Electricity + Control February 2017

ROUND UP

SENSORS + SWITCHES + TRANSDUCERS

Robust submersible pressure sensors

WIKA has extended its portfolio by two high-performance submersible pressure sensors with a slimline design. As a result of the many options in a single instrument, they offer an exceptionally attractive price-performance ratio. The model LW-1 is suitable for level monitoring of water and wastewater. The model LF-1 features long-lasting resistance within all common oils and fuels. Both submersible pressure sensors are, with their slimline case diameter of 22 mm (< 1 inch), ideal for use within pipes. Thanks to a newly developed sealing concept, special cable and further options, such as Ex and overvoltage VEGA launched theVEGAPULS 64 in 2016, and a new standard was set for radar sensors.This was the first radar sensor that operated at a frequency of 80 GHz, producing a beam angle of just 3°. The focused beam angle allows the sensor to be used in vessels with internal installations or heavy build up on the walls, producing accurate measurements even with foam, condensation or tur- bulent product surfaces. With the new entrant to the market, the VEGAPULSWL S 61 has reached what John Groom (VEGA Group Director for Africa), refers to as the ‘holy grail’ of achievement in the development of radar technology. Designed specifically for the water supply and sewerage sectors, this radar sensor comes

protection during lightning strikes, the instruments work reliably even under harsh conditions.The new submers- ible pressure sensors are available with a variety of output signals.The low-power signals enable battery operation from 3,6 V, and its life is increased enormously through the fast response times and a low current consumption. The monitoring of the medium temperature is possible via an optional analogue output.The parameterisation of unit and error signal, and also the scaling of themeasuring range, is carried out via HART communication. Enquiries:Tel +27 (0) 11 621 0000 or email sales.za@wika.com

Radar level sensor for water at the cost of ultrasonic

with an equivalent price tag to the ultrasonic sensors, but with so many more added advantages.TheWL S 61 comes standard with built-in Bluetooth capability, a submersion-proof housing and an encapsulated antenna system. Mounting options include a wall holder and a ceiling reflector for awkward angles. The integrated Bluetooth module enables wireless communication with a smart phone, tablet or PC, making commissioning of the instrument and diagnosis of operating parameters simpler and safer. As an aside, VEGA guarantees that Bluetooth can be retrofitted to any of their sensors sold since 1999. (See page 39). Enquiries: Chantal Groom.Tel. +27 (0) 11 795 3249 or email Chantal.groom@vega.com