Quick Start Guide
D103470X012
DLC3020f Digital Level Controller
April 2022
9
Mounting the DLC3020f for High Temperature Applications
Refer to figure 6 for parts identification except where otherwise indicated.
A torque tube shaft extension is required for a 249 sensor when using an insulator assembly.
MN28800
20A7423‐C
B2707
SENSOR
DIGITAL LEVEL CONTROLLER
SHAFT
EXTENSION
(KEY 58)
SHAFT
COUPLING
(KEY 59)
SET SCREWS
(KEY 60)
INSULATOR
(KEY 57)
CAP SCREWS
(KEY 63)
MOUNTING STUDS
(KEY 33)
HEX NUTS
(KEY 34)
WASHER
(KEY 78)
Figure 6. Digital Level Controller Mounting on Sensor in High Temperature Applications
HEAT INSULATOR
REQUIRED
70
0
20
40
60
80
100 120
140
160
0
10
20
-20
-10
30
40
50
60
400
300
200
100
0
0
400
800
-325
AMBIENT TEMPERATURE (
_
C)
STANDARD TRANSMITTER
AMBIENT TEMPERATURE (
_
F)
HEAT INSULATOR
REQUIRED
TOO
HOT
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
425
80
-100
-200
176
-20
-40
-40
-30
TOO
COLD
1
NO HEAT INSULATOR NECESSARY
Figure 7. Guidelines for Use of Optional Heat Insulator Assembly
PROCESS TEMPERATURE (
_
F)
PROCESS TEMPERATURE (
_
C)
Note
Measurement errors can occur if the torque tube assembly is bent or misaligned during installation.
