Emerson Rosemount 3095, Справочное руководство, Страница: 110 / 130

Reference Manual
00809-0100-4716, Rev JA
May 2008
Rosemount 3095 MultiVariable
5-4
Sensor Limits
Table A-3 on page A-21 identifies sensor limits for Rosemount 3095
transmitters with serial numbers less than 40,000.
Table 5-5. Rosemount 3095 Flow Exceptions.
LCD Display
EA Display
(Diagnostics, Error Info)
Flow Calculation Affects
(1)
Flow Analog
Output
Flow
Digital
Output C’ ( )
0.5
no display
(2)
“AP/GP is above UOL” UOL
no display
(2)
“AP/GP is below LOL” LOL
no display
(2)
“PT is above UOL” UOL
no display
(2)
“PT is below LOL” LOL
no display
(2)
“Flow math error” Math Error Math Error Saturate in
direction of
alarm jumper
NAN
(3)
no display
(2)
“–2 inH
2
0 < DP < low-flow cutoff”
(4)
Unreliable flow
output
Unreliable flow
output 0
no display
(2)
“DP < –2 inH
2
0” Unreliable flow
output
Unreliable flow
output
Saturate Low
(5)
zero
(1) Only the parameter causing the exception is clipped at the operating or sensor limits. The other calculation inputs are not affected.
(2) The LCD has no display for this error. It continues with normal unit display during this error condition.
(3) NAN indicates “Not a Number.” Distributed Control Systems and HART masters will read “7F A0 00 00h.”
(4) Default and minimum low-flow cutoff value = 0.02 inH
2
O.
(5) Saturate low if direct acting (URV>LRV), Saturate high if reverse acting (URV<LRV).