4-20ma Pressure transmitter

[Onepointbrewing]

I have a 24v 4-20ma Pressure transmitter connected to A3 but the raw measurements even with zero pressure fluctuate.
What is the best way of connecting this for maximum accuracy and stable numbers.
In ESPHome, this is mu code and the Zero Pressure fluctuates by 100


  - platform: adc
    pin: 6
    raw: true
    name: "F16 A3 Current"
    update_interval: 5s
    unit_of_measurement: mA
    attenuation: 0db
    samples: 100
    sampling_mode: avg