CiDRA SONARtrac PW VF-100 - Manual (Page 159)

20834-01 Rev 04 Page 8-15
8.3.4 Alarm Warn Threshold and Alarm Crit Threshold
These menu selections are used to set the flow rate and gas volume
fraction alarm set points. All other parameters must be set using the
Configure menu options in the passive sonar meter software utilities or
by a configuration file change using the USB Port.
The following table lists the alarm parameters with their default values.
Alarm Parameter Condition
User
Entry
Warning
Default Value
Critical
Default Value
Band Temperature
TMP> Y > 80 °C > 90 °C
TMP< Y < 0 °C < 0 °C
RMS Sound Pressure
Level
SPL> Y > 200 dB > 200 dB
SPL< Y < 50 dB < 80 dB
Volumetric Flow Quality VFQ< Y < 0.3 < 0.2
Speed Of Sound Quality SSQ< Y < 0.03 < 0.01
Event log updated LOG N
Sensor overload OVL N
Volumetric Flow or True
Liquid Flow
FLW> Y > 30 ft/s > 30 ft/s
FLW< Y < 3.2 ft/s < 3 ft/s
Gas Volume Fraction
GVF> Y > 100 % > 100%
GVF< Y < 0% < 0%
Sensor Failure FAIL N
Table 2 Alarm Triggers
Note: The alarm trigger for Flow (VF or TLF) and Gas Volume Fraction
(GVF) can be set from the transmitter menu. All other values must be
set using passive sonar meter software utility or by configuration file
change through the USB Port.
Up to three alarm triggers can be selected. For example, an alarm
output may be programmed like this:
Warning = TMP I LOG I VF
(Warning = Band Temperature or Event Log Updated or VF)
Critical = FAIL I OVL & LOG
(Critical = Sensor Fail or Sensor Overload and Event Log Updated