Emerson Fisher L2e Instruction Manual page 3

Instruction Manual
D103531X012
Table 1. Specifications
Available Configurations
Controller: Differential gap (DG) electric control
action with intuitive Zero and Span Adjustments in
SPDT dry contact configuration (refer to page 2 for
differential gap description)
Sensor: Displacer­type liquid level sensor for
mounting to side of vessel
Input Signal
Type: Liquid level or liquid­to­liquid interface
Level Change Required for Full Change in State of
Output: 5.0 to 305 mm (0.2 to 12 inches)
Vessel level DG is dependant on factors such as valve
sizing, actuator speed, rate, liquid out flow, and
vessel size. Contact your
Business Partner for Fisher Electric Level Loop
performance optimization.
Specific Gravity Limits
Minimum SG: 0.15
Maximum SG
PVC Displacer: 1.3
SST Displacer: 1.1
Electrical Rating (Output)
J easy-Drive™ actuator application: 7 mA@5 VDC
J Other applications: 1 amp resistive, 0.5 amp
inductive/28 VDC
Note: Use with easy-Drive after first being used in
other high power application is not recommended.
Power Consumption
Switch consumes no power to operate, so it has no
current leakage or voltage drop
Sensor to Vessel Connection
J 2 NPT threaded or J NPS 2 CL150 through 1500
slip­on flange connection
Controller Connection
Electrical 1/2-14 NPT external conduit connection
with 18 inches of 18 AWG lead wires, located at the
bottom of the case
Emerson sales office or Local
(1)
Displacer Sizes
J 48 X 305 mm, 541 cm
J 76 X 152 mm, 688 cm
Maximum Displacer Insertion Length
or Vertical
1-7/8 x 12 Displacer with one 6-inch extension
(optional use)
3 x 6 Displacer with one 3-inch extension
(optional use)
Displacer Material and Maximum Sensor Working
(3)
Pressure
PVC Displacer: Consistent with CL1500 pressure
temperature ratings per ASME B16.34 up to
maximum pressure of 258.5 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 slip­on flange connection, maximum sensor
working pressure must be consistent with the flange
ratings
Operative Ambient Temperature Limits
Controller: ­40 to 75°C (­40 to 167°F)
Operative Process Temperature Limits
Sensor:
J PVC Displacer: -18 to 71°C (0 to 160°F)
J S31603 SST Displacer: ­40 to 204°C (­40 to 400°F)
Construction Materials
Controller
Case and Cover: Marine grade aluminum
Switch: Stainless steel
Span Levers: Stainless steel
Springs: Stainless steel
Sensor
Sensor Body: LCC
O­Rings: Fluorocarbon
Pivot Assembly: Stainless steel
Displacer: J Polyvinylchloride (PVC) or J S31603 SST
Sensor Spring: Stainless steel
-continued-
L2e Controller
May 2017
3
(1­7/8 X 12 inches, 33 in
3 3
(3 X 6 inches, 42 in )
(2)
, Horizontal
(3)
(3)
3
)
3