Xylem MULTI 3500i HANDHELD MULTIPARAMETER METERS - Manual (Page 31)

Multi 3500i Operation
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4.4.4 Settings for pH and ORP measurements
Overview The following settings are possible for pH and ORP measurements:
z Resolution
z Calibration interval
z Buffers for calibration
z Unit for slope
z Calibration record (display)
Settings The settings are made in the measuring menu of the pH/ORP measure-
ment. To open the settings, activate the relevant measuring window in
the measured value display and press the
Menu item Possible
setting Description
Calibration /
Calibration inter-
val 1 ... 999 d Calibration interval for the pH elec-
trode (in days).
The measuring instrument reminds
you to calibrate regularly by the
flashing sensor symbol in the mea-
suring window.
Calibration /
Calibration type TEC
NIST/DIN
ConCal Buffer sets to be used for pH cali-
bration.
For details, see section 4.4.5.
Calibration / Unit
for slope mV/pH
% Unit of the slope.
The % display refers to the Nernst
slope of
-59.16 mV/pH (100 x determined
slope/Nernst slope).
Calibration /
Calibration
record - Displays the calibration record of
the last calibration.
Man. tempera-
ture -20 ...
+130 °C Entry of the manually determined
temperature. For measurements
without temperature sensor only.
Reset - Resets all sensor settings to the
delivery condition (see
section 4.10.1).
High resolution On
Off Resolution of the pH display:
On = 0.001
Off = 0.01