Data Sheet

Level Instruments
D103219X012
Product Bulletin
11.2:Level
February 2015
7
L2sj Liquid Level Controllers
Designed for use with Natural Gas... The L2sj controller
is intended for use with natural gas as the pneumatic
supply.
Reduced Carbon Footprint... Low‐bleed relay helps to
conserve natural gas to reduce greenhouse gas
emissions.
Reduced Operating Costs, Increased Revenue...
Integral action relay with rugged metal seats requires
less maintenance and provides more dependable
liquid level control, which can improve uptime.
Reduced emissions result in an increase in natural gas
available to the sales line.
Figure 8. Fisher L2sj Liquid Level Controller
W9331
Fisher 249 Sensors
249 sensors, in conjunction with either DLC3010/
DLC3020f digital level controllers or 2500 controllers
and transmitters, are designed to measure changes in
liquid level, liquid interface level, or density/specific
gravity inside a process vessel.
249 level sensors are available in both caged and
cageless configurations, as shown in the table below.
Caged sensors provide more stable operation than do
cageless sensors for vessels with internal obstructions
or considerable internal turbulence. Cageless sensors
are generally used on applications requiring large
displacers that are accommodated by large flange
connections. Different displacer stem lengths permit
lowering the displacer to the desired depth.
Refer to table 4, 5, 6, 7, 8, and 9 for product line
capabilities and options.