model 2704 controller installation and operation handbook - Soliton

2704 Controller Transducer Scaling
Set the strain gauge bridge to its ‘zeroed’ condition
8. Press as many times
as necessary to scroll to
Scale Low
This will normally be zero
9. Press or to
enter the low end
calibration value
10. Press to scroll to
Scale High
11. Press or to
enter the high end
calibration value
In this example a value of
8000 is chosen which
may represent 80% of the
0 -10,000psi range of a
pressure transducer.
12. Press to scroll to
Start Pnt 1 Cal
13. Press or to
enter On
This parameter can be
configured to be initiated
from a digital input and
wired, for example, to an
external switch. If this
has been configured this
parameter can be turned
on from this source.
- Tip: To backscroll hold down and press
The controller automatically performs the procedure described in Section 19-2. During this
time the Cal Active parameter will change to On. When this parameter value changes back to
Off the calibration is complete.
The Shunt State parameter will also change during the procedure to show when it is being
connected (On = connected, Off = disconnected).
Note:-
It is possible to start the calibration procedure before the system has settled at a stable value.
The controller continuously takes blocks of 50 samples. When the average value between
two consecutive blocks is within the ‘Threshold Value’ the controller will then calibrate.
The Threshold Value defaults to 0.5 but can be adjusted in configuration level. If the
readings are not stable within this period the controller will abort the calibration.
Installation and Operation Handbook. Part No HA026502 Issue 1.0 Apr-00 19-5