M100 In-Cylinder Linear Position Sensor

Description

The Positek M100 in-cylinder linear position sensor is ATEX and IECEx approved for use in potentially explosive gas/vapour, dust atmospheres and mining environments.

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 ATEX unit is highly compact and space-efficient, being responsive along almost its entire length.

Like all Positek® sensors, the M100 In-cylinder Linear Position 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 amplifiers are available from Positek; there is a choice of 0.5-9.5V or 4-20mA transmission outputs.

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

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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 up to a maximum of 15,000cm	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 & Giles HLP100	V
Tempsonics (M4 fixing)	W
Parker Hannifin Cylinder Version	X

<+/-0.1% FSO Linearity error (≥10mm and ≤400mm stroke length)

Option Code
Z650

Intrinsic Safety

ATEX/IECEx approval

This sensor is ATEX/IECEx approved to:
Ex I/II M1/1GD
Ex ia IIC T4 Ga (Ta = -40°C to + 80°C )
Ex ia 111C 20 T135°C Da (Ta = -40°C to + 80°C )
Ex ia I Ma (Ta = -40°C to + 80°C )
This designates the sensor as belonging to; Groups I and II: suitable for all areas (including mining), Category M1/1 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), equipment remains energised.

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, 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
Independent Linearity	<±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
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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