Commissioning
77
Offset
Enter offset
Activation and subsequent entry
• Act. PV 1/2
0000 ... 1500 mV
• Offset 1/2
0000 ... 1500 mV
Factory setting
Offset: 0000 mV
Act. PV:
The current measured value (primary
value) with an offset is displayed and can be
edited.
Offset:
The mV difference between the
measured value and the displayed value is
displayed and can be edited.
If you start operation with a set offset value,
"OFFSET" is shown on the top right of the
display.
Onsite calibration type
Calibration parameters
Options
• Enter data abs.
• Calibration abs.
• Enter data rel. (only
Redox/ORP: % operating
mode)
• Calibration rel. (only
Redox/ORP: % operating
mode)
Factory setting
Enter data abs.
Specify the type of calibration with which
calibration takes place when the "CAL" button
is pressed.
Enter data abs.:
Enter the electrode offset in
mV.
Calibration abs.:
Use a redox buffer
Enter data rel.:
Entry of two % calibration
points to each of which one mV value is
assigned.
Calibration rel.:
Use a detoxicated and an
unchanged sample as the buffer.
General settings
Zero point
1 ... 1500 mV
Factory setting
Function: Off
Maintenance: 10.50 pH
Failure: 11.00 pH
If the zero point deviates from the target zero
point by the value entered here, an alarm (error
no. 033) can be triggered (for error activation,
see "Set up 1 - Alarm" section).
SCC (Sensor Condition Check)
Options
• On
• Off
Factory setting
Off
This function monitors the electrode status or
the degree of electrode aging. Possible status
messages: "Electrode OK", "Low wear" or
"Replace electrode". The electrode status is
updated after each calibration. When the
"Replace electrode" message appears, an error
message may be displayed (E040, E041)..
!
Note!
This function is only available for glass
electrodes. If you combine a glass electrode and
an ISFET sensor, you can use the SCC function
without any restrictions. It only monitors the
glass electrode however.
Stability criteria
Activation and subsequent entry
• Threshold
01 ... 10 mV
• Length
03 ... 70 s
Factory setting
Threshold: 02 mV
Length: 10 s
During calibration, the mV value may change
during the given period ("duration") at
maximum by the stated amount ("threshold"),
so that the calibration is considered as stable.
You can thus individually adapt the accuracy
and time involved to your process.
Calibration timer
Calibration timer
Activation and subsequent entry
• Cal-Timer
– On
– Off
• Warning
0001 ... 9999 h
Factory setting
Cal-Timer: Off
Warning: 0001 h
If no calibration is undertaken in the set time,
an error message appears (E115).
Cal-Timer on:
Activate the timer
Warning:
Enter the time within which the
next calibration has to take place.
Time:
Displays the time remaining until the
error message (countdown).
Function
Options
Info
Содержание Topcal S CPC310
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