X125 Submersible Linear Position Sensor

Description

The Positek submersible X125 linear position sensor sealed to IP68 350bar (5000psi, 3500m), is an ATEX and IECEx gas approved linear sensor. With a strong 12.6mm push rod it is recommended for applications where high pressure sealing is required or where vibration is an issue or there is a need for longer travel sensors are to be mounted horizontally between rod eyes. It remains an affordable, durable, high-accuracy position sensor designed for applications where the sensor requires IP68 sealing up to a pressure of 350Bar. The unit is highly compact and space-efficient, being responsive along almost its entire length. Like all Positek® sensors, the X125 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 submersible 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 stainless steel M8 rod eye bearings and body clamps. The push rod can be supplied free or captive, with M8 thread, or an M8 stainless steel rod eye. The X125 also offers a wide range of mechanical and electrical 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 X125 linear position sensor can be installed with a cable length up to 1km between the sensor and the amplifier.

With over 25 years’ experience as a sensor manufacturer and using our onsite production facility, Positek has the flexibility to manufacture and customise any industrial position sensor, including tilt sensors and inclinometers, to any size or specification.

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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
Axial wet mate bulkhead and mating connector with 50cm flying head (standard fit) Mating connector with longer cables available as special	J50
Axial wet mate bulkhead and mating connector with 50cm flying head (standard fit) Mating connector with longer cables available as special	K50

Mounting Options

Option	Option Code
M8 rod eye on body (only with option "K")	N
Body clamps, 1 pair (see drawing)	P
Body clamps, 1 pair (see drawing)	P2
M8 rod eye on push rod	U

Push Rod Options

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

<+/-0.1% FSO Linearity error (10mm minimum stroke length)

Option Code
Z650

Intrinsic Safety

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.

Dimensions

Body Diameter	40mm end cap, 35mm body tube
Body Length (Axial version)	Measurement length + 184mm
Body Length (Radial version)	Measurement length + 189mm
Push Rod Extension	Measurement length + 7mm
Push Rod Outside Diameter	12.6mm
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	-4 to +50°C
Storage	-4 to +50°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
Sealing	IP68 350bar, 5000psi, 3500m submersion
Electrical Connections	Micro wet mate series

DATA SHEET

BODY CLAMPS

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