This manual provides the procedure for adjusting the Vapour Pressure range settings in the OVMS-50 alarm unit.

1. Adjusting the Measurement Range

Follow these steps to configure the Vapour Pressure range:

1. Access the Alarm Unit Settings

   • Press the "M" key on the alarm unit.
   • 

2. Select the Channel

   • Choose Channel 3 and press the Enter key until the channel setting menu appears.
   • 

3. Enter Password

   • Input the password: "0000" and confirm.

4. Modify the High Scale Setting

   • Use the Arrow button to navigate.
   • Set the High Scale value to 0.200.
   • 

5. Save and Exit

   • Press the "Go Back" button multiple times to return to the operating mode.

2. Final Verification

1. Confirm the High Scale setting is correctly applied.
2. Check the Vapour Pressure readings to ensure they are within the expected range.
3. If any issues persist, verify sensor connections and calibration settings.

3. Troubleshooting Notes

• If the alarm still shows incorrect values, check the sensor input signal.
• Ensure that all cable connections are properly secured.