Fisher 3570 - Specifications; Educational Services

Instruction Manual
D200137X012
3570 Positioners
September 2015
4
Table 1. Specifications (Continued)
Declaration of SEP
Fisher Controls International LLC declares this
product to be in compliance with Article 3 paragraph
3 of the Pressure Equipment Directive (PED) 97 / 23 /
EC. It was designed and manufactured in accordance
with Sound Engineering Practice (SEP) and cannot
bear the CE marking related to PED compliance.
However, the product may bear the CE marking to
indicate compliance with other applicable European
Community Directives.
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 - Process Instrument Terminology.
1. For a 3570 or 3570C positioner mounted on a 470 or 480 actuator. Values do not apply to other constructions or actuator‐valve combinations.
2. m
3
/h at 0°C, 1.01325 bar, absolute (Scfh at 60°F, 14.7 psia).
Table 2. Action Under Normal Operating Conditions
POSITIONER ACTION
DESIRED PISTON MOTION
(1)
Down Up
Direct‐acting Increasing input signal pressure to bellows Decreasing input signal pressure to bellows
Reverse‐acting Decreasing input signal pressure to bellows Increasing input signal pressure to bellows
1. Supply pressure is routed through relays to piston.
Table 3. Pressure Indications
PRESSURE MONITORED
NUMBER OF GAUGES SUPPLIED
STANDARD GAUGE RANGE
(1)
Two‐Relay
Positioner
One‐Relay
Positioner
Positioner input signal pressure 1 1
0‐30 psi/0‐0.2 MPa/0‐2 bar or
0‐60 psi/0‐0.4 MPa/0‐4 bar
Cylinder (relay output) pressure 2 1 0‐160 psi/0‐1.1 MPa/0‐11 bar
1. For gauges marked in other units and ranges, consult your Emerson Process Management sales office.
3573 — Pneumatic valve positioner that is similar to The 3572 positioner with the relay output pressure piped to the
bottom (piston underside) of the actuator cylinder. The 3573 positioner is normally used on the 473 pneumatic piston
actuator with valve bodies having push‐down‐to‐close (PDTC) action.
3576 (Discontinued)— Pneumatic valve positioner with one relay for use on direct‐acting pneumatic diaphragm
actuators that require high operating pressures. The 3576 positioner includes two pressure gauges to monitor input
signal pressure and relay output pressure to the top of the actuator diaphragm.
The 3576 positioner is bracket‐mounted to the actuator yoke. Actuator stem position feedback is provided through a
wire from the actuator‐valve stem connector.
3577 (Discontinued)— Pneumatic valve positioner that is similar to 3576 positioner with the relay output pressure
piped to the underside of the actuator diaphragm on reverse‐acting pneumatic diaphragm actuators.
Specifications
Specifications for 3570 positioners are listed in table 1.
Educational Services
For information on available courses for 3570 positioners, as well as a variety of other products, contact:
Emerson Process Management
Educational Services, Registration
Phone: +1-641-754-3771 or +1-800-338-8158
e‐mail: education@emerson.com
http://www.emersonprocess.com/education