Instruction Manual

Instruction Manual
D102803X012
249W Sensor
December 2012
11
Table 2. Recommended Bolt Torque for Typical Lubricants (NPS 3 Flanges)
Bolt and Nut
Material
Bolt Size
Mating Flange
Pressure Rating
Lubricant
Fisher NCF2
(1)
Coating
Molykote
R
321R Lubriplate
R
Mag‐1
Never‐Seez
R
Nickel Special
Torque, NSm (lbfSft)
SA193‐B7
5/8 ‐ 11
3/4 ‐ 10
3/4 ‐ 10
CL150
CL300
CL600
431±62 (97±14)
667±98 (150±22)
667±98 (150±22)
431±62 (97±14)
667±98 (150±22)
667±98 (150±22)
556±84 (125±19)
845±124 (190 ±28)
845±124 (190±28)
534±80 (120±18)
801±133 (180±30)
801±133 (180±30)
SA193‐B7M
5/8 ‐ 11
3/4 ‐ 10
3/4 ‐ 10
CL150
CL300
CL600
431±44 (97±10)
689±71 (155±16)
689±71 (155±16)
431±44 (97±10)
689±71 (155±16)
689±71 (155 ±16)
556±58 (125±13)
890±89 (200±20)
890±89 (200±20)
534±53 (120±12
845±84 (190±19)
845±84 (190±19)
SA193‐B8M CL2
5/8 ‐ 11
3/4 ‐ 10
3/4 ‐ 10
CL150
CL300
CL600
Not applicable
418±62 (94±14)
689±102 (155±23)
689±102 (155±23)
534±80 (120±18)
890±133 (200±30)
890±133 (200±30)
511±67 (115±15)
845±124 (190±28)
845±124 (190±28)
1. Torque values for NCF2 without additional lubricant are equal to Molykote 321R
Table 3. Recommended Bolt Torque for Typical Lubricants (NPS 4 Flanges)
Bolt and Nut
Material
Bolt Size
Mating Flange
Pressure Rating
Lubricant
Fisher NCF2
(1)
Coating
Molykote 321R Lubriplate Mag‐1
Never‐Seez
Nickel Special
Torque, NSm (lbfSft)
SA193‐B7
5/8 ‐ 11
3/4 ‐ 10
7/8 ‐ 9
CL150
CL300
CL600
431±62 (97±14)
667±98 (150±22)
1022±102 (230±23)
431±62 (97±14)
667±98 (150±22)
1022±102 (230±23)
556±84 (125±19)
845±124 (190 ±28)
1289±129 (290±29)
534±80 (120±18)
801±133 (180±30)
1222±122 (275±28)
SA193‐B7M
5/8 ‐ 11
3/4 ‐ 10
7/8 ‐ 9
CL150
CL300
CL600
431±44 (97±10)
689±71 (155±16)
1022±102 (230±23)
431±44 (97±10)
689±71 (155±16)
1022±102 (230±23)
556±58 (125±13)
890±89 (200±20)
1289±129 (290±29)
534±53 (120±12
845±84 (190±19)
1222±122 (275±28)
SA193‐B8M CL2
5/8 ‐ 11
3/4 ‐ 10
7/8 ‐ 9
CL150
CL300
CL600
Not applicable
418±62 (94±14)
689±102 (155±23)
956±96 (255±96)
534±80 (120±18)
890±133 (200±30)
1133±114 (255±26)
511±67 (115±15)
845±124 (190±28)
1111±111 (250±25)
1. Torque values for NCF2 without additional lubricant are equal to Molykote 321R
Maintenance
Sensor parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection
and replacement depends upon the severity of service conditions.
WARNING
Avoid personal injury or property damage resulting from the sudden release of pressure. Before performing any
maintenance procedure:
D Always wear protective clothing, gloves, and eyewear.
D Relieve any process pressure in the process vessel where the 249W sensor is installed.
D Drain the process liquid from the process vessel.
D Shut off any electrical or pneumatic input to the controller or transmitter attached to the 249W sensor and vent any
pneumatic supply pressure.
D Use caution when loosening flange bolting or pipe plugs.
D Remove the controller or transmitter from the torque tube arm (key 2).
Before performing any maintenance procedure requiring the handling of the displacer, inspect the displacer (key 4) to
make sure process pressure or liquids have not penetrated the displacer.