Emerson Fisher 785C, Инструкция по эксплуатации

Страница: 2 / 72

Instruction Manual
D104483X012
785C Actuator
May 2022
2
Table 1. Specifications
Operating Pressure
(1)
Minimum: 2.7 barg (40 psig)
Maximum Allowable:
10.3 barg (150 psig)
Consult your Emerson sales office for supply
pressures under 2.7 barg (40 psig)
Travel
(2)
16 mm (0.625 inch) through 610 mm (24 inch)
See table 2 and 4
Thrust Capabilities
See table 3, 6, and 7
Stroking Speeds
Varies with actuator size, spring, travel, and supply
pressure. If stroking speed is critical, consult your
Emerson sales office.
Piston Diameter and Area
(2)
Available diameters range from 280 to 685 mm
(11 to 27 inches).
See table 2, 4, and 5
For additional sizes, contact your Emerson sales
office.
Operative Temperature Limits
(3)
Standard : -20 to 100
_
C (-4 to 212
_
F)
Low Temperature Options :
-40 to 100
_
C (-40 to 212
_
F) or
-60 to 100
_
C (-76 to 212
_
F)
High Temperature Option :
-20 to 200
_
C (-4 to 392
_
F)
Yoke Boss and Valve Stem Diameter
Standard : J 90 mm (3-9/16 inch) yoke boss with
19 mm (3/4 inch) stem J 127 mm (5 inch) yoke boss
with 25.4 mm (1 inch) stem J 127 mm (5H) yoke
boss with 32 mm (1-1/4 inch) stem J 178 mm
(7 inch) yoke boss with 51 mm (2 inch) stem
High Performance:
J 127 mm (5H) yoke boss with
32 mm (1-1/4 inch) stem J 178 mm (7 inch) yoke
boss with 51 mm (2 inch) stem
Pressure Connections
Standard: 3/4 NPT
Optional: 1 and 1-1/4 NPT
Instrument Mounting
Standard mounting kits are available for use with
FIELDVUE DVC6200 Series digital valve controllers up
to 610 mm (24 inch) travel. High performance
mounting kits are available for travel above 203 mm
(8 inch).
Construction Materials
(4)
Part Material
Cylinder Carbon Steel
Nameplate and Travel Scale Stainless Steel
Piston Carbon Steel
Piston Rod Stainless Steel
Stem Connector Carbon Steel or Stainless Steel
Tie Rod Carbon Steel or Stainless Steel
Upper/Lower Heads Carbon Steel
Yoke Carbon Steel
Lifting Point Load Ratings
See table 8 and figure 2
Options
J Top mounted handwheel
J Side mounted handpump
J Pneumatic fail mode via Fisher 377 trip valve
J Volume boosters
Optional Certifications
(5)
J
Pressure Equipment Directive (PED) 2014/68/EU
and Machinery Directive 2006/42/EC
J ATEX Group II Category 2 Gas and Dust
J Customs Union Technical Regulations (CUTR)
010/2011 and 012/2011
J Safety Instrumented System, SIL 3 Capable
J Inspection Documents EN 10204 3.1 Certificate
1. The pressure/temperature limits in this bulletin and any other applicable standard or code should not be exceeded.
2. Consult your Emerson sales office for longer travels or larger cylinder diameters. The Fisher 585C family of actuators can be used for smaller travels or cylinder diameters.
3 Standard temperature -20 to 100
_
C (-4 to 212
_
F) and -40 to 100
_
C (-40 to 212
_
F) are PED 2014/68/EU and 2006/42/EC compliant. The low ambient temperature option, -60 to 100
_
C (-76 to 212
_
F)
is not PED compliant. The high temperature option, if used in conjunction with ATEX, is limited to 135
_
C (275
_
F).
4. Full stainless steel constructions are available upon request.
5. Refer to the product nameplates to determine which certifications each actuator construction possesses