wtw pH/ION 7320, Operating Manual

Page: 68 / 104

Settings pH/ION 7320
68
ba75935e04 12/2017
9.1.2 Buffer sets for calibration
You can use the buffer sets quoted in the table for an automatic calibration. The
pH values are valid for the specified temperature values. The temperature
dependence of the pH values is taken into consideration during the calibration.
Limit monitoring /
pH monitoring
On
Off
Switch on or off the limit signaling
device for the pH value.
Limit monitoring /
TP monitoring
On
Off
Switch on or off the limit signaling
device for the temperature value.
Limit monitoring /
pH monitoring
/
On /
pH upper limit
-2 ... 20 Upper limit. A message is output to
the USB interface if it is exceeded.
This menu item is only visible when
the
pH monitoring setting is active.
Limit monitoring /
pH monitoring
/
On /
pH lower limit
-2 ... 20 Lower limit. A message is output to
the USB interface if it is exceeded.
This menu item is only visible when
the
pH monitoring setting is active.
Limit monitoring /
TP monitoring
/
On /
TP upper limit
-5 ... +105 °C Upper limit. A message is output to
the USB interface if it is exceeded.
This menu item is only visible when
the
TP monitoring setting is active.
Limit monitoring /
TP monitoring
/
On /
TP lower limit
-5 ... 105 °C Lower limit. A message is output to
the USB interface if it is exceeded.
This menu item is only visible when
the
TP monitoring setting is active.
Reset - Resets all sensor settings to the
delivery condition (see section
9.4.1 R
ESETTING THE MEASUREMENT
SETTINGS
, page 76).
No. Buffer set * pH values at
1 ConCal Any Any
2 NIST/DIN
DIN buffers according to DIN 19266
and NIST Traceable Buffers
1.679
4.006
6.865
9.180
12.454 25 °C
3 TEC
WTW Technical buffers
2.000
4.010
7.000
10.011 25 °C
Menu item Possible set-
ting Description