E100 In-Cylinder Linear Position Sensor

Description

The Positek E100 in-cylinder linear position sensor is ATEX and IECEx approved for use in potentially explosive gas/vapour and dust atmospheres. It is designed for demanding hydraulic or pneumatic cylinder position feedback applications where service life, environmental resistance and cost are important and is ideal for OEMs seeking good sensor performance for arduous applications in hazardous areas.

Overall performance, repeatability and stability are outstanding over a wide temperature range. The unit is highly compact and space-efficient, being responsive along almost its entire length. Like all Positek® sensors, the E100 in-cylinder sensor provides a linear output proportional to displacement. Each unit is supplied with the output calibrated to the travel required by the customer, from 0-5mm to 0-800mm and with full EMC protection built in.

The sensor is very rugged, being made of stainless steel with an inert fluoropolymer-sheathed probe and stainless steel target tube. The sensor is easy to install in cylinders and has a range of mechanical options. Environmental sealing is to IP67.

Positek intrinsically safe sensors are designed to be used with a galvanically isolated amplifier.

Approved galvanic isolation amplifiers (X005) are available from Positek; there is a choice of 0.5-9.5V or 4-20mA transmission outputs.

The E100 linear position sensor can be installed with a cable length up to 1km between the sensor and the amplifier.

With over 25 years’ experience as a sensor manufacturer and using our onsite production facility, Positek has the flexibility to manufacture and customise any industrial position sensor, including tilt sensors and inclinometers, to any size or specification.

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Positek offers a range of options for its standard sensors. Each sensor is manufactured to suit each customer's preferences. If your requirement is outside the options given below, Positek can modify/ redesign a sensor to suit your specific requirement. Standard options are available as below:

Measurement Range

Factory set to any length from 0-5mm to 0-800mm in increments of 1mm. For example, if your application requires 10" (254 mm) measurement, then Positek will manufacture the sensor specifically for this length. The mechanical length and calibration will be set up for 254 mm.

Connector/Cable Options

Option	Option Code
Connector - Hirschmann GD series Axial, IP65	J
Connector - Axial IP67, M12 - 4 pin. Without trim adjustment	J+Z600
Connector - Axial IP67, M12 - 4 pin. With trim adjustment	J+Z601
Cable with short gland Axial, IP67	M (3 core cable) MQ (5 core cable)
Cable with M12 gland Axial, IP67	L (3 core cable) LQ (5 core cable)
Cable length - The standard length of cable supplied with a Positek position sensor is 50cm although you can specify any length you require.	Specified in cm after the L/LQ or M/MQ e.g. L200 for 200cm cable from axial cable gland

Mounting Thread Size Options

Option	Option Code
M18	T
M20	N
3/4" UNF	P

Target Flange Options

Option	Option Code
Penny and Giles HLP100	V
Temposonics (m4 fixing)	W
Parker Hannifin Cylinder Version	X

<+/-0.1% FSO Linearity error (10mm minimum stroke length)

Option Code
Z650

Intrinsic Safety

ATEX/IECEx approval

The sensor is ATEX/ IECEx approved to:
Ex II 1GD
Ex ia IIC T4 Ga (Ta = -40°C to + 80°C )
Ex ia 111C T135°C Da (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 .

Approval only applies to the specified ambient temperature range and atmospheric conditions in the range 0.80 to 1.10 Bar, oxygen <=21%.

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, cable capacitance and inductance can be up to:- Capacitance: 200 nF max, Inductance: 810 μH max.

Approved amplifiers are available from Positek; there is a
choice of 0.5-9.5V or 4-20mA transmission outputs.

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 0-5mm to 0-800mm (e.g. 305mm)
Independent Linearity/Hysterisis (combined error)	<±0.25% up to 450mm <±0.50% over 450mm at 20°C <±0.1% up to 400mm available on request
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

Other

EMC Susceptibility	EN 61000-6-2
EMC Radiated	EN 61000-6-3
Vibration	IEC 68-2-6: 10g
Shock	IEC 68-2-29: 40g
MTBF	350,000 hrs 40°C Gf
Hydraulic Pressure	350 Bar
Sealing	IP67
Electrical Connections	Screened 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 specific tolerance.

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