Instrumentation
Calibrator is self-contained and portable T
he HygroGen is a self- contained transportable humidity and temperature
calibrator that enables users and calibration engineers to accurately and rapidly calibrate any type of humidity instrument. The launch of the second generation Airchip3000 based calibrator takes transportable humidity calibration to a new level of performance and ease of use. Stabilisation of relative humidity (RH) set-points within the HygroGen’s test chamber is typically achieved within 5 minutes. This means a three point RH calibration can easily be performed within 30 minutes, which is at least 75 per cent faster than other typical systems. Temperature control of ±0.05°C and embedded AirChip3000 technology means that extremely precise and stable conditions are assured throughout the calibration test.
HygroGen takes the calibration laboratory to the instrument or transmitter so that full system validation may be performed without the need to remove equipment from operation. The touchscreen user interface allows rapid set-point change and display of actual conditions in both a numeric and graphic format.
Embedded HW4 software supports real- time display and data acquisition, either on the integrated 8-in LCD or using an external monitor
through the HygroGen’s standard DVI interface. Nine USB ports allow direct connection of probes without the need for an external power source. Thanks to the significant calibration time-saving possibilities, the HygroGen delivers a rapid return on investment. Embedded PC technology means a simple upgrade path for additional functionality and performance enhancements. The standard heated chilled mirror sample loop means that for the very highest standards of performance, state-of-the-art reference instrumentation can be integrated into the HygroGen’s control and reference systems. n
Enter 49 or ✔ at
www.engineerlive.com/epe
ROTRONIC AG is based in Bassersdorf, Switzerland.
www.rotronic.ch
Dual-bridge load cells provide
sensor redundancy for critical work
says that dual-bridge load cells can be very effective.
W For critical structural testing and
monitoring in the aeronautical and automotive industries, for example, a load cell with two independent sets of strain gauges combines sensor redundancy within a single unit This permits two sets of signal conditioning electronics to be deployed so that, in the event of the failure of one, the second signal conditioning set maintains system integrity until the fault can be rectified. Additionally, under normal operating conditions, the two outputs can be compared for greater certainty of data integrity, allowing rapid diagnosis of any faults. RDP’s dual-bridge load cells are not only accurate and reliable, but are also cost- effective thanks to the dual outputs. n
For more information, visit
www.rdpe.com
here space limited yet data integrity is an essential requirement, RDP Electronics
Keeping the temperature up at one of Austria’s biggest natural gas stations
T
he natural gas station Strasshof is one of the biggest natural gas
stations in Austria. Bartec received the order for the engineering and supply of trace heating for the conveyer pipes as well as the condensate pipes. The target was to keep the temperature of the natural gas on a constant level as well as to avoid the pipes getting frozen. The used cable was the self-
limiting parallel heating cable PSB as well as the self-limiting parallel heating cable HSB. The convincing advantage of these two kinds of cables is their ability to be used in explosive atmospheres without any temperature limiter. Consequently, costs for further components could be saved. 4000m of the
cables were used. The cable was divided in 280 heating circuits, so that the output power of the heating conductor would not generate an inadmissibly high temperature which, in its turn, reaches or exceeds the temperature limit of temperature class T3 in explosion- hazardous areas.
The system provider Bartec did not only provide the heating cables and the connection kits but also the required control technology in order to offer a complete solution from one hand to OMV. n
Enter 49A or ✔ at
www.engineerlive.com/epe
BARTEC GmbH is based in Vienna, Austria.
www.bartec.de
www.engineerlive.com 49
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