Electricity and Control October 2022

MEASUREMENT + INSTRUMENTATION

connected directly to a PLC without any barriers, which makes it especially easy to use. A loop-powered analogue signal of 4 … 20 mA is suitable for more than 90% of all applications. VEGA also provides Modbus and the SDI-12 standard proto col for the hydrological market.

technologies enable VEGA to design instruments for applications never previously considered. Together with high capacity batteries and new wireless communication standards, such as LORA, the company now has the technology to design wireless radar sensors for totally new areas of use. Radar is ideal for Industry 4.0 and related, cutting-edge applications. □

Established as a specialised technology for wide pressure and temperature ranges, radar sensors also offer an ideal option for other applications.

Acknowledgements: This article is edited and abridged from an interview with Jürgen Skowaisa, conducted by and first pub lished in Processing & Control News – PCN Europe.

Wider applications Whereas radar measurement used to be considered a ‘last resort’ for niche industries, level measurement with radar technology is now widely attractive. The new microwave

For more information visit: www.vega.com/en-za

MEASUREMENT + INSTRUMENTATION : PRODUCTS + SERVICES

Simple cost-effective level switches

in brass, aluminium and PVC with a closed cell float. The simple M2 switch offers level controls with two electrical contacts. The operation of the M2 is based on the drive of two reed contacts, located inside the meas uring rod, by a magnetic float. It is also available with a flanged or threaded process connection and has the same operating temperature range of -30 to +55°C – 90% RH. Connections are brass, aluminium and PVC with a closed float cell. The only moving elements are the floats that move for hydrostatic thrust along the measuring rod, so the switches are rug ged and there is limited need for maintenance. The switches are fitted with a SPST or normal closed contact, and an operating float of 180°C, which can also be opened normally. Up to six switches can be supplied from one sensor. The instruments can be tailored to meet specific customer requirements. For more information contact GHM Messtechnik South Africa. Tel: +27 (0)11 902 0158, Email: info@ghm-sa.co.za

“High quality and the option for customisation to specifi cations, plus a fast manufacturing base for large quantity orders are key features of the S1 and M2 level switches from Val.Co, a leader in the supply of process instrumen tation,” says Jan Grobler, Managing Director of GHM Messtechnik South Africa. “The level switches offer exceptional quality, incorpo rate internal temperature measurement devices and are cost-effective. They are specifically designed for indus tries where hydraulic oil tanks are used, such as the yellow metal industry, mechanicals and automotive industries,” Grobler adds. The simple S1 switch offers level controls with one electrical contact. Reliable, compact and easy to in stall, it is designed to offer a range of level switches to meet the need for monitoring levels in small tanks. It is available with a flanged or threaded process connection and can operate in ambient tempera tures from -30 to +55°C – 90% RH. Connections are

The level switches can be tailored to meet specific customer requirements.

24 Electricity + Control OCTOBER 2022