Dwyer 295 - Manual

Series 195 & 295 Smart Positioners
Specifications - Installation and Operating Instructions
Bulletin V -195/295
SPECIFICATIONS
Input Signal: 4 to 20 mA DC.
Input Impedance: 460 Ω max @ 20 mA DC.
Enclosure: Aluminum.
Air Supply: 35 to 116 psi (2.4 to 8 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: .32 scfm (9 LPM) at 20 psi (1.4 bar) supply.
Stroke:
195: 0.19 to 1.38˝ (5 to 35 mm);
295: 0 to 90°.
Enclosure Rating: NEMA 4X (IP66).
Temperature: Operating: -22 to 185°F (-30 to 85°C).
Weight: 1.8 lb (.82 kg).
Lever:
195: 39 to 1.57˝ (10 to 40 mm);
295: NAMUR.
The Series 195 and 295 Smart Positioners are a compact way to control the
valve stroke 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 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.
• Low air consumption reduces operating cost.
• Compact size allows for installation on small actuators.
• Can be used in low voltage (8.5 V), leaving no limitation in controller.
• Variable orifice is applied in case of a small actuator, the hunting is controlled
to the optimum condition during operation.
• 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.
• Specific flow control is available with setting 16 points at users’ command.
• 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.
195
Series 195
295
HART ® is a registered trademark of Hart Communication Foundation.
Series 295
1 57/64˝
[48.00]
1 11/32˝
[34.00]
5/16˝ [8.00]
2 1/4˝
[57.00]
15/16˝
[24.00]
3 3/32˝
[78.50]
4˝
[101.60]
5 45/64˝ [144.80]
2 1/2˝
[63.60]
5 7/16˝ [138.30]
1 27/64˝
[36.00]
25/64˝
[10.00]
1 3/16˝
[30.00]
25/64˝
[10.00]
5/32˝
[4.00] CONDUIT ENTRY
1/2 NPT
4X M6 TAP
LCD SCREEN SMART POSITIONER
CONDUIT ENTRY
1/2 NPT
1 57/64˝
[48.00]
1 11/32˝
[34.00]
5/16˝ [8.00]
2 1/4˝
[57.00]
15/16˝
[24.00]
3 3/32˝
[78.50]
5 1/64˝
[127.32]
5 45/64˝ [144.80]
2 1/2˝
[63.60]
5 7/16˝ [138.30]
1 27/64˝
[36.00]
25/64˝
[10.00]
1 3/16˝
[30.00]
25/64˝
[10.00]
5/32˝
[4.00]
2 37/64˝
[65.40]
4X M6 TAP
LCD SCREEN
1 59/64˝
[48.82]
SMART POSITIONER
PROXIMITY CONTROLS
Phone: 219/879-8000 www.dwyer-inst.com
A DIVISION OF DWYER INSTRUMENTS, INC. Fax: 219/872-9057 e-mail: [email protected]
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.