SBG3I Sensor Box

SBG3I Sensor Box

Model: SBG3I

Measurement Environment: Three Axis, 4~20mA output

Applications: Sensor box (124 x 80 x 58mm3) with three integrated SEIKA sensors and three integrated signal conditioners with 4...20mA output.

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This is just one example of the Seika accelerometers sensor boxes we have available at Sensors UK. Please contact us to discuss the wider options available.


  • robust pressure die cast aluminim housing (IP65) with saltwater proof coating
  • both output channels are electrically isolated from and independent of each other
  • twist free 4-point fastening of rigid, 3.2mm thick base PCB
  • EMC certified
  • three integrated signal conditioners with 4...20mA, 2-wire outputs
  • internal, highly stable sensor supply voltages
  • no separate supply voltage necessary
  • 10V ... 30V terminal voltage
  • all SEIKA sensors of the B-, BD- and Nseries fit the housing and can be installed in different directions of operation
  • programmable dynamic response
  • output signals calibrated to customer's specifications
  • high mechanical overload resistance
  • sensors and signal conditioners electrically isolated from housing
  • either connection polarity - possibility of 4- wire connection for both measuring loops
  • low pass filter with optional choice of cutoff frequency for suppression of interference frequencies


The SBG3I is a pressure die cast aluminium sensor housing (IP65) with two integrated sensors for measuring accelerations and/or inclinations along three axis acceleration and/or two axis inclination.

As well as the sensors, the box contains three independent signal conditioners, each with a 4...20mA, 2-wire output, and three separate, highly stable voltage supply feeding off the corresponding current loop, one for each sensor. Furthermore, each signal conditioner includes an active low pass filter, whose upper cut-off frequency / settling time can be adjusted to suit the measurement task, an output stage with current limitation, a noise voltage filter and a diode bridge for unipolar connection to the current loop. Interference signals caused by unwanted ground currents are eliminated by electrically isolating each sensor and signal conditioner from each other and the housing.

A special electronic temperature compensation system can significantly reduce the temperature sensitivity of the implemented sensors. The compact PG cable gland and compact housing size in combination with the 3- wire connection enable the use of this high quality measuring system in harsh operating conditions.


The SBG3I is suitable for applications requiring precise acceleration or inclination measurements along three axis under harsh circumstances and returning of a 4...20mA output signal each. Areas of successful implementation include construction, mining, agricultural machinery, transportation and conveyor systems, ships, operation and automation technology as well as general mechanical engineering.

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Call us now on: +44 (0)1727 85 93 73 to see how we can help