M101 Stand Alone Linear Position Sensor

ATEX & IECEx approved intrinsically safe sensors for hazardous mining environments

Linear

This sensor at a glance

Available in any measurement range from 0-5mm to 0-800mm

Longer operating life than a potentiometer

Fast delivery options available

Body Diameter: 35mm

Sensor Mounting: M5 rod eyes, body clamps or M5 threads

Spring loaded pushrod option available

Sealed to IP67

Independent Linearity:
< ±0.25% up to 450mm
< ±0.5% over 450mm
< ±0.1 % option available

Resolution: Infinite

Temperature range: -40°C to +80°C

The intrinsically safe M101 is ATEX and IECEx approved for use in potentially explosive gas/vapour, dust atmospheres and mining environments. It is designed for industrial and scientific feedback applications and is ideal for OEMs seeking good sensor performance for arduous applications in hazardous areas.

The unit is highly compact and space-efficient, being responsive along almost its entire length. The M101, like all Positek sensors, 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 robust, the body and push rod being made of stainless steel for long service life and environmental resistance. Overall performance, repeatability and stability are outstanding over a wide temperature range.

The sensor is easy to install with mounting options including M5 rod eye bearings and body clamps. The push rod can be supplied free or captive, with female M5 thread, an M5 rod eye, or dome end, Captive push rods can be sprung loaded, in either direction, on sensors up to 300mm of travel. The M101 also offers 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 sensor can be installed with a cable length up to 1km between the sensor and the amplifier.

Intrinsically Safe

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 (Axial Version)
Measurement length +163mm
Probe Length (Radial Version)
Measurement length +186mm
Push Rod Extension
Measurement length +9mm
Push Rod Outside Diameter
9.5mm
Travel
Any stroke from 0-5mm to 0-800mm (e.g. 305mm)
Independent Linearity
<±0.25% up to 450mm
<±0.50% over 450mm at 20°C
<±0.1% available on request
Temperature Coefficient
<±0.01%/°C Gain & <±0.01%FS/°C Offset
See Graph
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

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 Axial IP67 M12 4 pin
J
Connector Radial IP67 M12 4 pin K
Cable with axial M12 gland, IP67
L (3 core cable)
LQ (5 core cable)
(click for more information)
Cable with axial short gland, IP67
M (3 core cable)
MQ (5 core cable)
(click for more information)
Cable with PG9 gland Radial, Gland, IP67
I (3 core cable)
IQ (5 core cable)
(click for more information)
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 I/IQ e.g. L200 for 200cm cable from axial cable gland


Mounting Options

Option
Option Code
M5 rod eye on body (only with option "I" or "K")
N
Body clamps (1 pair)
P
Body clamps (2 pairs)
P2
M5 rod eye on push rod
U


Push Rod Options

Option
Option Code
Spring loaded (extended) (up to 300mm stroke - for longer strokes please contact Positek)
R
Spring loaded (retracted) (up to 300mm stroke - for longer strokes please contact Positek) S
Dome end on push rod (only with option "R")
T
Non-captive push rod
V


<+/-0.1% FSO Linearity error  (≥10mm and ≤400mm stroke length) Option Code
Z650


Click Here for approved Galvanic Isolation Amplifier Options


Galvanic Isolation Amplifier
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Outline
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Request AutoCAD Drawing
Datasheet
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Installation Sheet
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