TM 09241 B-12&P
2-11. OPERATION OF pH/TEMPERATURE TEST SET. - continued
The hold prompt will be displayed if the electrode remains in the buffer too long after completing
calibration. If this happens, press measure.
While stirring gently, press cal keypad (4), CALIBRATE is displayed above the main readout and P1 is
displayed in the lower field. P1 indicates that the meter is ready for the first buffer. When the electrode (11) is stable the
ready prompt will be displayed and a temperature corrected pH value for the buffer is displayed. Press the (5)
(6) keypad, the first digit will start flashing. Scroll until the correct first digit value for the buffer appears, press yes keypad
(1). The second digit will start flashing. Scroll until the correct second digit value for the buffer appears, press yes keypad.
Continue until all digits have been correctly entered. The display will remain frozen for two seconds then P2 will be
displayed in the lower field. Press measure keypad (3). SLP will be displayed in the lower field and the electrode slope, in
memory, will be displayed in the main field. Press yes keypad. If no slope value is in memory enter the correct slope
determined from a two buffer calibration or 100.0 if unknown and then press yes keypad. Remove electrode and probe
(12). Press power keypad (2) to turn meter off.
Rinse electrode (11), probe (12), beakers (15), and stir rods (20) if used with demineralized or distilled water.
If storage/soaker bottle (14) is not full, top off with prepared standard pH buffer solution 4.00. Slide
storage/soaker bottle onto electrode (11) and tighten cap. Be sure electrode tip is immersed in buffer solution.
(1) Loosen cap on storage/soaker bottle (1) and slide bottle off electrode (2). Save for reuse.
Figure 2-13. pH/Temperature Test