Preparation For Use; Notes About Calibration; A) General; B) Percentage Of Slope (Pts) - VOLTCRAFT PHT-600 Bedienungsanleitung

b) Preparation for Use
Unscrew the soaker bottle (11) cap
•
by turning it counter clockwise, then
remove it.
• Slide the cap off the probe and set
it aside. Try not to spill any soaker
solution.
• Rinse the electrode with clean distilled
water and blot it dry using a non
abrasive lint free cloth.
Connect the BNC connector (8) to the socket (6) on the meter.
•

10. Notes about Calibration

a) General

• The characteristics of your electrode will change over time. By measuring buffer solutions of
known pH values, you can calibrate your meter to the electrode.
• The meter supports 5 pre-programmed standard pH buffers (1.68, 4.01, 7.00, 10.01, 12.45)
pH 1.68 and 12.45 buffer solutions are not included.
• These 5 standard buffer solutions will automatically be recognized by the meter if used.
• Up to 3 slope points can be taken for calibration:
- pH 7 (necessary)
- pH 4.01 or 1.68 (one point below pH 7)
- pH 10.01 or 12.45 (one point over pH 7)
• Use a suitable thermometer (not included) to measure the temperature.
• A manual temperature compensation "MTC" should be entered on the meter to match the
buffer and testing solution temperature.

b) Percentage of Slope (PTS)

After the second and third calibration points, a percentage of slope (PTS) value will be given:
• <70 % (replace electrode)
• >130 % (replace electrode)
• 100 % (ideal)
30