20
Data Logging
Triple Plus+ and Triple Plus+ IR
V. Data Logging
The data logging aspect of the instrument can be configured to be active when
the instrument is switched on by the START menu option. Additionally, the
instrument records events (such as alarms) and an event will cause the logger
to be switched on.
Data is logged for all gas channels at a rate set by the log period, which is con-
figurable via
Portables PC software
.
For each channel, the maximum level (mini-
mum in the case of oxygen) is recorded since the last reading was taken and
stored in the log. Thus, even if the log period is set to 10 minutes (for example)
and a brief gas hazard occurs, it will not be missed by the logger. Logged data
is retained in battery-backed memory when the instrument is turned off. When
the memory is filled, the new data over-writes the oldest.
A log is extracted from the instrument and saved as a file on the computer
via the
Portables PC software
LogManager is then used to inspect the log. See
the separate documentation for these two pieces of software for additional
details.
The instrument notes the following events in the log along with a note of the
channel the event is associated with (if appropriate):
Log switched on – either from front panel or by event trigger
Log switch off – either front panel or by instrument switch off
Sensor channel overrange
Instantaneous alarm 1
Instantaneous alarm 2
Instantaneous alarm 3
Short term exposure alarm
Long term exposure alarm
User triggered event (from the instrument front panel)
Change of user (from the front panel)
Change of site (from the front panel)
The instrument is capable of storing just over 6300 data logs for all channels.
Events take the space of 2 logs.
