Oldham BM25, Руководство пользователя

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32 BM 25/25W
Instruction Manual
Mandatory parameters for inputs/outputs:
■
Voltages and alternating currents: I = 150 mA max. - U = 30 V max.
■
Voltages and direct currents: I = 150 mA max. - U = 30 V max.
If the gas monitor is used in an explosive atmosphere, it is imperative to
consider output relay parameters, since contact must not impair the
intrinsic safety of the gas monitor. These parameters are mentioned in the
paragraph
Special Instructions for use in explosive atmospheres on page
71. OLDHAM shall not, in any event, be liable for failure to follow
regulations.
Data transfer
The BM 25/25W stores gas measurements, alarm and fault events. Those data can
later be downloaded to a Personal Computer thanks to
COM 2100 software.
Stored data
Once turned on, the BM 25/25W records data in time-stamped frames. The monitor
creates a new frame every time it starts up and every 24 hours. A frame contains:
■
Channels Information
■
Readings for each sensor at a defined recording interval (configurable).
■
Event logs for each channel:
- Alarm
- Fault
- Alarm Reset
- Maintenance operations (programming, calibration, sensor replacement,
zeroing).
Memory capacity
The gas monitor can store approximately 200,000 measurement points. When the
memory is full, oldest data are overwritten (FIFO).
Data storage
Data are stored as long as internal battery is charged. If the BM 25/25W is not used for
a long period of time and/or main battery is discharged, a lithium battery will take over
for a period of two years max.