Dwyer 285 - Manual

Series 185/285 Smart Positioners
Specifications - Installation and Operating Instructions
Bulletin V-185/285
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Input Signal: 4 to 20 mA DC.
Input Impedance: 460 Ω max @ 20 mA DC.
Enclosure: Aluminum, SS.
Air Supply: 35 to 116 psi (2.4 to 9 bar).
Air Connection: 1/4˝ NPT.
Gage Connection: 1/8˝ NPT.
Conduit Connection: 1/2˝ NPT.
Linearity: ±0.5% FS.
Hysteresis: ±0.5% FS.
Sensitivity: ±0.2% FS.
Repeatability: ±0.3% FS.
Air Consumption: .0004 scfm (.01 LPM) at 20 psig (1.4 bar) supply.
Flow Capacity: 2.1 scfm (60 LPM) at 20 psig (1.4 bar) supply.
Stroke: 185: 0.5 to 6 in (10 to 150 mm); 285: 0 to 90°.
Enclosure Rating: NEMA 4X (IP66).
Temperature: Operating: -22 to 185°F (-30 to 85°C).
Weight: 185: 3.3 lb (1.5 kg); 285: 6.4lb (2.9 kg).
Lever: 185: .39 to 1.57 in (10 to 40 mm); 285: NAMUR. The Series 185 and 285 Smart Positioners control valve movements accurately
using an input signal of 4 to 20 mA from the controller. In addition, a highly efficient
microprocessing operator built into the product performs various functions such as
auto calibration, PID control, alarm and Hart
® protocol.
Features
• LCD allows the user to directly check the positioner condition in the field.
• Endures severe vibration.
• Operates normally regardless of changes in supply pressure during operation.
• Simple to use auto calibration.
• Easily equipped on small actuators because of its small size.
• Low air consumption reduces operating cost.
• Can be used in low voltage (8.5 V), leaving no limitation in controller.
• HART
® communication available for configurating parameters or monitoring the
valve position.
• Analog feedback signal (4 to 20 mA).
• The adjustment of valve characteristics (linear, quick open, equal percentage)
available.
• Tight shut-close and shut-open can be set in the programming menu.
• PID parameters can easily be adjusted in the field without additional
communicator.
• Split ranges such as 4 to 12 mA, with 12 to 20 mA available.
• The positioner can manually actuate the valve or damper.
• An air filter regulator can be mounted directly to the positioner.
LCD SCREEN
SMART POSITIONER
3-27/32
[97.50]
3-1/64
[76.50]
4-7/64
[104.20]
SUPPLY
1/4 NPT
2-33/64
[64.00]
2-11/32
[59.60]
4-13/32
[111.90]
STAINLESS STEEL
4-31/64
[113.8]
STANDARD
CONDUIT ENTRY
1/2 NPT
8-31/64
[215.70]
DOUBLE
ACTION
SINGLE
ACTION
3-47/64
[95.00]
Series 185
Series 285
HART ® is a registered trademark of Hart Communication Foundation