Teledyne ULTRAFLOW 150, Руководство по эксплуатации, Страница: 77 / 162

SECTION 8.0, SYSTEM CALIBRATION AND ADJUSTMENT
8.0 SYSTEM CALIBRATION AND ADJUSTMENT
The calibration of the Ultraflow 150 system at the Teledyne Monitor Labs
factory consists primarily of configuring the Transducer Interface
Enclosure (TIE) and Enhanced Remote Panel (ERP) variables to
accurately represent the actual physical dimensions at the user’s site. The
relationship between these physical dimensions and the program variables
will determine the output of the analyzer. These dimensions are received
from the user on a document titled "Ultraflow 150 Installation Guide &
Checklist". The checklist is provided to each user very soon after the
purchase order for the system is received by Teledyne Monitor Labs, and
describes the information required to properly model the user's installation
site. The initial accuracy of the analyzer is dependent on the reliability of
the information provided by the user.
Most site specific program variables used to configure the system are held
in memory by a battery backed up RAM, while some are stored in Flash
memory. This allows the variables to be field modified and remain in the
microprocessor after the power is turned off. It may be necessary to
modify some variables at the users site at the time of instrument start up or
after reference method testing.
NOTE: The user must maintain adequate documentation on any
variables modified after factory calibration. In the event of any failure of
the EPROMs or RAM battery, this documentation may be the only source
of these variable values. Teledyne Monitor Labs recommends that
Appendix
A
of this manual be used to record any such changes.
8.1 TRANSDUCER INTERFACE ENCLOSURE CALIBRATION
8.1.1 Transducer Interface Enclosure Program Variables
Certain TIE program variables are responsible for the actual accuracy of
the analyzer and have a direct affect on the system calibration. These
variables can be entered through the ERP Keypad. Reference manual
section on ERP (Section 6.0) for instructions on how to access the
variables listed.
Geometry Properties:

Downstream Nozzle length.

Upstream Nozzle length

Transducer to Transducer Distance

Offset
Intrinsic Properties:

Cross Sectional Area

Geometry Units

Measurement Paths
8-1