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Quick Installation Guide
00825-0100-4593, Rev BA
July 2009
Rosemount 1151
11
STEP 5 CONTINUED...
Configure LCD Display
Figure 4. Sample 1151 LCD Display
NOTE
The LCD display time-out is approximately 16 seconds. If keys are not pressed within this
period, the indicator reverts to reading the signal.
Position the Decimal Point and Select the Meter Function
1. Unscrew the retaining ring shown in Figure 4 and remove the LCD display cover.
2. Press the left and right configuration buttons simultaneously and release immediately.
3. To move the decimal point to the desired location, press the left configuration button.
Note that the decimal point wraps around.
4. To scroll through the mode options, press the right configuration button until the desired
mode is displayed (see Table 2).
5. Press both configuration buttons simultaneously for two seconds.
6. Replace the LCD Display cover.
Table 2. LCD Display Modes
NOTE
The meter displays “----” for approximately 7.5 seconds while the information is being
stored.
Options Relationship between Input Signal and Digital Display
L in Linear
L in F Linear with five-second filter
Srt Square root
SrtF Square root with five-second filter
Square root function: relates to the digital display. The bar graph output
remains linear with the current signal.
Square root response: digital display will be proportional to the square root of
the input current where 4 mA=0 and 20 mA=1.0, scaled per the calibration
procedure. The transition point from linear to square root is at 25% of full scale
flow.
Filter response: operates upon “present input” and “input received in the
previous five second interval” in the following manner:
Display = (0.75 x previous input) + (0.25 x present input)
This relationship is maintained provided that the previous reading minus the
present reading is less than 25% of full scale.
Retaining Ring
Right
Configuration
Button
Left
Configuration
Button
Digital Bar Graph
4593_Rev_BA.fm Page 11 Friday, August 7, 2009 3:38 PM