Emerson Fisher™ DLC3010 Digital Level Controller

Emerson Fisher™ DLC3010 Digital Level Controller

The Fisher FIELDVUE DLC3010 digital level controller helps you gain easy access to information critical to your process operation. Gather information about the process, instrument, or sensor using the 475 or 375 Field Communicator. The DLC3010 digital level controller can be used in analog or HART® digital signaling mode with the DeltaV™ system
Emerson Fisher™ DLC3010 Digital Level Controller

Specifications
Area Classification                 Intrinsically Safe, Explosion Proof, Dust Ignition Proof, Flame Proof, Non-incendive, Type N
Certifications                        CSA, FM, ATEX, KGS, Peso, CIMFR, NEPSI, TIIS, Ukraine Metrology, Belarus Metrology, Kazakhstan Metrology, IECEx, INMETRO, CUTR
Communication Protocol        HART®, 4-20mA Analog
Data Interface                      Wired
Diagnostics                           Yes
Mounting Type                      249 Series Torque Tube Arm Mounted
Operating Temperature          Standard Temperature
Position Control                     Monitoring
Power Source                        Loop Powered (2-Wire)ed (2-Wire)
Process Control                      Level
Emerson Fisher™ DLC3010 Digital Level Controller

The FIELDVUE DLC3010 digital level controller is used with level sensors to measure liquid level, the level of the interface between two liquids, or liquid specific gravity (density). Changes in level or specific gravity exert a buoyant force on a displacer, which rotates a torque tube shaft. The digital level controller converts this rotational motion to an electronic signal.

Emerson Fisher™ DLC3010 Digital Level Controller

through the HART protocol. Information from the field can be integrated into control systems or be received on a single loop basis.
The DLC3010 digital level controller is designed to directly replace standard pneumatic and electronic level transmitters. It mounts on a wide variety of Fisher 249 caged and cageless level sensors.
Emerson Fisher™ DLC3010 Digital Level Controller

Features
 Simplified Setup and Calibration—For quick analog transmitter replacement (4-20 mA out only), the instrument may be configured with default sensor
data, zero Level Offset, differential process SG, and zero/span procedure only. For full compensation and diagnostic capabilities, complete sensor data
entry and calibration is recommended.
 Responsive to Small Process Changes—Accurate, high-gain analog-to-digital conversion enables measurement of small changes in the process variable. This allows the DLC3010 to be used in difficult liquid level, interface, or density applications. In addition, an adjustable input filter and output damping help to attenuate displacer-induced ripple in the output signal due to liquid turbulence.
 Reduced Temperature Effects—An internal temperature sensor enables consistent performance of the digital level controller despite ambient temperature changes. With a temperature input signal, either via HART protocol or an RTD connected to the instrument, the digital level controller can also automatically compensate for specific gravity changes due to temperature. A user-supplied table of up to ten linear segments may be entered to implement this feature. (A sample water/steam table is provided in the DLC3010 instruction manual (D102748X012). The measured torque tube rate may be manually pre-compensated for a target process temperature using the data available in the DLC3010 Device Description (DD).
 Additional Compensation—The instrument measurement algorithm corrects for the small motion of the displacer as buoyancy changes, allowing it to calculate the true cage or vessel level. This provides additional accuracy on the shorter displacers.
 Rugged Construction—Mechanical safeguards designed into the digital level controller help it to withstand physical abuse often incurred during installation or in transport, without compromising performance. The fully encapsulated printed wiring boards resist the effects of vibration, temperature,
and corrosive atmospheres. The lever assembly is pinned at the neutral position when the coupling access door is open, providing shipping stabilization
for a separate transmitter purchase. Locking set screws are provided for covers and the access door handle.
 Easy Maintenance—Field wiring connections are in a compartment separated from the electronics. This protects the electronics from any moisture brought into the housing by the field wiring. This also eases installation and maintenance. The digital level controller does not have to be removed to facilitate troubleshooting or service. Modular construction (figure 4) allows servicing in the field. However, if it is necessary to remove the digital level controller for in-shop maintenance and calibration, field wiring does not need to be disconnected.
 Alarm Jumper—The DLC3010 digital level controller includes self-diagnostics that detect an error (e.g. electronics failure) that would render the process
variable measurement inaccurate. The instrument can also be configured to indicate a process variable high or low alarm. When a process variable alarm or an error is detected the analog output signal is driven either above or below the normal 4 to 20 mA range, depending on the user-selectable position of
the alarm jumper. The unit ships from the factory with the jumper in the high position.