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69
Preparations
Input settings and sensitivity settings for some representative sensors are
shown below for reference. The sensitivity value differs for each sensor.
Sensor example
Inp
Sens
Sensitivity
Sensor sensitivity
unit
DC output of general measuring
device or sensor, or AC output of
vibration meter
DC
-----
No setting
1
EU
X.XXE+XX
V/EU
AC output of general measuring
device, sensor, vibration meter,
sound level meter
AC
-----
No setting
1
EU
X.XXE+XX
V/EU
Microphone: UC-52
+
Preamplifi er: NH-22
CCLD
MIC
Sensitivity level
(-0.1 to -99.9)
dB
(0 dB=1 V/Pa)
Piezoelectric accelerometer
(with built-in amplifi er):PV-90I
CCLD
PICK
Voltage sensitivity
(0.01 to 99.9)
mV/(m/s
2
)
Piezoelectric accelerometer: PV-85
+
Charge converter: VP-40
VP4x
PICK
Charge sensitivity
(0.01 to 99.9)
pC/(m/s
2
)
Sound level meter NL series
AC
SLM
Voltage sensitivity
(40 to 140)
dB
Vibration level meter:VM-53
AC/DC
VM
Voltage sensitivity
(40 to 140)
dB
Note
When Inp is set to AC, a high-pass fi lter with a cutoff
frequency of 0.3 Hz is applied. However, if the input
signal contains high-level DC components that exceed
the input range, overload may occur in the DA-21.
Summary of Contents for DA-21
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