Data Sheet

Level Instruments
D103219X012
Product Bulletin
11.2:Level
February 2015
4
Table 2. FIELDVUE DLC3020f General Specifications
Controller
Selections
(1)
For use with 249 caged and
uncaged displacer sensors
DLC3020f
Device Inputs
Level Sensor Input: Rotary motion of the torque tube shaft proportional to buoyant force of the displacer
caused by changes in liquid level or interface level.
Process Temperature: Interface for 2‐ or 3‐wire 100 ohm platinum RTD for sensing process temperature;
AO Block - Foundation fieldbus temperature transmitter; Manual - compensation values entered manually
in the device
Digital Communication Protocol Foundation fieldbus registered device (ITK 5)
Supply 9 to 32 volts DC, 17.7 mA DC; instrument is not polarity sensitive
Ambient Relative Humidity 0 to 95% non‐condensing
Approximate Weight (Controller) 2.7 kg (6 pounds)
Option Heat insulator
Electrical Housing Type 4X, NEMA 4X, IP66
Hazardous Area Classification
(2)
CSA—Intrinsically Safe, Explosion-proof, Division 2, Dust Ignition-proof
FM—Intrinsically Safe, Explosion-proof, Non-incendive, Dust Ignition-proof
ATEX—Intrinsically Safe, Type n, Flameproof
IECEx—Intrinsically Safe, Type n, Flameproof
1. Also refer to tables 4, 5, 6, and 7.
2. Other Certifications/Classifications available. Contact your Emerson Process Management Sales office for additional information.
Table 3. FIELDVUE DLC3010/DLC3020f Performance
(1)
Performance Criteria
Stand‐Alone
DLC3010 w/ NPS 3 249W,
Using a14‐inch Displacer
DLC3010 w/ All Other
249 Sensors
DLC3010 DLC3020f
(2)
Independent Linearity
$0.25% of output span $0.1% of output span $0.8% of output span $0.5% of output span
Hysteresis < 0.2% of output span < 0.50% of output span - - - - - -
Repeatability
$0.1% of full scale output
< 0.10% of output span
$0.5% of output span $0.3% of output span
Dead Band < 0.05% of input span
$ 0.10% (RH9.2% to 90%)
- - - - - -
Hysteresis and Dead Band - - - - - - < 1.0% of output span < 1.0% of output span
Accuracy - - -
$0.15%
- - - - - -
Process Sensor
Range (Input
Signal)
Fluid Level or Fluid
Interface Level
From 0 to 100 percent of displacer length
(3)
—standard lengths for all sensors are 356 mm (14 inches)
or 813 mm (32 inches); other lengths available depending on sensor construction
Fluid Density
(DLC3010)
From 10 to 100 percent of displacement force change obtained with given displacer volume—standard volumes
are 1016 cm
3
(62 in
3
) for 249C and 249CP sensors and 1622 or 1360 cm
3
(99 or 83 in
3
) for most other sensors;
other volumes available depending upon sensor construction
Allowable
Specific
Gravity
(Standard)
Fluid Level or Fluid
Interface Level
Specific gravity range, 0.05 to 1.10; Minimum differential specific gravity 0.05
(4)
Fluid Density
(DLC3010)
Specific gravity range, 0.1 to 1.10; Minimum change in specific gravity 0.05
(4)
Zero
Adjustment
Fluid Level or Fluid
Interface Level
Continuously adjustable to position span of less than 100 percent anywhere within displacer length, and report
the value in engineering units with any desired bias.
Fluid Density
(DLC3010)
Continuously adjustable to position span of less than 90 percent anywhere within 10 to 100 percent of
displacement force change obtained with given displacer volume.
1. At full design span, reference conditions.
2. To lever assembly rotation inputs.
3. The torque tube and the displacer must be properly sized for the application in order for 0 to 100% of displacer length to be available.
4. 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. 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.