2.2 Programming the Water Level Temperature Sensor

solinst water level temperature sensor software utility

Figure 2-3 Water Level Temperature Sensor Software Utility


With the Sensor connected to the PC with the USB-A Programming Cable and the WLTS Utility started, select the appropriate Com Port for the connected WLTS from the drop-down menu.

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.



The Model number (e.g. M5) refers to the maximum depth of submergence in meters below water, for that device. The 'A' indicates an absolute sensor, while a 'V' indicates a vented sensor.


You can now customize the WLTS protocol and measurement parameter settings. Select MODBUS from the Interface drop-down.

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.


Set the units that the WLTS will be measuring in for the Level and Temperature Channels. For vented sensors, you can also perform a "Vented Sensor Zero" in air. Click Zero, you will receive a confirmation that the sensor has been zeroed. Click OK.

The parameters that were changed will be indicated by a blue highlight. When finished, click Upload Settings To Sensor. You will receive a confirmation message that the settings were uploaded. Click OK.


solinst water level temperature sensor modbus settings for absolute and vented communication cables

Figure 2-4 MODBUS Settings – Absolute and Vented


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.

If further Diagnostic Information is required, click the 'WLTS Diagnostics Information' icon to perform a series of tests (Memory and Sensor) and obtain Level and Temperature information that may be helpful when troubleshooting any issues. Take a screenshot of this information to share for troubleshooting support.


solinst water level temperature sensor diagnostic information

Figure 2-5 Water Level Temperature Sensor Diagnostic Information