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Quick Start Guide
Transmitter bottom reference
This is the transmitter's
vertically along the ultrasonic beam path from the User Preferred Sensor Reference
Point (UPSRP) to the Zero Level of a tank or an open channel
The zero level establishes where the transmitter starts to measure the process value. It
is not necessary to have the 4 mA output start at the zero level, and the 4 mA starting
pointing can be any liquid height above or below this zero level.
Note
This parameter is important for calibrating and configuring the transmitter.
Field Communicator or AMS
To view or change the bottom reference:
1. From the Home screen, select
2. Select
2: Manual Setup
3. Select
1: Basic Setup
4. Select
2: Bottom Reference P010
5. Input the new bottom reference,
and press "
6. Press "
SEND
Rosemount 3490 Series Control Unit
To view or change the bottom reference:
1. From the Main Menu screen, select
2. Select the transmitter (e.g. "
3. Select
DUTY
4. Follow the on-screen instructions to input
and save the new setting.
12
Bottom Reference
2: Configure
.
.
" to save it.
ENTER
" to update the transmitter.
Tx1: 3107
, and then select
Bottom Ref
setting. It is the distance measured
Bottom Reference P010
40.000 ft
40.000 ft
.
q
a
Lock
Shift
z
.
HELP
(Field Communicator screen)
Bottom Ref.
.
SETUP
Esc=Quit
").
(Rosemount 3491 screen)
.
(Figure 10 on page
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.
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d
f
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+
0
DEL
ESC
P010
40.000ft
=Edit
July 2016
13).
7
8
9
4
5
6
FN
1
2
3
ENTER
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