PRODUCTS EDITOR’S CHOICE REDUCING THE COMPLEXITY OF CALIBRATING POWER METERS AND ANALYSERS


The Yokogawa LS3300 is a new dedicated, stand-alone calibrator that is designed to reduce the cost and complexity of calibrating power meters and analysers with accuracies up to 0.15 per cent. The LR3300 combines a wide output (up to


1,250V and 62.5A) with high accuracy (450ppm or 0.045 per cent) and high stability (100ppm or 0.01 per cent for one hour). For larger current outputs, up to 180A can be obtained by synchronising the outputs of multiple units. For the calibration of three-phase power


meters, it is possible to synchronise the outputs of two or three LS3300 instruments using master/slave connections. Other features include the capability for direct calibration of the current sensor inputs of a clamp-on power meter using


SENSOR SYSTEM HELPS REDUCE SPINDLE FAILURES


Schaeffler’s engineers have developed a system with the objective of reducing spindle failures by enabling very fast spindle deactivation in the event of a crash (collision). Furthermore, the system allows the machine operator to detect these unfavourable operating conditions and to make targeted adjustments to the machining process. The system measures the displacement of the


spindle shaft under load in high resolution and in five spatial directions – three translational and two rotary. This, combined with the matching expertise in rolling bearings, makes the kinematic conditions in the bearing and thus the operation-related parameters such as pressure, spin/roll ratio and cage pocket clearance, to be clearly calculated. The sensor ring transmits an electrical warning signal to the machine’s control system if the deflections measured on the rolling elements exceed a specific threshold, which is set individually for every spindle and machine type. The threshold limit can also be individually defined for other drive components that have a lower load limit than the spindle and whose loads correlate with those of the spindle. Another feature in the age of Cloud computing is


that all of the software and the required algorithms are integrated into the sensor technology. This means that the system requires no further components. The system is locally functional and transmits an individual warning signal to the


the instrument’s auxiliary output, and notification of when the output becomes stable to maximise the accuracy of the measurement. All power meters and analysers


need calibrating to confirm their performance and to satisfy the requirements of quality systems such as ISO9001. As a dedicated instrument for calibrating lower-accuracy power meters at commercial mains frequencies and up to 1.2kHz, the LS3300 offers a cost- effective solution for users who need to calibrate higher volumes of power meters. Potential customers for the LR3300 include


accredited calibration laboratories, private calibration companies, companies that manufacture measurement instruments such as power meters, clamp power meters and smart


machine’s control system, which allows for the detection of a crash as well as providing long-term protection for machine tool spindles. The displacement


measurement using the sensor ring and the integrated load monitoring has reached the pilot production stage and the first size is now available for customers to test in practical applications. What is more, Schaeffler’s engineers have developed a new analysis tool for optimising the degree of spindle utilisation. With this system, the deflection collective that is measured by the sensor ring during the machining process is visualised over the time axis in addition to a threshold value being defined. The machine operator will know the degree to which the spindle capacity in each machining process is being utilised as a percentage with a high level of accuracy and therefore will be able to adjust the machining process even more precisely in terms of capacity utilisation and operating life for each machine. This means that harmful overloads are prevented despite high spindle loads. Safe operation in the limit range allows the operator to increase productivity and to also benefit from longer spindle operating life and less frequent machine shutdowns.


Schaeffler www.schaeffler.com LTE CATEGORY M TURNKEY MEASUREMENT SOLUTION


Anritsu has announced a LTE Category M software release for the Universal Wireless Test Set MT8870A to support RF tests of LTE Category M devices. The release includes Category M FDD Uplink Tx measurement software (MX887065A), Category M FDD Downlink Waveform files (MV887065A) and Fully Automatic Measurement Program, providing fast and automatic testing in accordance with the 3GPP LTE Category M RF test specifications. The Universal Wireless Test Set MT8870A is a measurement instrument for


mass-production of various types of wireless communications equipment and modules. Four high- performance tester units are installed in the main unit and each unit supports parallel independent measurement for evaluation of up to four wireless devices and modules. The MT8870A already fully supports 2G/3G/LTE/LTE-Advanced/NB-IoT, WLAN/Bluetooth, GPS, and FM evaluations. The automatic measurement program eliminates the need to develop control programs and cuts


development time down. Anritsu


6 DECEMBER/JANUARY 2018 | INSTRUMENTATION www.anritsu.com / INSTRUMENTATION


meters, and calibration divisions and repair service divisions of companies that use power measuring instruments in production line testing. At the top end, where the highest accuracy is


required and also where the application consumes power at frequencies higher than 50/60Hz, an ISO 17025 accredited calibration at higher frequencies is required to prove the performance of the power analyser for the application, and thus to validate the instrument for compliance testing. The Yokogawa European Standards laboratory is


the first non-governmental ISO 17025 accredited laboratory to offer power calibrations up to 100kHz. An LS3300 can therefore be delivered with an accredited calibration enabling it to be quickly incorporated into a customer’s system.


Yokogawa www.yokogawa.com


A NEW ERA IN RUGGED DAQ


NI’s new FieldDAQ devices are the most rugged NI DAQ devices ever created. They can acquire accurate, reliable measurements in the most severe test cell and outdoor environments, including rain, sleet, snow or mud. FieldDAQ devices have an ingress protection rating up to IP67 (dust and water resistant), can operate in -40°C to 85°C environments and can sustain 100g shock and 10g vibration.


These DAQ devices are built on the


flexible and configurable hardware and software platforms that NI is known for, which sets them apart. With open and expandable FieldDAQ solutions, test engineers can keep pace with product design cycles and help reduce the overall cost of test, as opposed to the limitations of existing devices with functionality defined by closed, proprietary software. FieldDAQ also incorporates


Time Sensitive Networking (TSN), the next evolution of the IEEE 802.1 Ethernet standard, providing tight synchronisation over a distributed network of DAQ nodes without additional cabling or complex programming.


NI ni.com


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