Fisher™ FIELDVUE™ DLC30100 Digital LevelController
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
The DLC3010 is a communicating,
microprocessor-based instrument that can be
configured to sense the level, interface level, or
density of liquids.
The DLC3010, using HART® communications protocol,
gives easy access to information critical to process
operation. You can obtain information about the
process, instrument, or sensor using an Emerson Field
Communicator. The DLC3010 can be used in analog or
HART digital signaling mode with the Emerson
Automation Solutions DeltaV™ system.
The DLC3010 digital level controller is designed to directly replace standard pneumatic and electronic level transmitters. It mounts on a wide variety of Fisher249 caged and cageless level sensors.
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.
Features
Simplified Setup and Calibration
Responsive to Small Process Changes
Reduced Temperature Effects
Easy Maintenance
Alarm Jumper
Table 2. Displacer and Torque Tube Materials
| splacer | 304 Stainless Steel | 316 Stainless Steel, N10276, N04400, Plastic, and Special Alloys |
| Displacer Stem, Driver Bearing, Displacer Rod and Driver |
316 Stainless Steel | N10276, N04400, other Austenitic Stainless Steels, and Special Alloys |
| Torque Tube | N05500(1) | 316 Stainless Steel, N06600, N10276 |
| 1. N05500 is not recommended for spring applications above 232C (450F). Contact your Emerson sales office or application engineer if temperatures exceeding this limit are required. |
Table 3. Allowable Process Temperatures for
Common Fisher 249 Sensor Pressure Boundary
Materials
| MATERIAL | PROCESS TEMPERATURE | |
| Min. | Max. | |
| Cast Iron | -29C (-20F) | 232C (450F) |
| Steel | -29C (-20F) | 427C (800F) |
| Stainless Steel | -198C (-325F) | 427C (800F) |
| N04400 | -198C (-325F) | 427C (800F) |
| Graphite Laminate/SST Gaskets |
-198C (-325F) | 427C (800F) |
| N04400/PTFE Gaskets | -73C (-100F) | 204C (400F) |
Table 4. Caged Displacer Sensors(1)
| TORQUE TUBE ORIENTATION |
SENSOR | STANDARD CAGE, HEAD, AND TORQUE TUBE ARM MATERIAL |
EQUALIZING CONNECTION | PRESSURE RATING(2) | |
| Style | Size (NPS) | ||||
| Torque tube arm rotatable with respect to equalizing connections |
249(3) | Cast Iron | Screwed | 1-1/2 or 2 | CL125 or 250 |
| Flanged | 2 | ||||
| 249B, 249BF(4) | Steel | Screwed or optional socket weld | 1-1/2 or 2 | CL600 | |
| Raised face or optional ring type joint flanged |
1-1/2 | CL150, 300, or 600 | |||
| 2 | CL150, 300, or 600 | ||||
| 249C(3) | 316 Stainless Steel | Screwed | 1-1/2 or 2 | CL600 | |
| Raised face flanged | 1-1/2 | CL150, 300, or 600 | |||
| 2 | CL150, 300, or 600 | ||||
| 249K | Steel | Raised face or optional ring type joint flanged |
1-1/2 or 2 | CL900 or 1500 | |
| 249L | Steel | Ring type joint flanged | 2(5) | CL2500 | |
| 1. Standard displacer lengths for all styles (except 249) are 14, 32, 48, 60, 72, 84, 96, 108 and 120 inches. The 249 uses a displacer with a length of either 14 or 32 inches. 2. DIN flange connections available in EMA (Europe, Middle East and Africa). 3. Not available in EMA. 4. 249BF available in EMA only. Also available in DIN size DN40 with PN10 to PN100 flanges and size DN50 with PN10 to PN63 flanges. 5. Top connection is 1-inch ring-type joint flanged for connection styles F1 and F2. |
Table 5. Cageless Displacer Sensors(1)
| Mounting | Sensor | Standard Head(2), Wafer Body(6), and Torque Tube Arm Material |
Flange Connection | Pressure Rating(3) |
| Mounts on top of vessel |
249BP(4) | Steel | NPS 4 raised face or optional ring type joint | CL150, 300, or 600 |
| NPS 6 or 8 raised face | CL150 or 300 | |||
| 249CP | 316 Stainless Steel | NPS 3 raised face | CL150, 300, or 600 | |
| 249P(5) | Steel or Stainless Steel | NPS 4 raised face or optional ring type joint | CL900 or 1500 (EN PN 10 to DIN PN 250) |
|
| NPS 6 or 8 raised face | CL150, 300, 600, 900, 1500, or 2500 |
|||
| Mounts on side of vessel |
249VS | Cast Iron, Cast Steel or CF8M (316 Stainless Steel) | For NPS 4 raised face or flat face | CL125, 150, 250, 300, 900, or 1500 (EN PN 10 to DIN PN 160 |
| For NPS 4 butt weld end, XXS | CL2500 | |||
| Mounts on top of vessel or on customer supplied cage |
249W | WCC (steel) or CF8M | For NPS 3 raised face | CL150, 300, or 600 |
| LCC (steel) or CF8M | For NPS 4 raised face | CL150, 300, or 600 | ||
| 1. Standard displacer lengths are 14, 32, 48, 60, 72, 84, 96, 108, and 120 inches. 2. Not used with side-mounted sensors. 3. DIN flange connections available in EMA (Europe, Middle East and Africa). 4. Not available in EMA. 5. 249P available in EMA only. 6. Wafer Body only applicable to 249W |
Ordering Information
When ordering, specify:
Process temperature and pressure and ambient air
temperature
Application
Liquid level service (specific gravity)
Interface level service (specific gravity of both
liquids and minimum differential gap or span
required)
Density service (minimum and maximum specific
gravity required)
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