26
Reference Manual
00809-0100-4840, Rev CB
Section 4: Starting up
February 2015
Starting up
4.3 Programming the 3101 using the integral display
and buttons
Note
The Integral Display menu is shown in full in Appendix C: Integrated Display Menus.
4.3.1 Display units (on the 3101)
The display units are indicated by the position of the decimal point in the displayed PV value:
Units Display
m8.000
ft. 26.24
in. 314.9
Default values are as follows:
3101****SC**: m
3101****RC**: ft.
Note
See Figure C-1 on page 102 for a map of the programming menu structure showing how to
access all the menu options and return to the PV display.
To change the display units
1. Start from the PV display (see the note above).
2. Hold down the blue button
ï‚® for 10 seconds, but do not release it yet.
3. The display units will then change according to the following sequence:
3101****SC**: Metres to Feet, Feet to Inches, and Inches to Metres
3101****RC**: Feet to Inches, Inches to Metres, and Metres to Feet
4. Continue to hold down the blue button
ï‚® to change to the next display unit in the
above sequence after every three seconds.
5. Confirm the display units by releasing the blue button
ï‚®.
The same units must be used when programming in the bottom reference and the 4 and 20 mA
points. The 4–20 mA output may be set to operate over all or just a part of the total measuring
range. There is no limit on the minimum span of the current output, although a span below 4 in.
(100 mm) is not recommended. The 4 mA level may be set above or below the 20 mA level to
suit the monitoring or control equipment.
Note
The Rosemount 3101 measures and calculates in meters. The display units are derived as a last
operation using a pre-programmed conversion factor