ZJK4(ICP), ZJK8(ICP)

Low noise 4- or 8-channel signalconditioner-amplifier unit for ICP-Sensors

The ZJK(ICP) series is an extremly low noise signalconditioner, serve to provide sensor excitation power and prepare measurement signals of dynamic ICP® -sensors (acceleration, force, pressure and torque) for readout, recording or analysis purposes for data loggers, recorders and computer based data acquisition systems with on traditional voltage inputs. (ICP is a registered trademark of PCB: piezoelectric sensor with integrated charge amplifier) The conditioner is mainly developed for laboratory and free field measurements claiming very low noise level. As power supply can be used the delivered external 230V AC adapter or - based on the very low power consumption - two 12 V battery. Thanks to its modular structure the desk style instrument can produced as half-sized configuration with 3 or 4 channels, or as full-sized configuration with maximum 8 channels.

The ZJK(ICP) unit can work with all kinds of ICP® -senors with any sensitivity, supplying constant current power for each connected sensor. The signal amplify gain can switched in 3 steps (standard: 1x, 10x, 100x - other gains can be ordered between 1x and 100x) at each channel. If needed, different gain steps can be ordered for each channel. The sensors signal will be amplified an band-filtered (0,2 Hz ... 10 kHz), the outgoing AC-signal has no any DC-offset. All channels are totaly separated from each other.

Product details

ZJK4(ICP) - 3 or 4 channel unit

  • 3 or 4 analog channel for one ICP® -senor at each (with BNC input) with 4-10 mA constant current sensor excitation (other current values can be ordered)
  • switchable signal amplify gain (3 steps) for each channel
  • analog output (at each channel, BNC): 5 V AC peak-to-peak
  • power supply: +12VDC (max.250mA) and -12VDC (max.125mA) (external 230 V AC power supply unit can be ordered)
  • desk style case made from ABS outside dimensions: 122 x 122 x 198 mm

Technical specification for all configurations (standard)

  • total frequency range: 0,1 Hz....12.000 Hz
  • filter type: 8-th Butterworth
  • filter frequency range (-3 dB): 0,2 Hz ... 10.600 Hz
  • gain: 0 dB, 20 dB, 40 dB (1x, 10x, 100x) (option: 3 different gains for each chatorna between 1x and 100x)
  • noise level - for 1kHz sinus signal - measured at the output
                gain = 1x: 0,2 mVeff
                gain = 10x: 0,6 mVeff
                gain = 100x: 1,4 mVeff
  • signal distorsion: < 0,1% (at 1kHz, with 20 dB gain)
  • operational temperature range:  -10...+50 °C
  • industrial standard:  IP40

ZJK8(ICP) - max. 8 channel unit

  • max. 8 analog channel for one ICP® -senor at each (with BNC input) with 4-10 mA constant current sensor excitation (other current values can be ordered)
  • switchable signal amplify gain (3 steps) for each channel
  • analog output (at each channel, BNC): 5 V AC peak-to-peak
  • power supply: +12VDC (max.250mA) and -12VDC (max.125mA) (external 230 V AC power supply unit can be ordered)
  • desk style case made from ABS outside dimensions: 224 x 122 x 198 mm