Dc Current Calibration - QuadTech Sentry Plus Series Instruction Manual

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
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
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
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
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).
Service & Calibration
Cal Step 11: 'DCA 3mA Offset
Cal Step 12: 'DCA 3mA Full
Cal Step 13: 'DCA 5mA Offset
Cal Step 14: 'DCA 5mA Full
(0.12mA)'.
(2.5mA)'.
(2.4mA)'.
(4.8mA)'.
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