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Product catalog summary

Introduction
Proximity Controls, a division of Dwyer Instruments, Inc., specializes in position indicators and level controls, known for its patented magnetic drive technology. Acquired by Dwyer Instruments in 1989, the company continues to innovate with products like Quick-View® and Detector™ position indicators.

Customer Service and Technical Support
Proximity Controls offers expert technical support with a team of engineers, prompt customer service, quick order processing, and flexible shipping options. Discounts are available based on purchase quantities, and a large inventory ensures fast delivery.

Standard Terms & Conditions of Sale
Prices and specifications are subject to change. Shipping dates depend on credit approval, with terms of net 30 days for established credit accounts. All materials are sold EXW Ex Works, and taxes are the buyer's responsibility. Compliance with U.S. trade regulations is required.

Warranty and Remedies
Dwyer Instruments provides a limited one-year warranty from the shipment date, covering defects in workmanship or materials. Liability is limited to repair, replacement, or refund, excluding misuse or alterations.

Product Overview
The Mark Series includes position indicators with various output options, suitable for direct and lever drive applications. Models include Mark 1 for direct drive, Mark 3 for multi-turn applications, and Mark 4 as a cost-effective alternative. Each model offers flexible design options, including multiple switches and transmitter outputs.

Specifications and Options
Factory-assembled packages combine visual indicators, solenoids, switches, and transmitters in certified assemblies. Options include various housing materials and conduit entrances, with easy-access terminal strips for wiring.

Specifications
Position indicators are weatherproof, explosion-proof, and submersible, with approvals from ATEX, CSA, IECEx, INMETRO, and UL. They feature magnetic coupling for maximum leak protection and support a range of electrical connections.

Features
The Mark series includes visual position indicators, multiple switch outputs, potentiometer outputs, transmitters, and HART® communications. Suitable for direct and lever drive applications, with adjustable visual indicators.

Applications
Indicators are ideal for rotary and linear valve actuators, manual valves, gear operators, and positioners. Mark 1 is suited for direct drive, Mark 3 for multi-turn, and Mark 4 for less demanding applications.

Benefits
Devices offer flexible design options, easy installation, and adjustment features like set screw cams for infinite adjustment.

Popular Models
Popular models include Mark 1 with SPDT switches and Mark 4 with HART transmitters.

Technical Data
Includes operational life, temperature limits, power requirements, and output signals. Provides accuracy and adjustment capabilities of potentiometers and transmitters.

Potentiometers and Transmitters
Potentiometers with resistances of 10 KΩ and 20 KΩ, available with or without switches. Transmitters in 4 to 20 mA configurations, with HART® compatibility.

Switch Types and Ratings
Includes SPDT, DPDT, and inductive sensors with specific electrical ratings. High-temperature and hermetically sealed options available.

Mounting Kits and Enclosures
Mounting kits compatible with a wide range of valves and actuators. Enclosure options include aluminum and stainless steel.

Position Indicators
Series VPI and QV indicators offer mechanical and proximity limit switches, with features like NEMA 6 (IP67) ratings and optional backlighting.

Applications and Features
Components used in rotary and linear valves, actuators, and dampers. Key features include rugged construction and corrosion resistance.

Valve Positioners
Detailed specifications and features of various valve positioners, including Series VPT, 165, 265, 275, and 185. Each series offers unique features for precise control and monitoring.

Smart Positioners and Transducers
Technical specifications and features of smart positioners and current to pressure transducers, designed for controlling valve operations in harsh environments.

Safety Ratings
Intrinsically safe and explosion-proof ratings for hazardous environments, including Class I, II, and III, Division 1 and 2.

Actuator Models and Types
Includes actuator models SN-3X and SN-5X, with Double Acting and Spring Return types.

International Customers and Contact Information
Local distributors in over 50 countries, with contact information for corporate headquarters and regional offices.

Ordering and Support
Emphasizes ease of ordering and availability of local support globally, with technical support and literature requests.

Catalog excerpts

INTRODUCTION Proximity Controls was started in 1965 out of a garage in Fergus Falls, MN. The first product line was the Ultra-MagTM Series of diaphragm level controls. The Ultra-MagTM offers a unique and patented magnetic drive that seals the switch compartment. Building on their experience with magnetic drives, Proximity expanded into position indicators in 1977 with the invention of the Mark Series. Like the Ultra-MagTM, the Mark Series offers a patented magnetic drive that completely seals the switch compartment. Proximity Controls was acquired in 1989 by Dwyer Instruments of Michigan City,...

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CUSTOMER SERVICE FRIENDLY AND FAST REAL PEOPLE Courteous and professional customer service representatives are available via phone and email to process and provide assistance with your order. Dwyer provides industry leading response time to answer your call quickly without making you wait. PRICING Contact us for formal quotes, Dwyer offers bids and project quotes. Discounts are available for particular customer types based on quantities purchased. PRODUCT DELIVERY PROMPT AND ACCURATE LARGE INVENTORY LOCATED CENTRALLY IN THE U.S. Dwyer is committed to get you your order quickly with more than...

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Dwyer Instruments, Inc. - Discount Schedule Dwyer Instruments, Inc. - Standard Terms and Conditions of Sale 1. Prices and Specifications are subject to change without notice. 2. Shipping dates are approximate. They are dependent upon credit approval and subject to delays beyond our control. 3. Terms: Net 30 days to companies with established credit rating. In the event Buyer fails to fulfill previous terms of payment, or in case Seller shall have any doubt at any time as to Buyer’s financial responsibility, Seller may decline to make further deliveries except upon receipt of cash in advance or...

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MARK SERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6 MARK 1, ROTARY POSITION INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 MARK 3, ROTARY POSITION INDICATOR . . . . . . . . . . . . . . . ....

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Position Indicators/Switches/ Transmitters The Proximity™ Mark Series is a line of position indicators with a selection of various output options. Three 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...

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POSITION INDICATORS/SWITCHES/TRANSMITTERS Series Mark Position Indicators/Switches/ Transmitters ® HART Communications • Available on Mark 1, 3, and 4 model indicators • 4 to 20 mA analog position transmitter with HART® communications • HART® features include: • Digital indication of position • 4 digital programmable position switches • Calibration of zero and span at the device from pushbuttons or through HART® master • Indication of sensor failure, programmable to 3.8 or 21 mA • Programmable dampening • Self test Junction Package Complete factory assembled packages combine visual indication,...

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Rotary Position Indicator Magnetically Coupled Switches and Transmitters Ideal for Corrosive Environments 5-5/16 POSITION INDICATORS/SWITCHES/TRANSMITTERS 01/8 [3.18] PIN TYP 2 PLACES '1/2 NPT CONDUIT CONNECTION (OPTIONAL) OR OPTIONAL M20 2 PLACES -1/4-20 UNC THREAD X 7/16 [11.11] DP TYP 2 PLACES BENEFITS • The switch compartment is completely isolated from atmosphere. • A magnetic coupling completely seals the switch compartment for maximum hazard and leak protection, (IP68 and submersible to 50 feet indefinitely). • Set screw cams provide infinite adjustment, and user-friendly manual cams provide...

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Rotary Position Indicator Multi-Turn Switches and Transmitters Ideal for Corrosive Environments © ® El £ £ CLEARANCE REQUIRED FOR COVER REMOVAL DIRECT DRIVE 3/4 NPT CONDUIT CONNECTION OR OPTIONAL M25 01/8 [3.18] PIN TYP 2 PLACES '1/2 NPT CONDUIT CONNECTION (OPTIONAL) OR OPTIONAL M20 2 PLACES BENEFITS • The switch compartment is completely isolated from atmosphere. • A magnetic coupling completely seals the switch compartment for maximum hazard and leak protection, (IP68 and submersible to 50 feet indefinitely). • Switch signals are provided between 1 and 25 revolutions. Transmitter output is...

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Rotary Position Indicator Thru-Shaft Switches and Transmitters Ideal for Corrosive Environments [115.89] | POSITION INDICATORS/SWITCHES/TRANSMITTERS 01/8 [3.18] PIN TYP 2 PLACES 1/2 NPT CONDUIT CONNECTION (OPTIONAL) OR OPTIONAL M20 2 PLACES -1/4-20 UNC THREAD X 7/16 [11.11] DP TYP 2 PLACES BENEFITS • A shaft through a 1" bushing and O-ring seals the switch compartment for hazard, corrosion and leak protection, (IP68 submersible). • Set screw cams provide infinite adjustment, and user-friendly manual cams provide single-step rotational adjustment and locking set screw. • Flexible design allows...

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POSITION INDICATORS/SWITCHES/TRANSMITTERS Series Mark Position Indicators/Switches/ Transmitters The Proximity™ Mark Series is a line of position indicators with a selection of various output options. Three 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 14 varieties including inductive sensors, high temperature switches, gold contact...

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