G111 Linear Position Sensor

Description

The Positek G111 rugged stand alone linear position sensor is CSA approved for use in potentially explosive gas/vapour atmospheres. This heavy-duty version of the G101 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 G111 rugged stand alone sensor 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. The G111 also offers a wide range of mechanical options, 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 (G005) 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" (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 - Hirschmann GD series Axial, IP65	J
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	K
Cable with Axial, Gland, IP67	L (3 core cable) LQ (5 core cable)
Cable with Axial, Short gland, Gland, IP67	M (3 core cable) MQ (5 core cable)
Cable with PG9 gland Radial, Gland, IP67	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 up to a maximum of 15,000cm	Specified in cm after the L/LQ, M/MQ or I/IQ e.g. L200 for 200cm cable from axial cable gland

Mounting Options

Option	Option Code
M8 rod eye on body (only with option "I" or "K")	N
Body clamps, 1 pair (see drawing)	P
Body clamps, 2 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 strokes please contact us)	R
Spring loaded (retracted) (up to 300mm stroke - for longer strokes please contact us)	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

Intrinsic Safety

CSA approval

This sensor is CSA approved to:
Class I, Zone 0
Ex ia IIC T4 (Ta = -40°C to +80°C)
AEx ia IIC T4 (Ta = -40°C to +80°C)
Designates the sensor as belonging to; Class I, Zone 0: suitable for all areas except mining, : can be used in areas with continuous, long or frequent periods of exposure to hazardous gas / vapours. Protection class ia IIC, denotes intrinsically safe for Zones 0, 1 & 2 and IIA, IIB and IIC explosive gases. 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

It is imperative Positek® intrinsically safe sensors be used in conjunction with a galvanic barrier to meet the requirements of the product certification. The Positek G005 Galvanic Isolation Amplifier is purpose made for Positek IS sensors making it the perfect choice. Refer to the G005 datasheet for product specification and output configuration options.

The Positek® G005 Galvanic Isolation Amplifier is available with 0.5 - 9.5V or 4 - 20mA transmission output options or reverse outputs of 9.5 - 0.5 volts or 20 - 4 mA.

Dimensions

Body Diameter	35mm
Body Length	Axial Version: Calibrated travel +163mm Radial version: Calibrated travel + 186mm
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 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	IP65/IP67 (connector) / IP67 (cable)
Electrical Connections	Screened cable or integral conductor

DATA SHEET

BODY CLAMPS

G111 Linear Position Sensor

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G112 Linear Position Sensor