FLOW, LEVEL & CONTROL


New line of compact


temperature sensors


ith OPTITEMP TRA-C10, TRA-C20 and TRA-C30, KROHNE introduces its new line of compact temperature sensors.


W They follow the


current trend in many industries, where for standard applications,


traditional temperature sensors are


replaced with compact ones, especially in OEM applications. Unlike traditional sensors that have to be configured by choosing from various combinations of measuring insert, thermowell and transmitter, the compact sensors are pre-configured with an integrated transmitter to meet the most common requirements in terms of measuring range, immersion length as well as process and electrical connections. Their main advantage is their size: as in many process and OEM applications there is only limited space for sensors, so their small housing design is a desirable feature. Although they aim at different fields of application, OPTITEMP TRA-C10, TRA-C20 and TRA-C30 share the same basic design: equipped with Pt100 class A sensor element and built-in analogue transmitter, they cover the temperature


range from -50…+150°C/58…302°F


(without integrated transmitter +200°C/392°F) for liquid and gaseous mediums. Accuracy is ±0.15% of measuring range.


KROHNE Ltd Tel: 01933 408518 Web: www.krohne.co.uk


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Advertorial


New VLPSC linear position sensors with digital signal conditioned voltage or current output


ariohm EuroSensor’s new VLPSC linear position sensor adds integrated signal conditioning electronics with an autosensing 0 -10 VDC or 4..20 mA proportional digital output in a tried and tested design based on its flagship VLP series potentiometric output sensors. The digital signal conditioner offers a 12-bit resolution with linearity to 0.1% and excellent repeatability in a choice of nine standard measurement ranges from 25 to 290 mm. Combining the durability of Variohm’s VLP series linear potentiometer position sensor and the convenience of a digital output device, the new VLPSC has self-aligning spherical bearing mounts in a 15 mm square housing design. The new sensor includes the improved O-ring and felt shaft sealing arrangement recently introduced on the VLP series and provides IP65 ingress protection in a compact design that keeps the overall sensor length shorter than competitive devices from other manufacturers. The signal conditioner adaptation also provides a teach function for the start and end datum position references of the sensor which is easily carried out via a simple stand-alone procedure using a separate input rather than more complex computer programming. The VLP measurement technology used in the new sensor features a conductive plastic resistance element that is built up by the application of several layers of specialised printed inks. This combines with a patented elastomer damped multi-fingered precious metal wiper arrangement that ensures smooth and uninterrupted contact with low electrical noise, even under the most demanding physical and environmental conditions. The VLP series is widely used in arduous application areas such as motorsports as well as agricultural machinery and construction equipment where it enjoys an excellent quality and reliability profile. The typical life of the VLP wiper mechanism is over 25 million operations. The VLPSC has an operating temperature rating of -40 to +90 ºC, a supply voltage rating of 24 VDC +/- 20%, and is supplied with 3m leads. Custom versions with alternative stroke lengths, specialised mountings and connectors can be supplied on request.


V Variohm Eurosensor Ltd


Magnetrol® introduces PolarisTM electromagnetic flow meters


closed pipes. It is an accurate and repeatable flow meter that is suitable for a variety of water based and sludge flow applications.


M PACTwareTM for configuration and diagnostics. already diverse


agnetrol® introduces the PolarisTM electromagnetic flow meter, which is capable of measuring liquids with a conductivity as low as 5 µS/cm in


The POLARIS transmitter


is backlit and rotatable with the capability of measuring forward and reverse flow rates, as well as total volume.


HART® protocol allows the use of The sensor can be flanged or


wafer style and is available with an assortment of standard liners and electrode materials. The POLARIS transmitter is the first liquid flow meter offered by MAGNETROL, expanding the


level and flow measurement portfolio that has been established over the last 80 years. Magnetrol Tel: +32 (0)52-451111 Web: water.magnetrol.com


New high-frequency Pressure Transient logger


water network for damaging pressure transients and combatting ‘water hammer’. With a five-year battery life, fast data sampling and large memory, HWM’s Pressure Transient logger is suitable for both long-term surveys and rapid trouble shooting deployments. The new logger features an expanded 4GB of flash memory and uses advanced data compression algorithms to store up to eight billion readings on board. It can operate in the field for weeks or even months while still sampling rapidly enough (25Hz) to effectively monitor for pressure transients. Conventional data loggers are unable to sample at a fast enough rate or store enough data to log and catch damaging pressure spikes, which may only last a fraction of a second. Despite - and in part because of - the speed and brevity of the event, these moments of extreme pressure differential are a major factor in reducing asset lifetime and causing burst water mains. Sources can be traced, but only after they have been identified, analysed and compared against other known network events, such as pump or valve activation, or high consumer activity.


W HWM-Water Ltd. Tel: 01633 489 479 Web: www.hwm-water.com / INSTRUMENTATION enter 811


ater and asset monitoring specialist HWM-Water Ltd has developed a new data logger specifically


for monitoring the enter 810


pirax Sarco has launched a range of pressure-reducing microturbines that generate electricity to reduce utility costs for


S steam system operators.


Suitable for saturated or superheated steam, Spirax Sarco TR


Steam MicroTurbines are


available in two sizes, up to 700 kW. Higher electricity outputs are available on request. A microturbine producing 300 kW of electrical power can generate cost savings of more than £150,000 per year. The greater the steam demand, the more electricity the turbine will generate and the faster the payback. Generally, higher pressure steam distributed from a boiler is conventionally lowered by a pressure reducing station, to match the needs of the heating or


process application. With a Spirax Sarco TR


Steam MicroTurbine, the steam is reduced to the required pressure as it travels through the turbine, with the energy released by the pressure drop being used to generate electricity.


Spirax Sarco Tel: 01242 521361 Web: www.spiraxsarco.com/uk


Tel: 01327 351004 Web: www.variohm.com Microturbines


turn steam pressure reduction into electricity to cut utility costs


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enter 812 INSTRUMENTATION | JUNE 2014 35


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