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“SmartCella manual” +0300084EN - rel. 1.2 - 28.03.2017

3.4.12 Minimum and maximum temperature

monitoring

The controller can record the minimum and maximum temperature

measured by the control probe over a period of up to 999 hours (more

than 41 days).

To enable monitoring:

• enter programming mode as explained in the corresponding

paragraph;

• set r5=1;

• select rt;

Press SET/DEF

This displays how long minimum and maximum temperature monitoring

has been active, (if recording has just been enabled, rt=0);

• to restart temperature recording, press AUX for more than 5 s

The message “rES” indicates that the log has been deleted. The controller

resets the total hours and restarts monitoring;

• press Set to return to the list of parameters;

• to display the maximum temperature measured by the probe, read the

value associated with parameter rH;

• to display the minimum temperature measured by the probe, read the

value associated with parameter rL.

Note: after the maximum time of 999 hours, minimum and

maximum temperature monitoring continues, while the time interval

remains ﬁ xed at 999.

Important: the values of parameters rt, rL and rH are saved to the

controller’s memory every hour. If the controller is not connected to an

uninterruptible power supply, a temporary blackout may mean the

values of rt, rL and rH measured in the last hour will be lost. When power

returns, the controller automatically restarts monitoring from the

previously saved values.

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