Data Sheet

2500-249 Controllers and Transmitters
D200037X012
Product Bulletin
34.2:2500
July 2012
9
Table 7. Construction Materials
Part Sensor Material
In contact
with process
Cage, head,
torque tube arm
249 Cast iron
249B, 249BF
(1)
Carbon steel
249C and 249CP CF8M (316 stainless steel) standard,
CF3M (316L stainless steel),
CF8 (304 stainless steel), CF3 (304L stainless steel),
LCC (steel), C5 (steel),
LC3 (3.5 percent nickel steel), M35‐1,
CN7M (Alloy 20)
249K Steel standard, CF8, CF8M, CF3M, LCC, C5,
LC3, WC1 (chrome moly steel), M35‐1, CN7M optional
249L Steel standard, CF8M, C5, WC1, LCC
249BP Carbon Steel
249P Carbon Steel
249VS LCC, WCC (steel), CF8M
Wafer body,
torque tube arm
249W NPS 3
NPS 4
WCC, CF8M
LCC, CF8M
Torque tube
249, 249B, 249BF
(1)
,
249K, 249L,
249P, 249VS, 249W
N05500 standard
249C, 249CP,
stainless steel 249VS,
249W
S31600 (316 stainless steel) standard
All S30403 (304L stainless steel), S31603 (316L stainless steel),
N06600, N08020 (Alloy 20) optional
Displacer
249, 249B, 249BF
(1)
,
249K, 249VS, 249W
S30400 (304 stainless steel) standard
249C, 249CP, 249W S31600 (316 stainless steel) standard
249L A91100F (solid aluminum) standard
All Solid PTFE, N04400 or other special materials
Standard trim
(2)
All S31600
Bolting All Steel grade B7 studs or cap screws and grade 2H nuts (standard),
steel grade B7M studs and grade 2M nuts optional on 249B and
WCC 249W sensor
Standard torque
tube end gasket
All 316 stainless steel/graphite laminate, except 304 stainless steel/graphite
laminate for 249K sensor
Standard torque
tube arm and
cage gasket, if used
All Composition, except soft iron for the 249L sensor
Optional trim
and gasketing
All 316 stainless steel trim with 316L stainless steel gasketing
or soft iron gasketing; 317 stainless steel or N06600 trim with composition
gasketing; 304, 304L or 316L stainless steel, N04400 or
N08020 trim and gasketing
In contact with
supply pressure
Bourdon tube or bellows
Brass, plus SST 3‐way valve for 2503 or 2503R controller
Tubing
Stainless steel
Relay diaphragms
Nitrile (standard) or polyacrylate (high‐temperature)
Relay O‐ring
Nitrile
Gasketing
Chloroprene (standard) or rubber (high‐temperature)
Seal ring O‐rings (and reset relief
valve O‐rings if used)
Nitrile (standard) or fluorocarbon (high‐temperature)
Other
Case
Aluminum
Cover
Aluminum with glass gauge windows and nitrile cover gasket
Retaining flange
Steel
1. Available only in EMA.
2. Trim parts include displacer rod, driver bearing; displacer stem parts, and stem connection parts.