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Making Preparations for Measurements
ATTENTION
• Le fait d’appliquer une tension dépassant les valeurs indiquées ci-dessous sur
701275 (ACCL/VOLT) risque d’endommager la zone d’entrée.
Tension d’entrée maximale : 42 V (c.c. + crête c.a.)
• Lors du branchement des capteurs d’accélération, faire en sorte que le courant
de polarisation n’alimente pas le capteur. Cela risquerait en effet d’endommager
les circuits internes des capteurs d’accélération.
• SL1000 ne prend en charge que les capteurs d’accélération alimentés par
un courant constant avec un courant d’entraînement de 4 mA et une tension
d’entraînement de 22 V.
Connecting the Acceleration Sensor
When Connecting Built-in Amplifier Type Acceleration Sensors
The SL1000 allows built-in amplifier type (low impedance) acceleration sensors to be
directly connected. To connect built-in amplifier type acceleration sensors, use BNC
cables. Use cables that are appropriate for the acceleration sensors being used.
Connect the acceleration sensors with the bias current turned OFF. After connection, turn
ON the supply current to the acceleration sensors to make measurements.
When Connecting Charge Output Type Acceleration Sensors
Since the charge output type (high impedance) acceleration sensors do not have a built-
in amplifier circuit, they cannot be directly connected to the SL1000. Use either of the
following two methods to connect the sensors.
Using the Charge Amplifier
Connect the charge output type acceleration sensor to a charge amplifier using a
highly isolated low-noise cable. The acceleration signal (charge signal) that has been
converted to a voltage signal by the charge amplifier is applied to the SL1000 using a
normal coaxial cable. The SL1000 measures the signal in the voltage measurement
mode. The measured data can be converted to acceleration values using the scale
conversion function of the SL1000.
701275 (ACCL/VOLT)
(voltage measurement)
Charge output type
acceleration sensor
Normal
coaxial
cable
Highly
insulated
low-noise
cable
Charge amplifier
SL1000
3-37
IM 720120-01E
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App
Index
3.10 Connecting Acceleration Sensors