Series Mark Position Indicator/Switch/Transmitter

Flexible Design, Ideal for Corrosive Environments

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 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.

Models & Ordering

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Model Description Usually Ships Price Order
12AD0
Ships: Same Day
Price: $223.40
2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted black. Same Day $223.40 Order
12AD1
Ships: 1-2 Weeks
Price: $257.40
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. 1-2 Weeks $257.40 Order
12AL0
Ships: 1-2 Weeks
Price: $223.40
2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, lever drive, no visual indicator, aluminum, painted black. 1-2 Weeks $223.40 Order
12VD0-J1
Ships: 1-2 Weeks
Price: $240.90
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 $240.90 Order
14AD0
Ships: 1-2 Weeks
Price: $273.00
4 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted black. 1-2 Weeks $273.00 Order
14AD1
Ships: 1-2 Weeks
Price: $307.00
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. 1-2 Weeks $307.00 Order
14VD0-J1
Ships: 1-2 Weeks
Price: $290.50
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 $290.50 Order
15VD0
Ships: 1-2 Weeks
Price: $554.00
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. 1-2 Weeks $554.00 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. INMETRO Compliant: IM suffix, Certificate: NCC 13.02338 X; Marking: Ex ia IIC T4 Ga EM suffix, Certifcate: NCC 13.02339 X; Marking: Ex d IIC T6 Gb or Ex d IIC T5 Gb

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
91
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
Hart® Wireless 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
EM
FKM
FSL
IE
II
IM
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
Flame Proof InMetro
FKM Elastomers
Factory Sealed Leads
Flame Proof IECEx
Intrinsically Safe IECEx
Intrinsically Safe InMetro
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

Approvals

Drawings

Questions

Question
What two types of continuous signal feed back can Proximity provide with the position indicator?
Answer
Resistive (potentiometer) and current (transmitter).
Question
How many different size housings does Proximity provide for position indication? How many switches in a single housing?
Answer
Two sizes: 2-switch and 4-switch housings.
Question
What two basic types of position indication are provided with the Proximity position indicator?
Answer
Visual (mechanical) and electrical.
Question
What is the key feature of both Proximity position indicators and level switches that sets these products apart from all competitors?
Answer
Magnetic coupling.

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