Tank Reference height (R)
The Tank Reference Height (R) is the distance from the hand dipping nozzle (Tank
Reference Point) to the Zero Level (Dipping Datum Plate) close to, or at the bottom of the
tank. For the Array Antenna with hinged hatch the reference point is located at the hand
dip plate as illustrated in
Gauge Reference distance (G)
The Gauge Reference Distance (G) is measured from the Gauge Reference Point to the
Tank Reference Point, which is located at the top surface of the customer’s flange or
manhole cover on which the level gauge is mounted as illustrated in
.
For the hinged hatch version of the Rosemount 5900S with Array Antenna, the Tank
Reference Point and the Gauge Reference Point are located at the same position i.e. at the
hand-dip plate on the Still Pipe Gauge Stand as illustrated in
.
Set G=0 for the Rosemount 5900S with Array Antenna hinged hatch version when using
the hand dip plate as the Tank Reference Point (see
).
G is positive if the Tank Reference Point is located above the Gauge Reference Point.
Otherwise G is negative.
Figure 4-3: Definition of Gauge Reference Distance
A
B
G>0
G<0
A.
Tank Reference Point
B.
Gauge Reference Point
Minimum Level Offset (C)
The Minimum Level Distance (C) is defined as the distance between the Zero Level
(Dipping Datum Point) and the Minimum Level of the product surface (tank bottom). By
specifying a C-distance, the measuring range can be extended to the bottom of the tank.
If C>0, negative level values will be displayed when the product surface is below the Zero
Level. Select the
Show negative level values as zero
check box in
Rosemount TankMaster
WinSetup
if you want levels below the Zero Level to be displayed as Level=0.
Measurements below the Zero Level will not be approved if the C-distance=0, i.e. the
Rosemount 5900S will report an invalid level.
Configuration
Reference Manual
September 2019
00809-0100-5900
104
Reference Manual
Summary of Contents for Rosemount 5900S Series
Page 1: ...Reference Manual 00809 0100 5900 Rev EA September 2019 Rosemount 5900S Radar Level Gauge ...
Page 6: ...Contents Reference Manual September 2019 00809 0100 5900 vi Reference Manual ...
Page 12: ...Introduction Reference Manual September 2019 00809 0100 5900 12 Reference Manual ...
Page 182: ...Configuration Reference Manual September 2019 00809 0100 5900 182 Reference Manual ...
Page 186: ...Operation Reference Manual September 2019 00809 0100 5900 186 Reference Manual ...
Page 266: ...Product Certifications Reference Manual September 2019 00809 0100 5900 266 Reference Manual ...