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E112 Gauge Head Position Sensor
Intrinsically Safe sensors for Hazardous DUST atmospheres

Available in any travel from 10mm to 50mm.

Specification

Intrinsic Safety

 

ATEX approval

The sensor is ATEX approved to Ex II 1GD EEx ia IIC T4 Ex iaD 20 T135°C (Ta = -40°C to +80°C).  This designates the sensor as belonging to; Group II: suitable for all areas except mining, Category 1 GD: can be used in areas with continuous, long or frequent periods of exposure to hazardous gas (Zones 2 to 0) and dust (Zone 20).

Gas:

Protection class ia, denotes intrinsically safe for all zones.

Apparatus group IIC: suitable for IIA, IIB and IIC

explosive gases.

Temperature class T4: maximum sensor surface

temperature under fault conditions 135°C.

Dust:

T135°C: maximum sensor surface temperature under

fault conditions 135°C.

Ambient temperature range extended to -40°C to

+80°C.

Galvanic Isolation Amplifier

Intrinsically safe sensors must be used with a galvanically isolated amplifier with safety parameters not exceeding:- Ui: 11.4V, Ii: 0.2A, Pi: 0.51W.  Sensor can be installed with a cable length up to 1000m maximum from the amplifier, capacitance and inductance can be up to:- Capacitance: 550 nF max, Inductance: 99 μH max.

Approved amplifiers are available from Positek; there is a

choice of 0.5-9.5V or 4-20mA transmission outputs.

Sensor Specification

 

Dimensions

 

Body Diameter

19mm

Body Length

205mm excluding thread

Mounting Thread Length

59mm

Spring Force

1.5-4.5N (Approximatly)

Travel

any stroke from 10 mm to 50mm (eg 19mm)

Independant Linearity

<±0.25% @ 20°C

Temperature Coefficient

<±0.01%/°C Gain & <±0.01%FS/°C Offset

Resolution

Infinite

Noise

<0.02% FSO

Frequency Response

>10KHz (-3dB)

 

 

Temperature Limits

 

Operating

-40 to +80°C

Storage

-40 to +125°C

EMC Performance

 

Susceptibility

EN 61000-6-2

Radiated

EN 61000-6-3

 

 

Vibration

IEC 68-2-6: 10g

Shock

IEC 68-2-29: 40 g

MTBF

350,000 hrs 40°C Gf

Sealing

IP67

 

 

Electrical Connections

Screened 3 core cable or integral connector

Detailed Dimensions

Refer to drawings below

Galvanic Isolation Amplifier

 

Outline

  Request AutoCAD Drawing

 

 

 

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  Positek Limited

L6 The Link   Andoversford Industrial Estate   Cheltenham   Glos GL54 4LB   UK
Tel: +44 (0)1242 820027   Fax: +44 (0)1242 820615   sales@positek.com
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