Emerson Fisher FIELDVUE DLC3020f Quick Start Manual page 9

Quick Start Guide
D103470X012
Mounting the DLC3020f for High Temperature Applications
Refer to figure 6 for parts identification except where otherwise indicated.
The digital level controller requires an insulator assembly when temperatures exceed the limits shown in figure 7.
A torque tube shaft extension is required for a 249 sensor when using an insulator assembly.
Figure 6. Digital Level Controller Mounting on Sensor in High Temperature Applications
CAP SCREWS
(KEY 63)
MN28800
SENSOR
20A7423‐C
B2707
Figure 7. Guidelines for Use of Optional Heat Insulator Assembly
AMBIENT TEMPERATURE (_C)
0
-40 -30 -20 -10
800
HEAT INSULATOR
400
NO HEAT INSULATOR NECESSARY
0
1
TOO HEAT INSULATOR
COLD REQUIRED
-325
-40 -20 0 20 40
AMBIENT TEMPERATURE (_F)
STANDARD TRANSMITTER
NOTES:
1 FOR PROCESS TEMPERATURES BELOW -29_C (-20_F) AND ABOVE 204_C (400_F)
SENSOR MATERIALS MUST BE APPROPRIATE FOR THE PROCESS - SEE TABLE 5.
2. IF AMBIENT DEW POINT IS ABOVE PROCESS TEMPERATURE, ICE FORMATION MIGHT CAUSE
INSTRUMENT MALFUNCTION AND REDUCE INSULATOR EFFECTIVENESS.
39A4070‐B
A5494‐1
Note
Measurement errors can occur if the torque tube assembly is bent or misaligned during installation.
SET SCREWS
(KEY 60)
WASHER
(KEY 78)
SHAFT
COUPLING
HEX NUTS
(KEY 59)
(KEY 34)
10 20 30 40 50 60 70
TOO
HOT
REQUIRED
60 80 100 120 140 160
INSULATOR
(KEY 57)
SHAFT
EXTENSION
(KEY 58)
MOUNTING STUDS
(KEY 33)
80
425
400
300
200
100
0
-100
-200
176
DLC3020f Digital Level Controller
DIGITAL LEVEL CONTROLLER
April 2022
9