To ensure good indoor air quality in tertiary and
ERP buildings, Sauermann quickly became aware
of the crucial importance of measuring flow, and
especially its corollary: the rate of
renewal of indoor air ( TRA). This is why the DBM 620 was
specially designed: to simplify the calculation of
the TRA thanks to the mobile application of the
DBM 620 balometer. The measurement of air flow
rates is particularly crucial to ensure a sufficiently
high and optimized air renewal rate. terms
of energy consumption.

“The balometer is the most versatile and effective
portable instrument for measuring mouth flow”

The air renewal rate is particularly important to
ensure the constant sanitation of indoor air by
injecting filtered air into a room. This renewal is
the most effective way to reduce the
concentration of pollutants such as volatile
organic compounds (VOCs), bacteria, viruses, or
dust. Measuring TRA is therefore particularly
important to ensure that the air inside a confined
space is clean and healthy. The balometer is the
most versatile and effective portable instrument
for 
measuring flow: it easily adapts to any type of air
vent, for blowing or extraction, and offers greater
measurement accuracy than any other solution.

Measuring differential pressure across an air filter
is the most common maintenance intervention,
and one of the most important. Regularly
replacing clogged filters helps improve air quality
and flow rates while saving energy. A new filter
actually causes much less pressure loss than a
clogged filter, and will not contaminate the air
passing through it.

“The most common maintenance intervention,
and one of the most important”

Temperature and humidity are among the basic
parameters of indoor air management. They
condition many other elements of the ventilation
chain, starting with the heating and air
conditioning settings.

These two parameters can also have significant
consequences on the health and comfort of the
occupants of a tertiary building, and on the
durability of certain materials, mainly to avoid
mold. This is particularly why these parameters
are measured both within the ventilation ducts
and in the ambient air of the living spaces of a
building.

“Certain specific tertiary environments require
very fine management of temperature and
humidity, such as server farms”

Certain specific tertiary environments also
require very fine management of temperature and
humidity, such as server farms (data centers) and
certain similar technological premises.

For verification and maintenance interventions,
Sauermann offers portable devices and cones
adapted in different formats to quickly obtain
reliable flow measurements on hydrants. The
Sauermann devices intended for these
measurements are thermo-anemometers, they
therefore make it possible to measure at the same
time the temperature of the air flow in order to
better understand the performance of the aeraulic
system.

Better manage indoor air quality while optimizing
the energy consumption of the ventilation system

Flow measurement is absolutely crucial in indoor
air management. This parameter conditions all of
the building's air conditioning conditions. Its
precise adjustment makes it possible to better
manage indoor air quality while optimizing the
energy consumption of the ventilation
system. The flow rate assessment must also be
carried out on the extraction vents, to check that
the air in the room, loaded with CO2, particles,
chemical or biological compounds and other
pollutants is effectively evacuated.

The concentration of carbon dioxide in indoor air
is a crucial measure for assessing indoor air
quality. CO2 is the preferred indicator of the
indoor air renewal rate (TRA) for several reasons:
it is very reactive to changes in indoor
atmospheric conditions, it directly takes into
account the number of occupants in a room (each
exhaling from CO2), and it is quick to measure.

“Sauermann instruments are equipped with NDIR
(non-dispersive infrared) type CO2 sensors, the
only ones capable of providing reliable
measurement results for the CO2 level.”

However, reliable CO2 measurement requires the
use of high-end and calibrated devices. This is
why Sauermann instruments are equipped with
NDIR (non-dispersive infrared) type CO2 sensors,
the only ones capable of providing reliable
measurement results for the CO2 level. The
Sauermann AQ 110 portable measuring
instrument is laboratory adjusted and certified to
meet all regulatory requirements for CO2
measurement. It can take one-off measurements,
but also 
record measurement campaigns using its
internal memory, to study the evolution of CO2
throughout the day in a room depending on its
occupancy. These campaigns make it possible to
better target the necessary TRA by adjusting the
air flow rates of the ventilation system.

Tachometers provide precise measurement of the
actual rotation speed of a fan within an air
handling unit. These elements are mechanically
subject to wear, and regularly checking their
performance helps prevent breakdowns that lead
to operational interruptions, or worse, to material
damage in sensitive technological premises such
as server farms.

Prevent outages that lead to operational
interruptions, or worse, material damage in
sensitive technology premises.

The Sauermann CT 110 tachometer allows easy
and ultra-reliable measurements of these
parameters, thanks to a very handy remote probe,
operating in optical or contact mode, all delivered
with a calibration certificate.