M500 Rotary Sensor

ATEX & IECEx approved intrinsically safe sensors for hazardous mining environments

Rotary

This sensor at a glance

Available in any measurement angle from 16 to 160° e.g. 90°
(for 5-15° range see M502)

Longer operating life than a potentiometer

Fast delivery options available

Body Diameter: 35mm

Sensor Mounting: Flange or servo

Spring loaded shaft option

Sealed to IP67

Independent Linearity:
< ±0.25% up to 100°
< ±0.1 % option available

Resolution: Infinite

Temperature range: -40°C to +80°C

The  intrinsically safe M500 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 M500, like all Positek sensors, is supplied with the output calibrated to the angle required by the customer, between 16 and 160 degrees and with full EMC protection built in. The sensor provides a linear output proportional with angle of rotation. There is a machined registration mark to identify the calibrated mid point.

Overall performance, repeatability and stability are outstanding over a wide temperature range. The M500 has long service life and environmental resistance with a rugged stainless steel body, shaft, flange or servo mount. The flange or servo mounting options make the sensor easy to install, it 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.

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)
44mm
Shaft
15mm, OD 6mm
For full mechanical details see drawing
Measurement range
Any angle from ±8° to ±80°
Independent Linearity
<±0.25% up to 100° at 20°C
<±0.1% available on request
Temperature Coefficient
<±0.01%/°C Gain & <±0.01%FS/°C Offset
Output Characteristics
See Graph
Resolution
Infinite
Noise

<0.02% FSO

Shaft Torque

<020mNm static

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 ±8° to ±80° in increments of 1°. For example, if your application requires 90° measurement, then Positek will manufacture the sensor specifically for this angular range. The sensor will measure 90° however will still rotate through 360°.


Connector/Cable Options

Option
Option Code
Connector - Axial, IP67, M12, 4 pinJ
Cable with axial 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 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 Options

Option
Option Code
Flanged housing
Blank
Servo mount
P


<+/-0.1% FSO Linearity error  (100° max) Option Code
Z650

Click Here for approved Galvanic Isolation Amplifier Options


Galvanic Isolation Amplifier
Click for PDF
Outline
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Request AutoCAD Drawing
Datasheet
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Installation Sheet
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