SWOPP Probes Create A Window On Processing

SWOPP Probes Create A Window On Processing from Aptifirst

By: Aptifirst  08/04/2013
Keywords: process control, control equipment, remote monitoring

Aptifirst’s SWOPP range of sapphire window optical process probes is ideal for laboratory, pilot plant and inline monitoring and for quality and process control. SWOPP probes, using the 0.17-5.5-micron optical transmission range of sapphire, can work in the near-infrared (NIR), visible and ultraviolet (UV) parts of the spectrum, permitting various spectrometric techniques to be employed. These precision-engineered probes allow, via fibre-optic connections, spectrometric or optical inspection to be carried out online during chemical reactions, mixing and processing operations. A great many of measurement tasks in process control, like monitoring of reactions, can be achieved particularly with FT-NIR (Fourier Transform Near Infra-Red) spectroscopy. Additionally, UV (ultra-violet) and visible spectroscopy and also simple visual observation with CCTV may be engaged to assay various diverse aspects of a material’s condition and composition during processing in real time, with the data capable of being used for process control. The content of highly complex mixtures can be determined simultaneously with solid, liquid or gaseous entities. The precision-polished sapphire lenses are resistant to abrasion and chemical attack, and the probes can operate at up to 400°C (750°F) and at pressures of up to 700 bars (10,000psi) or optionally greater, so that in-process materials may be monitored for parameters such as degradation, moisture content and additive levels in real time and under live manufacturing conditions. The SWOPP probe bodies are generally machined in stainless steel, although other materials such as Inconel are possible. The geometry may be tailored to suit specific applications, for example, to fit a standard ½”-20-UNF “Dynisco”-type transducer port with a 45 degree sealing face, in ¼” or 1/8” diameter tubes for sealing with “Swagelok”-type fittings, and with right-angled bends, for example to fit the nozzle of an injection moulding machine. The probes can be supplied for transmission mode, where two probes are mounted facing each other across the process stream, with one probe supplying the light source and the other receiving the signal attenuated by the test material, or they can be supplied for reflectance mode. Here, a single probe has a central optical fibre through which the light source is beamed, and this central fibre is surrounded by typically 6 or 7 other fibres that collect the reflected or back-scattered attenuated light and convey it to the detector of the spectrometer. SWOPP probes can be supplied with an integral optical fibre with a ’tail’ of a suitable length to suit the user’s circumstances or with an industry-standard optical-fibre connector such as the SMA 905. Alternatively, they can be supplied as a holder for a standard fibre-optic bundle, so that the SWOPP probe may be left in situ so as not to disturb the process, while the fibre-optic spectrometer is employed elsewhere. The SWOPP01 model is just such a probe. In addition, the sapphire window lenses can be machined for precision focal lengths. Roy Carter, technical director of Aptifirst Ltd, said: ’SWOPP probes are precision-machined adaptors that will provide a window onto materials as they are being processed and transported. ‘With real-time spectroscopic analysis, information can be provided to enable early decisions to be made regarding processing conditions, additive levels, etc, to minimise wastage, optimise energy usage and maximise productivity,’ he added. SWOPP sapphire window probes have applications in many sectors of science, technology and industry. For example, the major application areas in the food and feed industry include dairy and meat, beverages, bakery ingredients and condiments as well as grains, seeds, feed and forage. Here, parameters like protein, fat, starch, moisture or dry matter can be analysed as well as more specialized parameters like alcohol or nitrogen content. In the chemical industry, parameters including hydroxyl value, acid number, saponification value, iodine number, moisture content, homogeneity, and, of course, the rate and state of chemical reactions may be monitored. In petrochemicals, octane- and cetane number, distillation-, flash and cloud point, aromatic content, and PIONA analysis, are performed, particularly by FT-NIR techniques. For polymer technology applications, density, viscosity, cross-link density, end-group analysis, stabilizer or monomer content may be determined. In the paper industry, applications include cellulose content, fillers, glues and wet strength resins, silicon content, grammage and degree of wet expansion; the pharmaceutical and cosmetics industries employ spectrometric technology to effectively and cost efficiently solve a large range of tasks, eg for checking active ingredient concentration during processing. As well as SWOPP probes, Aptifirst supplies a wide range of other equipment including materials testing instruments and instrumentation for radio telemetry, strain gauge and load cell conditioning, acceleration, temperature and process control, weighing, datalogging, temperature monitoring via GSM text messages and emails a Limiting Oxygen Index flammability tester, die swell, load cells, pressure sensors, accelerometers, and more. Also, Aptifirst supplies precision extrusion dies for rheological studies, and designs and building special-purpose and prototype instruments, including bespoke software.

Keywords: control equipment, fiber optic, Industrial Process Control, Industrial Process Control Equipment, Instrumentation, materials testing, monitoring equipment, process control, Process control equipment, remote monitoring

Other products and services from Aptifirst

SWOPP03R Sapphire Window Fibre Optic Reflectance Probe from Aptifirst thumbnail
20/05/2015

SWOPP03R Sapphire Window Fibre Optic Reflectance Probe

The SWOPP03R sapphire window fibre optic reflectance probe allow on-line, real-time infra-read, NIR, UV or visible light spectroscopy to be undertaken on process lines, extruders, injection moulding machines and other manufacturing plant, as well as in research and development applications.


Cost-Effective DIN-Rail Mounting On/Off Temperature & Process Regulator from Aptifirst thumbnail
02/07/2014

Cost-Effective DIN-Rail Mounting On/Off Temperature & Process Regulator

A cost effective and versatile DIN-rail mounting process monitor and controller with twin alarm set-points, "universal" input options, and a choice of power supply options.


ICA6 Miniature Embedded Analogue Strain Gauge Amplifier with ±10V Output from Aptifirst thumbnail
03/04/2014

ICA6 Miniature Embedded Analogue Strain Gauge Amplifier with ±10V Output

The ICA6 is a high stability, embeddable, miniature strain gauge signal conditioning amplifier designed for integrating into load cells and similar transducers in order to provide a ±10V output.


Fault Monitor and Alarm for Multiple Load Cell Installations from Aptifirst thumbnail
07/12/2013

Fault Monitor and Alarm for Multiple Load Cell Installations

The LCI Fault Monitor and Junction Box is a useful device for multiple load cell installations such as silos and mixing vessels, as it will quickly detect a fault in any load cell thereby preventing expensive weighing errors and waste of materials.


Miniature accelerometer is extremely robust from Aptifirst thumbnail
29/07/2013

Miniature accelerometer is extremely robust

The CTA107 series of miniature accelerometers is only 25 x 15 x 15mm, available in ranges ±2g to ±200g, and will safely withstand an overload of up to 4,000g.


S-Beam Loadcells are accurate and well priced from Aptifirst thumbnail
12/06/2013

S-Beam Loadcells are accurate and well priced

FBB and FSB S-Beam load-cells are robust, cost-effective, accurate and reliable transducers for measuring load, force and weight in a wide variety of applications.


PR486 Load Cell Amplifier has a wide choice of connectivity options from Aptifirst thumbnail
12/06/2013

PR486 Load Cell Amplifier has a wide choice of connectivity options

The PR486 range of load-cell amplifiers provide a versatile and robust solution to measuring weight, electronically, with DeviceNet, Profibus, Ethernet Modbus, Serial RS232 or RS485 or analogue 4-20mA or 0-10V outputs.


Digital module connects strain gauges and load-cells easily from Aptifirst thumbnail
07/05/2013

Digital module connects strain gauges and load-cells easily

DSC digital strain gauge amplifiers are precise, easy-to-use, cost-effective means of connecting devices such as load cells, torque transducers and pressure sensors to digital networks of computers or PLCs.


Computer Controlled Workability Test For Fresh Cement And Concrete from Aptifirst thumbnail
08/04/2013

Computer Controlled Workability Test For Fresh Cement And Concrete

The CTPT3 Computer-controlled workability tester allows rapid testing the workability or flow properties of fresh cement paste and concrete samples without operator variability, and produces real engineering data.


CTA304 Rugged Triaxial Accelerometers from Aptifirst thumbnail
15/03/2013

CTA304 Rugged Triaxial Accelerometers

Rugged cost-effective accelerometers to measure in 1, 2, or 3 axes.


Amp Helps Team GB Go For Gold! from Aptifirst thumbnail
21/08/2012

Amp Helps Team GB Go For Gold!

Amp Helps Team GB Go For Gold!


Monitor Multiple Temperatures by SMS Text Message! from Aptifirst thumbnail
24/05/2012

Monitor Multiple Temperatures by SMS Text Message!

The AGT Series allows multiple temperatures to be monitored via SMS text message and.or email, and will warn you when the tempreature strays outside your pre-set limits.


Precision engineered rheometry dies from Aptifirst thumbnail
11/05/2012

Precision engineered rheometry dies

Aptifirst Ltd has supplied specially designed extrusion dies to a major polymer research and development organisation to allow precise measurements


ARPS Text Message Remote Controlled Power Sockets from Aptifirst thumbnail
17/04/2012

ARPS Text Message Remote Controlled Power Sockets

ARPS is a remote-controlled power socket with integral temperature sensor that is programmed and reports by SMS text message.