Process Calibration Procedure - ABB Navigator 500 Series Operating Instructions Manual

Navigator 500
Sodium analyzer

5.5.4 Process calibration procedure

The process calibration procedure can be used to make minor
adjustments to the concentration value. When a process
calibration procedure has been run and has completed, a
Process Calibration (PC) offset is calculated. Subsequently, the
displayed concentration has this offset in concentration
subtracted from the measured sodium concentration.
The following steps describe how to take a sample from the
wet-section for independent tests and adjust the sodium
concentration reading accordingly. If the sodium concentration
is already known, steps 1 and 10 can be omitted.
Note.

Process calibrations should be used only to make
minor adjustments to the concentration value. If the
displayed concentration differs significantly from the
expected concentration, perform a Two-Point
calibration from the Calibrate level – see Section
7.1.1, page 43.

A process calibration can be carried out only on
single-stream and multi-stream wet-sections with 1
stream enabled.
To run a Process Calibration procedure:
1. Obtain a clean sample vessel of suitable size for the
volume of sample required.
At the transmitter:
2. Press the key (below the
Navigator
Tag 1
2.93
21.7 21.7
Na
The Operator menus are displayed:
Navigator
Operator Pages
4.28 4.28
Data Views
Logs
Alarm Acknowledge
Manual Hold
21.7 21.7
Autoscroll
Media Card
Enter Configuration
OI/ASO550–EN Rev. G
icon).
10 : 34: 52
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ppb
°C
CAL
10 : 34: 52
2012–04–15
ppb
°C
3. Press the key to select the Enter Configuration menu
and press the key (below the
The Access Level page is displayed:
Access Level
Read Only
Calibrate
Advanced
Service
Back
4. Use the key to scroll to the Advanced access level
and press the key (below the Select prompt) to enter
the top level Configuration menus.
5. If the Calibrate page is not displayed, use the
keys to scroll to the Calibrate page:
Menu
Calibrate
Exit
6. Press the key (below the Select prompt).
– If one or more single-stream wet-sections are
connected, the Calibrate / Sodium 1 (2, 3, 4) page is
displayed:
Calibrate
Sodium 1
Back
– If a multi-stream wet-section is connected, the
Calibrate / Sodium Three Stream page is displayed:
Calibrate
Sodium Three Stream
Back
5 Calibration
icon).
Select
/
Select
Select
Select
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