28
6. OPERATIONAL GUIDE
6.1. PROBE CALIBRATION
The probe should be calibrated:
• Before installing the probe in the system.
• After probe replacement.
• Daily when greatest accuracy is required.
• Every 2 weeks along with routine maintenance.
Every time you calibrate the monitor use fresh buffer standards and perform electrode maintenance
as required. It is advised to choose calibration buffers that bracket the sample pH.
Two calibration modes are available for pH and EC:
• Quick calibration: easily accessible from MENU, allows simultaneous single point calibrations
for pH and EC using quick calibration solution.
• Standard calibration: accessible from pH or EC Menu; allows pH calibration with one
or two buffers (from 3 eligible pH values: 4.01; 7.01; 10.01) and a single EC calibration
point (with standards 1.41 mS/cm or 5.00 mS/cm).
Preparation
Pour small quantities of the buffer solutions into clean beakers. If possible, use plastic beakers to
minimize any EMC interferences. For accurate calibration and to minimize cross‑contamination, use
two beakers for each buffer solution: one for rinsing the probe and one for calibration.
6.1.1 QUICK CALIBRATION
For quick calibration use
HI5036
quick calibration solution (
HI50036P
sachets or
HI5036‑050
500 mL bottle).
Submerse the probe a minimum of 4 cm (1½”) into the solution and stir gently.
Select
Quick Calibration
from
MENU
.
Press
Start
and monitor enters in
Quick Calibration
screen.
When the standard value is recognized and stability is reached
the monitor automatically accepts the calibration.
OPERA
TIONAL GUIDE