Signal conditioning
temperature, humidity, and inclination sensors are used. In the lower area, large weights are moved by electric motors to generate the calibration loads. These mechanical processes are monitored by temperature, vibration, and inclination sensors. In the second step, the right measuring technology was selected. The PMX is a multi- channel measuring system with data acquisition and real-time data processing. It offers comprehensive diagnostics and is parameterised via a network-compatible web server. All measured data are recorded and evaluated with a sampling rate of 19.2 kHz. The measurement and diagnostic data are transmitted to an IOT hub via the standard Ethernet interface (TCP / IP). This hub consists of a PC with suitable DAQ software. In the third step, a suitable cloud and evaluation software was determined. What could be better than using the existing HBM cloud? The big advantage of cloud-based measurement technology is that data does not move from one storage location to another. It immediately has a utility value – in many cases even automatically due to artificial intelligence: The HBM Cloud allows the data to be accessed worldwide – depending on the authorisation – and to improve the flow of information as well as the work in international teams. An important pillar of this strategy is the choice of the “right” cloud partner. HBM chose Microsoft Azure here. This provider is particularly convincing due to the availability of dozens of global data centres, in which the data can also be stored in accordance with the legal requirements of the company’s location.
Data model and workflow of the HBM system process
FAST AND FLEXIBLE CONNECTION OF MACHINES TO INDUSTRY 4.0 Nexxed, the Production Performance Manager from Bosch, was chosen as the evaluation software. This powerful tool allows various analysis and evaluation options ranging from setting alarms and creating and sending service orders to the use of artificial intelligence (AI). Self-learning rules are stored which, later enable plant defects to be recognised in advance and reported in time.
RESULTS The locally available raw measured data serve the precise, AI-supported analysis, while the compressed data is transferred via the cloud to the Nexeed Production Performance
Manager. There, the information is turned into instructions, warnings or visualisations for evaluation purposes. Since the Nexeed Production Performance Manager proved to be the ideal solution on the first test station, HBM plans to expand the system to cover a total of 20 test systems with different types of problems. Together, HBM and Bosch ensure that HBM customers receive not only innovative test and measurement technology with analysis and evaluation options, but also that the technology delivers maximum performance in complex software and hardware environments within the shortest amount of time.
HBM
www.hbm.com NEW STRAIN GAUGE AND LOAD CELL SIGNAL CONDITIONERS
cromag’s new TT351 load cell / strain gauge signal conditioners use software to quickly select from a wide variety of sensor measurement options. A USB port simplifies setup on a Windows PC or Android mobile device with Acromag’s Agility app. Software menus help users set the sensor type, bridge configuration, excitation source, filtering level, and input/output ranges. Advanced capabilities let users fine tune scaling of I/O signals, adjust excitation levels, and calibrate the bridge. Universal output supports six ranges including 4-20mA, 0-10V and ±10V. Flexible power accepts a 9-32V DC supply at the terminals and a rail power bus option can supply multiple units from a single connection or establish redundant power. The narrow 17.5mm housing mounts easily on a DIN rail. Hazardous location approvals, high noise immunity, and a -40 to 70°C operating range make these transmitters ideal for use in harsh environments. Software menus help users set the sensor
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type, bridge configuration, excitation source, filtering level, and input/output ranges. Advanced capabilities let users fine tune scaling of I/O signals, adjust excitation levels,
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and calibrate the bridge. Universal output supports six ranges including 4-20mA, 0-10V and ±10V. Flexible power accepts a 9-32V DC supply at the terminals and a rail power bus option can supply multiple units from a single connection or establish redundant power. The narrow 17.5mm housing mounts easily on a DIN rail. Hazardous location approvals, high noise immunity, and a -40°C to 70°C operating range make these transmitters ideal for use in harsh environments. The TT351 input circuit allows true 6-wire bridge measurement and includes an adjustable bridge excitation supply (4 to 11V DC) with a remote sense feature. Sense wires ensure the programmed excitation voltage is applied at the sensor and enable lead-wire compensation. The differential input performs true ratiometric conversions for extremely stable measurements that remain accurate over time and temperature. Plus, lead break detection is inherent in the device. Three-
way isolation between input, output and power increases safety and noise immunity. Advanced signal processing capabilities, variable range input, and convenient USB programming make this instrument very versatile for strain/load measurement.
Acromag
acromag.com September 2020 Instrumentation Monthly
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