NEW BRUNSWICK SCIENTIFIC Innova CO-170, Manual To Operations

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New Brunswick Scientific User’s Guide
The capacity is 99 events, after which the earliest event is overwritten and a
later event is added.
The date and time of each event are also recorded, as shown in Figure 9:
Figure 9: ALARM EVENTS Screen
To scroll the screen back, press the T direction key. Press S to go
back to the first screen.
3.7.2
TEMPERATURE GRAPH
+
DOOR OPEN BAR CHART
When you select this from the
DATALOGGER
screen, the Door Open bar
chart is shows at the top of the screen to associate it with a temperature
disturbance (
note the correlation in Figure 10 below ). A temperature
reading is recorded every 18 seconds while the temperature is outside the
specification of
±
0.1
°
C and each reading is shown as a single pixel.
When the temperature has settled within specification, the recording is
compressed to one pixel representing
ten 18-second readings (as long as the
temperature remains in specification). This allows up to ten hours of
readings to be displayed on one screen. When the temperature moves
outside specification, for instance if the door is opened, the graph reverts to
individual 18-second readings until temperature is within specification
again.
When the data is compressed or decompressed, a light dotted line is
displayed vertically on the screen to signify that the time axis is changing
from 15-minute to 2½-hour increments or vice versa.
A heavy dotted line is
displayed when the unit is switched on.