WS-5932 Accelerometer Calibration System

1. Overview

  

A sensor's frequency response and sensitivity is a very important technical indicator for a its designing and its vibration signal measurement. The system is designed for the calibration of the accelerometer's frequency response curve and sensitivity. The calibrating procedure is automatically controlled by a computer. The system is used to measure the frequency and amplitude of a standard reference accelerometer and the sensor to be calibrated. The sensor's frequency response curve and sensitivity is thus calibrated by comparison of the different measurements (the so-called back-to-back method).
The system can be used in research institutes, laboratories of vibration research, and for the design and production of sensors.

The system can also calibrate the sensitivity and frequency response curve of velocity sensors. Velocity sensors are widely used in petroleum exploration, machinery vibration monitoring in factories, etc.
2. Component
   • WS-5932 Control Instrument
• JZ-2A High Frequency Exciter or JZ-20C Low Frequency Exciter
• GF-20 Power amplifier
• DK8305 or BK8305 Standard Reference Accelerometer (optional)
• Computer (optional)
• Vib'SIN Software
3. Diagram
 
4. Functions
  • Sine wave sweep according to user-defined spectral line and amplitude
• Sine wave sweep according to equal interval spectral line and amplitude
• Draw frequency response curve in linear or Logarithmic Coordinates
5. Techincal Specification
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5.1 Control Instrument

Model: WS-5932 Control Instrument
Data Acquisition
1) USB computer interface. It is compatible with USB1.1 and USB2.0
2) 8 Channels A/D
3) Sweep sine frequency range from 0.1Hz to 50kHz
4) Frequency control accuracy 0.01Hz
5) Amplitude control accuracy 0.1%FS
6) Sine signal output
7) Maximum sample frequency 500kHz
8) Power supply 100V 240V(AC)
9) Dimension: 365×70×365mm

Charge Amplifier
1) LED display
2) No. of Channels : 2
3) Input range: 0.1pC to 50000pC for charge
4) Gain:6
5) Sensitivity conditioning: 3 digitals from 0.1 to 999
6) Accuracy: Acceleration: <=±0.5%
Velocity: <=±0.5%
Displacement: <=±2.0%
7) Frequency range: Acceleration: 0.3Hz 50kHz
Velocity: 1.0Hz 10kHz
Displacement: 1.0Hz 1kHz
8) Low-pass filter (Hz): Programable range from 1Hz 50kHz
Its attenuation slope: -80dB/Oct
9) Input voltage: ±10V
10) Input connector: Female 10-32NF connector
11) Overload indicator: When input signal is overloaded (greater than ±9.8V)
12) Inherent noise (converted to the input): <=5×10-3pC
13) Input resistance: 1012 Ohm
14) Output resistance: <1 Ohm
15) Input current: 15mA
16) Working temperature: -10 to 50°C
17) Humidity: 0 to 85%RH (non-condensing)

Power Amplifier
1) Maximum power: 30VA
2) Maximum current: 3A
3) Maximum output voltage: 10V
4) Frequency range: 10Hz to 20kHz
5) Output resistance: 6 Ohm
6) Distortion: <2%
7) Noise: 2mV

5.2 Exciter(2 Options)
 

Model: JZ-2A(High Frequency)
1) Frequency range: 60Hz to 30kHz
2) Maximum current: 2.5A
3) Maximum load: 110g

 

Model: JZ-20C (Low Frequency)
1) Freq. range: 0.1Hz 100.0Hz
2) Displacement: ±10mm
2) Maximum current: 10A
3) Maximum load: 500g

5.5 Standard Reference Accelerometer(2 Options)
  Model: BK8305
1) Producer: B&K(Denmark)
2) Standard: ISO 5374
3) Charge sensitivity: 1.25pC/g
4) Resonant frequency: 38kHz
5) Frequency range: 1 to 5000Hz
6) Maximum acceleration limits: 1000g (shock)
7) Weight: 40g
8) Temperature range: -101°F to 392°F (-74°C to 200°C)
9) Application: It is the standard reference accelerometer for the precise calibration of vibration transducer's sensitivity and frequency response curve.
Model: DK8305(Cheaper)
1) Charge sensitivity: 1.25pC/ g
2) Frequency range: 1 to 5000Hz
3) Resonant frequency: 35kHz
4) Maximum acceleration limits: 1000g
5) Weight: 45g
6) Temperature range: -4°F to 176°F (-20°C to 80°C)
7) Application: It is the standard reference accelerometer for the precise calibration of vibration transducer's sensitivity and frequency response curve. The cost of this accelerometer is much cheaper than BK8305
.
6. Calibrated Frequency Response Curve
 
Fig.6.1 Calibrated freq. response curve of accelerometer (freq. from 100 to 5000Hz)

Fig.6.2 Calibrated freq. response curve of accelerometer (freq. from 100 to 30000Hz)
7. System Accessories
  1 USB cable (1.5m)
1 Power cable (1.5m)
2 L5-BNC low noise cable (2m)
1 Standard suitcase
1 Operating Manual

For more information about the system, please contact sales@sensor.in