Data Sheet

DLC3010 Digital Level Controller
D102727X012
Product Bulletin
11.2:DLC3010
August 2014
10
249 Level Sensors Specifications
Input Signal
Liquid Level or Liquid-to-Liquid Interface Level:From 0
to 100 percent of displacer length
Liquid Density: From 0 to 100 percent of
displacement force change obtained with given
displacer volume—standard volumes are
J 980 cm
3
(60 inches
3
) for 249C and 249CP sensors or
J 1640 cm
3
(100 inches
3
) for most other sensors;
other volumes available depending upon sensor
construction
Sensor Displacer Lengths
See tables 4 and 5 footnotes
Sensor Working Pressures
Consistent with applicable ASME
pressure/temperature ratings for the specific sensor
constructions shown in tables 4 and 5
Caged Sensor Connection Styles
Cages can be furnished in a variety of end connection
styles to facilitate mounting on vessels; the
equalizing connection styles are numbered and are
shown in figure 7.
Mounting Positions
Most level sensors with cage displacers have a
rotatable head. The head may be rotated through
360 degrees to any of eight different positions, as
shown in figure 8.
Construction Materials
See tables 2, 4, and 5
Operative Ambient Temperature
See table 3.
For ambient temperature ranges, guidelines, and use
of optional heat insulator, see figure 2.
Options
J Heat insulator, see description under Ordering
Information
J Gauge glass for pressures to 29 bar at
232_C (420 psig at 450_F), and
J Reflex gauges for
high temperature and pressure applications
249 Level Sensors
249 level sensors used with the DLC3010 digital level
controller are available in both caged and cageless
configurations. Figure 6 shows a DLC3010 mounted on
a caged 249 sensor. 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
specific gravity and interface control applications
requiring large displacers that are more easily
accommodated by flange connections up to 8 inches.
The availability of many different displacer stem
lengths permits lowering the displacer down to the
most advantageous depth in the vessel.
Figure 6. FIELDVUE DLC3010 Digital Level Controller
and Fisher 249B Level Sensor
W7926