Pulsar blackbox 134, Инструкция по эксплуатации

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Failsafe
P808 Fail-safe Mode
By default, if a fail-safe condition occurs, then the display is held at the last
known value until a valid reading is obtained.
If required, then you can change this so that the unit goes to high (100% of
span), or low (empty) as follows:
Option Description
1 = Known (Default) Remain at the last known value
2 = High Will fail to the high value (100% of Span).
3= Low Will fail to the low value (empty)
See Also P218 (RL1), P228 (RL2) - Relay Fail-safe.
P809 Fail-safe Time
In the event of a fail-safe condition the failsafe timer determines the time
before fail-safe mode is activated.
Default = 1min.
If the timer activates, the unit goes into fail-safe , as determined by P808
( Display ), and P218, 228 ( Relays) . When this happens, if the PC Handheld
Communicator or the optional Handheld Communicator, are connected to the
unit, or the optional on board display is fitted, you will see the message
“
Failed Safe
!” on the display, along with a message explaining why (lost
echo or transducer fault, for example).
When a valid measurement is obtained then the display and output will be
restored and the timer is reset.
Compensation Parameters
Offset
P851 Measurement Offset
The value of this parameter is added to the measured distance, in
Measurement Units ( P104 ).
This Offset will be added to the level, as derived from the transducer, and will
affect everything including the reading on any display in use, relay setpoints
and the output.