While finding the right sensor solution for ‘Hazardous Environments’ may be more complicated, it doesn’t mean that it can’t be done. Everight can’t replace a Safety Engineer, but Everight can help navigate linear, rotary sensor and inclinometer sensors that have been formally rated for use in hazardous environments to ATEX, IECEx and CSA requirements.
POSITAL’s UL rotary encoders for hazardous environments offer users mutliple user interfaces and mounting options at an economical price point are complicated machines which must perform flawlessly under the harshest conditions.
The intrinsically safe X132 is ATEX and IECEx approved for use in potentially explosive gas/vapour atmospheres. It is designed for gauge head positioning in industrial and scientific applications and is ideal for OEMs seeking good sensor performance for arduous applications in hazardous areas. The X132, like all Positek sensors, 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 0-50mm and with full EMC protection built in.
Overall performance, repeatability and stability are outstanding over a wide temperature range. The sensor is very robust, the body and plunger being made of stainless steel for long service life and environmental resistance.
The plunger is spring loaded with a domed end. The X112 is easy to install with a long ½ inch UNF mounting thread and is supplied with two lock nuts for positioning. Environmental sealing is to IP67.
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.
The G005 Galvanic Isolation Amplifier has been designed specifically for use with Positek Intrinsically Safe position sensors in hazardous Zone 0, 20 Class I, II & III applications and is certified; [Ex ia IIC] [AEx ia IIC] [AEx iaD IIIC]. The Amplifier sacles the output in the safe area and ensures the corresponding output is correct over a wide range of input voltages. It also supports a 5-wire installation option which can negate the effect of losses over long distances, thus maintaining the output signal accuracy. The X005 is factory configured to either 0.5 to 9.5V or 4-20mA and has a bandwidth of 4.7kHz.
The X005 Galvanic Isolation Amplifier has been designed specifically for use with Positek Intrinsically Safe position sensors and is certified intrinsically safe [Ex ia Ma] I and [Ex ia Ga Da] IIC. The Amplifier sacles the output in the safe area and ensures the corresponding output is correct over a wide range of input voltages. It also supports a 5-wire installation option which can negate the effect of losses over long distances, thus maintaining the output signal accuracy. The X005 is factory configured to either 0.5 to 9.5V or 4-20mA and has a bandwidth of 4.7kHz.
The MR348 series Fiber Optic Incremental Sensor is an entirely passive, non-metallic incremental rotary encoder designed for use in Magnetic Resonance Imaging (MRI), functional MRI (fMRI), nanomagnetic detection, EMC test labs, and similar applications where immunity and transparency to electromagnetic fields is required.
The MR341 Mini Rotary Encoder is a Size 11, small form factor incremental encoder offering resolution to 512ppr. It is inter-mountable with resolvers, synchros and conventional electronic-based encoders of the same size. The MR341 Encoder is a 100% passive sensor which operates entirely in the optical domain. The sensor provides immunity to any electro-magnetic interferences such as lightning, radiation, magnetic fields and other harsh environment conditions. The innovative design provides 100% electrical isolation as well as immunity to high voltages ideal for harsh environment applications such as feedback for welding robots, measuring anode position in smelters, and monitoring pantograph operation in electric rail applications.
The MR343 non-metallic construction makes the sensor entirely MRI safe, being both immune and invisible to magnetic fields.
The MR342W series ZapFree® Fiber Optic Incremental Sensor is an entirely passive, intrinsically safe, fiber optic incremental rotary encoder mounted on a draw wire module ideal for a wide range of harsh and hazardous environmental linear position applications.
The MR342 series ZapFree® Fiber Optic Incremental Sensor is an entirely passive, intrinsically safe, fiber optic incremental rotary encoder ideal for a wide range of harsh and hazardous environmental applications. The passive, all-optical Sensor connects to the remote Controller via a standard duplex 62.5/125 multimode optical fiber link. The remote MR340 Controller Module transmits and converts optical signals to/from the Sensor. The Controllers multiple built-in interfaces insure compatibility with industry standard motor drives, PLCs, quadrature counters, and motion control system.
The MR341 Mini Rotary Encoder is a Size 11, small form factor incremental encoder offering resolution to 512ppr. It is inter-mountable with resolvers, synchros and conventional electronic-based encoders of the same size. The MR341 Encoder is a 100% passive sensor which operates entirely in the optical domain. The sensor provides immunity to any electro-magnetic interferences such as lightning, radiation, magnetic fields and other harsh environment conditions. The innovative design provides 100% electrical isolation as well as immunity to high voltages ideal for harsh environment applications such as feedback for welding robots, measuring anode position in smelters, and monitoring pantograph operation in electric rail applications.
The MR340-1 DIN Rail Mount Controller is the active optical and electrical interface for the MR340 Series ZapFREE Fiber Optic Incremental Encoder System. The system is an innovative all-optical design immune to any electromagnetic interferences such as magnetic fields, lightning, voltage, and other harsh environment conditions.
As the incremental code passes through an MR34X Sensors internal optical pick-up, the phase output of two
light beams creates the classical A/B quadrature signals accessible via the controllers electrical interface.
The controller keeps track of position and also calculates the RPM and speed of the connected encoder Both position and speed can be read via RS485 Modbus RTU serial interface, USB, SSI or analog output. The analog output can be configured for either ±10V or 4-20mA output.
The MR430 series ZapFREE® Fiber Optic Position Sensor is a small form factor, rotary position sensor with 13-bit, single-turn resolution.
The MR430 features an innovative design which enables new applications and OEM product features not formerly possible with electronics-based sensors.
The sensor is 100% passive and is unaffected by EMI, RFI, microwaves and magnetic fields. The innovative, alldielectric design also provides 100% electrical isolation and immunity to high voltages & lightning.
POSITAL has extended its TILTIX family of inclinometers (tilt sensors) to include explosion-proof models designed to operate safely in environments that contain potentially dangerous levels of explosive dust or gases.
The intrinsically safe E500 is ATEX and IECEx approved for use in potentially explosive gas/vapour and dust atmospheres. It is designed for industrial and scientific feedback applications and is ideal for OEMs seeking good sensor performance for arduous applications in hazardous areas.
The E500, like all Positek sensors, is supplied with the output calibrated to the angle required by the customer, between 16 and 160 degrees and with full EMC protection built in. The sensor provides a linear output proportional with angle of rotation. There is a machined registration mark to identify the calibrated mid point. Overall performance, repeatability and stability are outstanding over a wide temperature range. The E500 has long service life and environmental resistance with a rugged stainless steel body, flange and shaft. The flange or servo mounting options make the sensor easy to install, it 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 (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.
Intrinsically safe G500 is CSA approved for use in potentially explosive gas/vapour atmospheres. The G500 is designed for industrial and scientific feedback applications and is ideal for OEMs seeking good sensor performance for arduous applications in hazardous areas.
The G500, like all Positek® sensors, is supplied with the output calibrated to the angle required by the customer, between 16 and 160 degrees and with full EMC protection built in. The sensor provides a linear output proportional with angle of rotation. There is a machined registration mark to identify the calibrated mid point.
Overall performance, repeatability and stability are outstanding over a wide temperature range. The G500 has long service life and environmental resistance with a rugged stainless steel body and shaft. The flange or servo mounting options make the sensor easy to install, it also offers a 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.
Speak to our specialists for expert advice on sensor and encoder solutions.
At Everight, we pride ourselves on providing top-notch customer service and technical expertise. Our team of experts is dedicated to helping you find the perfect sensor and encoder solutions for your needs.
At Everight Position there are few things we look forward to more than the phone ringing with an application or sensor question. No question too simple, no application too big. The desire to help others solve problems has been our passion and always will be. If you don’t find the answer you are looking for below, don’t fret, just pick up the phone and give us a call, +1-856-727-9500.
I thought rotary encoders used optical discs, but now I’m finding other options such as magnetic, capacitive and inductive. How do I determine which is right for my application?
Each sensor technology has its own strengths and weaknesses and within each technology there is a broad range of options. For example, some optical encoders cost $20 and others cost $10,000. The chart below is a very generalized overview of how the different technologies stack against one another and it should be noted that exceptions do exist.
For further reading see our blog post ‘Encoder Technology Overview’.
For more information on the right sensor for your specific application please feel free to reach out to Everight Position:
856-727-9500
info@evrtp.com
and one of our specialists will work to find the best solution.
Incremental Encoders
Incremental devices provide position change information only, so the actual position (0-360°) is unknown at startup. A once-per-rev index/marker signal defines the zero position or null of the device. It can be detected during a homing routine if needed.
Incremental sensors are typically small, accurate and cost-effective. They provide essentially instantaneous position information with minimal latency.
Absolute Encoders
Absolute devices provide the actual physical position within one revolution. Homing elimination is a major advantage as this process takes time and isn’t always possible depending on the physical limits of the application.
Absolute sensors are usually bigger and more expensive than incremental devices. Data processing of multiple tracks and serial transmission can increase the latency of position reading. Absolute sensors are available in a wide variety of interfaces including analog (voltage, current), SSI, BiSS, CANopen, J1939 and many Ethernet based protocols.
Absolute Multi-Turn
Rotary, multi-turn devices provide actual position over multiple revolutions. Homing can be eliminated. Multi-turn devices incorporate internal gearing, a battery backup or a self-generated pulse counter such as a Weigand Wire.
While Positek sensors are manufactured to never need to be calibrated, we do understand that sometimes it can be necessary to confirm the sensors functionality and linearity.
Full instructions can be viewed here: https://www.positek.com/contentfiles/files/Linear_Calibration_Instructions.pdf
Note, you will need a sensor where the ‘trim pots’ are accessible to make this adjustment.
If it is a Gill liquid level sensor, yes you can. Some lower-end capacitive sensors rely on the tank housing to complete the circuit necessary to measure the liquid level, however Gill liquid level sensors are fully enclosed, and thus can be used in tanks made of any material. Gill sensors can even be mounted at an angle or upside down with no loss of performance.
Quality
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