Instruction Manual
D102748X012
DLC3010 Digital Level Controller
Introduction and Specifications
May 2018
6
Table 1‐1. DLC3010 Digital Level Controller Specifications
Available Configurations
DLC3010 Digital Level Controller:
Mounts on caged and cageless 249 sensors.
See
tables 1‐6 and 1‐7 and sensor description.
Function:
Transmitter
Communications Protocol:
HART
Input Signal
Level, Interface, or Density:
Rotary motion of torque
tube shaft proportional to changes in liquid level,
interface level, or density that change the buoyancy
of a displacer.
Process Temperature:
Interface for 2‐ or 3‐wire 100
ohm platinum RTD for sensing process temperature,
or optional user‐entered target temperature to
permit compensating for changes in specific gravity
Output Signal
Analog:
4‐20 milliamperes DC (
J
direct
action—increasing level, interface, or density
increases output; or
J
reverse action—increasing
level, interface, or density decreases output)
High saturation:
20.5 mA
Low saturation:
3.8 mA
High alarm:
22.5 mA
Low Alarm:
3.7 mA
Only one of the above high/low alarm definitions is
available in a given configuration. NAMUR NE 43
compliant when high alarm level is selected.
Digital:
HART
1200 Baud FSK (frequency shift keyed)
HART impedance requirements must be met to
enable communication. Total shunt impedance
across the master device connections (excluding the
master and transmitter impedance) must be between
230 and 600 ohms. The transmitter HART receive
impedance is defined as:
Rx:
42K ohms and
Cx:
14 nF
Note that in point‐to‐point configuration, analog and
digital signalling are available. The instrument may be
queried digitally for information, or placed in Burst
mode to regularly transmit unsolicited process
information digitally. In multi‐drop mode, the output
current is fixed at 4 mA, and only digital
communication is available.
Performance
Performance
Criteria
DLC3010
Digital Level
Controller
(1)
w/ NPS 3
249W, Using
a 14‐inch
Displacer
w/ All Other
249 Sensors
Independent
Linearity
$
0.25% of
output span
$
0.8% of
output span
$
0.5% of
output span
Hysteresis
<
0.2% of
output span
- - -
- - -
Repeatability
$
0.1% of full
scale output
$
0.5% of
output span
$
0.3% of
output span
Dead Band
<
0.05% of
input span
- - -
- - -
Hysteresis plus
Deadband
- - -
<
1.0% of
output span
<
1.0% of
output span
NOTE: At full design span, reference conditions.
1. To lever assembly rotation inputs.
At effective proportional band (PB)<100%, linearity,
dead band, and repeatability are derated by the factor
(100%/PB)
Operating Influences
Power Supply Effect:
Output changes <
±
0.2% of full
scale when supply varies between min. and max
voltage specifications.
Transient Voltage Protection:
The loop terminals are
protected by a transient voltage suppressor. The
specifications are as follows:
Pulse Waveform
Max V
CL
(Clamping
Voltage) (V)
Max I
PP
(Pulse Peak
@ Current) (A)
Rise Time
s)
Decay to
50%
s)
10
1000
93.6
16
8
20
121
83
Note:
μ
s = microsecond
Ambient Temperature:
The combined temperature
effect on zero and span without the 249 sensor is less
than 0.03% of full scale per degree Kelvin over the
operating range -40 to 80
_
C (-40 to 176
_
F)
Process Temperature:
The torque rate is affected by
the process temperature (see figure 1‐2 and 1‐3). The
process density may also be affected by the process
temperature.
Process Density:
The sensitivity to error in knowledge
of process density is proportional to the differential
density of the calibration. If the differential specific
gravity is 0.2, an error of 0.02 specific gravity units in
knowledge of a process fluid density represents 10%
of span.
-continued-
