HyQuest Solutions Pty Ltd
Point Velocity Display - Model PVD100
©
Copyright
27
Issue 1.00 4 Apr, 2007
Once entered, the USIP responds with the following Range 2 value:
2: 0.50 < n < 3.75
This is a default range and allows the user to enter the proper range shown on the
provided fan calibration certificate. Range 2 for a three equation fan rating is listed
as the second range given for the second equation listed. Refer to
Appendix D
for
an example. Again, any numbers up to 9.99 can be used for the range and only
numbers can be entered. After entering the Range 2 value, press the
<CR>
key on
the keyboard. The USIP responds with the final Range 3 value which the user is
not required to enter:
3: n > 3.75
Step 7:
After entry of the Range values, the user presses the
<CR>
key and the USIP
responds with the first rating equation for the meter:
1: 2.2048[n]+0.0178
The first number shown on the line is the rating equation number. Up to three
equations can be shown depending on the user’s response to the ‘
Number of
Equations…
’ entry. For data entry position and control, the following keys can
be used:
-
The ‘
Space bar
’ key moves the cursor position forward without changing the
number.
-
The ‘
Backspace
’ key moves the cursor position backwards without changing
the number.
-
The ‘
Enter
’ or ‘
Carriage Return
’,
<CR>
key accepts the entry and moves to
the next data entry element.
When a number is entered, the cursor automatically positions to the next number
entry position. For the sign, the USIP will only recognize the ‘
+
’ or ‘
-
‘ keys.
When the entry is completed, press the
<CR>
key to go to the next rating
equation. For any rating equation, the maximum allowable number for the first
term (slope) is 6.5535. The maximum allowable number for the second term
(intercept) is 0.9999. At the completion of the entry, pressing the
<CR>
accepts
the complete entry and displays the next equation (if there is more than one),
otherwise the USIP moves to the beginning (
Step 2
above) to choose meter ‘
B
’ or
review and make entry changes to meter ‘
A
’ or to request a Summary.
Note: Incorrect or unreasonable entries can give unexpected results
for velocity calculations. Be sure to provide the proper entries
for these ratings.
