CN0357 Board with biased gas sensor (NH3-B1)

Hello. I want to use the CN0357 board with the sensor NH3-B1. I use an Arduino to communicate with the CN0357. The fact is that, this sensor is really different from the CO-AX. The CO-AX is an unbiased sensor but the NH3-B1 require 200mV bias voltage. How can I use it with the CN0357? Thanks