High Volume, Low Cost OEM Strain Sensing Beam

April 10th, 2006

mini-strain-beam-200x200The requirement was to design and manufacture a simple beam to fit into a very confined space and meet a stringent budget.  Following several months of design, development and creation the final product is manufactured from a high grade alloy steel requiring minimal additional machining.  A single strain gauge containing a full Wheatstone bridge is bonded to the beam in a specific position to maximise the sensitivity and accuracy.

During development a bespoke calibration system was also built to ensure that each beam was accurately positioned and loaded for consistent quality.

Following the successful acceptance trials and approval by our customer, the product has been put into full production, which is expected to exceed 2000 pieces per year.

This is a typical example of our design, development and manufacturing capabilities in the field of bonded strain gauge technology.

Strain-Gauged Chain Link Measures Tension in Poultry Plant Conveyor System

February 1st, 2006

gauged-chain-link-150x150The plant was experiencing severe chain wear problems causing loss of production.  It was suspected that this was due to excessive tension at certain points in the system.  The challenge was to identify these areas, which could only be done effectively in a live running situation.

Applied Measurements Ltd were supplied with a standard link from the chain, this was modified to enable strain gauges to be bonded to the structure.  The transformation of the link into a load cell was completed by terminating with a four core screened cable, environmental protective coatings and calibration.

The link was then installed in the standard process chain and fitted with a portable data logger, this enabled the special link to map the forces around the system allowing adjustments to be made where required to ensure even tension, reducing chain wear and system stoppages.

Bolt-On Retrofit Sensors for High Capacity Weighing Systems

October 5th, 2005

boss-f-200x200The BOSS series of bolt-on strain sensors from Applied Measurements provide a very cost effective solution for many high capacity tank and silo weighing applications as well as finding application in overload protection systems on cranes, winches, lifts and presses.

The sensors are designed to be attached directly to steel structures and are capable of detecting tensile, compressive and bending stresses.

Utilizing the latest strain gauge technology, each sensor is manufactured from specifically selected high grade alloy steel with thermal coefficients of expansion matched to structural steel.  Unlike some competitive units each sensor is temperature cycled and compensated to minimize the effects of temperature variation.

For installation, each unit is supplied with a template to which the two threaded mounting blocks are attached using high tensile bolts. The mounting blocks are welded in position and the bolt-on sensor then attached in place of the template.

The sensors are fully encapsulated to ensure complete protection from all but the harshest of environments.

Click here to visit our main Bolt-On Sensing page

Batch Weighing Controlled Through Touchscreen Technology

July 5th, 2005

touchscreen-system-150x150Applied Measurements Ltd was asked to design a batch weighing system where the ingredients of each batch would constantly vary.  To weigh the batches into the barrels AML built a stainless steel weighing platform incorporating load cells to the specific size required by the customer. As the barrels could be dropped on to the weighing platform, positive overload stops were included to protect the load cells.

The output signal from the weighing platform is fed into a digital display, which has two set point relays.  Connected to the digital there is also a touch screen display, this enables the operator to see the live reading, the batch reading, the total batches and a numeric keypad to input the individual batch size. The touch screen controls the set point relays in the digital display.

Also built into the control panel were two further digital indicators connected to PT100 studded-platform-150x150temperature probes monitoring two mixing vessels.  The complete system was set up to let the batching control proceed, however if one of the mixing vessels temperatures went out of range the relays of the digital indicators would cut the pumps to the main mixing vessel. The operator at a glance can see his two temperature readings, his live weight on the platform and has full control of his batching.

The total flexibility of the touch screen technology means that AML could program the unit to suit the customer’s requirements, including the customers name and logo on screen.  The use of the touch screen technology enables AML to offer a very cost effective flexible process control system for a diverse range of applications.

Special Annular Load Cell Measures Tensioning System Spring Force

June 1st, 2005

spring-tensioner-200x200The overall tension in the system is controlled by a spring mechanism against an idler wheel.  Some form of load measurement was required, but it had to fit into the existing system, which did not allow space for a standard off-the-shelf load cell.

Applied Measurements Ltd designed and manufactured a custom load cell based on the CCG load cell concept, but to exactly fit the existing mechanical dimensions.  It had to be annular to allow the tensioning system to fit through the centre and to be extremely low in height to replace an existing washer.

To complete the system each load cell was supplied calibrated with a digital indicator containing 4 changeover relays.  Each system operated from a 240Vac supply, giving the system operators a visual reference of the tension in the system, plus the relays controlled an early warning alarm system allowing preventative maintenance.

Hand Force Load Cell Enables Grip Measurement

March 1st, 2005

hand-force-200x200The application required the design of a custom built load cell to enable the customer to determine the ratio between gripping force and friction coefficients of various materials. The length and overall diameter of the finished transducer were stipulated by the customer and it was important that the load cell could be gripped at any point along its length without compromising the sensitivity and accuracy.

This was achieved by utilising the basic single point load cell principles but adapting them to meet the dimension specifications.  To enable transducer to be used in a variety of locations, it was calibrated to UKAS Standards with our portable battery powered PD100 Indicator.

From the initial consultation through design and manufacture took only 6 weeks.  This is a typical example of our design and manufacturing capabilities for custom specials.

UKAS Traceable Load & Force Calibration to 1800kN Now Available

February 1st, 2005

We have now completed the building of a new calibration machine, capable of measuring up to 1800kN in compression and tension using a reference standard load cell traceable to the National Physical Laboratory.

Our facilities now include the capability with three separate test machines, plus dead weights to offer UKAS traceable calibration in tension and compression from 5N to 1800kN.

We offer either a calibration service or the equipment may be hired for customers wishing to carry out their own
calibrations.

Custom Load Pins Designed To Suit Your Needs

January 5th, 2005

dbep-200x200The DBEP series load pins are available in a standard range of capacities and sizes to show the overall scope of this product.  As the majority of applications require specific dimensions we can quickly and easily design and manufacture load pins to meet individual needs.  This can be achieved without the normal high cost and long delivery associated with custom manufacture.

Options include; load ratings from 0-500kg up to 0-1500 tonnes, sealed to IP68 or subsea, built in amplifiers (analogue or digital), bi-directional operation, dual strain gauge bridges,  X-Y force measurement, temperature ranges from –20ºC to +70ºC, while Stainless Steel construction is standard.

The DBEP can be supplied as a pin by itself or complete with shackle, Applied Measurements can also offer a wide range of digital displays or loggers to offer a complete monitoring system.

Click here to view our main load pin page

Three-in-One Pressure Sensor: Transmitter, Switch and Display

December 1st, 2004

The latest product from Applied Measurements Ltd is the DS200 series offering an integrated combination of pressure transmitter / transducer, intelligent pressure switch and digital display.

The DS200 covers ranges from 0-100mbar up to 0-600 bar with either a 4-20mA or 0-10Vdc output, with an overall accuracy of 0.25% of full scale.  There are many options for both pressure connection and for electrical connection, with plug and socket (IP65) or cable (IP67) exits available.

The display has 4 digit resolution with rotation on 2 axes, offering 240º on the front face and 300º from the transducer housing, thus enabling adjustment to its optimum viewing position.

The unit comes standard with one set point with a second set point optional, each set point is freely configurable from 0% to 100% of full scale.  All DS200 transducers utilise a Stainless Steel diaphragm, ensuring compatibility with a wide range of process media and excellent long-term stability.

Digiforce Strikes A Chord at Bison Concrete

March 8th, 2004

digiforce-150x150Bison is the UK’s leading producer of structural, precast concrete products.  Consistent, quality control is vital to maintain the company’s position at the forefront of the sector.

Bison is particularly renowned for prestressed elements, including hollow-core floors, solid composite floors and beams.  Integral to the durability and structural performance of these products is the correct tensioning of the prestressing steel tendons.  There are approximately 30 tendons in the average 1200mm-wide hollow-core floor slab.  These may be up to 160m in length.

The tendon carrier precedes the casting hopper.  It lifts the tendons to the required depth in the slab so that
sufficient concrete cover is achieved during casting.

The tensioning equipment must be tested on a regular basis, but current methods are cumbersome and time-consuming to use.  Accuracy is very much dependent on the skill of the operator.

The unique Digiforce developed jointly by TMS Systems, and Applied Measurements has enabled Bison to achieve rapid, highly repeatable, non-contact tension measurement using the latest technology.

Click here to visit the main Digiforce section

Bison Concrete can be contacted on 01283 495000 or via their website, www.bison.co.uk