Quick Start Guide

Quick Start Guide
D103214X012
DLC3010 Digital Level Controller
September 2014
37
Table 6. DLC3010 Digital Level Controller Specifications (continued)
Minimum Differential Specific Gravity
With a nominal 4.4 degrees torque tube shaft
rotation for a 0 to 100 percent change in liquid level
(specific gravity=1), the digital level controller can be
adjusted to provide full output for an input range of
5% of nominal input span. This equates to a minimum
differential specific gravity of 0.05 with standard
volume displacers.
See 249 sensor specifications for standard displacer
volumes and standard wall torque tubes. Standard
volume for 249C and 249CP is ∼980 cm
3
(60 in
3
),
most others have standard volume of ∼1640 cm
3
(100 in
3
).
Operating at 5% proportional band will degrade
accuracy by a factor of 20. Using a thin wall torque
tube, or doubling the displacer volume will each
roughly double the effective proportional band.
When proportional band of the system drops below
50%, changing displacer or torque tube should be
considered if high accuracy is a requirement.
Mounting Positions
Digital level controllers can be mounted right‐ or
left‐of‐displacer, as shown in figure 5.
Instrument orientation is normally with the coupling
access door at the bottom, to provide proper
drainage of lever chamber and terminal
compartment, and to limit gravitational effect on the
lever assembly. If alternate drainage is provided by
user, and a small performance loss is acceptable, the
instrument could be mounted in 90 degree rotational
increments around the pilot shaft axis. The LCD meter
may be rotated in 90 degree increments to
accommodate this.
Construction Materials
Case and Cover: Low‐copper aluminum alloy
Internal: Plated steel, aluminum, and stainless steel;
encapsulated printed wiring boards; Neodymium Iron
Boron Magnets
Electrical Connections
Two 1/2‐14 NPT internal conduit connections; one on
bottom and one on back of terminal box. M20
adapters available.
Options
J Heat insulator. See description under Ordering
Information.
J Mountings for Masoneilant,
Yamatake and Foxborot/Eckhardt displacers
available.
J Level Signature Series Test (Performance
Validation Report) available (EMA only) for
instruments factory‐mounted on 249 sensor.
J Factory Calibration: available for instruments
factory‐mounted on 249 sensor, when application,
process temperature and density(s) are supplied.
J Device is compatible with user‐specified remote
indicator.
Operating Limits
Process Temperature: See table 9 and figure 8
Ambient Temperature and Humidity: See below
Conditions
Normal
Limits
(1,2)
Transport and
Storage Limits
Nominal
Reference
Ambient
Temperature
-40 to 80_C
(-40 to 176_F)
-40 to 85_C
(-40 to 185_F)
25_C
(77_F)
Ambient
Relative
Humidity
0 to 95%,
(non‐condensing)
0 to 95%,
(non‐condensing)
40%
Weight
Less than 2.7 Kg (6 lbs)
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 - Process Instrument Terminology.
1. LCD meter may not be readable below -20_C (-4_F)
2. Contact your Emerson Process Management sales office
or application engineer if temperatures exceeding these limits are required.