Products Technology file Easy to use
therma-hygrometers ETI’s 6002 and 6102 therma- hygrometers are easy to use relative humidity and air temperature measuring instruments. The units measure %rh over the range of 0 to 100%rh with a resolution of 0.1%rh and temperature over the range of -20 to 70°C with a resolution of 0.1°C/°F.
The instruments have a clear custom LCD with °C, %rh, max/min, hold and dew point indication. Both display humidity and temperature simultaneous- ly and incorporate a backlit display; and there is an automatic display of both open circuit and low battery. Both instruments are powered by
three 1.5 volt AAA batteries with a min- imum life expectancy of 10,000 hours, and an auto power off facility turns the instruments off automatically after 10 minutes, maximising battery life. The 6102 has an interchangeable probe. ETI T: 01903 202151
www.etiltd.com
Enter 661 Cut costs with a
universal controller By controlling both proportional and process valves across a wide range of gases and liquids, Bürkert’s Type 8611 universal controller for flow, pressure and temperature, is said to cut OEM system costs substantially. The Type 8611 is designed to integrate easily into compact systems and incorporates P.I. and cascade temperature control. It has multiple input and output possibilities and offers the facil- ity for either internal or external setpoint programming.
This integrates proportional/ integral and cascaded tempera- ture control, together with dual indication of process values (i.e. temperature and flow). The unit also offers the choice of 4-20mA, external frequency and PT100 (RTD) inputs. Bürkert T: 01453 731353
www.burkert.co.uk
Enter 663 Strain rings for measuring cyclical processes
A flexible solution for measuring cyclical processes such as tension, compression and torque is provided by Baumer’s strain ring series DSRC. The strain rings offer a good repeatability of 0.1% F.S. Based on the patented STRAIN-MATE principle, the measuring elements of the sensor invariably function in the force shunt circuit, so the sensors cannot be overloaded. Due to their rugged mechanics, the strain rings of the DSRC series are practically inde- structible, claims the company. For quick and easy installation there is no need for surface preparation before installation as the rings can be screwed on, saving time and money. Features include a measuring range of ±1000 microstrains, with one microstrain equal to a strain of 0.001mm per metre of shaft. The output signal per 1000 microstrains is 1mV/V with completed full bridge. In addition to their good repeatability, the strain rings feature a total combined error of <1%F.S. and a rise time (on steel) of <1 millisecond. DSRC AX is a version with an axial connector, while the other products of the series come with a radial connector. All are made of anodised aluminium, with a protective foil of stainless steel, and comply with protection class IP54. These measure surface strain on axles, beams, and cylinders. Applications include measuring the clamping force in injection moulding and pressure casting machines, presses, or dies. Strain rings are also frequently used for calibrating these machines. Baumer
T: 01793 783839
www.baumer.com Enter 662
Sensing and fluidic control systems OEM customers can benefit from
the wide range of custom sensing and fluidic control systems available from Sensortechnics. These systems can be assem- bled into medical devices, instru- mentation equipment and industrial machines.
The modules can integrate components such as sensors – pressure, flow, temperature and humidity, etc. – valves, pumps, microcontrollers, reservoirs, accumulators and the like, to form com- pact OEM subsystems. By using plastic manifolds the three-dimensional configu- ration of flow channels is enabled, thereby eliminat- ing time-consuming and
error-prone procedures. According to the company, integrated systems allow OEM device manufacturers to shorten their design cycles and so save on development costs as well as bring product to market more quickly. Sensortechnics T: 01788 560426
www.sensortechnics.com
Camera available without sensor cover glass
Enter 664
Enhanced laser distance measurement A new laser distance measurement unit from Leuze electronic – the AMS 300i – offers a significant increase in features over the successful AMS200 it will replace. Widely used to determine the precise position of overhead gantry cranes, warehouse picking cranes, or transfer stations and dipping baths, like galvanic plating lines, the current AMS200 is available in two versions. An Interbus version is well established in warehouses serving many of the UK’s supermarkets and a newer version which offers a combination of SSI interface to the drive, along with ProfiBUS to the PLC, is used in the latest warehouses and crane applications. Now, the AMS 300i offers a wide choice of communication protocols, which includes ProfiNET and ProfiBUS as well as EtherNet/IP, DeviceNET, CANopen, EtherCAT and Ethernet TCP/IO or Interbus. The new AMS300 has exactly the same distance from the mounting plate to the front of the lens. This, combined with the same laser time of flight technology, means that the new unit offers a plug and play replacement to the old one. The AMS 300i can accurately measure at distances of up to 300m. Although the AMS200’s high performance meant it was often used at much longer distances than its rated 200m, as warehouses in particular increase in size there is expected to be a demand beyond 250m, and hence the development of the unit to 300m. Leuze electronic
T: 01480 408500 Instrumentation FEBRUARY 2011
www.leuze.co.uk Enter 665
Allied Vision Technologies’ Stingray camera is now available in a version that has no cover glass over the sensor. Available from Stemmer Imaging, this is intended for use for special applications such as laser beam profiling, the use of extended wavelength response coatings or endoscopy, where fibre optics need to be coupled directly to the sensor itself. For UV imaging in particular, the glass used to cover the sensor can absorb UV rays, inhibiting UV sensitivity. This can affect a number of applications such as semiconductor/wafer inspection, fluorescence in biology, DNA analysis, astronomy, monitoring of oil spills, monitoring of corona discharge effects in high voltage electrical transmission lines, and imaging of invisible flames such as hydrogen and alcohol. A sensor can be made more sensitive in the UV region of the spectrum by coating a UV- sensitive phosphor layer directly onto the surface of the sensor. Although this could be done by removing the cover glass from a conventional camera, it is a very specialist procedure which could result in damage to the sensor – so the availability of cameras without the cover glass is an important consideration. Stemmer Imaging T: 01252 780000
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