5
Pipe strain measurement
Stress and load on moving parts
Aircraft wing strain measurement
Brake and pipe strain measurement
Strain measurement
Measure strain with a 1 ms sampling rate
Connect strain gages directly and measure at a sampling rate of up to 1
ms. Strain gages tend to have long, thin wires that are easily broken, but
that potential pitfall can be avoided by using wireless units so that wire
length is minimized.
Connect strain gages directly
The Strain Unit has a built-in bridge box, allowing you to connect strain gages directly to
its input terminals.
Strain gage Strain gage
Bridge box
Bridge box
STRAIN UNIT U8554 WIRELESS STRAIN UNIT LR8534
Previous models were incapable of measuring temperature accurately in noisy environments due to the inuence of high frequencies, which
caused values to shift or uctuate signicantly. The LR8450 uses a revamped design to dramatically reduce the inuence of high-frequency noise.
Example: Measure temperature by connecting the tip of a K thermocouple to the screw on an inverter’s PWM output terminal (W-phase)
when using the Voltage/Temp Unit U8550 (settings: 100 ms sampling in the 100°C f.s. range).
SiC inverter
• Carrier frequency: 200 kHz
• Motor speed: 500 r/min
Inverter MotorBattery
Reduced inuence of noise
Stable measurement, even at high voltages and high frequencies
Previous data logger LR8450
Previous models exhibit signicant uctuations when the
inverter is operating, but the LR8450 does not.
InternalExternal
LR8450 + U8554 × 2
Strain input 10 ch
Data logger with
external bridge box
Strain-gage-type converters such as load sensors and pressure sensors can be
connected directly and you can make measurement.
ES France - Département Tests & Mesures - 127 rue de Buzenval BP 26 - 92380 Garches
Tél. 01 47 95 99 45 - Fax. 01 47 01 16 22 - e-mail: tem@es-france.com - Site Web: www.es-france.com
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