Dwyer 295 User Manual
Bulletin V -195/295
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
4
X M6 TAP
L
CD 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
Series 195 & 295 Smart Positioners
Specifications - Installation and Operating Instructions
195
Series 195
Series 295
295
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
• HART
• Analog feedback signal (4 to 20 mA).
• The adjustment of valve characteristics (linear, quick open, equal percentage)
• 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
• Split ranges such as 4 to 12 mA, with 12 to 20 mA available.
• The positioner can manually actuate the valve or damper.
to the optimum condition during operation.
®
communication available for configurating parameters or monitoring the
valve position.
available.
communicator.
PROXIMITY CONTROLS
A DIVISION OF DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A.
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.
HART® is a registered trademark of Hart Communication Foundation.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: info@dwyer-inst.com
tructure
0
1
00
5
0
0
100
50
0
100
50
S
he structure of the 195 is shown below. The Series 295 structure is the same as
T
he linear model without the feedback lever.
t
age 2
nstalling Series 195 with Bracket
I
t is necessary to make a proper bracket to attach on the actuator yoke.
I
he most important considerations in the design of the bracket are as follows:
T
Series 195 feedback lever should be at 50% of valve stroke.
•
P
• Feedback level connection bar of actuator clamp should be connected in the
position so that the valve stroke and the numbers carved on feedback lever are
fitted.
f the bracket meets the above conditions, Series 195 can be installed very easily.
I
. Assemble Series 195 and bracket with bolts. Use standard bolts in bolt holes on
2
the backside of the unit.
Installation
OTICE
N
When the positioner is replaced or installed with the actuator,
make sure of the following:
• All inputs and supply pressure to the valve, actuator and other instruments must
be shut down.
The control valve must be separated from the system with a bypass valve or other
•
quipment so that the entire system does not shut down.
e
• No pressure remains in the actuator.
Tools For Installation
• Hexagonal wrenches
• (+) Screw driver
• (-) Screw driver
• Spanners for hexagon head bolts
Series 195 Installation
Series 195 is used for linear motion valves, such as Dwyer Instruments globe
valves, using a spring return type diaphragm actuator or piston actuator. The Series
195 consists of the following components. Be sure that all the components are
included.
• Series 195 main body
• Feedback lever and lever spring
• Flange nut (attached on the bottom of main shaft of Series 195 body)
• Four hexagon head bolts M8x1.25P
. After assembling Series 195 and bracket with bolts, attach it using the bolt holes
3
f the actuator yoke. Do not tighten completely. There must be some space.
o
4. Install the bar connected with Series 195’s feedback lever on the actuator clamp.
The slot length between Series 195’s feedback lever is .26˝ (6.5mm), so the
diameter of the connection bar should be less than .25˝ (6.3 mm).
5. Connect the air filter regulator with the actuator temporarily. Set supply pressure
of air filter so that the actuator clamp is positioned at 50% of valve stroke.
• Four M8 plate washers
Series 195 Installation Example
6. Insert the connection bar attached on the actuator clamp into the slot of Series
195’s feedback lever. In order to reduce hysteresis, it should appear as shown:
he connection bar inserted correctly between feedback lever and lever
0
1
00
50
90
°
50 %
50
SMART POSITIONER
10 20 30 40 50 60 70
10 20 30 40 50 60 70
N
o
T
o
u
c
h
!
20
T
pring
s
. Check that the Series 195’s feedback lever is level at 50% of valve stroke. If not,
7
ove the bracket or feedback link until it is level. Product linearity becomes work if
m
Series 195 is installed without being level at 50% of valve stroke.
8. Check the valve stroke. The numbers indicating the stroke are carved in the
eries 195’s feedback lever. Set the connection bar attached on the actuator clamp
S
o the number on the feedback lever applicable to the valve stroke, as shown in the
t
ollowing picture. To set the connection bar and the number, move the bracket
f
attached on Series 195 or connection bar from side to side.
age 3
. Once the Series 195 is installed according to the above procedures, tighten the
9
olts and nuts of the bracket and feedback lever connection bar completely.
b
eries 295 Installation
S
Series 295 is designed for rotary motion valves, such as Dwyer Instruments ball
and butterfly valves, using rack and pinion, scotch yoke or complex type actuators
whose stem is rotated 90°. Series 295 positioners consist of the following
omponents:
c
Series 295 main body
•
Fork lever and lever spring to attach on actuator
•
1 bracket
•
• Four hex bolts M8x1.25P
• Four M8 plate washers
eries 295 Installation Example of Fork Lever
S
P
Installation Position of Connection Bar for Valve Stroke
NOTICE
and 100%, the feedback lever should not reach to the lever stopper on the backside
of the Series 195 unit. If the feedback lever reaches the lever stopper, move
attachment of Series 195 away from the yoke center.
After installation, operate the valve from 0 to 100% stroke using
an air filter regulator on the actuator. When the stroke is both 0
Series 295 Installation Example of Namur Shaft
Installing Series 295 with Bracket
Series 295 is supplied with a standard bracket. The bracket consists of two parts
and is used with a NAMUR shaft. The bracket is assembled in the factory based on
.79˝ (20 mm) of actuator stem height. If the actuator stem height is higher, such as
1.18˝ (30 mm) or 1.97˝, use the table below to check hole positions.
Actuator Stem
Height (H)
20 mm
30 mm
50 mm
Ex) If H is 30 mm, A-L should be locked in H:30 hole, B-L in H:20, 30, A-R in H:30,
and H:20, 30 with bolts.
1. Typically actuator stem heights (H) are .79, 1.18, and 1.97 inches (20, 30, and
50 mm). After checking H, assemble brackets following previous guidelines. The
bracket is set at .79˝ (20 mm) in the factory.
2. Attach the bracket to the actuator using hex bolts. The diameter of the bracket
bolt holes is .24˝ (6 mm). Using spring washers or thread lock compound so the
bolts will not be loosened by vibration or impact. The direction of the bracket varies
by operating conditions, but normal direction is depicted in the following picture.
That is, when the piping of actuator and Series 295 is as shown in direction A, the
bracket hole and indicator attached on the bottom of the Series 295 main shaft
should be mounted in the same direction.
Markings of Bolt Holes
B-L
A-L
H: 20, 30
H: 20
H: 20, 30
H: 30
H: 50
H: 50
B-R
A-R
H: 20, 30
H: 20
H: 20, 30
H: 30
H: 50
H: 50
Actuator Stem (H)
Actuator
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