Thermo Scientific DCT6088, User Manual

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Primary Displays & Menus
The Calibration Menu
13. Press Enter , and access the Flow/Net Totalizer primary display (00).
Reconnect the transducer wires according to their original orientation.
14. Restore the minimum and maximum flow range values (menus 31 and
32) if they were changed.
15. Allow the flowmeter readings to settle for 10 minutes.
Scale Factor
Calibration
After setting and verifying the instrument’s zero point, you can set a scale
factor to adjust the measured flow. The measured flow is multiplied by this
scale factor. For example, if the displayed flow is twice the actual flow, you
can enter a scale factor of 0.5 to divide the displayed flow by 2. The
primary reason for setting the scale factor is to compensate for
manufacturing variations in the transducers. The scale factor printed on the
transducer set should be entered in the Scale Factor setup menu (52).
Observe the following precautions when setting the scale factor:
●
Always determine the scale factor at the highest possible flow rate
achievable in order to maximize accuracy of the scale factor.
●
Use only the factory preset scale factor as marked on the transducers in
the following situations:
●
The flow cannot be stopped to verify or set the zero point.
●
A reasonably high flow rate cannot be achieved.
●
An accurate secondary flow standard is not available.
If an additional scale factor is required, the additional scale factor should be
multiplied by the factory scale factor and the result should be entered. To
enter a new scale factor, follow the steps below.
1. Access the Scale Factor setup menu (52).
Figure 5–41.
2. Enter the new scale factor and press Enter .
5-16 DCT6088 User Guide Thermo Fisher Scientific