Emerson Fisher FIELDVUE L2t Instruction Manual page 3

Instruction Manual
D104782X012
Table 1. Specifications - Housing and Sensor
Available Configuration
Sensor: Displacer‐type liquid level sensor for mounting
to side of tank. Displacer travel is transmitted to
controller by pivotal movement of displacer rod
Input Signal
Type: Liquid level or liquid‐to‐liquid interface
Level change required for full change in output signal
in a 1.0 specific gravity liquid with either vertical
displacer with standard lever arm length
Default: 71 mm (2.8 inches), user configurable if
other range desired
Minimum Span Level Change
(1)
102 mm (4 inches)
Maximum Span Level Change
(1)
305 mm (12 inches)
Minimum Specific Gravity
0.4
Output Signal
4-20 mA and two discrete switches
Reverse acting via configuration or calibration
Sensor to Vessel Connection
J 2 NPT threaded or J NPS 2 CL150 through 1500
slip‐on flange connection
Controller Connection
Case Vent: 1/4 NPT internal with vent screen
assembly located on the back of the case
Displacer Size
J
48 x 305 mm, 541 cm
(Standard) or J 70 x 203 mm, 778 cm
3
inches, 47.5 in ) (Optional)
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 - Process Instrument Terminology.
1. Any deviation from the standard construction described in the input signal specification above requires special displacer sizing considerations. Contact your
Emerson sales office for information.
2. Minimum specific gravity values apply to both horizontal and vertical displacers with standard lever arm length .
3. Converting from a threaded NPT connection to a flange connection is to be done by the end-user. Refer to Converting a Threaded NPT Connection to a Flange
Connection instruction Manual Supplement (D103277X012), available at Emerson.com or from your Emerson sales office.
4. Standard lever arm length.
5. The pressure and temperature limits in this document and any applicable code limitations should not be exceeded.
(2)
(3)
3
(1-7/8 x 12 inches, 33 in
3
(2-3/4 x 8
Maximum Displacer Insertion Length
Standard lever arm length plus one 6‐inch extension,
horizontal or vertical
Displacer Material and Maximum Sensor Working
(5)
Pressure
PVC Displacer: Consistent with CL1500 pressure
temperature ratings per ASME B16.34 up to
maximum pressure of 258 bar (3750 psig).
For PED (97/23/EC) maximum pressure limited to 200
bar (2900 psig)
S31603 SST Displacer: CL600 pressure temperature
ratings per ASME B16.34 up to maximum pressure of
99.3 bar (1440 psig)
Note: For slip‐on flange connection, maximum sensor
working pressure must be consistent with the flange
ratings
Displacer Material and Sensor Temperature
(5)
Limits
PVC Displacer: -18 to 71_C (0 to 160_F)
S31603 SST Displacer: -40 to 204_C (-40 to 400_F)
Operative Ambient Temperature Limits
Controller: -29 to 71_C (-20 to 160_F)
Declaration of SEP
Fisher Controls International LLC declares this
product to be in compliance with Article 4 paragraph
3 of the PED Directive 2014/68/EU and Part 1,
Requirement 8 of the PESR Regulation. It was
designed and manufactured in accordance with
Sound Engineering Practice (SEP) and cannot bear the
CE marking related to PED compliance or the UKCA
mark related to the PESR Regulation.
However, the product may bear the CE or UKCA
3 marking to indicate compliance with other applicable
)
European Community Directives or UK Regulations
(Statutory Instruments).
L2t Liquid Level Controller
October 2023
(4)
(5)
3