Preparing a VFC400-WiFi for first use
VFC400-WiFi User Guide
11
VFC400-WiFi Start Options
During configuration with Control Solutions VTMC you can decide when the VFC400-WiFi starts taking
temperature readings:
Push button start
The logger will start taking temperature readings as soon as you have pressed the
START
/CLEAR/STOP
button
(see
Starting the Logger on page 29
).
When you choose the push button start option, you can select to record
Pre-start readings
or
Begin recording
after a delay
:
l
If you select
pre-start readings
, the VFC400-WiFi starts recording as soon as it is configured 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 to avoid data loss if you forget to start the unit, as you can still access the data
using Control Solutions VTMC.
l
If you configure the VFC400-WiFi to start after a delay period, the logger will not immediately record
temperature readings after you have pressed
START
/CLEAR/STOP
, but start a countdown timer instead,
and record readings only after the timer has ended. The value for the timer is set during configuration. If
enabled, it will continue to take pre-start readings.
Date/Time start
The logger will start taking temperature readings at the date and time you specify (local time). You cannot
combine a date/time start with pre-start readings or the start delay function.
Alarm Configuration Options
The VFC400-WiFi can display an alarm if either of the configured alarm trigger conditions have been met. This
is indicated on the display by showing the Alarm Indicator ( ) and the Day Alarm Marker for
today (
). Additionally, the red LED will blink every 4 seconds.
If an alarm is triggered, a notification is also sent immediately to your LogTag
®
Online account.
Each alarm trigger condition consists of a threshold temperature value, an activation type (which can be
instant, consecutive or accumulative
1
) 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 a lower threshold it is called a
lower alarm
.
All alarm trigger conditions are configured in the Alarm Settings tab during configuration of the logger with
Control Solutions VTMC.
The screen shows an example where:
1
l
Instant = one temperature reading is above (below) the threshold
l
Consecutive = temperature readings are above (below) the threshold for the time defined in the activation delay without interruption
l
Accumulative = temperature readings are above (below) the threshold for the total time defined in the activation delay time, but may not necessarily
be sequential
