MODEL: VOS-E

http://www.m-system.co.jp/

VOS-E SPECIFICATIONS

ES-4763 Rev.9 Page 1/4

Position Sensors

2-WIRE POSITION TRANSMITTER

(flameproof, linear motion type)

Functions & Features

• Differential transformer incorporated

• Light weight and compact design

• High resolution

• Zero & Span adjustable without opening the cover

• Direct or reverse action selectable

Typical Applications

• Detecting stroke positions of a valve actuator or moving

positions of other mechanisms and transmits standard 4 to

20 mA DC proportional to the position

226 (8.90)

mm (inch)

MODEL: VOS–E–[1][2][3][4]]5]

ORDERING INFORMATION

Code number: VOS-E-[1][2][3][4][5]

Specify a code from below for each [1] through [5].

(e.g. VOS-E-1321/C/R1)

[1] ACTION

1: Direct

(output increases with counterclockwise lever operation)

2: Reverse

(output decreases with counterclockwise lever operation)

Note: Counterclockwise if seen from the upper (cover) side.

[2] WIRING CONDUIT

3: G 1/2 (located at the right side)

4: G 1/2 (located at the left side)

5: 1/2 NPT fitting (located at the right side)

6: 1/2 NPT fitting (located at the left side)

[3] LEVER

1: Stroke 10 – 30 mm (0.39" – 1.18")

2: Stroke 30 – 100 mm (1.18" – 3.94")

3: Stroke 25 – 60 mm (0.98" – 2.36")

[4] LEVER POSITION

1: Upper side

2: Lower side

[5] OPTIONS (multiple selections)

Clamp Set

blank: Without

/C: With Clamp set

Applicable cable dia.

blank: 6 < dia. ≤ 8

/R1: 8 < dia. ≤ 10

/R2: 10 < dia. ≤ 12

GENERAL SPECIFICATIONS

Degree of protection: IP55

Action: Direct or reverse; field selectable by change of the

jumper pins' positions

Wiring conduit: G 1/2 or 1/2 NPT female

Cable gland: Flameproof packing (direct lead)

Connection: M3.5 screw terminals (torque 0.8 N·m)

Material

Housing: Cast aluminium

Position sensor: PBT (30 % fiber glass)

Painting color: Silver

Isolation: Output to metal housing

Zero adjustment: -5 – +5 % of effective rotating angle

Span adjustment: 60 – 105 % of effective rotating angle

INPUT SPECIFICATIONS

Input: Mechanical rotating angle

Effective rotating angle: -22.5 – +22.5° (45°)

Maximum rotating angle: -27.5°– + 27.5°(55°)

Torque: 0.324 N·m (0.239 ft·lbf)

OUTPUT SPECIFICATIONS

Output: 4 – 20 mA DC

Output impedance: 1 MΩ min.

Load resistance v.s. supply voltage:

Load Resistance (Ω) = (Supply Voltage (V) – 12 (V)) ÷ 0.02

(A)

(including leadwire resistance; refer to the graph)

Output characteristics: Proportional to the sine of rotating

angle of the lever