Series Mark Position Indicators/Switches/Transmitters

Flexible Design, Ideal for Corrosive Environments

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 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.

Product Applications

Rotary valve actuators and dampers
Linear valve actuators and cylinders
Manual valves
Gear operators
Positioners

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Models & Ordering

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Mark 1 - Magnetic Coupling
Mark 4 - Thru-Shaft Drive
Custom Built Products

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

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Model	Description	Usually Ships*	Price	Order
12AD0 Ships: Next Day Price: $315.75	2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted black.	Next Day*	$315.75	Order
12AD1 Ships: 13-14 Weeks Price: $363.25	2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted white epoxy with SS trim.	13-14 Weeks*	$363.25	Order
12AL0 Ships: 13-14 Weeks Price: $315.75	2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, lever drive, no visual indicator, aluminum, painted black.	13-14 Weeks*	$315.75	Order
12VD0-J1 Ships: 1-2 Weeks Price: $340.50	2 switches, SPDT snap, 10A @ 125/250 VAC, 1/3 hp @ 125/250 VAC, direct drive with stainless steel visual indicator, aluminum, painted black, with junction package.	1-2 Weeks*	$340.50	Order
14AD0 Ships: 13-14 Weeks Price: $384.50	4 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted black.	13-14 Weeks*	$384.50	Order
14AD1 Ships: 13-14 Weeks Price: $432.00	4 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted white epoxy with SS trim.	13-14 Weeks*	$432.00	Order
14VD0-J1 Ships: 1-2 Weeks Price: $409.25	4 switches, SPDT snap, 10A @ 125/250 VAC, 1/3 hp @ 125/250 VAC, direct drive with stainless steel visual indicator, aluminum, painted black, with junction package.	1-2 Weeks*	$409.25	Order
15VD0 Ships: 7-8 Weeks Price: $767.00	4-20 mA transmitter, SPDT snap, 10A @ 125/250 VAC, 1/3 hp @ 125/150 VAC, direct drive with stainless steel visual indicator, aluminum, painted black.	7-8 Weeks*	$767.00	Order

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Specifications

: GENERAL
Product Rating:: Weatherproof and flameproof. NEMA 1, 2, 3, 3R, 3S, 4, 4X, 6, 7, 9, 12, 13. UL rated: Class I, Div. 1 & 2, Groups B, C, D (some units available for Group A, consult factory); Class II, Div. 1 & 2, Groups E, F, and G. CSA rated: Class I, Div. 1 & 2, Groups A, B, C, D; Class II, Div. 1 & 2, Groups E, F, and G; Submersible to 50 feet. Certified Ex d IIC T6 IP68 15 meters). ATEX Compliant: -B suffix, directive 2014/34/EU, KEMA 03 ATEX 2391, II 2 G Ex d IIC T6 for (-25/-40/-50°C = Tamb = 80°C optional wording) depending on output and switch type selected. -IS suffix directive 2014/34/EU, KEMA 03 ATEX 1392X, II 1 G Ex ia IIC T4. (Switch type C is not available with ATEX; Switch type B is not available with ATEX intrinsically safe, -IS suffix). IECEx Compliant: IE suffix, IECEx DEK II.0056X Ex d IIC T6 Gb for -25°C/-40°C/-50°C = Tamb = 70°C and T5 for -25°C/-40°C/-50°C = Tamb = 80°C. II suffix, IECEx DEK II.0061X II Ex ia IIC T4 Ga. Compliant per EN 60079-0:2007 EN 60079-11:2006 and EN 60079-26:2006.
: Switch Outputs (Mark 1, 3 and 4)
Temperature Limits:: -58 to 176°F (-50 to 80°C). Switch Type C rated to 350°F (176°C) for 600 hours; Switch Type T rated to 250°F (121°C) continuous. [ATEX flameproof, -B suffix, rated -50 to 80°C (-58 to 176°F) for switch type A, G, H, T, or M; -40 to 80°C (-40 to 176°F) for switch type O, R, S, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, I, or AS interface; ATEX intrinsically safe, -IS suffix, rated -25 to 40°C (-13 to 104°F) for switch type D or I; -40 to 40°C (-40 to 104°F) for switch type R, V, or W or -50 to 40°C (-58 to 104°F) for switch type A, G or H.]
Switch Type:: See Model Chart page.
Electrical Rating:: See Model Chart page.
Set Point Adjustment:: Mark 1 and 4: 5 to 360°.
: Potentiometer (Mark 1, 3 and 4)
Accuracy:: ±0.5% of full span. Optional ±0.25% of full span.
Temperature Limits:: -40 to 176°F (-40 to 80°C). [ATEX flameproof, -B suffix, rated -40 to 80°C (-40 to 176°F) for switch type A, G, M, O, R, S, T, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, or I; ATEX intrinsically safe, -IS suffix, rated -25 to 40°C (-13 to 104°F) for switch type I; -40 to 40°C (-40 to 104°F) for switch type O, R, S, V, or W].
Power Rating:: 1.5 watt maximum.
Output Signal:: 1000Ω standard. Optional 2000, 5000, 10000, or 20000 Ω.
Zero and Span Adjustments:: Span trim pot with 2000Ω adjustment. No zero adjustment.
Rotational Travel:: Mark 1 and 4: Minimum 0°, Maximum 340°; Mark 3: 0 to 10 revolutions.
: Transmitter (Mark 1, 3 and 4)
Accuracy:: ±0.5% of full span. Optional ±0.25% of full span.
Temperature Limits:: -40 to 176°F (-40 to 80°C). [ATEX flameproof, -B suffix, rated -40 to 80°C (-40 to 176°F) for switch type A, G, M, O, R, S, T, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, or I; ATEX intrinsically safe, -IS suffix, rated -25 to 40°C (-13 to 104°F) for switch type I; -40 to 40°C (-40 to 104°F) for switch type O, R, S, V, or W].
Power Requirements:: 5 to 30 VDC.
Current Consumption:: 50 mA.
Output Signal:: 4 to 20 mA.
Zero and Span Adjustments:: Trim pots for adjusting both. Mark 1 and 4: Span is adjustable from 50 to 300°; Mark 3: Span is adjustable from 1.5 to 8.5 revolutions.
Conduit Connection:: 3/4" female NPT standard. Optional one or two 1/2" female NPT. M25 X 1.5 and M20 X 1.5 optional.
Rotational Travel:: Mark 1 and 4: Minimum 50°, Maximum 300°; Mark 3: Minimum: 1.5 revolutions, Maximum: 8.5 revolutions.
: Transmitter w/HART® (Mark 1, 3 and 4)
Accuracy:: ±0.25% of full span.
Temperature Limits:: -40 to 176°F (-40 to 80°C). [ATEX flameproof, -B suffix, rated -40 to 80°C (-40 to 176°F) for switch type A, G, M, O, R, S, T, V, or W; -25 to 80°C (-13 to 176°F) for switch type B, D, or I].
Power Requirements:: 8 to 30 VDC.
Current Consumption:: 21 mA.
Output Signal:: 4 to 20 mA.
HART® Receive Impedance:: Rx = 500 kohm; Cx = 2500 pF.
Zero and Span Adjustments:: Pushbuttons or HART® master for setting both. Mark 1 and 4: Span is adjustable from 0 to 330°; Mark 3: Span is adjustable from 1.5 to 8.5 revolutions.
Conduit Connection:: 3/4" female NPT standard. Optional one or two 1/2" female NPT. M25 and M20 optional.
Rotational Travel:: Mark 1 and 4: Maximum 330°; Mark 3: Minimum: 1.5 revolutions, Maximum: 8.5 revolutions.

Features

MARK 1
- Features a magnetic coupling that isolates the switch compartment, completely sealing the unit from the surrounding atmosphere for maximum hazard and leak protection.
- EZset cams on switch models provide simple set point adjustment.
- Flexible design allows multiple switches and transmitter options.
- Ideal for corrosive environments.
MARK 3
- Features a magnetic coupling that isolates the switch compartment, completely sealing the unit from the surrounding atmosphere for maximum hazard and leak protection.
- Multi-Turn models that can provide switch signals between 1 and 25 revolutions, and transmitter models for up to 10 revolutions without gear reduction.
- Flexible design allows multiple switches and transmitter options.
- Ideal for corrosive environments.
MARK 4
- Thru-Shaft design that features a 1" bearing for long life and o-rings to seal the switch compartment for hazard, corrosion, and leak protection.
- EZset cams on switch models provide simple set point adjustment.
- Flexible design allows multiple switches and transmitter options.
- A lower cost alternative to the Mark 1 Series for less demanding applications.

Options

JUNCTION PACKAGE: Complete factory assembled packages combine visual indication, solenoids, switches and transmitter in a single convenient UL, CSA, ATEX, or SAA certified assembly which saves labor and reduces cost. The simple package is shipped ready for installation, complete with a custom designed mounting kit for your specific application. Many options are available such as painted aluminum, epoxy coated aluminum or stainless steel housings including a standard 3/4" NPT conduit entrance and choice of 1 or 2 additional 1/2" NPT conduit entrances. The optional conduit entrances are drilled and tapped in the base of the position indicator housing and solenoid valves are screwed into the entrances. 22 to 16 AWG wire leads from solenoids, switches and optional transmitter are terminated in prelabeled, easy-access terminal strips protected inside the housing. Note: UL, CSA, ATEX or SAA approval requires complete package assembly by Proximity. Consult the factory for recommended UL, CSA, ATEX or SAA approved solenoid valve options.
FACTORY SEALED LEADS: Eliminate the possibility of conduit contamination and the need for seal fittings with Proximity's factory sealed (potted) leads. This seal has been UL tested to 6000 psi (422 kg/cm²) and listed for Class I, Groups A, B, C, D; Div. 1 & 2 atmospheres. Groups may vary depending on the switch model. Standard leads are 18 AWG and 36" (91.44 cm) long.
AS-INTERFACE: AS-Interface allowing networking of up to 31 devices over a 2-wire network. Option for Mark 1 Magnetic Drive and Mark 4 Thru-Shaft Valve Position Indicators. Available with 1 or 2 incoroprated solenoid valves.
MOUNTING KITS: Mounting kits with drive yoke or slotted lever arm, bracket, fasteners and other zinc plated or stainless steel hardware fit over 2000 popular valves and actuators. A high strength spring tempered Monel drive yoke/coupling is tailored to fit securely to a specific valve or actuator stem. There is no slippage or binding. No special alignment fixtures are required due to switch offset design and yoke to stem engagement that makes installation a "snap". Each kit is specially designed for a particular valve or actuator; making field mounting simple with standard tools. Please specify make and model of valve or actuator on order.
Mounting kits can be used interchangeably with all models since external mounting features are identical. Rotary valves utilize direct drive couplings and a slotted lever drive is used with linear valves. Lever drives convert linear motion to rotary. Stainless steel visual indicators are standard for direct drive, automated quarter-turn valve applications.

Videos

Model Chart

EXAMPLE	1	2	V	D	0	STR			Series 12VD0-STR Mark 1, 2 switches, SPDT snap switch, direct drive with visual indicator, aluminum painted black, with riveted stainless steel tag.
TYPE OF CONTROL	1 3 4								Mark 1 Magnetic Coupling Mark 3 Multi-Turn Mark 4 Thru Shaft
OUTPUT DATA		1 2 3 4 5 6 7 8 9 31 32 35 51 52 310 320							1 Switch 2 Switches Potentiometer, 1K Ohm, 1/4% 4 Switches 4-20 mA Transmitter, 1K Ohm Pot, 1/2% 6 Switches AS-Interface & 1 Switch AS-Interface & 2 Switches Hart® Communication Transmitter Potentiometer, 1K Ohm, 1/4% Potentiometer, 2K Ohm Potentiometer, 5K Ohm 4-20 mA Transmitter, 1K Ohm Pot, 1/4% 4-20 mA Transmitter, 2K Ohm Pot Potentiometer, 10K Ohm Potentiometer, 20K Ohm
SWITCH DATA			A B C D G H I M N O R S T V W						SPDT Snap, 15A @ 125/250VAC, 0.5A @ 125VDC, 5A @ 24VDC Inductive Sensor, 10-30VDC, Load 0.1A (Mark 1, Mark 4 only) SPDT High Temp. Snap, 15.1A @ 125/250/277VAC (Mark 1, Mark 4 only) DPDT Snap, 10A @ 125/250VAC, 0.3A @ 125VDC, 0.15A @ 240VDC (Mark 1, Mark 4 only) SPDT Gold Contact Snap, 1A @ 125VAC SPDT Hermetically Sealed Snap, 1A @ 125VAC (Mark 1, Mark 4 only) NAMUR Inductive Sensor, 15mA max. @ 5-25VDC (Mark 1, Mark 4 only) SPDT Magnetic Blow-Out, 10A @ 125VAC/DC, 1/4 HP @ 125VAC/DC SPDT MIL-S-8805, 15A @ 125/250VAC, 0.5A @ 24VDC (Mark 1, Mark 4 only) No Switches SPDT Hermetically Sealed Reed, 2A @ 125VAC, 2A @ 24VDC (Mark 1, Mark 4 only) SPDT Snap, 4A @ 125/250VAC (Mark 1, Mark 4 only) SPDT High Temp. Snap 250°F (121°C), 5A @ 125/250/480VAC SPDT Snap, 10A @ 125/250VAC, 0.5A @ 125VDC, 0.25A @ 250VAC SPDT Gold Contact Snap, 0.1A @ 125VAC
DRIVING METHOD				A D E L M					Direct Drive without Visual Indicator Direct Drive with Visual Indicator Direct Drive with Visual Indicator, Single Side Window Lever Drive without Visual Indicator Lever Drive with Visual Indicator
HOUSING MATERIAL & FINISH					0 1 2 6 8				Aluminum, Painted Black Aluminum, Painted White Epoxy with SS Trim Aluminum, Painted Red Cast 316SS Aluminum Painted Textured Gray
OPTIONS						B C1 C2 FKM FSL IE II IS J1 J2 MT PP PT SS STR STW SUB SV1 SV2			Directive 2014/34/EU, KEMA 03 ATEX 2391 Long Dwell Cam Double Cam FKM Elastomers Factory Sealed Leads Flame Proof IECEx Intrinsically Safe IECEx Directive 2014/34/EU, KEMA 03 ATEX 1392x Intrinsically Safe Junction Package with 1/2" Female NPT & Terminal Strip Junction Package with (2) 1/2" Female NPT & Terminal Strip Metric Threaded Conduit Connection, M25 Plug J1, J2 Ports Paper Tag Stainless Steel Conduit Plug(s) Stainless Steel Tag, Riveted Stainless Steel Tag, Wired Submersible Certification One Attached Solenoid Valve Two Attached Solenoid Valves
INDUCTIVE SENSOR							E0 E2 Z4 Z5		P & F NBB2-V3-E0 P & F NBB2-V3-E2 P & F NBB3-V3-Z4 P & F NBB3-V3-Z5
SOLENOID VALVE								S01 S02 S03 S04 S10 S11 S12 S13 S14 S15	Skinner 71335SN2GNJ1NOH111C2 Skinner 71335SN2GNJ1NOH111C1 Skinner 71315SN2KNJ1NOH111C2 Skinner 71315SN2KVJ1NOH111C2 Asco EF8320G202, 24VDC Asco EF8317G308, 24VDC Asco EF8317G308, 12VDC Asco EF8321511, 24VDC Asco EF8316G54, 120VAC Asco EF8320G184, 24VDC