Emerson Fisher L2, Fisher L2e, Fisher L2sj Instruction Manual
Instruction Manual Supplement
D103277X012
L2, L2e, and L2sj Controller
April 2013
Converting a Threaded NPT Connection to a
Flange Connection
Supplement to Fisherr L2, L2e, and L2sj Level Controller
Instruction Manuals
This supplement contains information for converting L2, L2e, and L2sj level controller threaded NPT connections to
flange type connections.
Refer to the Maintenance section of the appropriate instruction manual for instructions on removing the sensor from
the controller, and disassembly of the sensor connector.
See figures 1, 2, and 3 for conversion and weld end details.
Note
Modification of the L2, L2e, or L2sj sensor to a flanged connection limits the pressure rating to the flange rating.
Refer to tables 1 and 3.
Ensure flanges are marked with the appropriate pressure rating.
Flange Orientation
Orient the controller so that the case is level. See figure 4 for the proper sensor orientation for flange welding.
WARNING
To maintain code/standard compliance, weld fabrication must meet the requirements of ASME Section IX. Failures to meet
these requirement could result in personal injury and/or property damage.
WARNING
To maintain compliance with NACE MR0175, weld fabrication must meet the requirements of NACE MR0175, paragraph 5.3.
Failure to meet these requirements could result in personal injury and/or property damage.
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L2, L2e, and L2sj Controller
April 2013
Figure 1. Typical Sensor Connection
Instruction Manual Supplement
D103277X012
CUT HERE TO
REMOVE THREAD
PREPARE SURFACE
FOR WELD
10C2006-A
Figure 2. Sensor Connections (mm)
1.6 $ 0.4
51.7
53.3
* 0.8
62.7 ) 2.3
12.7
15.2
CONTROLLER
7.6
62 62
BORE AND MACHINE TO
GIVEN DIMENSIONS
1.6 $ 0.4
50.0
48.5
* 0.8
62.7 ) 2.3
12.7
15.2
CONTROLLER
11.2
37.4
62.7 ) 2.3
* 0.8
CONTROLLER
38.9
12.7
15.2
16.8
1.6 $ 0.4
66.5
NPS 2 ANSI SCHED 40
10C2006-A
NOTE:
SEE FIGURE 1 FOR A TYPICAL SENSOR CONNECTION
2
NPS 2 ANSI SCHED 80
NPS 2 ANSI SCHED XXS
Instruction Manual Supplement
D103277X012
Figure 3. Sensor Connections (Inches)
L2, L2e, L2sj Controller
April 2013
CONTROLLER
NPS 2 ANSI SCHED 40
10C2006-A
NOTE:
SEE FIGURE 1 FOR A TYPICAL SENSOR CONNECTION
CONTROLLER
Figure 4. Sensor Orientation for Flange Mounting
45_ $2.5_
A
A
FLANGE ASSEMBLY
WITH 4 HOLE FLANGE
10C1996‐A
A
NOTE RELATION
OF TABS TO THE
BOLT PATTERN
NPS 2 ANSI SCHED 80
FLANGE ASSEMBLY
WITH 8 HOLE FLANGE
CONTROLLER
NPS 2 ANSI SCHED XXS
22.5_$2.5_
A
SECTION A‐A
CONNECTION USED FOR ORIENTATION
1
FLANGE
.12 max
O
.06
CONNECTION
1
3
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