Manual Setup - Level - Emerson Rosemount 3308A Reference Manual

Configuration Parameters
August 2017
D.3.3

Manual setup - Level

Probe
Weight type
Type of weight at the end of the probe. Only applicable to the flexible single lead probe type.
Table D-4. Weight Types
Type
Unknown
Small
Short
Heavy
Chuck (anchored)
Upper null zone
Defines how close to the device's Upper Reference Point a level value is accepted. You can extend Upper
Null Zone to block out disturbing echoes close to the tank top. View the Echo Curve to find out if there
are disturbing echoes close to the tank top.
This parameter should only be changed if there are measurement problems in the upper part of the tank.
Such problems may occur if there are disturbing objects close to the probe. By setting the Upper Null
Zone, the measuring range is reduced. See
information.
168
PRELIMINARY
Option code Description
Default
W1
5.5 in (140 mm)
Ø 0.9 in (22 mm)
W2
2 in (50 mm)
Ø 1.5 in (38 mm)
W3
5.5 in (140 mm)
Ø 1.5 in (38 mm)
W4
"Changing the upper null zone" on page 103
Reference Manual
00809-0100-4308, Rev CA
for further
Configuration Parameters