G118 Short Stroke Slim-Line Linear Position Sensor

CSA approved intrinsically safe sensors for hazardous gas atmospheres

Linear

This sensor at a glance

Available in any measurement range from 0-2mm to 0-50mm
(for 51-100mm range see G138)

Longer operating life than a potentiometer

Fast delivery options available

Body Diameter: 19mm

Sensor Mounting: Flange or body clamps

Spring loaded pushrod option available

Sealed to IP67

Independent Linearity:
< ±0.25% 
< ±0.1% option available

Resolution: Infinite

Temperature range: -40°C to +80°C

Intrinsically Safe G118 is CSA approved for use in potentially explosive gas/vapour atmospheres. The G118 is designed for a wide range of industrial applications and is ideal for OEMs seeking good sensor performance in situations where a small diameter, short-bodied sensor is required for operation in hazardous areas. The unit is compact and space-efficient, being responsive along almost its entire length, and 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 0-2mm to 0-50mm and with full EMC protection built in. Overall performance, repeatability and stability are outstanding over a wide temperature range. The sensor has a compact 19 mm diameter stainless steel body, is easy to install and set up. Mounting options include body clamps or a stainless steel mounting flange with two 3.2 mm by 30 degree wide slots on a 25 mm pitch. The stainless steel plunger can be supplied free or captive, with female M4 thread, or spring-loaded with a ball end. The G118 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 (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.

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
19mm
Travel
Any stroke from 0-2mm to 0-50mm (e.g. 21mm)
Independent Linearity
<±0.25% 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
IP67
Electrical Connections
Screened cable or M8 4 pin 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 0-2mm to 0-50mm in increments of 1mm. For example, if your application requires 1" (25mm) measurement, then Positek will manufacture the sensor specifically for this length. The mechanical length and calibration will be set up for 25mm.


Connector/Cable Options

Connector - Axial, IP67, M8 4 pin
J
Cable with axial gland, IP67
L (3 core cable)
LQ (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 e.g. L200 for 200cm cable from axial cable gland


Mounting Options

Option
Option Code
Front flange mount
N
Body clamps (see drawing)
P


Plunger Options

Option
Option Code
Spring loaded (extended)
R
Dome end on plunger
T
Non-captive plunger (not with options "R" or "T")
V


<+/-0.1% FSO Linearity error  (≥10mm stroke length) Option Code
Z650


Click Here for approved Galvanic Isolation Amplifier Options


Galvanic Isolation Amplifier
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Outline
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Request AutoCAD Drawing
Datasheet
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Installation Sheet
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