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Dwyer Instruments, Inc.Michigan City, IN
 
E-mailE-mail CompanyComputer and GlobeVisit WebsitePhone
Phone: 219-879-8000
Fax: 219-872-9057
 
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 Series VPI
Valve Position Indicator
Low Cost, Mechanical or Proximity Limit Switches
 
The Series VPI Rotary Valve Position Indicators are compact yet rugged for confined and severe locations. These versatile units offer visual position indication as well as two internal limit switches. The spring-loaded splined cams require no tools for a quick and precise adjustment. The Series VPI is available with mechanical or proximity limit switches. The mechanical models feature two SPDT limit switches. The proximity models feature two solid-state inductive limit switches eliminating the need for the cams to make contact with the switches. The NEMA 6 (IP67) rating ensures protection against the ingress of liquid and debris.
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 Series QV
Quick-View® Valve Position Indicator/Switch
Ultra-Low Cost, Compact, Backlit, Corrosion Resistant
 
The QUICK-VIEW® Rotary Valve Position Indicators, now UL and CSA rated, are produced by Proximity with up to four individual mechanical or proximity switches. The QUICK-VIEW® indicator is also available with optional backlighting.
 
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 Mark Series
Position Indicator/Switch/Transmitter
 
The Proximity Mark Series is a line of position indicators with a selection of various output options. Four model styles make up the Mark series to cover almost any application. Standard models in the Mark Series have visual position indicators and are weatherproof, explosion-proof, and submersible. A large variety of outputs are available to fit specific applications. There is a choice of 1 to 6 switch outputs of 16 varieties including inductive sensors, high temperature switches, gold contact switches, hermetically sealed switches, and high current switches. Besides the switch outputs, the Series offers potentiometer outputs, transmitters, and HART® Communications. The units are purchased for either direct drive applications, such as rotary valves, or lever drive applications, such as linear valves. Adjustable visual indicator is standard on direct drive units that displays OPEN/CLOSED status and degrees.
 
A magnetic drive that completely seals the switch compartment from the atmosphere for maximum leak protection is utilized in the Mark 1. The Mark 3 uses the same magnetic drive of the Mark 1, but it can be used for multi-turn applications with 1 to 25 revolutions, such as gate valves. A through shaft drive is incorporated in the Mark 4 making the unit a lower cost alternative to the Mark 1 for applications that are not as demanding.
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 Series VPS
Valve Position Sensor
Dual Inductive, 2-Wire AC/DC Sensor, Fully Adjustable Target in 2° Increments
 
The dual inductive, 2-wire AC/DC Series VPS Valve Position Sensor maintains VDI/VDE 3845 dimensions so positioners can be easily mounted on top of the sensor and target. The Model VPS2411 Sensor and Model P1 Target mount easily and directly to actuators with ISO NAMUR topworks. Fully adjustable target in 2° increments, the sensor has two independent LED's and bright Flow Line indicator that provide local visual indication. All electrical connections are made with the Model VIP82 4-pin quick disconnect cable (6 ft in length), for ease in installation. Solid state components are fully embedded in an epoxy resin to prevent condensation build-up and to protect against vibration and shock. The rugged PBTP housing provides excellent corrosion resistance and moisture protection.
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 Series DT
Detector Position Sensor
Reliable Magnetic Point Sensor, Stainless Steel Housing, AC or DC
 
The Series DT Detector Position Sensors are reliable, magnetically actuated, stainless steel, completely interchangeable with competitive units and AC or DC for user friendly operation. They have no moving parts, eliminate costly seal fittings and offer enhanced reliability by eliminating arcing. Unintentional actuation by metals is not a problem.
 
 
The sensor consists of a durable hermetically sealed reed switch potted in stainless steel housing and a separate 316 stainless steel magnetic actuator bolt. Sensing distance is 0.1" (2.54 mm) for the standard actuator. Greater sensitivity of a larger magnetic actuator increases the sensing distance to 0.5" (12.7 mm).
 
The Detector is excellent for hazardous and corrosive environments, solid state and intrinsically safe applications, and may be mounted in any in any position. For installation in hazardous locations be sure to check local electrical codes. The Detector meets NEMA 1, 3, 4, 4X, 6, 7, 9, 12 and 13; and is certified Class I, Groups A, B, C and D; Class II, Groups E, F and G, Divisions 1, 2 and 3, and IP68 submersible.
 
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