
6-23
1020NFM-1D
Section 6
Immediately after you press <ENTER>, the computer starts an internal process called an Initial Makeup.
The current Initial Makeup activity appears at the top of the display screen. For example:
Measured Vs m/s
>1470
During the Initial Makeup, the flow computer verifies your site data, records the sonic characteristics of
the pipe and then adjusts internal parameters to optimize flow measurement.
Please remain patient.
This process can take several seconds or several minutes to complete. There is no relationship be-
tween the length of an Initial Makeup and the meter’s subsequent performance. An Initial Makeup for
larger pipes (and more demanding application conditions) simply takes a little longer. Upon sucessful
completion of the initial makeup, the 1020 will show the measured Vs on the prompt line.
NOTE: In the example above, 0 indicates there were no setup rejections and Initial Makeup
was successful. If the number 6 fluctuates and/or setup rejection numbers begin count-
ing up to 9, a Detection Fault error message will appear.
3. To exit Force Transmit, press the <Left Arrow> and a Detection Fault prompt will appear. Press the
<Left Arrow> again and the meter will return to the Pick/Install Xdcr menu and highlight the [Empty
Pipe Set] menu cell.
4.
To force a frequency
, repeat steps 1 and 2 above, but press <Right Arrow>. The following typical
display line will appear:
Using numeric keys or Magnetic Wand enter the frequency and press <ENTER>.
5.
If the Force Transmit diagnostic procedure is not used
, the normal [Install Complete?] function
occurs as follows:
Drive 14
6 - - - - - - - - - - - - - -: 0
Drive
=0
This means that the flow computer was able to complete the Initial Makeup and is now actively mea-
suring flow. This prompt allows you to “fine-tune” the Measured Vs by pressing the <Right Arrow> to
activate numeric entry. You can then use the numeric keys to type a different value. However, only edit
the Measured Vs when you are certain of your liquid’s actual sonic velocity. If, however, there is a large
discrepancy between the “measured” Vs and the “actual” Vs, then consider that an accurate Vs mea-
surement depends on certain parameters that the flow computer cannot sense directly (e.g., pipe
dimensions or transducer placement). In other words, entering incorrect pipe parameters or not using
the recommended spacing could result in an erroneous Vs measurement.
The meter is now ready to report flow. Press the <ENTER> key to display flow.
Содержание SITRANS FUS1020
Страница 3: ......
Страница 206: ......
Страница 207: ......
Страница 208: ......
Страница 209: ......
Страница 210: ......
Страница 211: ......
Страница 212: ......
Страница 213: ......
Страница 214: ......
Страница 215: ......
Страница 216: ......
Страница 217: ......
Страница 218: ......
Страница 219: ......
Страница 220: ......
Страница 221: ...21614 C ...
Страница 222: ...21614 C ...
Страница 223: ...990TNHM 8 OUTLINE DIMENSIONS TRANSDUCERS TRACKS DEDICATED HYBRID MODE 21614 C ...
Страница 224: ...1011FTP 8 21614 C ...
Страница 225: ...1011FTNF 8 21614 C ...
Страница 226: ...21614 C PFA DFT FLOWTUBE INSTALLATION OUTLINE 992DFTP T 8 ...
Страница 227: ...INSTALLATION OUTLINE 992 SERIES EXTENDED FLOWTUBE 21614 C 992DFTN 8 ...
Страница 228: ......