Each alarm trigger condition consists of a threshold temperature
value, an activation type (which can be instant, consecutive or
accumulative3) and a delay time, if it is not an instant alarm.
If an alarm trigger condition requires readings to exceed an upper
threshold temperature it is called an upper alarm. If an alarm trigger
condition requires readings to go below lower thresholds it is called a
lower alarm.
An alarm event is generated, when either of the entered alarm
conditions is triggered.
The USRIC-8 has a primary upper and a primary lower alarm.
The USRIC-8M allows four freely configurable alarms in addition to
the primary upper and lower alarms.
Primary upper alarm range
Upper threshold Alarm 4
Upper threshold Alarm 5
Upper threshold Alarm 6
Primary lower threshold
Primary upper threshold
Lower threshold Alarm 3
Primary lower alarm range
Alarm range 4
Alarm range 3
Alarm range 5
Non-alarm range
Temperature
Alarm range 6
Figure 3: Alarm ranges and thresholds example
Figure 4: Representation in LogTag® Analyzer
You need to observe some basic rules when entering alarm conditions
into the configuration screen in LogTag® Analyzer:
lA primary upper alarm must be entered before more upper alarms
can be entered.
lA primary lower alarm must be entered before more lower alarms
can be entered.
lAny additional upper alarms must have higher threshold values
than any previously entered alarm.
lAny additional lower alarms must have lower threshold values
than any previously entered alarm.
lYou can enter a different number of upper and lower conditions,
or only upper, or only lower conditions, or none at all. You can,
however, not make all alarms upper alarms, and you cannot make
all alarms lower alarms either.
lThreshold values for adjacent alarms can be equal and combined
with different alarm types and delay time values. For example,
you can enter a primary upper alarm with an 8°C threshold and
10 accumulative readings, plus an alarm with an 8°C threshold
and 5 consecutive readings. In this instance the alam will be
3
lInstant = one temperature reading is above (below) the threshold
lConsecutive = temperature readings are above (below) the threshold for the
time defined in the activation delay without interruption
lAccumulative = temperature readings are above (below) the threshold for the
total time defined in the activation delay time, but may not necessarily be
sequential.
triggered, if either 10 readings in total are above 8°C, or 5
consecutive readings above 8°C have occurred.
Any alarm condition that is activated will be shown on the PDF and
in the software.
Finalising the configuration
lClick Next to upload the configuration data to the USRIC-8(M).
lWhen the configuration is complete, unplug the USRIC-8(M) from
the USB socket and replace the protective cap.
If you wish to configure more USRIC-8(M) units with the same
configuration, insert the next recorder into the USB socket, wait until
it is ready for configuration and click Again. Alternatively you can use
the Profile function to configure multiple units with the same
settings.
You can upload the configuration to a USRIC-8(M) recorder as often
as required, however once started the unit cannot be configured
again.
USRIC-8(M) Start Options
During configuration with LogTag® Analyzer you can decide when
the USRIC-8(M) starts taking temperature readings.
l... via Push button start: The recorder will start taking
temperature readings as soon as you have pressed the
START/Mark button.
l... via Date/Time start : The recorder will start taking
temperature readings at the date and time you specify (local
time).
When you choose the push button start option, you can select to
record pre-start readings or Begin recording after a delay.
lIf you select pre-start readings, the USRIC-8(M) starts recording
as soon as it is unplugged from the USB port4 and will continue to
do so until you start the unit. No alarms are processed while pre-
start readings are being taken, pre-start readings will not appear
in the PDF file, and no PDF file will be generated. Using pre-start
readings is a good way do avoid data loss if you forget to start the
unit, as you can stillaccess the data using LogTag® Analyzer.
lIf you configure the USRIC-8(M) to start after a delay period, the
recorder will not immediately record temperature readings after
you have pressed START/Mark, but start a countdown timer
instead, and record readings only after the timer has ended. It
will, however, continue to take pre-start readings, if enabled.
You cannot combine a date/time start with pre-start readings or the
start delay function.
While Recording...
While the USRIC-8(M) is recording the green OK indicator blinks
every 4 seconds if none of the configured alarm conditions have been
met5.
Alerts
As soon as one of the alarm trigger conditions is met, the red ALERT
indicator blinks every 4 seconds. Depending on the alarm
4 The first pre-start reading is taken one log interval after you unplug the unit from
the USB port.
5 The blinking of the green OK indicator can be disabled during configuration of the
unit.
Page 6 of 15 USRIC-8(M) Product User Guide, Revision 2, copyright © 2004-2016, LogTag®Recorders . All rights reserved.
www.GlobalTestSupply.com
Find Quality Products Online at: sales@GlobalTestSupply.com
