Programming the Water Level Temperature Sensor (WLTS)

  1. Start the WLTS Utility.
  2. Select the appropriate Com Port for the connected WLTS from the drop-down menu.
  3. Click the 'Retrieve Settings' icon. This will retrieve and display the current programmed settings for the connected WLTS, as well as the serial number, firmware version, and model.
  4. You can now customize the WLTS protocol and measurement parameter settings. Select MODBUS or SDI-12 from the Interface drop-down.
  5. MODBUS settings options include: Address (set between 1 and 247), Baud Rate, Parity and Stop Bits.


    Without setting a specific address or Baud rate, the WLTS will power up with a default MODBUS device address of 1, Baud rate of 19,200, even parity and 1 stop bit).

    SDI-12 settings include the Address (The address can be customized to any value from "0" to "9", "A" to "Z", or "a" to "z", giving a total of 62 unique addresses).
  6. Note:

    Without setting a specific address, the WLTS will power up with a default SDI-12 device address of 0. The communication settings for the WLTS comply with the SDI-12 standard at 1200 baud, 1 start bit, 7 data bits, 1 parity bit (even parity), and 1 stop bit.

  7. For both protocols, set the units that the WLTS will be measuring in for the Level and Temperature Channels. When finished, click Upload Settings To Sensor.
  8. Note:

    You can also perform a "Field Zero" in air for the vented sensors.


    See the 301 WLTS User Guide for your specific communication protocol (MODBUS, SDI-12) for full definitions of the available commands.

    water level temperature sensor wlts pc software utility diagnostic information

    Water Level Temperature Sensor WLTS PC Software Utility - Diagnostic Information


  9. To test that the Sensor is reading correctly before connecting it to the Communication/ Vented Cable for deployment, you can click the Real Time Reading Verification icon to obtain real-time readings from the Sensor.
  10. If further Diagnostic Information is required, click the Diagnostics icon to perform a series of tests (Memory and Sensor) and obtain Level and Temperature information that may be helpful when troubleshooting any issues.