Data Sheet
2500-249 Controllers and Transmitters
D200037X012
Product Bulletin
34.2:2500
July 2012
8
Table 5. Caged Displacer Sensors
(1)
SENSOR
EQUALIZING CONNECTION
PRESSURE RATING
(2)
Style Size (NPS)
Torque tube
arm rotatable
with respect
to equalizing
connections
249
(3)
Screwed 1‐1/2 or 2
CL125 or 250
Flanged 2
249B or 249BF
(4)
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
(2)
Screwed 1‐1/2 or 2 CL600
Raised face
1‐1/2 CL150, 300, or 600
2 CL150, 300, or 600
249K Raised face or optional ring‐type joint flanged 1‐1/2 or 2 CL1500
249L 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. PN flange connections available in EMA (Europe, Middle East, and Africa).
3. Not available in EMA.
4. 249BF available in EMA only. Also available in EN size DN 40 with PN 10 to PN 100 flanges and size DN 50 with PN 10 to PN 63 flanges.
5. Top connection is NPS 1 ring‐type joint flanged for connection styles F1 and F2.
Table 6. Cageless Displacer Sensors
(1)
Mounting Sensor Flange Connection (Size) Pressure Rating
(2)
Mounts on top of vessel
249BP
(3)
NPS 4 raised face or optional ring‐type joint CL150, 300, or 600
NPS 6 or 8 raised face CL150 or 300
249CP NPS 3 raised face CL150, 300, or 600
Mounts on top of vessel 249P
(4)
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
For NPS 4 raised face or flat face
CL125, 150, 250, 300, 600, 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 For NPS 3 or 4 raised face CL150, 300, or 600
1. Standard displacer lengths are 14, 32, 48, 60, 72, 84, 96, 108, and 120 inches.
2. PN flange connections available in EMA (Europe, Middle East, and Africa).
3. Not available in EMA.
4. 249P with NPS 6 and 8 flanges and PN flanges are available in EMA only.
Figure 4. Guidelines for Use of Optional Heat Insulator Assembly
Note:
If ambient dewpoint is above process temperature, ice formation might cause instrument
malfunction and reduce insulator effectiveness.
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 2.
80 90
0 20 40 60 80 100 120 140 160
-40
70
71
400
300
200
100
0
0
400
800
-325
-240
NO INSULATOR NECESSARY
AMBIENT TEMPERATURE (_C)
STANDARD CONTROLLER
AMBIENT TEMPERATURE (_F)
HEAT INSULATOR REQUIRED
TOO
HOT
PROCESS TEMPERATURE ( C)
PROCESS TEMPERATURE ( F)
_
0 20 40 60 80 100 120 140 200
01020
-18 -10
30 40 50 60 70
93
400
300
200
100
0
0
400
800
-325
NO INSULATOR NECESSARY
AMBIENT TEMPERATURE (_C)
HIGH‐TEMPERATURE CONTROLLER
AMBIENT TEMPERATURE (_F)
HEAT INSULATOR REQUIRED
TOO
HOT
PROCESS TEMPERATURE
(
C
)
PROCESS TEMPERATURE ( F)
180160
1
-100
-200
-40 -20
1
-240
-100
-200
HEAT INSULATOR REQUIRED
TOO
COLD
TOO
COLD
HEAT INSULATOR REQUIRED
01020-20 -10 30 40 50 60-30
_
_
_
B1413-1A