AVL DITEST COUNTER User Manual

AVL DiTEST Counter
Working with the AVL DiTEST Counter
17
User manual
6.2 Stand-Alone Mode
6.2.1 Screen Symbols
Operation of the AVL DiTEST Counter in stand-alone mode is done by the two buttons
and the display. The following symbols occur on the bottom of the display to show the
status of the device at a first glance:
Symbol
Explanation
Heating on / off
Warning not active / active
Remote operation via Bluetooth not active / active
IoT modul not connected / connected*
Keyboard not connected / connected
Remote operation not active / active
*Smart Service via Smart Hub (externally connected) in preparation
6.2.2 Routine Checks (Self-test)
To ensure that measurement results are not falsified, the device must be subjected to
certain self-tests on a regular basis. If these tests are not performed in time, the device
will prompt the user to do so.
The following tests must be carried out:
Check
Explanation
Schedule
Zero check
Measurement with HEPA filtered,
particulate-free air (clean air test
procedure) to check if there is any
contamination in the gas handling
system.
Every 24 hours
Leakage test
Checks if the gas handling system is
airtight.
Once a month
Corona
1
self-
test
Checks the correct functionality of the
Corona discharge.
Once a week
FCEM
2
self-test
Checks the correct functionality of the
FCEM.
Once a month
The device requests the self-test automatically when needed.
1
The Corona module is a main part of the internal core sensor of the device. In the Corona, the aerosol
particles get electrically charged.
2
The Faraday cup electrometer (FCEM) is another main part of the internal core sensor. In the FCEM, the
electrical charge of the aerosol particles is measured.

AVL DITEST COUNTER Specifications

General

Brand	AVL DITEST
Model	COUNTER
Category	Measuring Instruments
Language	English