Chapter 1 Precautions in Usage
12
With the settings in Table 1.2, the safety devices will trip in the
succession shown in Fig. 1.2 as temperature inside the cabinet rises
beyond the target temperature. The first to trip will be the upper deviation
limit alarm, followed by the absolute high limit alarm and then the
overheat protector. Because the cabinet is equipped with multiple safety
devices, abnormal temperatures cannot escape detection even if one of
the devices is not working.
60
70
75
80
Abnormal temperature detected here.
(If
①
and
②
are not working)
Time
Cabinet temperature(°C)
Abnormal temperature
detected here. (If
①
is
not working)
Abnormal
temperature
detected here.
Target temperature
③
Overheat protector
②
Absolute high limit
temperature alarm
①
Upper deviation limit
temperature alarm
Alarm cleared here.
Fig. 1.2 Temperature alarm trigger conditions
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