Vibration sensor KSI

The vibration transducers of the KSI series are piezo sensors with integrated electronics and are used to detect absolute vibrations on machines and system components in the frequency range 2Hz to 10kHz.

The output signal is given directly as an effective value or peak value of the acceleration in 4...20mA. The sensors are suitable for direct connection to standardised measuring and control technology, e.g. PLC, control panel instruments or limit value relays.

  • Particularly suitable for higher frequency vibrations
  • Supply directly from the current loop
  • Robust, sealed stainless steel housing IP68
  • Insulated housing to avoid earth loops
  • Double shielding for improved EMC protection
  • M12 connector for easy mounting
  • Protection against wrong polarity / overvoltage
  • Measurement in all directions
  • Temperature range from -40 ... 100°Cn

Technical data

 
KSI84-AR
KSI84-AP
Measured variable
Effective value acceleration
Peak acceleration
Measuring principle
Piezo, Shear principle
Piezo, Shear principle
Output
4 ... 20mA
4 ... 20mA
Supply voltage
10 ... 30VDC
10...30VDC
Nominal measuring range
10/20/50/100/200/500 mV/g ±2%
10/20/50/100/200/500 mV/g ±2%
Linear measuring range amin/amax
2 ... 112,5 %
2 ... 112,5 %
Fracture acceleration
5000g
5000g
Linear frequency response f5%
0,4 ... 13000 Hz
0,4 ... 13000 Hz
Lower cut-off frequency
1,5/3/10/30/100/1000 Hz
1,5/3/10/30/100/1000 Hz
Upper cut-off frequency
100/300/1000/5000/10000 Hz
100/300/1000/5000/10000 Hz
Settling time
2-4 s
2-4 s
Transverse direction factor
< 5%
< 5%
Constant current supply
2 .. 20mA
2 .. 20mA
Working point voltage at ICONST = 4 mA
12 .. 14 V
12 .. 14 V
Output impedance at ICONST = 4 mA
< 130 Ω
< 130 Ω
Working temperature range
-40 / 100 °C
-40 / 100 °C
Temp. coefficient of sensitivity
±0,015 %/K
±0,015 %/K
4 mA-Offsetdrift from Tmin to Tmax
± 4µA
± 4µA
Insulation resistance for 250 VDC
>4000 MΩ
>4000 MΩ
Dielectric strength
350 VDC
350 VDC
Degree of protection
IP 68
IP 68
Ground without cable
60g
60g
Case material
Stainless steel
Stainless steel
Cable connection
axial
axial
Socket
Binder 713 Flange bushing
Binder 713 Flange bushing
Mounting thread
M8 x 5,5
M8 x 5,5
Versions of the measuring and frequency ranges see table Version overview

Version overview RMS value evaluation

High pass H [Hz] Low pass L [Hz] Range R [m/s²] Type code KSI84AR-H-L-R Noise aN [m/s²]
1,5
100

300

1k
10
KSI84AR-1-L-10
0,005
20
KSI84AR-1-L-20
0,005
50
KSI84AR-1-L-50
0,007
100
KSI84AR-1-L-100
0,007
200
KSI84AR-1-L-200
0,008
500
KSI84AR-1-L-500
0,016
5k
10
KSI84AR-1-5k-10
0,02
20
KSI84AR-1-5k-20
0,02
50
KSI84AR-1-5k-50
0,03
100
KSI84AR-1-5k-100
0,06
200
KSI84AR-1-5k-200
0,08
500
KSI84AR-1-5k-500
0,16
10k
20
KSI84AR-1-10k-20
0,05
50
KSI84AR-1-10k-50
0,09
100
KSI84AR-1-10k-100
0,18
200
KSI84AR-1-10k-200
0,20
500
KSI84AR-1-10k-500
0,25
3

10

30

100 
100

300

1k
10
KSI84AR-H-L-10
0,005
20
KSI84AR-H-L-20
0,005
50
KSI84AR-H-L-50
0,007
100
KSI84AR-H-L-100
0,007
200
KSI84AR-H-L-200
0,008
500
KSI84AR-H-L-500
0,016
1k
10k
20
KSI84AR-1k-10k-20
0,05
50
KSI84AR-1k-10k-50
0,09
100
KSI84AR-1k-10k-100
0,18
200
KSI84AR-1k-10k-200
0,20
500
KSI84AR-1k-10k-500
0,25

 

Version overview peak value evaluation

High pass H [Hz] Low pass L [Hz] Range R [m/s²] Type code KSI84AP-H-L-R Noise aN [m/s²]
1,5 100

300

1k
10 KSI84AP-1-L-10 0,005
20 KSI84AP-1-L-20 0,005
50 KSI84AP-1-L-50 0,007
100 KSI84AP-1-L-100 0,007
200 KSI84AP-1-L-200 0,008
500 KSI84AP-1-L-500 0,016
5k 10 KSI84AP-1-5k-10 0,02
20 KSI84AP-1-5k-20 0,02
50 KSI84AP-1-5k-50 0,03
100 KSI84AP-1-5k-100 0,06
200 KSI84AP-1-5k-200 0,08
500 KSI84AP-1-5k-500 0,16
10k 50 KSI84AP-1-10k-50 0,09
100 KSI84AP-1-10k-100 0,18
200 KSI84AP-1-10k-200 0,20
500 KSI84AP-1-10k-500 0,25
3

10

30

100
100

300

1k
10 KSI84AP-H-L-10 0,005
20 KSI84AP-H-L-20 0,005
50 KSI84AP-H-L-50 0,007
100 KSI84AP-H-L-100 0,007
200 KSI84AP-H-L-200 0,008
500 KSI84AP-H-L-500 0,016
1k 10k 50 KSI84AP-1k-10k-50 0,09
100 KSI84AP-1k-10k-100 0,18
200 KSI84AP-1k-10k-200 0,20
500 KSI84AP-1k-10k-500 0,25

 

Connection / installation dimensions

Installation dimensions

Connection via thread:

  • M8 x 5,5mm
  • Width across flats 22mm
KS80D Maßzeichnung

Pin assignment

KSI Piezo Sensor Anschlussbelegung

Circuit diagram

KSI Piezo Sensor Schaltbild

Typical frequency responses

KSI Piezo Sensor Frequenzgang

Downloads

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