Bar30 depth sensor with Arduino UNO

Bar30 sensor need i2c level converter to communicate with Arduino UNO since its 5v. Bar30 is 3.3v device. How to connect bar30 sensor with Arduino UNO using other methods.

Below is the link to the bar30 user guidelines with Arduino

A voltage level converter as suggested on the page that you linked to would seem to be the obvious and safest answer.

You could probably use a voltage divider (2 resistors) to reduce the voltage level of the SDA and SCL pins and use the Arduino directly to supply GND and 3.3V but a proper voltage converter is to be preferred