Safety Light Curtains with Advanced Bluetooth Interface

Safety light curtains, or as they are often known as – light barriers, light grids and light guards to mention just a few alternatives are classed as Electro-sensitive Protective Equipment. Consisting of a transmitter and a receiver head, light curtains generate a field of infrared light between these heads which is classed as the detection zone.

Invisible Light Protection

Typically, these diligent devices are situated around access points to a piece of processing machinery, shutting down the device should a person, or a part of a person, cross the beams of the safety grid.  Advantages of a light curtain include reduced operator fatigue, when compared to mechanical options such as gates and barriers, and the subsequent upkeep of these mechanisms and simplifying maintenance and set-up times.

safety light curtain installation

Utilised across numerous industry sectors for many years, light curtains come in many shapes and sizes. Schmersal, renowned for their impressive range of Safety Light Curtains decided to add yet more functionality to these popular process safety devices by adding a built-in high specification Blue Tooth interface.

The Schmersal SLC440/COM Safety Light Curtain range with built-in Bluetooth BLE (BLE stands for Bluetooth Low Energy) is an active optoelectronic protective device that can provide real-time status and diagnostic data of the light grid on a smartphone or a tablet via a Bluetooth interface.

Ideal for Predictive Maintenance

The Bluetooth interface allows easy start-up using a smartphone or tablet with the integrated set-up aid. There is also the useful option of saving the data, which can then be used to document a repeat test or for predictive maintenance purposes. The transmission of data to smartphones / tablets (Android, IOS) is facilitated by an app developed by Schmersal.

NFC technology has been used successfully in the past when it came to recording and monitoring device diagnostic data, however it is limited to only a few centimetres. The Bluetooth BLE interface contained within the SLC440/COM Light Curtains can achieve a range of up to 100 times more, around 5 metres in total.

This means the BLE interface is perfect when the safety light curtain installation is in a relatively inaccessible position. Bluetooth BLE also offers a greater range of applications because not all smartphones or tablets are equipped with NFC. As Bluetooth is an international industrial standard, the SLC440/COM range can be used all over the world.

safety light curtain installation

Safety and Efficiency

The SLC440/COM Safety Light Grid with BLE are ideal for improving efficiency and availability in manufacturing processes as their status can be accessed easily and in real-time, meaning issues can be captured early. Status information and diagnostic data enables processes to be reactivated quicker, particularly in the event of a system shutdown if a hazard is detected.

It also represents an economical innovation as, compared to classic Bluetooth, BLE is characterised by considerably lower energy consumption and reduced costs at a similarly high communication range.

All of the SLC440/COM range of light curtains are available from Kempston Controls, give our sales team a call on +44 (0) 1933 411 411 or email them at, or use the enquiry form below and let us help you select your ideal light curtain solution.

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SPEETEC Sensors -Motion Capture without Contact

The rugged and maintenance-free SPEETEC laser surface motion sensor detects the movement of the surface of a target object without any physical contact. The laser Doppler effect-based technology of this contact-free sensor allows it to measure the speed, length, movement direction and the position of objects of almost any surface type.

Delicate Materials? No problem…

Dependable and gentle, the non-contact measurement method used by the sensor makes it particularly suitable for applications with soft or sensitive surfaces that would be damaged by conventional wheel measurement processes. The SPEETEC is also the ideal solution for use in encoder-based applications that feature fast and dynamic processes that are physically unsuitable for encoders to be used effectively.

  • Non-contact measurement speed, length and position of objects without measuring elements
  • Compatible with multiple materials, colours and surfaces
  • Very high measurement accuracy and repeatability
  • Laser class 1
  • Rugged design, compact dimensions, low weight
  • Standardised communication interface
  • Speed – up to 10 m/s
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Contact Free and Easy to Integrate

As the SPEETEC Sensor measures without making physical contact, it enables new applications in automation where direct measurements on sensitive and soft surfaces needs to be avoided due to damage that could be caused by full contact methods.

Thanks to the compact dimensions and the standardised communication interfaces it’s easy to integrate the SPEETEC into new or existing plant and they are simple to set-up and install, requiring no specialist support equipment.

Utilising an infrared class 1 laser, these dependable non-contact sensors require no additional protective or specialist devices during operation, such as safety glasses or protective housings, and no special safety training for staff is required.

The capable infrared class 1 laser utilised in this sensor delivers exact speed values of up to 10 m/s with very high repeatability. Whether endless materials or individual production pieces, the high-resolution laser enables a maximum resolution of 4 µm and, on a one metre path, the sensor measures material lengths down to the final millimetre. Superbly reliable, these contact free sensors are perfect for a wealth of applications in countless industrial applications.

The laser-based technology also prevents contamination on the material surface to be measured and in addition, the laser is wear-free, this helps maintain process reliability with minimal maintenance downtime and associated costs.





Perfect for Speed and length measurement in a packaging process with simple electrical and mechanical integration, without damaging and abrading material with a measuring wheel.



Tyre Manufacturing



Non-contact and precise speed and length measurement directly on the rubber or other soft and slippery materials, eliminates slipping.




Building Materials



The production of plasterboard requires a very high level of quality and the fast production processes involved depend upon on a reliable measurement to ensure the standard dimensions of the plasterboard is maintained.



Digital Printing



Speed measurement directly on the object being printed upon without damaging its sensitive surface and with a high signal quality and resolution, the SPEETEC sensor helps delivers optimal print results.






Quality control for cutting processes through automated 100 % length measurement directly on the material with enhanced process control and analysis.



Textile Industry



The non-contact motion sensor measures the speed and length of fabric sheets optically. Inaccuracies caused by slippage or impairment of the product are no longer a problem.



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Series UC18GS with IO-Link

Pepperl+Fuch UC18GS Series with IO-Link: State-of-the-Art Ultrasonic Sensors

Pepperl+Fuch’s new UC18GS series of ultrasonic sensors combine the advantages of ultrasonic technology with powerful features to create a solution that pushes the technological boundaries to meet virtually any application challenge.

Flexible and future-proof, the UC18GS is well equipped to tick all imaginable boxes and combines everything you would expect from a standard ultrasonic sensor with modern technology. Perfect for a wide range of applications, this compact sensor is up for any task and can adapt to any environment, program or setting.

UC18GS with IO-Link

UC18GS with IO-Link Top Highlights

  • Adjustable sound beam width
  • Interference target suppression
  • Automatic synchronisation
  • Small dead bands
  • IO-Link for easy setup
  • Extensive programming options

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UC18GS Series: one compact sensor, a multitude of applications

Using modern technological capabilities, the UC18GS series will optimise your application. With functionalities such as interference target suppression, adjustable sound beam width, automatic synchronisation, small dead bands, IO-Link, infrared interface, and push buttons, the UC18GS series offers an unparalleled range of features and adjustment options all in a single device.

UC18GS series: Interference Target Suppression

Interference Target Suppression

With built-in interference target suppression, the UC18GS ultrasonic sensor range adapts to the application settings to optimise and increase process reliability. The intelligent suppression is capable of detecting precisely even if a suppressed component is in the target range.  What’s more, any possible interference from other machine parts can easily be suppressed using the integrated software without affecting everyday use.

UC18GS series: Adjustable Sound Beam Width

Adjustable Sound Beam Width

Thanks to the small dead band and adjustable sound beam width, the UC18GS ultrasonic sensor is able to perform without faults in a range of applications. To ensure precise and accurate measurements, the sound beam can be adjusted and narrowed without affecting the range. Perfect for installation to your existing application!

UC18GS series: Automatic Synchronisation

Automatic Synchronisation

Often when using several sensors in close proximity they interfere with each other; this, however, is no problem for the UC18GS series. Equipped with an automatic synchronisation feature, the UC18GS range can easily sync with multiple sensors without parameterisation. Using their synchronisation input up to 10 sensors can be synchronised together. The UC18GS range has 3 different synchronisation modes: common, multiplex or externally triggered.

Extensive Programming Options

Extensive Programming Options

Whether it’s traditional pushbuttons or interfaces like IO-Link or IrDA, the UC18GS range of ultrasonic sensors gives the user a wide range of programming choices. While IrDA interfaces can provide live data access for maintenance or analysis purposes, IO-Link provides easy setup and allows detailed configuration for any application. The output configuration, as well as the sound beam width can be set directly on the sensor using the programming buttons.

In addition, the IO-Link interface allows for seamless integration into Industry 4.0 applications.

Series UC18GS: One Technology—Limitless Versatility

No two applications are the same with each providing its own unique demands on a sensor. Designed to be highly robust and technologically advanced, the UC18GS is perfect for complex tasks in any environment, whether that’s the detection and identification of objects or filling levels.

Adaptable Level Measurement in Confined Spaces

The UC18GS series can reliably detect the fill level of liquids and granules, regardless of colour or other physical properties. With the adjustable cone-shaped sound beam width, even a small opening in the tank cap is suitable for installation.

In the case of irregular or moving surfaces, the sensor determines an average value and thus indicates the actual level —instead of a potentially distorted punctual value. Objects such as support struts in the measuring field are suppressed by software (PACTware) to reduce interference and to return precise results. Regardless of the sound beam radius, the range of the UC16GS series is not affected and the level is always reliably detected.

Fail-Safe Bottle Detection in Filling Machines

Ideal for reliably detecting the presence of bottles in the end positions on a production line, the UC18GS series can detect an object with varying contours and position deviations. Instead of taking a point-by-point measurement, the sound beam hits the surface of the container over a wide area making its shape, colour and texture irrelevant. The physical buttons on the UC18GS series mean the output configuration and the sound beam radius can be set with ease.

With the IO-Link interface, comprehensive parameters can be set via the controller without physical access to the sensor. This leads to faster commissioning time and removes the need for re-parameterisation if the sensor needs to be changed.

Kempston Controls is the place to come to for all your sensing needs. With access to Pepperl+Fuchs’ entire product portfolio, our expert sales and technical teams are here to help you choose the perfect sensor for your application. Call us today on +44 (0) 1933 411 411 or email us at to discuss your sensor requirements.

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POG 83 rotary encoder

Baumer’s POG 83 Series Rotary Encoders, Built for a life at Sea

Rotary encoders, or shaft encoders as they are often referred to as, are a popular engineering choice when it comes to location, speed and distance monitoring of an axle or a shaft that is located within a mechanical system. Typical encoder applications include industrial control systems, robotic production lines and conveyors, cranes, radar systems and more. Typically, Rotary Encoders come in two particular variants, these being absolute and incremental, absolute encoders provide details of a shaft’s current location, incremental encoders monitor the angular motion or the position of a shaft.

Electro-mechanical in nature, angular position and motion data from the monitored shaft is detected and converted into an analogue or digital signal for interpretation by other aspects of the installations control system to gauge speed, location, distance and act upon that information.

When it comes to motion, speed and distance monitoring in demanding conditions such as those found at sea, you will need a Rotary Encoder that has been specifically designed to resist and ignore the harsh and demanding environmental it is destined to function in.

POG 83 rotary encoder Offshore

Survival at Sea

Baumer are world renowned for their technically advanced Rotary Encoders and their POG 83 range is no exception having been designed specifically for harsh marine and offshore environments. These hardwearing Incremental Rotary Encoders are the go-to device for navigating your way around the extremely harsh perils of a working life at sea.

The POG 83 variants shown below are Incremental Rotary Encoders, with optical sensing and have been specifically designed to resist the adverse conditions found on deck all thanks the materials used and the impressively robust construction which ensures they remains environmentally sealed throughout their entire lifetime. Capable and durable, these rotary encoders pass IP tests not only when new or following DNV-GL tests, but even after via additional stress tests that simulate the aging effects of the sea.

Whatever you can throw at them these Incremental Rotary Encoders are suitable for a wide range of applications including – on-board cranes, floating cranes, on-deck motors, winches and many more.

POG 83 rotary encoder offshore installations

POG 83 Series of Offshore and Marine Incremental Rotary Encoder Benefits

  • High resistance to demanding sea conditions
  • High corrosion resistance to adverse deck conditions
  • No corrosion with salt spray or salt surface drying due to the high-quality stainless-steel housing
  • Liquid tight during temporary water overflow or high-pressure cleaning
  • Resistant to shocks and vibrations caused by waves or docking manoeuvres
  • Robust housing and high-quality ball bearings
  • Maximum machine availability
  • Long-term sealed design prevents the entry of water and vapour
  • Longer service life proven by upstream stress tests and IP tests
  • Minimised service costs, less frequent servicing
  • Variations with DNV-GL approval for simplified ship approval
  • Ready for the roughest conditions on deck
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POG 83 and POG 83 DNV-GL Incremental Rotary Encoders

POG 83 Rotary encoder

POG 83, POG 83 DNV-GL Shaft Encoder Common Features

  • Specially designed for deck machinery and cranes in offshore and marine environments
  • Stainless steel construction with optical sensing
  • Solid shaft ø11 mm with EURO flange B10 (ø115mm)
  • Robust bearings for extended service life
  • M23 flange box and circular plug-in connector in stainless steel
  • Protection class IP 66, IP 67, and IP 69K, offshore and saltwater firm
  • Pulse per revolution 512 – 4096
  • Phase shift 90 ° ±10°


POG 83 Additional Features

  • Tested long-term sealing with an expanded test series beyond DNV-GL
  • Voltage supply 4.75 – 30 Vdc
  • Approvals CE, UL/E217823


POG 83 DNV-GL Additional Features

  • Tested long-term sealing with stress tests
  • DNV-GL tested for quick ship approval
  • Voltage supply 7 – 24 Vdc
  • Approvals CE, UL/E217823, DNV GL


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You can rely on Kempston Controls to help you find the perfect Marine and Offshore Rotary Shaft Encoders specific to your application. With access to the entire Baumer catalogue of products you need not go anywhere else. Call us today on (0) 1933 411 411 or email us at, or contact us using this form to discuss your requirements.

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PowerProx Sensors – Powerful Photoelectric Sensing in Miniature

Photoelectric Sensors are utilised in a vast array of industrial applications, from monitoring products on a production line in a food and beverage processing plant to controlling automatic doors for safety and security. Whatever the installation, there is a photoelectric sensor out there to suit your particular application, but when the installation is limited in space, you need a quality photoelectric sensor from one of the worlds renowned leaders in the design and manufacture of dependable sensor technology, SICK.

Powerprox Sensor in situ

SICK has taken its ultra-reliable, high-performance, PowerProx sensor and shrank all that technology into a space-saving miniature housing that is capable of some of the longest detection range distances ever achieved for a sensor of this scale.

Size Does Matter

The diminutive SICK WTT4SL PowerProx Mini photoelectric sensor measures in at just 12.2 x 41.8 x 17.3 mm but packs a big punch, delivering outstanding performance that you would expect from a sensor 4 times its size. Capable of detecting objects up to 1300 mm away. The knock out performance of the WTT4SL makes it ideal for high-speed production and logistics applications.

This capable photoelectric sensor can be integrated into tight machine spaces such as the grippers of picking robots or for material handling duties in AGVs, as well as for empty bay and clearance detection in high-bay warehouses.

Packed with innovation, SICK has crammed its renowned autocollimation time-of-flight sensing technology into the tiny housing. Autocollimation ensures reliable high-speed detection and outstanding repeatability even in challenging ambient conditions, without cross-talk interference from other sensors.

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Finding the Edge

Even at high process line speeds the ultra responsive PowerProx Mini will register the leading edges of products with precision, even through small holes, such as those found during the quality control inspection of automotive parts and assemblies. Its red-light Class 1 laser, small-light spot size and wide angle of incidence with switching frequencies up to 1 kHz ensure highly-competitive performance across a broad range of applications.

David Hannaby, SICK’s UK Product Manager for Presence Detection stated :
“The SICK PowerProx Mini can replace through beam, background suppression or reflex sensors, so machine builders and production teams can streamline their inventories while still guaranteeing high-performance sensing. The PowerProx Minis can be set up in an instant using the on-board teach-in function, or via IO-Link. It’s all the reliability, repeatability and versatility you expect from SICK, packed into a sensor no larger than a packet of sugar cubes.”

Powerprox Sensor in situ

Easy to Configure

The PowerProx Miniature Photoelectric Sensor can easily be configured for multi-task applications, packed with features including the option of IO Link communication and up to 8 variable switching outputs. Detection is guaranteed with 100% background suppression ensuring that only the desired target is detected, ignoring any interference from shiny objects and materials behind the detected subject. Available in speed or distance variants for optimum performance and with superb repeatability ensuring reliable component counting, sorting and quality control applications in high-speed fast moving consumer good processes, even with products that feature varying surfaces.

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If you are looking for a reliable Miniature Photoelectric Sensor solution then look no further than Kempston Controls to help you decide upon the best product solution for your particular installation. With access to the entire SICK product range we have all of your bases covered, give us a call on (+44) 1944 411 411 or email us at, or use this contact form today to discuss how the PowerProx Miniature Sensor can help you.

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Safe and Secure with the Pizzato ST -H Series RFID Safety Sensors with Magnetic Holding

RFID or Radio Frequency Identification, to use the full terminology, is a technology that uses a digitally encoded tag whose information can be read and captured by a reader using radio waves. A basic RFID system consists of the tag,  a reader and an antenna.

Typically, an RFID tag contains a circuit and an antenna which transmit digital information to an RFID reader, which then converts that information into usable data for interpretation and possibly a system response from another piece of equipment (such as an alarm). Apart from the more obvious applications such as a security door pass card or a supermarket clothing tag, RFID has found multiple uses within industry, including the safety aspect of machine guarding.

Pizzato Elettrica are a global name in the realms of industrial process control and automation components including a broad range of machine access and safety control products such as Safety Hinges, Emergency Stop devices, Safety Modules and Limit Switches to name just a few.

Utilising their industrial knowhow and combining that with RFID technology the busy design engineers at Pizzato Elettrica have expanded the range of ST series RFID Safety Sensors with the extremely versatile and capable ST-H versions. The ST-H series Safety Sensors are equipped with all the advanced technical and operating features that you would find in the original Pizzato ST-G series, including:

  • M12 plastic or stainless-steel connector
  • Multicolour signalling LED, visible from both sides of the housing
  • Multi-tag programming
  • Versions for wide temperature ranges from -35°C to +85°C

Vibration Resistance

The ST-H series Safety Sensors can be configured with a permanent magnet incorporated inside the housing which will generate a holding force between the sensor and actuator. Using this method, a safety guard can be kept closed even in the presence of vibrations such as those found after a recoil during the closing of a safety door, or in areas where air turbulence caused by fans, air lines or ventilation can open lighter safety guards.

Safety Sensors RFID with Magnetic holding

The magnetic holding force of the ST-H range of RFID enabled safety sensors can be selected among three different levels to adapt to any safety gate and guarding application. Cleverly designed, the symmetrical housing with standard hole spacing allows the same safety sensor to be used on both the left and right-hand doors by simply rotating the sensor onto itself. The 78 mm mounting hole spacing facilitates the replacement of the traditional Pizzato SR-B magnetic sensors with an advanced ST-H RFID Safety Sensor.


RFID ST-H Series Features

  • Uses existing technology from the ST-G Series Safety Sensors
  • User configurable magnetic holding force of the actuator
  • Easy to mount symmetrical housing
  • Same mounting hole spacing (78 mm) as for SR-B series Magnetic Safety Sensors
  • Compatible with all ST series actuators
  • Protection ratings of IP67 and IP69K for use in the toughest conditions


With access to the entire Pizzato range of RFID sensor technology products (and all their other devices!) Kempston Controls is the place to come to for all your industrial safety solutions. Speak to a member of our sales or technical teams today on +44 (0) 1933 411 411 or email us at, or use this form to discuss how Pizzato RFID technology packed safety sensors can help you increase workplace safety and save you time and money.

Find Pizzato ST-H RFID Sensors at Kempston Controls


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