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DIGITAL COMBINATION TRANSMITTER Keller has launched a fully functional digital combination transmitter for pressure and temperature. In the LD series, all the electronic components are accommodated in a laser-welded stainless steel housing filled with silicone oil. Measuring 11 mm in diameter, the housing contains the sensor technology, the (mathematical) compensation coefficients, the digital signal processing and the I2C interface for simple, loss-free integration into higher level systems. Made of stainless steel or Hastelloy, the housing not only acts as a Faraday cage but also offers appropriate protection against electromagnetic radiation and potential environmental influences. With Keller’s Chip-in-Oil technology, short signal paths with high impact and vibration resistance are realised. Six standard measurement ranges extend from 1 to 200 bar with a compensated temperature range of -10 to +80°C. Accuracy is rated as better than ±0.15%FS and a total error band of less than ±0.5%FS is attained between 0 and 50°C. The temperature measurement accuracy is ±2 K. Transmitters in the series are optimised for battery-powered applications, eg, during A-to-D conversion, current consumption is ~1.5 mA, dropping to ~0.1 µA in ‘idle’ mode. The supply voltage range of 1.8 to 3.6 VDC corresponds to a normal microprocessor environment. The Series 4 LD is the smallest of four versions. Larger models measuring 15, 17 and 19 mm in diameter are also available for relative pressure measurements, offering an additional temperature range (-40 to +110 °C) without changes to the electrical characteristics. KELLER AG für Druckmesstechnik www.keller-druck.com

24 VDC, 15 A BUFFER UNITS DIN rail-mount power supplier PULS has released the UC10.241 and UC10.242 DC buffer modules. They extend the buffer times currently offered by the UF20.241 and UF20.481 by utilising electrochemical double layer capacitors (EDLC), which can

IF YOU CAN’T

MEASURE IT, YOU CAN’T CONTROL IT

CERLIC MULTITRACKER & MULTISERIES SENSORS

provide a backup time of up to 33 s for a 10 A load. Unlike with DC UPS systems which utilise batteries, no cabinet ventilation is required. With a short charging time compared to that of batteries, the units are rapidly back in ready mode following a discharge. They also maintain a regulated output voltage in buffer mode of 22.5 V and are capable of providing full output power between -40 and +60°C. With quick-release spring clamp terminals, wiring is quick and easy. Other features include an inhibit digital input which, when activated, turns off the output and buffering; and ready relay outputs to provide unit status back to a control system. The modules have an operational lifetime expectancy of 10+ years. Control Logic Pty Ltd www.control-logic.com.au

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CCEZY.COM.AU +61 2 9542 8977 Distributors through Australia and New Zealand

Control Components

Jun/Jul 2015 - Sustainability Matters 43

Profile for Westwick-Farrow Media

Sustainability Matters Jun/Jul 2015  

Sustainability Matters is a bi-monthly magazine showcasing the latest products, technology and sustainable solutions for industry, governmen...

Sustainability Matters Jun/Jul 2015  

Sustainability Matters is a bi-monthly magazine showcasing the latest products, technology and sustainable solutions for industry, governmen...