
5.8
Run verify level
The Verify Level tool matches the product level reported by the device to a reference
measurement (for example hand-dipping with a measurement tape).
If any difference, the Calibration Offset parameter will be adjusted. A minor adjustment
using Calibration Offset is normal. There may, for example be a deviation between the
actual tank height and the configured value.
Verify Level may also be run in an empty tank. Besides the offset calibration, it includes
some setup of the signal processing such as registration of disturbance echoes.
Prerequisites
Ensure that:
•
The product surface is calm.
•
The tank is not being filled or emptied.
•
The actual level is well above the tank bottom.
Procedure
1. Select
Configure
→
(Guided Setup)
→
Verify Level
.
2. Follow the on-screen instructions.
Related information
5.9
Multidrop communication
Multidropping transmitters refers to the connection of several transmitters to a single
communications transmission line. Communication between the host and the
transmitters takes place digitally with the analog output of the transmitters deactivated.
5.9.1
Establish multidrop communication
In multidrop communication, each transmitter in the loop must have a unique HART
address.
Procedure
1. Select
Configure
→
(Manual Setup)
→
Device Setup
→
HART
.
2. Select
Change Address
(not applicable to Rosemount Radar Master Plus).
3. Enter the desired HART address.
4. Ensure that
HART Multidrop
is selected.
5.10
Use with the Rosemount 333 HART
®
Tri-Loop
™
To prepare the transmitter for use with a Rosemount 333 HART Tri-Loop, the transmitter
must be configured to Burst Mode and the process variable output order must be set.
Reference Manual
Configuration
00809-0100-4418
September 2022
Rosemount 3408 Level Transmitter
43