Emerson Rosemount 3100 Series - Setting Spike Rejection (the 3102;3105)

Reference Manual
00809-0100-4840, Rev. BA
July 2008
5-11
Rosemount 3100 Series
To change the valid echo count:
a) After entering the “Eng” menu (see the note above), press the green
button
↓ repeatedly until “Stir” is indicated.
b) Press the blue button
→ to enter the stirrer (“Stir”) menu.
The display indicates the present valid echo count.
c) If the value indicated is correct, press the red button
↵ to exit to the menu.
(The menu option “Stir” re-appears”. Press
↓ to get to the next menu.)
d) Press the blue button
→ to start the editing mode. The valid echo count
flashes to indicate it can be edited.
e) Press the green button
↓ repeatedly to scroll through the options available
(1 to 100).
f) Press the blue button
→ to confirm the new setting. (The flashing stops.)
g) If the new setting is correct, press the red button
↵ to save. The display
changes to the next menu option.
h) If the new setting is incorrect, press the blue button
→ to exit to the menu.
The “Stir” re-appears; re-start at step (b) or press
↓ for the next menu.
Setting Spike Rejection
(The 3102/3105)
Screen display: SPi
Factory default value: 0 (disabled)
In applications with high levels of acoustic or electrical noise, a spike could
incorrectly trigger the echo detection system. The value of SPi can be
increased (0 to 100) and has the effect of rejecting spikes. Several different
values may have to be tried to determine the best option.
NOTE:
This menu option is in the engineering menu “Eng”. See “Accessing the
Engineering Menu (The 3102/3105)” on page 5-6 or see Figure C-4 on
page C-5 for a map of the menu structure.
To change the spike rejection:
a) After entering the “Eng” menu (see the note above), press the green
button
↓ repeatedly until “SPi” is indicated.
b) Press the blue button
→ to enter the spike rejection menu. The display
indicates the present SPi value
c) If this SPi is correct, press the red button
↵ to exit to the main menu.
(The menu option “SPi” re-appears”. Press
↓ to get to the next menu.)
d) Press the blue button
→ to start the editing mode. The SPi flashes to
indicate it can be edited.
e) Press the green button
↓ repeatedly to scroll through the options available
(1 to 100).
f) Press the blue button
→ to confirm the new setting. (The flashing stops.)
g) If the new setting is correct, press the red button
↵ to save. The display
changes to the next menu option.
h) If the new setting is incorrect, press the blue button
→ to exit to the menu.
The menu “SPi” re-appears; re-start at step (b) or press
↓ for next menu.