Signal conditioner with CAN Bus

2 Channel intelligent signal conditioner (strain gauge amplifier) with CAN bus


The A2C-SG2 is a signal conditioner / strain gauge amplifier that measures mV inputs. It is the successor to the popular A2C-SG improving upon the design. The A2C-SG2 offer complete IP67 ratings on all connectors. It can be used to interface strain gauge bridges or load cells directly. 2 channels are available to simultaneously measure the two inputs. A new special high speed mode is available for a single channel measurement with a data rate of 4800 samples per second. The sensor communicates the measurement to a host via CAN Bus, using a standard M12 connector which is also used in J1939 networks. The A2C-SG2 contains a high performance 24bit analogue to digital converter and a high performance DSP processor. It can be programmed / calibrated to output any kind of unit. Raw ADC values are also available. Alarms can be programmed to trigger when a given threshold limit is passed.


By using a high performance DSP this is more than a simple strain gauge amplifierEach channel can be calibrated to a preferred unit of measurement. For a load cell this could be kg / tonnes / kN or any other value. For a strain measurement this could be micro strain or MPa. These measurements can then be requested as

  • Normal value
  • RMS value
  • Minimum value since last reset or last data request
  • Maximum value since last reset or last data request
  • Programmable data rate from mHz to 4800Hz
  • Programmable alarms for both channels
  • Heartbeat CAN messages with programmable periods
  • Periodic CAN messages with programmable data and time periods
  • Logic alarm output for standalone mode without the use of CAN bus (request special version)
  • Low power consumption
  • Durable aluminum / stainless steel housings
  • Software upgradable via CAN bus


Structural analysis of equipment / machines

  • Bending moment in structural members
  • Torsion in structural members
  • Eigen frequency of structural members
  • Load cells measurements
  • laboratory strain analysis
  • Wind turbine blades strain measurements

Datasheets and Synopsis



  • A2C-SG2-M12-S

    2 Channels strain gauge amplifier with CAN-Bus. Stainless steel enclosure, IP67. Max data rate 4kHz
  • A2C-SG2-M12 strain gauge amplifier to CANBus M12 Female
    A2C-SG2-M12 strain gauge amplifier to CANBus M12 Female


    2 Channels strain gauge amplifier with CAN-Bus. Aluminum enclosure, IP67. Max data rate 4kHz





SimplicityUse the U2C programmer

No prior knowledge of CAN bus communication is required! You can check the U2C programmer and software here:

Program using U2C

Connect the U2C to your PC after installing the drivers and software. Connect the A2CTRI to the U2C and apply power.

Use free software

Using the free software, set the mode of operation and the alarm thresholds. View real time data from the sensor and have it shown graphically.


Install the sensor in its application and verify that everything works as it should. It is still possible to connect the U2C and log the real world data, which can be used for analysis.