P1.1 — Select pH buffer series (USA—NIST)
1. In measurement mode, long press to enter P1.0, press to enter P1.1
2. Press USA flashes; Press to choose USA→NIST; Press to confirm.
USA—USA NIS—NIST
3. Press to enter P1.2, or press to return to measurement mode.
P1.2 — Set up calibration reminder (No—H00—D00)
1. Press , “No” flashes. Press to choose No→H00→D00；
NO—no setting; H00—set 0-99 hours; D00—set 0-99 days.
2. When “H” flashes, press , “00” flashes; Press to adjust hours,
press to confirm; when “D” flashes, press , “00” flashes,
press to adjust days, press to confirm; When “No” flashes,
press to confirm.
3. Press to enter P1.3, or press to return to measurement mode.
P1.3 — Check Calibration Time
1. The data and time of last calibration displayed on the left image is: 18:08, 06/08/2016
2. Press to enter P1.4, or press to return to measurement mode.
P1.4 — Select pH calibration mode (3P—5P)
1. Press , “3P” flashes. Press to choose 3P→5P. Press to confirm.
3P— 1 to 3 point calibration; 5P—1 to 5 point calibration. (see 4.2.2 for details)
2. Press to enter P1.5, or press to return to measurement mode.
P1.5 — Return to factory default mode (No—Yes)
Press , “No” flashes, press to choose No→Yes; Press to confirm, the meter
returns to measurement mode.
No— not return to factory default mode; Yes—return to factory default mode
Conductivity Setting Sub-Menu
P2.1 — Select electrode’s constant（1.0—10.0—0.1）
1. In P2.0, press to enter P2.1
2. Press , “1.0” flashes, press to choose 1.0→10.0→0.1; press to confirm
3. Press to enter P2.2, or press to return to measurement mode.
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