: ‘DCA 5mA 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 “DCA 15mA Offset” display (incorporating the new cal value).
Press [F1] = UP to go to Cal Step 14: ‘DCA 5mA Full (4.8mA)’.
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 “DCA 15mA Full” display (incorporating the new cal value).

QuadTech Sentry 30 Plus Specifications

General

Brand	QuadTech
Model	Sentry 30 Plus
Category	Test Equipment
Language	English