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Mark
Series

Position Indicators/Switches/Transmitters


Mark 1 - Magnetic Coupling


Mark 3 - Multi Turn


Mark 4 - Thru-Shaft


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POPULAR MODELS
Model
Number
DescriptionPrice
12AD0  2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted black. £ 140.00
12AL0  2 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, lever drive, no visual indicator, aluminum, painted black. £ 140.00
12AD1  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. £ 163.00
14AD0  4 switches, SPDT snap, 15A @ 125/250/480 VAC, 1/8 hp @ 125 VAC, direct drive with stainless steel visual indicator, aluminum, painted black. £ 187.00
14AD1  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. £ 210.00
*Prices quoted exclude carriage and VAT which will be added where appropriate in accordance with legislation in force at the date of supply. E&OE. Orders are accepted subject to Dwyer Instruments Ltd Standard Terms and Conditions of Sales and none others whatsoever.
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COMPLETE MODEL CHART
Construction
 
 
 
 
 
 
 
Available Options "A"
signifies available with
corresponding
construction style.
1
 
 
 
 
 
Mark 1, Magnetic Coupling
3
 
 
 
 
 
Mark 3, Multi-Turn
Mark
4
 
 
 
 
 
Mark 4, Thru-Shaft
1
3
4
Output Type
 
1
 
 
 
 
1 Switch
A
-
A
 
2
 
 
 
 
2 Switches
A
A
A
 
3
 
 
 
 
Potentiometer, 1K Ohm. Available with Switch Types* B, C, I, O, R, S, V, W.
A
A
A
 
32
 
 
 
 
Potentiometer, 2K Ohm. Available with Switch Types* B, C, I, O, R, S, V, W.
A
A
A
 
35
 
 
 
 
Potentiometer, 5K Ohm. Available with Switch Types* B, C, I, O, R, S, V, W.
A
A
A
 
310
 
 
 
 
Potentiometer, 10K Ohm. Available with Switch Types* B, C, I, O, R, S, V, W.
A
A
A
 
320
 
 
 
 
Potentiometer, 20K Ohm. Available with Switch Types* B, C, I, O, R, S, V, W.
A
A
A
 
4
 
 
 
 
4 Switches
A
A
A
 
5
 
 
 
 
Transmitter, 4 to 20 mA. Available with Switch Types* B, C, I, O, R, S, V, W.
A
A
A
 
6
 
 
 
 
6 Switches. Available with Switch Types B, C, I, R, V, W.
A
A
A
 
7
 
 
 
 
AS-Interface and 1 Switch. Available with Switch Types B, I, R, W.
A
-
A
 
8
 
 
 
 
AS-Interface with 2 Switches. Available with Switch Types B, I, R, W.
A
-
A
Switch Type & Rating    
0
      No Switches

A

A
A
 
 
A
 
 
 
SPDT Snap, rated: 15 A @ 125/250/480 VAC; 1/8 hp @ 125 VAC; 1/4 hp @ 250 VAC; 1/2 A @ 125 VDC; 1/4 A @ 250 VDC.

A

A
A
 
 
B
 
 
 
Inductive Sensor. 10 to 30 VDC. Load: 0.1A.
A
-
A
 
 
C
 
 
 
SPDT High Temperature Snap, 350°F (176°C) for 600 hours, rated: 15.1 A @ 125/250/277 VAC.
A
A
A
 
 
D
 
 
 
DPDT Snap, rated: 10 A @ 125/250 VAC, 0.3 A @ 125 VDC, 0.15 A @ 250 VDC.
A
-
A
 
 
G
 
 
 
SPDT Gold Contact Snap, rated: 1 A @ 125 VAC.
A
A
A
 
 
H
 
 
 
SPDT Hermetically Sealed Snap, rated: 1 A @ 125 VAC.
A
-
A
 
 
I
 
 
 
NAMUR Inductive Sensor. 15 mA max @ 5-25 VDC.
-
-
A
 
 
M
 
 
 
SPDT Magnetic Blow-Out, rated: 10 A @ 125 VAC/DC; 1/4 hp @ 125 VAC/DC, 30 VDC; 125 VAC 10W (Lamp).
A
A
A
 
 
R
 
 
 
SPDT Hermetically Sealed Reed, rated: 3 A @ 125 VAC, 2 A @ 24 VDC.
A
-
A
 
 
S
 
 
 
SPDT Snap, rated: 4 A @ 125/250 VAC.
A
-
A
 
 
T
 
 
 
SPDT High Temperature Snap, 250°F (121°C) continuous, rated: 5 A @ 125/250/480 VAC.
A
A
A
 
 
V
 
 
 
SPDT Snap, rated: 10 A @ 125/250 VAC; 1/3 hp @ 125/250 VAC; 1/2 A @ 125 VDC, 1/4 A @ 250 VDC; 4 A @ 125 VAC (tungsten).
A
A
A
 
 
W
 
 
 
SPDT Gold Contact Snap, rated: 0.1 A @ 125 VAC.
A
A
A
Driving Method
 
 
 
D
 
 
Direct Drive (Yoke) with Stainless Steel visual indicator.

A

A
A
 
 
 
L
 
 
Lever Drive (Shaft). No visual indicator.
A
A
A
Enclosure
 
 
 
 
0
 
Aluminum, painted black (other colors available, consult factory).

A

A
A
 
 
 
 
1
 
Aluminum, painted white epoxy with SS trim.
A
A
A
 
 
 
 
6
 
Cast 316 Stainless Steel
A
A
A
Enclosure Options
 
 
 
 
 
J1
Junction Package with one 1/2" female NPT Conduit Connection and Terminal Strip.

A

A
A
 
 
 
 
 
J2
Junction Package with two 1/2" female NPT Conduit Connection and Terminal Strip.
A
A
A
 
 
 
 
 
S
SAA Listed Flameproof.
A
A
A
 
 
 
 
 
SV1
1 Attached Solenoid Valve (must be ordered with J1 option).
A
-
A
 
 
 
 
 
SV2
2 Attached Solenoid Valves (must be ordered with J2 option).
A
-
A
 
 
 
 
 
MT
Metric Threaded Conduit Connection, M25 (M20 for optional J1 and J2 connections).
A
A
A
 
 
 
 
 
B
Directive 94/9/EC, KEMA 03 ATEX 2391, II 2 G EEx d IIC T6 (-20°C ≤ Tamb ≤ 70°C) [T5 (-20°C ≤ Tamb ≤ 80°C) optional wording).
A
A
A
 
 
 
 
 
IS
Directive 94/9/EC, KEMA 03 ATEX 1392 x, II 1 G EEx ia IIC T4.
A
A
A
*Potentiometer and transmitter outputs will have no switches when ordered with switch type ), 2 switches if ordered with switch types B, C, I, R, V, or W, and 4 switches if ordered with switch type S. No other switch types are available.

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