Section 2 Installation; Configuration: On The Bench Or In The Loop; Protecting The Coupling And Flexures - Emerson FISHER FIELDVUE DLC3010 Instruction Manual

Instruction Manual
D102748X012
Section 2 Installation2-2-
This section contains digital level controller installation information including an installation flowchart (figure 2‐1),
mounting and electrical installation information, and a discussion of failure mode jumpers.

Configuration: On the Bench or in the Loop

Configure the digital level controller before or after installation. It may be useful to configure the instrument on the
bench before installation to ensure proper operation, and to familiarize yourself with its functionality.

Protecting the Coupling and Flexures

CAUTION
Damage to flexures and other parts can cause measurement errors. Observe the following steps before moving the sensor
and controller.
Lever Lock
The lever lock is built in to the coupling access handle. When the handle is open, it positions the lever in the neutral
travel position for coupling. In some cases, this function is used to protect the lever assembly from violent motion
during shipment.
A DLC3010 controller will have one of the following mechanical configurations when received:
1. A fully assembled and coupled caged‐displacer system shipped with the displacer or driver rod blocked within the
operating range by mechanical means. In this case, the access handle (figure 2‐4) will be in the unlocked position.
Remove the displacer‐blocking hardware before calibration. (See the appropriate sensor instruction manual). The
coupling should be intact.
CAUTION
When shipping an instrument mounted on a sensor, if the lever assembly is coupled to the linkage, and the linkage is
constrained by the displacer blocks, use of the lever lock may result in damage to bellows joints or flexure.
2. If the displacer cannot be blocked because of cage configuration or other concerns, the transmitter is uncoupled
from the torque tube by loosening the coupling nut, and the access handle will be in the locked position. Before
placing such a configuration into service, perform the Coupling procedure found on page 39.
3. For a cageless system where the displacer is not connected to the torque tube during shipping, the torque tube
itself stabilizes the coupled lever position by resting against a physical stop in the sensor. The access handle will be
in the unlocked position. Mount the sensor and hang the displacer. The coupling should be intact.
DLC3010 Digital Level Controller
Installation
May 2018
15