Hohe Präzision und Langzeit-Zuverlässigkeit zeichnen die Spezial-Aufnehmer und die Messelektronik von KYOWA Japan aus. Führen Sie jegliche Messungen souverän durch. Das breite Lieferspektrum deckt sämtliche Anwendungsgebiete wie zum Beispiel die Datenerfassung und Überwachung für die Geotechnik, den Grundbau und Bodenmechanik ab.
Sensoren für Porendruck u. Bodenfeuchte
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Bestellung auf Anfrage
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Baumesstechnik Messumformer der T-Serie mit Temperaturmessfunktion
Since the strain-gage transducers, ordinary strain-gage civil engineering transducers cannot measure temperature together with strain, stress or displacement. Thus, thermometer need to be additionally installed when embedding these transducers in concrete structures.
To solve such problems, Kyowa has developed civil engineering transducers with a temperature measuring function. The function is provided for strain transducers, reinforcing-bar stress transducers, stress transducers, joint transducers and water level transducers. These transducers have a platinum resistance thermometer mounted at the output side of ordinary civil engineering transducers.
Independent Measurement of Physical Quantity and Temperature during Measurement
The platinum resistance thermometer sensor is connected to the output of the bridge circuit and has no electrical concern with the input of the measuring instrument, thereby enabling transducers in T series to measure physical quantities as usually. Through a different circuit from the physical quantity measuring circuit, temperature is measured based on resistance change of the platinum resistance thermometer sensor. Generally, instruments providing constant-current bridge excitation are used for civil engineering transducers with a temperature measuring function to eliminate any adverse effect of the resistance of extension cable.
Sensorspeisung in der Baumesstechnik
Amplifiers used in conjunction with civil engineering transducers are available in 2 bridge excitation systems: constant voltage and constant current. These two systems have their respective features shown in the table below, to permit selection according to measurement purposes and applications.
All KYOWA strain gage transducers, including those for civil engineering, are calibrated at the factory using the constant voltage system.
Bridge Excitation: |
Constant-voltage |
Constant-current |
|---|---|---|
|
Civil engineering transducers |
Measurement of physical quantity possible |
Measurement of physical quantity possible |
|
T series transducers |
Measurement of physical quantity (only engineering quantity) possible |
Temperature measurement together with physical quantity possible ※ |
|
Applicable gage bridge resistance |
60 to 1000Ω |
350Ω |
|
Calculation for compensation of declined sensitivity due to cable extension |
Required |
Not required |
|
Applications |
Measurement with cable not extended too long. Mainly for experimental measurement |
Measurement via extension cable, mainly for field measurement |
※T series is provided with temperature measuring function.
Produktgruppen
Kyowa Electronic Instruments
KYOWA ELECTRONIC INSTRUMENTS CO., LTD. ist ein japanisches Unternehmen, das bereits seit 1951 alle Kernelemente der industriellen Dehnungsmesstechnik abdeckt.