MultiTrode MultiSmart Installation & Operation Manual page 118

Toggle the parameter to: 100 - SourceX
This inverts the level. To invert the set points, navigate to:
14.8.8 Remote Level Sensor Configuration
The MultiSmart can receive levels from a remote level sensor such as a reservoir monitor.
Select Remote Level to assign a Remote Level Sensor to the level device chosen (Primary or Backup).
Press Save to confirm the change.
To remove a Remote Level Sensor from the system, press the Unassign button.
Configuring the Remote Level during the setup wizard (rather than subsequently via this screen) has the
advantage that the unit displays a number of questions related to DNP3 configuration and master/slave
addresses. See Section 9.1. The disadvantage of going through the Setup Wizard is that any configuration
already performed is overwritten.
14.8.9 Backup Level Devices & Failover
The MultiSmart can accept two level devices monitoring the same well - a primary and a backup level device
(section 14.8). Typically, the primary level device is an analog device (4-20mA) and the backup or secondary
level device is a MultiTrode probe. The probe is commonly used as a backup as it is highly reliable, while the
analog device has higher resolution and hence is commonly used as the primary level device.
The main operator screen (the home page) displays a flashing BACKUP indication in the level bar graph
whilst the unit is operating on a backup level device.
The failover or switch-over to the backup level device is based on the comparison of the level returned from
each device with predefined values or a window. There are two windows, a low and a high, and each has
two values associated with it. When both of the levels returned fall outside the window, one of two possible
faults is displayed.
The Primary Level High Range fault is displayed when the result of the comparison to the predefined high
window fails. Similarly, the Primary Level Low Range fault is displayed when the result of the comparison to
the predefined low window fails.
NOTE:
These faults only detect a fault within the specified window. For a full range comparison, see the
Analog Compare feature, 14.8.11.
How to setup the windows is explained in the following section. The faults associated with the backup probe
are automatically enabled when a backup probe is assigned.
The primary level device is restored as the primary level source when the comparison of the current levels to
the windows no longer fails.
Page 118 of 260
MultiSmart Installation & Operation Manual
and Toggle this to true.
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