Data Sheet

www.Fisher.com
Fisher
r
L2sj Low Emission Liquid Level
Controller
The rugged Fisher L2sj low emission liquid level
controller uses a displacer type sensor to detect liquid
level. This controller features a rugged, low emission
proportional relay with integral action. The device
delivers a direct acting on-off pneumatic output signal
to a control/dump valve.
Features
n Designed for use with Natural Gas—The L2sj
controller is intended for use with natural gas as the
pneumatic supply.
n Increased Revenue—Reduced emissions result in an
increase in natural gas available to the sales line.
n Reduced Operating Costs—Integral action relay with
rugged metal seats requires less maintenance and
provides more dependable liquid level control,
which can improve uptime.
n Reduced Carbon Footprint—A low-bleed relay
helps to conserve natural gas to reduce greenhouse
gas emissions. The relay provides a steady state
consumption rate that is less than the 6 scfh
requirement set for the oil and gas industry by the
US Environmental Protection Agency (New Source
Performance Standards Subpart OOOO,
EPA-HQ-QAR-2010-0505).
n NACE Service Ready—Sensor and vessel connection
complies with the requirements of NACE
MR0175-2002.
W9331
n Ease of Field Setup—Simplified dry and wet setup
and adjustments. Setup and Adjustments illustrated
inside L2sj cover as shown in figure 1.
n Field-Configurable Vertical or Horizontal
Displacer—Displacer may be adjusted in the field for
vertical or horizontal operation without additional
parts.
n Vibration Resistant Sensor Dynamics— O-Ring
friction and process pressure sensitivity are
minimal. Performance stays constant with process
pressure changes and controller remains vibration
resistant.
n Low Supply Pressure—Can operate down to 0.34 bar
(5 psi) instrument supply pressure for coal seam
applications.
L2sj Controller
D103229X012
Product Bulletin
34.2:L2sj
July 2014