X111 Rugged Stand Alone Linear Position Sensor
ATEX & IECEx approved intrinsically safe sensors for hazardous gas environments
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: M8 threads
Spring loaded pushrod option available
Sealed to IP65/67 depending on connector/cable option
< ±0.25% up to 450mm
< ±0.5% over 450mm
< ±0.1 % option available
Temperature range: -40° to +80°
The intrinsically safe X111 is ATEX and IECEx approved for use in potentially explosive gas/vapour atmospheres. This heavy-duty version of the X101 sensor with a stronger 12.6mm push rod, recommended for applications where vibration is an issue or there is a need for longer travel sensors, mounted horizontally, and supported between rod eyes. It remains an affordable, durable, high-accuracy position sensor designed for industrial and scientific feedback applications. The unit is highly compact and space-efficient, being responsive along almost its entire length. Like all Positek sensors, the X111 provides a linear output proportional to displacement. Each sensor 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 M8 rod eye bearings and body clamps. The push rod can be supplied free or captive, with female M8 thread, an M8 rod eye, or dome end, Captive push rods can be sprung loaded, in either direction, on sensors up to 300mm of travel. Environmental sealing is to IP65 or IP67, depending on selected cable or connector options.
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.
|ATEX/IECEx approval||The sensor is ATEX/IECEx approved to:|
Ex II 1G
Ex ia IIC T4 GA (Ta = -40°C to +80°C).
This designates the sensor as belonging to; Group II: suitable for all areas except mining, Category 1 G: can be used in areas with continuous, long or frequent periods of exposure to hazardous gas (Zone 0). Protection class ia, denotes intrinsically safe for all zones. Apparatus group IIC: suitable for IIA to IIC explosive gas. Temperature class T4: 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.
|Body Length (Axial version)||Measurement length + 163mm|
Body Length (Radial version)
|Measurement length + 186mm|
|Push Rod Extension||Measurement length + 7mm|
|Travel||Any stroke from 0-5mm to 0-800mm (e.g. 305mm)|
|Independent Linearity||<±0.25% up to 450mm|
<±0.50% up to 450mm
<±0.1% up to 450mm on request
|Temperature Coefficient||<±0.01%/°C Gain & <±0.01%FS/°C Offset |
|Operating||-40 to +80°C|
|Storage||-40 to +125°C|
|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||IP65 (connector) / IP67 (cable)|
|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:
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 - Hirschmann GD series Axial, IP65
|Connector - Axial IP67, M12 - 4 pin. Without trim adjustment
||J + Z600
|Connector - Axial IP67, M12 - 4 pin. With trim adjustment||J + Z601
|Connector - Radial, IP67, M12 4 pin
|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)
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 Thread Size Options
|M8 rod eye on body (only with option "I" or "K")
|Body clamps, 1 pair (see drawing)
|Body clamps, 2 pairs (see drawing)||P2
|M8 rod eye on push rod
Push Rod Options
|Spring loaded (extended) (up to 300mm stroke - for longer strokes please contact Positek)
|Spring loaded (retracted) (up to 300mm stroke - for longer strokes please contact Positek)
|Dome end on push rod (only with option "R")
|Non-captive push rod
|<+/-0.1% FSO Linearity error (≥10mm and ≤400mm stroke length)