XS Instruments 70 Serie Manuel D'utilisation page 17

 Move with the keys
The table below shows the setup menu structure for the pH parameter, and for each program the options
that the user can choose and the default value:
Program
P1.1 CAL BUFFER SELECT
P1.2 SELECT RESOLUTION
P1.3 STABILITY FILTER
P1.6 CALIBRATION DATA
P1.7
SET DUE CAL
P1.8 RESET SETTINGS
P1.9 TEMPERATURE CAL
P1.1 pH buffer selection
Access this setup to select the buffer family for performing the electrode calibration.

Calibration lines from 1 to 3 points can be made.
During calibration, press
paragraph). The instrument automatically recognizes 2 families of buffers (USA and NIST); in addition, the
user has the option of performing a manual calibration of up to 2 points
with customizable values.
USA Buffers: 1,68 - 4,01 - 7,00** - 10,01 - 12,45 (Factory setting)
NIST Buffers: 1,68 - 4,00 - 6,86** - 9,18 - 12,46
**Neutral point always requested as first
In measure mode at the bottom left of the display, a series of beakers
indicates the buffers with which the last automatic and manual
calibration was carried out.
P1.2 Resolution
Access this menu to choose the resolution needed, when reading the
pH parameter:
0.1

0.01 -default-

P1.3 Stability criterion in pH measurement
To consider the reading of a value truthful, we recommend waiting for the measurement stability, indicated
by the icon . When the measurement is not stable, four red flashing bands
Access this menu to change the measurement stability criterion:
"LOW": choose this option to bring up the stability icon
Readings included within 1.2 mV.
"MEDIUM" (default value): readings included within 0.6 mV.
"HIGH": choose this option to display the stability icon only in conditions of high measurement stability,
readings included within 0.3 mV.
P1.6 pH calibration data
Access this menu to get information about the last calibration performed. The following screens will
automatically scroll on the display:
 First screen: CALIBRATION DATE and TIME and beakers indicating the buffers used.
 Second screen: OFFSET value of the electrode expressed in mV.
Third and possibly fourth screen: Slope% in the measuring range (one Slope% only if two calibration

points are performed, two Slope% if three points are performed).
Note: The instrument accepts calibrations with pH electrodes with Slope% between 80 - 120% only.
UM Serie 70Vio EN rev. 1 04.06.2020
and to select the program to access.
Description
USA – NIST – Custom
0.1 – 0.01
LOW – MEDIUM - HIGH
-
NO – HOURS - DAYS
YES – NO
YES – NO
to exit and save the points calibrated up to that moment (see calibration
16
Options Factory Default Settings
Beaker
pH value of the buffer
6.5 ~ 7.5
appear on the display.
even in conditions of poor stability.
EN
USA
0.01
MED
-
NO
NO
-
Acid
< 6.5
Neutral
Basic
> 6.5