| Intrinsic Safety |
|
ATEX approval |
The sensor is ATEX approved to II 1G EEx ia IIC T4 (Ta = -40°C to +80°C). This designates the sensor as belonging to; Group II: suitable for all areas except mining, Category 1 G: can be used in areas with continuous, long or frequent periods of exposure to hazardous gas (Zone 0). Protection class ia, denotes intrinsically safe for all zones. Apparatus group IIC: suitable for IIA to IIC explosive gas. Temperature class T4: maximum sensor surface temperature under fault conditions 135°C. Ambient temperature range extended to -40°C to 80°C.
|
Galvanic Barrier |
Intrinsically safe sensors must be used with a galvanically isolated barrier with safety parameters not exceeding:- Ui: 11.4V, Ii: 0.46A, Pi: 0.51W. Sensor can be installed with a cable length up to 150m maximum from the barrier, capacitance and inductance can be up to:- Capacitance: 550 nF max, Inductance: 99 μH max.
Approved barriers are available from Positek; there is a
choice of 0.5-9.5V or 4-20mA transmission outputs. The sensor is calibrated to suit the selected barrier transmission output.
|
| Sensor Specification |
|
| Dimensions |
|
|
Body Diameter
|
35mm |
|
Body Length (to seal face)
|
43mm |
|
Probe Length (from seal face)
|
Measurement length
+ 58mm |
|
Target Tube Length
|
Measurement length +30mm, ID
7.7mm, OD 9.45mm |
|
|
|
|
Travel
|
any stroke from 20 mm to 600mm
(eg 305mm) |
|
Independant Linearity
|
<±0.25% up to 450mm <±0.50%
over 450mm at 20°C |
|
Temperature Coefficient
|
<±0.01%/°C Gain &
<±0.01%FS/°C Offset |
|
Typical Overall Accuracy
|
<±0.75%/FSO
 |
|
Resolution
|
Infinite |
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Noise
|
<0.02% FSO |
|
Frequency Response
|
>10KHz (-3dB) |
|
|
|
Temperature Limits
|
|
|
Operating
|
-40 to +80°C |
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Storage
|
-40 to +125°C |
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EMC Performance
|
|
|
Susceptibility
|
EN 61000-6-2 |
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Radiated
|
EN 61000-6-3 |
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|
|
|
Vibration
|
IEC 68-2-6: 10g |
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Shock
|
IEC 68-2-29: 40 g |
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MTBF
|
350,000 hrs 40°C Gf |
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Hydraulic Pressure
|
350 Bar |
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Sealing
|
IP65(connector) / IP67(cable) |
|
|
|
|
Electrical Connections
|
Screened 3 core cable or integral
connector |
|
Target
|
A non-magnetic target tube is
supplied with the sensor. This can be eliminated if the piston
rod is made from non-magnetic steel and is drilled to a specified
tolerance. |
|
Dimensions
|
Refer to drawings below. |
Barrier |
 |
Outline |
Request AutoCAD Drawing |
|
Typical Installation in Cylinder
|
Request
AutoCAD Drawing |
|
Sealing Details
|
Request
AutoCAD Drawing |
|
Target Details Fitting
|
Request
AutoCAD Drawing |
