3500/42 Operation and Maintenance
Configuration Information
65
Velocity Channel Options Screen for Channel B
Alarm Mode
Latching
Once an alarm is active it will remain active even after the proportional value
is no longer in alarm. The alarm state will continue until the channel is reset.
See Page 46.
Nonlatching
When an alarm is active, it will go inactive as soon as the proportional value
is no longer in alarm.
Alert is the first level alarm that occurs when the transducer signal level
exceeds the selected value. Danger is the second level alarm that occurs
when the transducer signal level exceeds the selected value. The Alert and
Danger values are set on the Setpoint screen.
Barriers
For Seismoprobes, select the MTL 764(-) Zener External option if external safety
barriers are connected between the monitor and the transducer. For Velomitor,
select the MTL 787(-) Zener External option if external safety barriers are being
used. If using an Internal Barrier I/O Module for Velomitor, select the internal
option. These devices are used to restrict the amount of energy that can flow
into a hazardous area.
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