FAURE HERMAN FH8500, Руководство пользователя

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Chapter 1: General overview
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two Reed-type contacts for alarms (for instance, an alarm
can be allocated to the velocity of sound in order to
indicate a product change in the pipe)
• RS485 serial link (or a Hart link using the analog output
n° 1
(1) ) allowing the data and parameters transmission to a
control-command system as well as the remote parameter
setting
Data logger and Event logger
The FH8500 includes two loggers: Data logger and Event logger.
The Data logger records in a non-volatile memory (1 024 available
records), with a storage period which can be chosen from 1 s to
24 h, some measurement data as the counting mode, the flow-rate
value, the velocity of flow (see in page 81 the complete list of
stored data).
Remark : The total recording duration depends on the selected period. The
table below gives the recording duration for several period values.
(1) The two modes of link are exclusive : either RS485-Modbus link or analog
output n° 1 - Hart link.
Recording period Total available recording duration
1 s
≈
17 mn
10 s
≈
2 h 50 mn
1 mn
≈
17 h
10 mn
≈
7 days and 2 h 25 mn
1 h
≈
42 days and 16 h
24 h
≈
2 years and 292 days