Dansensor® MAP Check 3 Vacuum EN User Guide 11
P/N 320598-G
11/2019
2. Introduction
Dansensor® MAP Check 3 Vacuum
The Dansensor® MAP Check 3 Vacuum Vacuum is a gas analyser designed for measurement
of O
2
or O
2
/CO
2
concentrations on packaging machines that flushes gas in cycles controlled
by the packaging machine. This can either be a tray sealer or thermo former that uses vacuum
or a packaging machine that flushes gas over the product in a cycle, where the device is
connected to an external vacuum to enable measuring.
The device has no built-in pump and depends on external vacuum.
Depending on the version, the analyser measures oxygen (O
2
) and carbon dioxide (CO
2
)
simultaneously or only oxygen (O
2
).
For additional system quality control, all versions are available with built-in buffer tank
measurement capability to ensure proper mixture and pressure in the tank before start of
packaging. These models connect directly with a sample hose to the buffer tank and are
independent of tank pressure within the specified working range.
The device measures the O
2
or O
2
/CO
2
concentrations of gas in the die of the packaging
machine, immediately before it is sealed. This measuring method is, therefore, non-
destructive. The concentration of gas is measured for each packaging machine cycle.
The device will ensure the user a quality control of oxygen and carbon dioxide in the
packaging process, by observing critical points in the machine; gas concentration at die and if
used also quality of the buffer tank contents before start.
The device has a Diagnostics view that will facilitate running-in of the packaging machine for
new production. It gives a view to critical parameters of importance to the measuring cycle.
This reduces the number of laboratory tests required to make machine ready for production.
The device takes out the measuring gas from the product vacuum directly on the machine
vacuum die (or from the gas flushed in to a chamber if there is no vacuum in the packaging
machine). The results of this type of measurements are typically different from what is actually
measured in spot tests on packaged products. This is due to the fact that sample is taken
directly in the stream of gas in vacuum outlet of die.
Results from the device should be used as a process status indicator rather than exact
measurement of package contents. Combined with the buffer tank measuring capability this
increases the level of certainty that packages will be packed with correct gas concentrations.
Observation of changes in packaging machine can be made using the product warning and
alarm settings to alert user or machine that something is out of range.
The device is prepared to communicate with the packaging machine and is, therefore
typically a fully integrated part of the machine. Communication can be either RS232 or LAN
(Ethernet) using PSIP and Modbus TCP protocols.
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