X2 Sensor Detection

Traditionally, programming software is required to indicate the communication protocols, sensor addresses, measurement commands, data format, and power requirements of all sensors connected to an environmental data logger.

X2 data loggers are designed to simplify the programming and setup process for users by automatically scanning each of its sensor ports for sensors connected to the logger. This process works by running a series of scripts designed to check for the presence of and establish communication with an array of widely used sensors. When the detection process is completed, identified sensors are programmed into the X2’s configuration, posted on the WQData LIVE web datacenter, and assigned a default 10-minute sampling and transmission interval.

When Sensor Detections Occur

This X2 auto-detection process occurs:

  • Each time power is applied to the X2 until it has detected at least one non-diagnostic sensor
  • When the Detect Sensor command is sent to the logger through WQData LIVE
  • When the Run sensor detection command is sent to the X2 through the CONNECT software

Important Considerations

  • During detection, only those sensor scripts which are loaded onto the X2’s internal SD card and are enabled for operation will be processed.
  • Only one RS-232 sensor can be connected to a single port.
  • Multiple SDI-12 and RS-485 sensors can be applied to a single port; however, they must each have a unique address.
  • 12VDC power is required for most sensors to properly power and respond during the detection process.
    • If an X2 is powered solely by a USB communications cable, the 5V power may not be sufficient to complete the detection.
  • Any previously detected sensors that are physically disconnected from the X2 or are experiencing communication issues at the time a new detection is processed will not be identified. As a result, the X2 will also no longer attempt to record data from them.