Copyright © 2022 Comark Instruments
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What is self-heating?
Radio rates of less than five minutes can cause internal self-heating of the transmitter, which
will result in a slight heating effect on the integral sensor. This can result in the internal
temperature sensor recording ambient temperatures approximately 1°C greater than actual.
We therefore recommend that the integral sensor be switched off if the transmitter is required
to operate with a radio rate of less than five minutes. An external air probe should be used to
measure the local ambient temperature instead. The internal warming of the transmitter does
not impact the other external temperature channels and accuracy of the transmitter is equally
not affected.
NOTE
– Extensive use of Setup (or AP) Mode, which puts the WiFi module into an ‘always on’
state, can also result in temporary heating of the inside of the transmitter, which can also
increase the temperature of the integral sensor. This effect is temporary, and the temperature
will reduce very quickly after Setup (AP) Mode is deactivated.
What happens when the battery goes flat?
As the batteries go flat on a Diligence 600 transmitter, warnings are provided via normal
communications in the Diligence Cloud. If setup, an email notification about the low battery
can also be sent. There are three stages of low battery event:
1. Low Battery - The transmitter will indicate low battery by showing the Low Battery Indicator
icon on the display. During this phase the transmitter will operate normally.
2. Dead Battery - The transmitter will indicate a dead battery warning by flashing the Low
Battery Indicator icon and, if programmed, emails will be sent. During this phase the
transmitter will continue to log data, but WiFi will be deactivated. Please replace the batteries
as soon as possible.
3. Battery Exhausted - The transmitter will shut down and stop logging. The display will show
StOP. Batteries must be replaced to continue normal operation.
When fresh batteries are installed data logging will resume and any unsent data and alarms
will be sent to the Diligence Cloud. Batteries should always be replaced as a set and discarded
batteries should be recycled in accordance with local regulations.
If the transmitter is mains powered please remove this first and allow the transmitter to
completely power down before re-fitting fresh batteries. Do not leave dead batteries in
transmitters for extended periods as they can leak and damage your transmitter.
Will I still get my data if the Internet goes down?
Yes. The transmitters will continue to store data and alarms locally for many weeks and
months before the memory starts to wrap around.
