Dwyer VPT - Manual

Bulletin V-VPT
The Series VPT Valve Position Transmitter is an ideal way to track
position of valve. With both linear and rotary motion monitoring available,
this Valve Position Transmitter can suit a wide variety of applications.
Using a resistance gear in conjunction with a potentiometer, the change
in resistance outputs a proportional current signal which is sent to the
controller. The standard LCD display allows operator to monitor the
precise position of valve.
Series VPT Parts and Assembly
Below is the assembly for the VPT-LA1 and VPT-RA1, with the only
difference being the feedback lever.
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: 0 to 30°(LA1); 0 to 90°(RA1).
Output Signal: 4 to 20 mA DC.
Supply Voltage: 9 to 28 VDC.
Enclosure: Aluminum.
Electrical Connection: M20 cable gland.
Linearity: ±1% FS.
Hysteresis: ±0.2% FS.
Sensitivity: ±0.2% FS.
Enclosure Rating: IP67.
Operating Temperature: -22 to 185°F (- 30 to 85°C).
Weight: 1.3 lb (0.6 kg).
Specifications - Installation and Operating Instructions
™
Series VPT Positioner Transmitter
20 40 30
LCD LCD
VPT-L VPT-R
2-29/32
[74.00]
2-11/64
[55.00]
45/64
[17.80]
2-1/16
[52.50]
3-49/64
[95.50]
3-7/8
[98.60]
1-3/8
[35.00]
61/64
[24.30]
2-11/64
[55.00]
2
6
°
[
M
A
X
.
3
4
°
]
13°
2-29/32
[74.00]
BASE COVER
PCB BOARD
POSITION
BLIND PLUG
BASE BODY
FEEDBACK SPRING
FEEDBACK LEVER
CABLE CONNECTOR
MAIN GEAR
TRANSMETTER ASS'Y
MAIN SHAFT
COVER BOLT