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MSR40 Vibration Data Logger With Wireless Technology
Case study Isofer Pfeifer AG
The Swiss company Pfeifer Isofer AG, which is part of Pfeifer Holding, is involved in the design and construction of protective shoring based on high-performance nets and special braking elements, in addition to the sale of conveying, lifting and safety products. One of the core areas of Pfeifer Isofer’s “protective shoring” business unit is the development and manufacture of active and passive protection systems against rockfall and mudflows, as well as for avalanche prevention.
In the latest tests with the ISOSTOP 5000 Ev protection system, special MSR40 data loggers from MSR Electronics GmbH were used for wireless force measurement.
The MSR40 data loggers are specially adapted versions of the MSR165 shock and vibration data logger. They record in their internal memory, via their analogue inputs and fast A/D converters, the voltages in the mV range that can be tapped at the internal measuring resistors (strain gauges) of the load cells, at a frequency of 1000 Hz (with 2 mV/V slope of the recording curve).
The special feature of the MSR40’s transmitting/receiving units, which operate in the 868 MHz ISM frequency range, is that this allows the measurement cycles of all the data loggers used to be started at exactly the same time. The data can be read out via radio and USB.
The detailed user report on the use of the MSR40 data loggers at Pfeifer Isofer can be found here: MSR40 wireless data logger measures voltage signals from load cells in rockfall protection systems
Technical specifications of the MSR40 wireless data logger
| MSR40 measuring system: General technical specifications | |
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The MSR40 measuring system operating in the 868 MHz ISM band consists of the MSR40BS base station and the MSR40DMS measuring units. If required, the system can be supplemented with one or more MSR40RELAIS to control cameras. |
| Frequency range: | Licence-free licence range 868 MHz (EU version) |
| Housing: | PC, IP67 |
| Dimension: | Housing without antenna: 75 x 70 x 120 mm (W x H x L) |
| Weight: | approx. 280 g |
| PC-Software: | Free Setup, Reader, Viewer & Online software for data collection and analysis (Windows XP/Vista/7/8/10). |
| Operating conditions: | -20 °C to +65 °C |
| Storage conditions: |
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| Standards: | The MSR40 measuring system complies with the EU directive RoHS / WEEE. |
| MSR40BS base station | |
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The MSR40BS base station can manage up to 16 MSR40DMS or MSR40RELAIS. |
| Antenna length: | 85 mm (extension cable possible) |
| Button: | Connection of a manual start button |
| Power supply: | via USB connection |
| Interface: | USB |
| MSR40DMS measuring unit | |
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The MSR40 strain gauge measuring units record the voltages in the mV range that can be tapped at the internal measuring resistors of the load cells. |
| Antenna: | Wire antenna |
| Memory capacity: | over 270 events (20s measuring time each) |
| Sampling rate: | 1 kHz |
| Measurement input: | for DMS (2mV/V) |
| LED: | for status display (ready/measuring/charging) |
| Power supply: | Up to 5 days of autonomous operation with integrated Li-Po battery 2400 mAh. The battery is charged via the USB connection. |
| Interface: | USB |
| MSR40RELAIS | |
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Optional MSR40RELAIS with wire antenna to control a camera. |