NIOX FeNO VERO, Quick Reference Manual, Page: 4 / 4

6-second measurement mode
(See User Manual)
How to interpret alert codes
A02
Sensor stabilization
Remove any sources of disturbance
(such as cordless phones/mobile phones
or gas emitting appliances). Wait for the
Sensor to stabilize.
A03
Unstable system
Remove any sources of disturbance
(such as cordless phones/mobile phones
or gas emitting appliances). Wait for the
system to stabilize.
A04
Count down time
The remaining time until the instrument is
ready to use is displayed.
A05
Lock MMI
When the instrument is connected to a
PC the main view buttons will be locked.
For other alert codes please use the
User Manual.
A10
Exhalation too strong
Press Return and repeat the
measurement with less exhalation force.
A11
Exhalation too weak
Press Return and repeat the measurement
with greater exhalation force.
A12
Measurement failed
No exhalation detected or the user
failed to exhale within 15 seconds from
the inhaling. Press Return button, restart
the measurement and exhale into the
instrument directly after inhalation.
A21
Measurement failed
Remove any sources of disturbance
(such as cordless phones/mobile phones
or gas emitting appliances). Then press
Return. When the instrument is ready for
use repeat the measurement. If the alert
persists, unplug and reconnect the power
supply unit to restart the instrument.
NIOX VERO® can be operated
with two different exhalation
times, 10 seconds and
6 seconds.
The 10-second test is the preferred mode. For children who
are not able to perform the 10-second test, the 6-second test
is an alternative.
The 6-second test should be used with caution in patients
over the age of 10 years. It should not be used in adult
patients. Incorrect use of the 6s exhalation mode may result
in falsely low FeNO values, which can lead to incorrect
clinical decisions.
NIOX VERO® and NIOX® are registered trademarks of Circassia AB. CIRCASSIA is a registered trademark of Circassia Limited.
Copyright © 2018 Circassia Limited All rights reserved. MKT-PRM-WW-0047