Honeywell RM640, Руководство пользователя

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6
OPERATION
88
RM640
www.honeywellprocess.com 34-VF-25-131 iss.1 GLO Feb 2019 US
C1.10 Reference
Offset
Offset relating to a reference location
(distance). This value is positive when the
reference location is above the device flange
face and negative if below. For more data,
refer to
Distance measurement
on page
105.
Minimum access level to change the
Minimum access level to change the Minimum access level to change the
Minimum access level to change the
setting: setting: setting: setting: Expert
min-max:
-5000.0+0 … +5000.0 m /
-
196.85
+03
...+196.85
+03
¨ /
-16404...+16404 ft
0 m / 0 ft
C1.11 Tank Bottom
Offset
Offset relating to a reference location
(level). The device reference point for this
parameter is the bottom of the tank (set in
menu item C1.2 Tank Height). This value is
positive when the reference location is
below the tank bottom and negative if above.
For more data, refer to Level measurement
on page 107.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting:
setting: setting:
setting: Expert
min-max:
-5000.0+0 … +5000.0 m /
-
196.85
+03
...+196.85
+03
¨
/
-16404...+16404 ft
0 m / 0 ft
C2 Process
C2.1 Tracking
Velocity
This menu item sets the maximum rate of
change of level in metres per minute or feet
per minute. The measured value cannot
change faster than the tracking velocity.
Minimum access level to change the
Minimum access level to change the Minimum access level to change the
Minimum access level to change the
setting: setting: setting: setting: Expert
min-max:
1.2
-03
… 60.0 m/min /
3.94
-03
...196.85 ft/min
500
-03
m/min /
1.64042 ft/min
C2.2 Epsilon R
Product
The device automatically calculates the
level based on the product
ε
r
. If you select
"TBF Full" or "TBF Auto" in menu item C2.4
Measuring Mode, you can change this value
manually to adjust readings.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting:
setting: setting:
setting: Expert
1.1...20 2.0
C2.3 Epsilon R Gas A major parameter for radar level
measurement devices. This can be
applicable to high pressure applications or
tanks that contain a specified gas. If the gas
is not 1.0, set the
ε
r
value to the
ε
r
value of
the gas.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting:
setting: setting:
setting: Expert
1.0...20 1.0
C2.4 Measuring
Mode
This menu item is set by default to "Direct
Measuring" to measure the level of most
tank contents. The device uses the largest
radar signal to monitor level. If it is possible
there will be an interference signal in the
measurement zone that is larger than the
level signal, select "Direct Plus" mode. If
you select "Direct Plus" mode, the device
locks on the level signal and monitors
changes in level. If the device then finds
larger reflections in the silo, it will only
monitor the largest signal in a small search
zone around the first reflection found and
ignore all other reflections. The
interference signal must not be near to the
level signal. Refer also to "Measuring
principle" on page 129.
Minimum access level to change the Minimum access level to change the Minimum access level to change the Minimum access level to change the
setting: setting: setting: setting: Expert
Direct, Direct Plus Direct
Menu No. Function Function description Selection list Default