M114 Waterproof Linear Position Sensor

The intrinsically safe M114 is an ATEX and IECEx mining approved affordable, durable, high-accuracy position sensor. Derived from the M101 stand alone linear sensor, the M114 was designed for industrial and scientific feedback applications where the equipment requires IP68 sealing, it shares many of the desirable features such as compact size.

The M114, 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. The M114 has been designed for applications where the sensor may be completely submerged in water up to a pressure of 10Bar, but good sensor performance and cost are still important.

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.

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Description

The Positek M114 waterproof IP68 linear position sensor 10bar is an ATEX and IECEx mining approved affordable, durable, high-accuracy position sensor. Derived from the M101 stand alone linear sensor, the M114 waterproof IP68 linear position sensor was designed for industrial and scientific feedback applications where the equipment requires IP68 sealing, it shares many of the desirable features such as compact size.

The M114 waterproof sensor, 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. The M114 has been designed for applications where the sensor may be completely submerged in water up to a pressure of 10Bar, but good sensor performance and cost are still important.

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.

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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" (254mm) measurement, then Positek will manufacture the sensor specifically for this length. The mechanical length and calibration will be set up for 254mm.

 

 

Connector/Cable Options

Option Option Code
Connector - Hirschmann GD series Axial, IP65 L (3 core cable)
LQ (5 core cable)
Connector - Hirschmann GD series Axial, IP65 I (3 core cable)
IQ (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 I/IQ e.g. L200 for 200cm 3 core cable from axial cable gland

 

Mounting Options

Option Option Code
M5 rod eye on body (only with option "I") N
Body Clamps P
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 us) R
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

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 (Axial Version) Calibrated travel +168mm
Probe Length (Radial Version) Calibrated travel: +189mm
Push Rod Extension Calibrated travel +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 
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 IP68 10bar, 150psi, 100m
Electrical Connections Screened cable

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