Model 11AL - Pneumatic Pressure Transmitter
On the Input Tag Dialog box, Tag Value line, click the 
button to open the advanced data dialog box, which displays:
ˇ Option Unit - drop-down list.
ˇ Range Limit and Span Limit.
č To enter the range:
1. Option Unit: Select "mmHg".
The Range Limit displays 0-70.
The Span Limit displays 10 to 40.
2. Minimum Value: Enter 10.
3. Maximum Value: Enter 20.
To comply with the span limit, you can enter any number between 20 and 50 for the Maximum Value (10 to 40 higher than the Minimum value).
č To enter the output signal
1. Option Unit: Select 3 to 15 psi
2. Click Ok