Baker Hughes Panametrics Sentinel LCT8, User Manual

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3.6.3.1 Understanding the alarm type selection
If normal or failsafe was selected as the alarm type , you must then program the parameters listed in Table 11 below.
Table 11: Alarm type options
Options Parameters Description
Level Units This defines the measured units monitored by the alarm
Trip point This defines the measured value required to trip the alarm
Dead band
This defines a range of values around the trip point which neither trip nor
reset the alarm.
Trip direction
The alarm may be set to trip either when the value drops below the trip point
(low alarm) or when the value moves above the trip point (high alarm).
Error level
Choose from the following options:
Reset - Forces the alarm to reset on an error or fault condition.
Trip - Forces the alarm to trip on an error or fault condition.
Hold last - Holds the current alarm status on an error or fault condition.
Direction Units
The alarm can be tripped on either forward or reverse flow, using volumetric
flow in m
3
/s of the selected channel. The alarm determines direction by
looking for a positive or negative change in the flow reading.
Fault Alarm units The alarm is set to trip based on the channel selected here.
Flow This trips the alarm when a flow error occurs on the selected channel.
Non-flow This trips the alarm when a non-flow error occurs on the selected channel.
All This trips the alarm on any error on the selected channel.
Custom The user can select the errors that should trip the alarm.
3.6.3.2 Configuring the alarm latch state
To configure the alarm latch state options, see Table 12 below.
Table 12: Latch state options
Option Description
Latch
This enables the alarm to hold its current state, by causing the user intervene indicator to be lit when
the alarm is tripped.
No Latch The alarm is reset when the fault or error condition clears.
Clear latch
This changes the latched state, by turning off the user intervene indicator when the fault or error
condition clears.
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