Pulsar Measurement Ultra 3, Инструкция по эксплуатации

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PULSAR MEASUREMENT
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Failsafe
P808 Failsafe Mode
By default, if a fail-safe condition occurs, then the display, relays and the mA
output are held at their last
known values 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 its last known value
2 = High Will fail to the high value (100% span)
3 = Low Will fail to the low value (empty)
See Also P218, P228, P238, P248, P258, 268 - Relay Fail-safe and P840 mA Output Fail-
safe
P809 Failsafe Time
In the event of a failsafe condition the failsafe timer determines the time
before failsafe mode is activated.
Default = 2mins
If the timer activates, the unit goes into failsafe , as determined by P808
( Display ), P218, 228, 238, 248, 258, 268 ( Relays ) and P840 ( mA Output ).
When this happens, 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, relays and mA
output will be restored, and the timer is reset.
Important Notice
In the event of a fail-safe condition occurring, the display, relays and mA
Output can be configured to fail to a condition which is independent of each
other. To set independent Relay Failsafe see P218, 228, 238, 248, 258, 268.
And for independent mA Output Failsafe see P840.