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
.png "KSI Piezo Sensoren (1)")
Technical data
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KSI84-AR
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KSI84-AP
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Measured variable
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Effective value acceleration
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Peak acceleration
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Measuring principle
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Piezo, Shear principle
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Piezo, Shear principle
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Output
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4 ... 20mA
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4 ... 20mA
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Supply voltage
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10 ... 30VDC
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10...30VDC
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Nominal measuring range
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10/20/50/100/200/500 mV/g ±2%
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10/20/50/100/200/500 mV/g ±2%
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Linear measuring range amin/amax
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2 ... 112,5 %
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2 ... 112,5 %
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Fracture acceleration
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5000g
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5000g
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Linear frequency response f5%
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0,4 ... 13000 Hz
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0,4 ... 13000 Hz
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Lower cut-off frequency
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1,5/3/10/30/100/1000 Hz
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1,5/3/10/30/100/1000 Hz
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Upper cut-off frequency
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100/300/1000/5000/10000 Hz
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100/300/1000/5000/10000 Hz
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Settling time
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2-4 s
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2-4 s
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Transverse direction factor
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< 5%
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< 5%
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Constant current supply
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2 .. 20mA
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2 .. 20mA
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Working point voltage at ICONST = 4 mA
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12 .. 14 V
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12 .. 14 V
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Output impedance at ICONST = 4 mA
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< 130 Ω
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< 130 Ω
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Working temperature range
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-40 / 100 °C
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-40 / 100 °C
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Temp. coefficient of sensitivity
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±0,015 %/K
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±0,015 %/K
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4 mA-Offsetdrift from Tmin to Tmax
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± 4µA
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± 4µA
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Insulation resistance for 250 VDC
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>4000 MΩ
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>4000 MΩ
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Dielectric strength
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350 VDC
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350 VDC
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Degree of protection
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IP 68
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IP 68
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Ground without cable
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60g
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60g
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Case material
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Stainless steel
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Stainless steel
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Cable connection
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axial
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axial
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Socket
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Binder 713 Flange bushing
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Binder 713 Flange bushing
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Mounting thread
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M8 x 5,5
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M8 x 5,5
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Versions of the measuring and frequency ranges see table Version overview
Do you have further technical questions about the product?
We will be happy to help you determine the order code and provide you with further specific information for your required product.
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] |
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1,5
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100
300 1k |
10
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KSI84AR-1-L-10
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0,005
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20
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KSI84AR-1-L-20
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0,005
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50
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KSI84AR-1-L-50
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0,007
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100
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KSI84AR-1-L-100
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0,007
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200
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KSI84AR-1-L-200
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0,008
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500
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KSI84AR-1-L-500
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0,016
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5k
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10
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KSI84AR-1-5k-10
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0,02
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20
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KSI84AR-1-5k-20
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0,02
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50
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KSI84AR-1-5k-50
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0,03
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100
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KSI84AR-1-5k-100
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0,06
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200
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KSI84AR-1-5k-200
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0,08
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500
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KSI84AR-1-5k-500
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0,16
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10k
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20
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KSI84AR-1-10k-20
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0,05
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50
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KSI84AR-1-10k-50
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0,09
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100
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KSI84AR-1-10k-100
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0,18
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200
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KSI84AR-1-10k-200
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0,20
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500
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KSI84AR-1-10k-500
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0,25
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3
10 30 100 |
100
300 1k |
10
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KSI84AR-H-L-10
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0,005
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20
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KSI84AR-H-L-20
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0,005
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50
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KSI84AR-H-L-50
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0,007
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100
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KSI84AR-H-L-100
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0,007
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200
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KSI84AR-H-L-200
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0,008
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500
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KSI84AR-H-L-500
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0,016
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1k
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10k
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20
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KSI84AR-1k-10k-20
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0,05
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50
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KSI84AR-1k-10k-50
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0,09
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100
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KSI84AR-1k-10k-100
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0,18
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200
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KSI84AR-1k-10k-200
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0,20
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500
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KSI84AR-1k-10k-500
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0,25
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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
Pin assignment
Circuit diagram
Typical frequency responses
Data sheet