G125 Rugged IP68 350bar Submersible Stand Alone Linear Position Sensor
CSA approved intrinsically safe underwater sensor for hazardous gas atmospheres
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: 40mm
Sensor Mounting: M8 rod eyes, body clamps or M8 threads
Spring loaded pushrod option available
Sealed to IP68 350bar, 3500msw, 5000psi
< ±0.25% up to 450mm
< ±0.5% over 450mm
< ±0.1 % option available
Temperature range: -4 to +50°C
Intrinsically Safe 350bar G125 is CSA approved for use in potentially explosive gas/vapour atmospheres. 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. The unit is highly compact and space-efficient, being responsive along almost its entire length. Like all Positek® sensors, the G125 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 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 G125 also offers a selection of mechanical and electrical options, environmental sealing is to IP68 350 Bar (5000psi, 3500m).
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.
|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.
|Body Diameter||40mm end cap, 35mm body tube|
|Body Length||Click for PDF|
|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 |
|Operating||-4 to +50°C|
|Storage||-4 to +50°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|
|Sealing||IP68 350bar, 5000psi, 3500m submersion|
|Electrical Connections||Screened cable|
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.
|Axial micro wet mate bulkhead and mating connector with 50cm flying lead (standard fit).|
Mating connector with longer cable available as special
|Radial micro wet mate bulkhead and mating connector with 50cm flying lead (standard fit).|
Mating connector with longer cable available as special
Mounting Thread Size Options
|M8 rod eye on body (only with option "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
|Spring loaded (extended) (up to 300mm stroke - for longer strokes please contact Positek)||R|
|Spring loaded (retracted) (up to 300mm stroke - for longer strokes please contact Positek)||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|