Model 2000 Flow Computer Instruction Manual
2.0
GENERAL
DESCRIPTION
Model 2000 issue 21
Page No
49
2.6.1.6.
STATION ACCOUNTABLE ALARMS
If the Model 2000 is set-up for use with Station Pressure or Temperature inputs then the following alarm types can also
occur:-
1)
Station Pressure is above the values of S.prN max.
2)
Station Pressure is below the values of S.prN min.
3)
There is no value for Station pressure S.prN val.
4)
A comms failure has occurred between the Model 2000 and Station pressure sensor S.prN hart.
5)
Station Pressure sensor has a sensor generated alarm condition S.prN hsts.
6)
The selected Station pressure units do not match the units indicated by Station pressure sensor S.prN
unit.
7)
Station Temperature is above the value of S.teN max.
8)
Station Temperature is below the value of S.teN min.
9)
There is no value for Station temperature S.teN val.
10)
A comms failure has occurred between the Model 2000 and Station temperature sensor S.teN hart.
11)
Station Temperature sensor has a sensor generated alarm condition S.teN hsts.
12)
The selected station temperature units do not match the units indicated by Station temperature
sensor S.teN unit.
13)
Temperature sensor 1 value is outside the deviation limit te1.N dev.
NOTE In all cases above 1) to 13) the character N could be 1 or 2 depending upon the number of selected Station
transmitters.
14)
Station Controller Read of flow computer 1-5 failed.
15)
Station Controller Write to flow computer 1-5 failed.
16)
Station totals could not be calculated.
17)
Station Controller Vb Comparison Alarm
18)
Station Controller Vn Comparison Alarm
2.6.1.7.
SMART INDEX ACCOUNTABLE ALARMS
1)
Smart Index is not communicating.
2)
Smart Index is sending invalid communication packets.
2.6.1.8.
CORIOLIS METER ACCOUNTABLE ALARMS
1)
Density Value received from Coriolis meter is above Density max. limit.
2)
Density Value received from Coriolis meter is below Density min. limit.
3)
Communication port used for Coriolis meter set up problem.
4)
Communication failure or problem between FC2000 and Coriolis meter.
5)
Units read from Coriolis meter different from those set in FC2000.
6)
Coriolis Meter Status alarm.
2.6.1.9.
GRAB SAMPLER ACCOUNTABLE ALARMS
1)
Grab Sampler Can Full Alarm.
2)
An attempt has been made to Reset the Grab Sampler whilst operating.
3)
Grab Sampler Over speed alarm. (Number of grabs per mass unit (at current flowrate) > max sampler
speed)
2.6.2.
NON-ACCOUNTABLE ALARMS
Indication of a Non–accountable alarm is given by the illumination of the non-accountable alarm LED on the front panel and
by showing the alarm identification and time on the alarm pages of the LCD display.
2.6.2.1.
GENERAL NON ACCOUNTABLE ALARMS
A non-accountable alarm will be indicated when any of the following conditions occur:-
1)
The uncorrected flow rate is below the value of lo q.
2)
The pressure used is above the values of prN high.
3)
The pressure used is below the values of prN low.
4)
The temperature used is above the values of teN high.
5)
The temperature used is below the values of teN low.
6)
The Station pressure used is above the values of S.prN high.
7)
The Station pressure used is below the values of S.prN low.
8)
The Station temperature used is above the values of S.teN high.
9)
The Station temperature used is below the values of S.teN low.
10)
The gas chromatograph is in a Cal or Idle state.
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