Installation a Operation nd Handbook
User Calibration
7. Chapter 7 User Calibration
This chapter has five topics:
To understand how to select and change parameters in this chapter you will need to have read Chapter 2 -
Operation,
Chapter 3
- Access Levels
and Chapter 6
- Configuration.
7.1
What is the Purpose of User Calibration?
The basic calibration of the controller is highly stable and set for life. User calibration allows you to offset the
‘permanent’ factory calibration to either:
1. Calibrate the controller to your reference standards.
2. Match the calibration of the controller to that of a particular transducer or sensor input.
3. Calibrate the controller to suit the characteristics of a particular installation.
4. Remove long term drift in the factory set calibration.
User calibration works by introducing a single point, or two-point, offset onto the factory set calibration.
7.2
USER CALIBRATION ENABLE
The User calibration facility must first be enabled in configuration level by setting the parameter ‘
UCAL
' in the
CAL
ConF
list to '
YES
'. This will make the User calibration parameters visible in Operator ‘
FuLL
’ level. This
procedure is described in Chapter 6,
Configuration,
but for convenience is summarised below:
.
The Calibration Configuration List
Press
until you reach the ‘
CAL-Conf
’ list.
Press
until you reach
‘
UCAL
’.
User Calibration Enable
Use
or
to select:
YES
:
Calibration enable
no
:
Calibration disabled
Press
and
together to go to the
Exit
display.
Exit configuration
Use
or
to select ‘
YES
’ to return to Operator level.
•
WHAT IS THE PURPOSE OF USER CALIBRATION?
•
USER CALIBRATION ENABLE
•
OFFSET CALIBRATION
•
TWO POINT CALIBRATION
•
CALIBRATION POINTS AND CALIBRATION OFFSETS
CAL
Conf
UCAL
no
Exit
no
HA025041 issue 12 Aug 14 7-1
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