
PLUS Automation Limited
About us
PLUS Automation helps designers and engineers #MakeSenseofSensors.
We offer FACTORY & PROCESS AUTOMATION SENSORS which improve machine and automation performance and reduce costs - We represent the exceptional sensors from CONTRINEX, ReeR, and SATRON.
▫ CONTRINEX are a Swiss manufacturer specialising in Inductive, Machine Safety, Photoelectric, RFID and Ultrasonic sensors. Their extensive range provides various solutions, from the smallest to the most robust sensors. As well as providing industry-leading performance, they offer low prices and many unique sensing solutions.
▫ REER SAFETY are Italian machine safety manufacturer offering a vast array of Safety Light Curtains, Safety Sensors, Safety Controllers and Measurement Light Curtains. They are trusted for their reliability, capability and competitive pricing and for offering solutions for extreme applications like light curtains with IP69K and ATEX-rated versions.
▫ SATRON INSTRUMENTS is a Finnish process automation manufacturer of sensors that measure Pressure, Differential Pressure, Turbidity, Consistency, Solids Content, Density, and Liquid Level, plus service connections for the Dairy, Food & Beverage, Paper and Process industries.
We hold over 2,000 pcs in UK stock, backed by European stock and fast lead times from our manufacturing partners.
Email Sales@PLUSAutomation.co.uk or call 0121 58 222 58 to discuss your machine or application.
Products & services

Satron SAVE Sampling
SAVE has been designed for controlled and safe sampling of pulp slurry. SAVE’s head is shaped and dimensioned to ensure a representative sample. SAVE has been designed for controlled and safe sampling of pulp slurry. SAVE’s head is shaped and dimensioned to ensure a representative sample. The sampler head is inserted deep into the process pipe, past the water layer flowing along the pipe wall. SAVE’s interior parts can be flushed with water after the sample has been taken, to prevent build up or blockage of sampler. Since the sampling valve’s shut-off mechanism is at the head of the sampler, SAVE will not get blocked even during long duty intervals. SAVE’s piston utilizes metal-to-metal sealing and does not include any wearing parts, such as rubber seals.

SATRON PASVE® Cs Consistency Transmitter Mounting & Service Valve
PASVE® Cs is a ball-type mounting and service valve for the Satron VCT optical consistency transmitter offering numerous advantages over standard insertion type devices. Its special ball valve construction allows the safe and easy insertion and removal of the transmitter without interrupting the process. Developed from over 30 years of experience with the proven PASVE® design for process sensors like pH, pressure and conductivity, PASVE® Cs greatly improves worker safety with installations in high pressure pipe lines.

Satron VC Consistency Optical Sensor
SATRON VC is a product family for measuring the consistency and other variables like ash content and brightness in pulp & paper processes. It is suitable for all pulps consisting of a single grade, in consistency range of 0…12%Cs located within the mechanical and chemical pulp process in applications as latency removal, screening, low consistency refining, screening, washing, refining and drying machine applications. All Satron VC products can provide accurate and reliable measurement without need for regular maintenance and equipped with a retraction mechanism. SATRON VCT is an optical total consistency transmitter. It is suitable for all pulps, in a consistency range of 0…12%Cs in applications located in the mechanical pulp processes (SWG, TMP, PWG and CTMP) as well as in wide range of other paper machine and pulp mill applications. SATRON VCA is a multichannel optical transmitter. It is suitable for total & filler (ash %) consistency measurements in the majority of the pulp & paper applications. SATRON VCB is a multichannel optical Brightness transmitter, suitable for Brightness measurement in the majority of the chemical and mechanical pulp, recycled and paper machine applications. SATRON VCK is a multichannel optical transmitter, suitable for total content measurement (fibre and filtrate) in majority of the Bleach plant applications.

Satron SAVE H
Satron SAVE H is a pneumatically actuated sampling valve designed for high-consistency wood pulps and/or pulp containing shives and knots. The sampler is suitable for all pulp sampling applications in the pulp and paper industry.

Satron VOD Optical Sensor
The Satron VOD optical sensor works according the absorption principle with the use of LED technology. The Hygienic approved sensor emits 365, 540, 640 or 880nm LED light. And the measured absorption is in direct correlation with the clearness of the process. This makes the Satron VOD ideal for measuring in example the outlet of Reverse Osmosis, Condensate retrieval or Ultra Filtration processes.

Satron VOF Optical Sensor
The Satron VOF sensor works according the absorption principle with the use of LED technology. This sensor is removable from the process with the use of a 1” ball valve for easy relocation or maintenance. This makes the SATRON VOF sensor ideal for waste outlets, effluent monitoring and color monitoring.

Satron VOM Optical Sensor
The Satron VOM optical sensor works according the backscattering principle with the use of LED technology. The Hygienic approved sensor receive the scattered light back from the process media. This makes the Satron VO ideal for measuring white water applications in the dairy industry. In example, measuring during the start and the end of CIP cycles will give real-time information on the amount of milk and water currently in the process. This will prevent wasting valuable amounts of water, milk, time, chemicals and of course energy. All with the use of 1 sensor.

Satron VOA Optical Sensor
The SATRON VOA dual wavelength optical sensor is suitable for the measurement of different liquids. Savings can be obtained by using SATRON VOA sensor in process industries, e.g. the use of clean water can be minimized, the time used for the cleaning (CIP) will be shortened, the use of the end product (in dairy applications: milk) and the use of cleaning materials needed in the process can be optimized. The transmitter communicates digitally using the HART® protocol.

Process couplings - Satron
Process couplings for Satron Transmitters for different purposes in many different materials.

VL Pressure Transmitter Satron
For clean, sedimenting, crystallizing and sticking materials. measuring range: 0…+15 MPa SATRON VL is used for 0-1,4 kPa…0-15 MPa ranges. The transmitter communicates in a 2-wire system. In pressure measuring applications SATRON VL transmitters are used for measuring the pressure of clean, sedimenting, crystallizing and sticking materials. The transmitter’s sensor is piezoresistive. The rangeability is 25:1. The transmitter communicates digitally using the HART® protocol. The versatile selection of diaphragm materials will meet the needs in most processes. Also the models with special accuracy are included to the series of VL transmitters. Measuring Range: 0…+15 MPa Adjustability: 0-1,4 kPa…0-15 MPa Applicability: Clean, sedimenting, crystallizing and sticking materials

Satron PASVE® Mounting and Service Valve
PASVE® is a ball-type mounting & service valve for Satron VG type level and pressure transmitters, VO optical sensors and other equipment with G1 process connection. To connect Satron VL or VDtL transmitter, please see PASVE® BA. PASVE® was designed to promote workers’ safety and makes it simple and safe to disconnect the transmitter from the process for maintenance and cleaning, without stopping the process or draining the tank. PASVE® is available in a manually operated type or equipped with a pneumatic actuator.

VG Pressure Transmitters - Satron
Satron VG is part of the V transmitter series with both analogue and smart properties. In pressure measurements the VG can be used for measuring the pressure of clean, sedimenting, crystallizing and sticking materials. Satron VG is used for 0-1.4 kPa…0-25 MPa ranges. The transmitter communicates in a 2-wire system. The transmitter’s sensor is piezoresistive. The rangeability is 25:1. The transmitter communicates digitally using the HART® protocol. Satron VG transmitter is suitable to use with PASVE® mounting valve. Measuring Range: -0,1…+25 MPa Adjustability: 0-1,4 kPa…0-25 MPa Applicability: Clean, sedimenting, crystallizing and sticking materials

Machine Safety - Light Curtains
We offer Machine Safety Sensors from Contrinex and ReeR ISO 13849 Type 2 & Type 4 compliant light curtains and perimeter guards. plus IP69K & Ecolab-approved safety sensors. Safety products include finger protection, hand protection, Bluetooth safety equipment, access control, magnetic sensors, RFID sensors & other safety accessories.

RFID Sensors
Contrinex RFID Sensors Contrinex offers ISO/IEC 15693 compliant high frequency (HF) and unique full-metal, metal 'friendly', low frequency (LF) RFID systems including washdown, high-temperature, robust and IO-Link options.

Photoelectric Sensors - Transparent Object Detection
Contrinex Transparent-object Detection Sensors Transparent-object sensors with Red-light or unique UV-light technology offer unmatched detection and accurate counting of clear bottles and trays - Simplified set-up & exceptional performance give you a ‘Clear’ advantage.

Photoelectric Sensors - Distance Measurement
Contrinex Distance Measurement Photoelectric Sensors Contrinex offers a choice of triangulation technology for highly accurate distance measurement at short range (200mm) or Time-of-Flight (TOF) for longer distances (5m) - High performance & reliability independent of the target’s colour or surface texture.

Photoelectric Sensors - Minature
Contrinex Miniature Photoelectric Sensors Being Swiss places an expectation on Contrinex for expertise in miniaturisation and so perhaps it is no surprise that Contrinex excels in this arena, with photoelectric sensors from as small as Ø4mm.

Photoelectric Sensors - Detection & Measurement Light-Grids
Contrinex Detection & Measurement Light-Grids Swiss companies have a reputation for precision and Contrinex combines this with clever engineering in its innovative light-grids to give fast & simple implementation, with low prices, which means lower costs.

Photoelectric Sensors - Fork Sensors
Contrinex Photoelectric Fork Sensors Contrinex’s photoelectric Fork sensors offer simplicity, multi-mode operation and compactness, with high-resolution, high-speed sensing and IO-Link. Switching up to 5,000Hz at 0.3mm resolution, or high-resolution at 0.1mm.

Photoelectric Sensors - Fibre-optic Sensors
Contrinex Fibre-optic Sensors, Amplifiers & Fibres The Contrinex’s world-class Fibre-optic sensor range includes both DIN-rail mounted and robust cubic sensors. Glass and synthetic optical fibres provide low attenuation and resistance to high-ambient temperatures and aggressive environments for demanding applications.

Photoelectric Sensors - Contrast & Colour Sensors
Contrinex Contrast & Colour Sensors Contrinex’s Industry-leading Contrast sensors offer exceptional performance for detecting print marks in printing, labelling & packaging utilising a narrow focused RGB light. Contrinex’s colour sensors feature five selectable tolerance levels for each of three separate outputs, to recognise or ignore even the smallest variations of colour.

Photoelectric Sensors - Standard
Contrinex Standard Photoelectric Sensors Contrinex photoelectric sensors excel at Positioning and Presence-detection - For example, high-performance, industry-leading sensing distances and outstanding background suppression characteristics, combine to give high accuracy and reliability.

Inductive Sensors - 2-Wire
Contrinex 2-Wire Inductive Sensors Contrinex 2-Wire inductive sensors include DC, AC/DC and NAMUR options in sizes from Ø3 to M30, plus a 5 x 5mm square section and a sensing range up to 15mm.

Inductive Sensors - Weld Immune
Contrinex Weld-Immune 600 & 700 Series Inductive Sensors The 600 & 700 Series of Inductive sensors are also available as ‘Weld-Immune’ variants. RFI resistance and the option of a ceramic coating is added to the unique impact and abrasion resistance range.

Inductive Sensors - Washdown Rated
Contrinex Washdown 316L/V4A Stainless-steel 700 Series Inductives The 700-Series family includes enhanced corrosion resistance with the ‘Washdown’ 316L/V4A stainless-steel versions. Enhanced corrosion resistance with ‘Hammer-proof’ robustness helps build reliable machines for challenging environments.

Inductive Sensors - Extra & High Temperature
Contrinex Extra & High Temperature Inductive Sensors Contrinex help keep you cool with their ranges of ‘Extra’ and ‘High’ Temperature sensors across a range of challenging applications across many industries.

Inductive Sensors - Swarf Immune
Contrinex Chip & Swarf Immune 700 Series Inductive Sensors The innovative 700 Series inductive sensor family includes ‘Chip & Swarf Immune’ versions in addition to the unique impact and abrasion resistance - imagine how they can reduce machine down-time.

Inductive Sensors - Smart
Contrinex Smart Inductive Sensors Contrinex’s new cloud-ready smart sensors are perfect for live data monitoring from the heart of an application with fast and simple set-up.

Inductive Sensors - Pressure Rated
Contrinex Extra & High Pressure Inductive Sensors Contrinex helps keep you calm under pressure with their range of 'Extra' & 'High' pressure sensors which are trusted in a World of challenging applications.

Inductive Sensors - Miniature
Contrinex Miniature Inductive Sensors Being Swiss places an expectation on Contrinex for an expertise in miniaturisation excelling with the world’s smallest inductive sensor.

Inductive Sensors - Maritime
Contrinex Maritime Inductive Sensors For 20 years, Contrinex has proved its reliability in ships, ports and offshore applications offering the additional benefit of DNV-GL certification.

Inductive Sensors - Double Sheet Detection
Contrinex Double-Sheet Detection - '700 Series' Inductives Contrinex’s innovative Double-Sheet detection sensors reliably detect single or double sheets of steel, stainless-steel or aluminium - protect press lines from misfeeds or ensure the assembly of two metal sheets

Inductive Sensors - Analogue
Contrinex Analogue Inductive Sensors Contrinex’s best-in-class analogue inductive sensors are accurate to Microns (µM) and trusted in a wide variety of critical systems and innovative machines.

Inductive Sensors - Extreme Robust - 700 Series
Contrinex '700 Series' Inductives - 'Extreme' Robust The innovative inductive sensor family, which is so impact and abrasion resistant that you can use it to hammer in nails - Imagine how they can reduce machine downtime.

Inductive Sensors - Classic - 600 Series
Contrinex '600 Series' Inductives - 'Classic' 'Basic’ doesn’t mean compromise for Contrinex’s ‘600 Series’ inductive sensors. Contrinex’s ‘600’ Series inductive sensors offer high-performance sensing in a wide variety of sizes, shapes and specifications.

Inductive Sensors - Extended Range - 500 Series
Contrinex ‘500 Series’ Inductives - ‘Extended Distance Contrinex is renowned for long sensing ranges and the ability to reliably detect small targets. The industry leading ‘500 Series inductive sensors offer High-performance sensing in a wide variety of sizes, shapes and specifications.

ReeR - Safety Light Curtains
ReeR Safety Light Curtains Ensure the safety of your personnel, plant, and machinery by utilising ReeR safety light curtains. These reliable solutions offer comprehensive coverage for all safety requirements in the realm of industrial automation, guaranteeing optimal safety and efficiency.

ReeR - Safety Controllers and Interfaces
ReeR Safety Controllers and Interfaces. Discover Mosaic's, our reliable, versatile and configurable Modular Safety Integrated Controller, the ideal solution for managing all safety devices of your machine or plant. ReeR Safety Interfaces provide dedicated stand-alone modules for controlling safety devices.

ReeR - Safety Devices
ReeR Safety Devices Contactless Safety Sensors: RFID, Proximity and Magnetic, Safety Encoders, Safety Switches with Locking and Interlocking Functions, Safety Photocells and Laser Scanners.

ReeR - Measurement Light Curtains
Measurement Light Curtains. Our light curtains for industrial and civil applications are dedicated to object detection, measurement and recognition. Micron offers a solution for your every need.
News

Contrinex SMART Sensors Provide a Built-In Diagnostic Solution for Cylinders
Contrinex inductive SMART sensors enable hydraulic & pneumatic cylinder & valve manufacturers an opportunity to add smart-monitoring as well as enhance their performance. These sensors combine robustness, reliability & performance with smart functionality

Satron Ensures There’s No Sweat to Perfect Desserts
Custard-like dairy puddings are susceptible to water contamination which causes texture changes and risks consumer complaints. Satron’s VOA turbidity and solids content sensor excels at detecting water even in difficult applications like chocolate deserts

Satron’s VOD Optical Sensors Improve Utilisation and Performance for a ‘Big Cheese’ Factory.
The Satron VOD sensor's ability to detect remnants of fat, protein or lactose in a liquid is used by a large dairy which makes cheese, to improve its ultrafiltration and reverse osmosis systems.

What Can IO-Link Do? – A Consistent and Powerful Approach from Contrinex
IO-Link’s is a simple short distance, bi-directional, digital, point-to-point communication standard, but Contrinex’s consistent approach offers common functionality across a vast array of sensors and a big advantage to Engineers.

Contrinex’s Unique Transparent-object-detection Sensors Give a Blistering Performance
Contrinex offers both standard transparent-object-detection sensors using red light and a unique solution using Ultraviolet light to provide much more consistent & robust switching because UV light is absorbed by transparent plastic and glass objects.
Create Double-Sheet Sensors Using Contrinex SMART Sensors and PocketCodr
Contrinex SMART inductive sensors can quickly & easily be configured as Double-sheet detection sensors using the PocketCodr module & companion app. Monitoring & configuration of the sensor is done on a tablet or phone. removing the need for any coding.

Contrinex’s Low-cost IO-Link RFID Prevents Expensive Hose-coupling Errors
Hose-coupling stations are common in the bulk handling of fluidizable materials and Contrinex's low-cost IO-Link RFID system provides a low-cost way of verifying the correct outlet/hose combination is used.

Contrinex’s Tiny 4mm x 4mm x 11mm MiniDist Brut Photoelectric is Ideal for Robot Grippers
Contrinex’s MiniDist Brut sensors at only 4.5mm x 4mm x 11mm and 3g for the bare PCB unit are an ideal solution for Robot Grippers. The sister version in a plastic housing is still very small at only 6mm x 5mm x 18mm.