Sage SIE Series, Руководство по эксплуатации и инструкция

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O p e r a t i o n s a n d I n s t r u c t i o n M a n u a l
47
S A G E M E T E R I N G , I N C .
REV. 03-SIE/SRE
201 Rate Prec—The number of decimal points for the flow
rate (top line) reading (max 3).
202 Total Prec—The number of decimal points for the total
display (bottom line) reading (max 2).
210 Max Val—Full Scale Setting.
a) This value will recalculate when engineering units are
changed. For example, 1000 SCFM Full Scale becomes
60,000 SCFH if the engineering units are changed to
SCFH (the change will be observed after the meter is
put into “Flow Mode” (the normal mode [100 on lap-
top, or Keypad Shortcut (hold “Forward/Up,” then
press “Flow/Shift”]).
b) This value will also recalculate if pipe area is changed.
For example, a Full Scale of 100 SCFM in a 6" pipe
(.2006 sq. ft.) will have a new full scale of 173.2 SCFM
in an 8" pipe (.3474 sq. ft.).
c) At any time you can change the Max Val (Full Scale
Value) below the original Full Scale Value, adjusted
for the new Engineering units, or below the Full Scale
value adjusted for the new pipe area. If you do so,
you will have a new lower Full Scale (i.e., the new
Value will equal 20mA), and the display will be limit-
ed to that value. This change has the effect of lower-
ing the range of the meter. You can raise the Full
Scale Value higher than the original calibration value,
but in that case the readings may be less accurate (see
footnote 3 on page 44). (Note: The original calibra-
tion value is noted on the Certificate of Confor -
mance.) In some cases the calibration value may be
higher, if for example there is some uncertainty as to
the proper Full Scale Value. For example, a customer
may request a Full Scale Value of 100 SCFM, but Sage
may add an extra 20% of calibration data (to 120
SCFM). In that case, the Full Scale Value can be
changed up to 120 SCFM.
d) This value will also recalculate when a K-factor (item
304) is entered. For example, a K-factor of .8 will
cause a Full Scale of 100 SCFM to become 80 SCFM.
Be careful, however. You will generally want to restore
the Full Scale setting back to 100 SCFM by manually
changing item 210 back to 100 SCFM, so that 100 SCFM
will still report an output of 20mA (see item 304
descrip tion). Otherwise, when the display reads 80
SCFM, the output will read 20mA instead of 16.8mA.
211 Min Cutoff—If it is desired to “force” the meter flow rate
to read zero, even if there is a small amount of flow (such
as a leak, some gas convection, higher zero pressure then
specified), then simply select a value. If for example, your
meter is calibrated from 0 to 100 SCFM, by putting a
value of 5 in item 211, any flow up to, or equal to 5
SCFM will display 0 (zero), and thus the totalizer will not
advance. As soon as the actual flow ex ceeds 5 SCFM, nor-
mal operation is restored. This setting does not affect the
4–20mA output. It still reads normally.
Note, for the SRE
style meters, there is only one set of 4-20 mA terminals.
These terminals can be configured either for Flow Out -
put or Temperature. If an exact value of 0 is entered
in item 211, the output will be a Temperature output
(i.e., 0.000). However, any other value (i.e., 0.001) will
result in a Flow output.
Menu Item Descriptions
(SEE PAGES 43 AND 44)
220 Temp Deg—This controls whether the displayed tempera-
ture reads in Fahrenheit or Centigrade. If “0” is selected,
the temperature reading will always be blank. (Note:
The temperature readying will also blank if the totalizer
exceeds a value that requires 7 digits (i.e., 99999.9 or
9999999). The next count will cause the entire tempera-
ture display to blank. (The temperature will be restored
once the totalizer is reset, or if the totalizer “rolls over”
[exceeds 12 digits]).
221 Temp Max—The Full Scale of the temperature. Example
200˚F=20mA.
222 Temp Min—Example 40˚F=4mA.
230 LCD Address—Factory Only.
303 Zero Offset—Factory Only.
304 K-Factor—1) Used to bias the readout. For example, if
meter reads 100, and customer feels 102 is correct, then
change K-Factor to 1.02
K-Factor—2) Used to correct gravimetric units (such as
LBS/Min, Kg/Sec, etc.) for gases other than Air. Put in
the specific Gravity of the gas. For example, for Nitrogen,
use 1.037
K-Factor—3) Can be used to correct for for a different
Pipe Area than the meter’s original set up. For example,
if calibrated initially in a 4" Schedule 40 Pipe (.0884 sq.
ft.), and then re-installed into a 6" Schedule 40 Pipe
(.2006 sq. ft.), enter a K-factor to 2.269 (original factory
K-factor was 1.000). Note 2.269 = .2006/.0884. Normally,
you’ll use item 305 for a pipe change
NOTE: THE K-FACTOR IN THE ABOVE EXAMPLES WILL
NOT ONLY BE REFLECTED IN THE DISPLAY, BUT ALSO
IN THE 4-20 ma OUTPUT
305 Pipe Area—The pipe area must be changed any time the
meter is inserted into a different pipe than originally
specified (except for velocity units, such as “SFPM”). For
example, if the original pipe area was .2006 square feet
(for a 6" Sch 40 pipe), and you decide to insert the meter
in an 8" Sch 40 pipe, change the pipe area to .3474
square feet so the SCFM, (or other flow units) will read
correctly. This will also change the Full Scale (see “210–b”
description). It is best to "Save" (Item 100) immediately
after changing pipe area.
306 DO NOT USE (Unless you have Rev. 2.045).
307
1
Reset Total—You can reset the totalizer to zero. Note: by
enabling item 720 (Ext Zero Enable), you can reset the
totalizer externally. That is, you can reset the totalizer
with a contact closure (terminals 15 and 17 on SIG or
SRG). It is recommended that you Reset Total if engineer-
ing units are changed (i.e. from SCFM, or vice versa, or
when channels (calibrations) are changed.
308–311 Factory Only.
330 Factory Only.
400 Change Engineering Units 2
.
503 Avg Flow—View the average flow for the past hour.
504 View the average temperature for the past hour.
1 The Totalizer, as well as Trip High and Trip Low Values (items 510 to 522) need to be reset if the channels
are changed (see Menu items 307 and 530) if you want to clear those readings.
2 The Totalizer (Item 307) should be reset in some cases (i.e. LBS. to SCF or vice versa).