Fisher 3570 Instruction Manual page 3

Instruction Manual
D200137X012
Table 1. Specifications
Available Configurations
See the positioner type number descriptions given
above.
Input Signal
Standard Ranges: 0.2 to 1.0 bar (3 to 15 psig) or 0.4
to 2.0 bar (6 to 30 psig)
Optional Ranges: As desired, within the limits of the
bellows
Split Ranges: Use one‐half of either standard range
when two control valves are operated by one output
signal form a single control device
Output Signal
Type: Pneumatic pressure as required to maintain the
correct valve stem position and seat load
Action: Field‐reversible between direct and reverse
(1)
Resolution
0.2% of instrument pressure span
(1)
Repeatability
0.3% of total stroke or instrument pressure span
Pressure Connections
Vent: 3/8 NPT
All others: 1/4 NPT
Pressure Indications
3570C and 3570CP Positioners: Tire valves accept
standard pressure gauge chucks (gauges not
supplied)
All Other Types: Gauges supplied per table 3
Bellows Pressure Rating
Standard Bellows: 3.4 bar (50 psig)
Optional Bellows: 6.2 bar (90 psig)
Supply Pressure
Maximum: 10.4 bar (150 psig)
Minimum: 2.4 bar (35 psig)
Supply Medium
Air or Natural Gas
Supply medium must be clean, dry, and noncorrosive
Per ISA Standard 7.0.01
A maximum 40 micrometer particle size in the air
system is acceptable. Further filtration down to 5
micrometer particle size is recommended. Lubricant
content is not to exceed 1 ppm weight (w/w) or
volume (v/v) basis. Condensation in the air supply
should be minimized
Per ISO 8573-1
Maximum particle density size: Class 7
Oil content: Class 3
Pressure Dew Point: Class 3 or at least 10_C less than
the lowest ambient temperature expected
Steady‐State Air Consumption
0.54 normal m
supply pressure
Operative Ambient Temperature Limits
With Nitrile O‐Rings and Diaphragms: –34 to 71°C
(–30 to 160°F)
With Fluorocarbon O‐Rings and Diaphragms
(Optional): 0 to 104°C (32 to 220°F)
Hazardous Area Classification
Complies with the requirements of ATEX Group II
Category 2 Gas and Dust
Meets Customs Union technical regulation TP TC
012/2011 for Groups II/III Category 2 equipment
II Gb c T*X
III Db c T*X
Options
J
Restrictor (high‐frequency filter for bellows)
Approximate Weight
2.7 kg (6 pounds) without optional mounting bracket
or actuator/valve assembly
‐ continued ‐
3570 Positioners
(2)
3
/h (20 scfh) with 6.9 bar (100 psig)
September 2015
(1)
3