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AHU filtration in buildings
AHU filtration in buildings

Maintaining filter efficiency

Indoor air quality is of prime importance in enclosed spaces such as commercial and public buildings. The accuracy and reliability of the instruments used to monitor the status of air handling unit (AHU) filters is therefore essential.

Air handling unit filters act as protective shields for the comfort and health of users, but they can also become clogged. To prevent clogging, protect the air handling system and save energy, it is essential to monitor the differential pressure across these filters.

Parameters to be monitored

  • Differential pressure


CONTINUOUS MONITORING

SPOT MEASUREMENTS

DATA LOGGING & TRACEABILITY

METROLOGICAL SERVICES

CONTINUOUS MONITORING
Our pressostats, manometers and differential pressure transmitters keep a watchful eye on the clogging and fouling of AHU filters. Continuous monitoring of these filters ensures preventive maintenance of air handling systems.
Our electronic transmitters designed to monitor filters are versatile and ultra-reliable. They can trigger visual and audible alarms, and send their measurements to the building management system. In addition, some have an auto-zero mechanism for constant accuracy over time.
CONTINUOUS MONITORING
Inclined Liquid Column Manometers

Inclined Liquid Column Manometers

MG Series
Pressostat

Pressostat

PST-11
Differential pressure switches

Differential pressure switches

Si-DPMS
CONTINUOUS MONITORING
SPOT MEASUREMENTS
Our portable differential pressure measurement instruments can be used to carry out the frequent checks required on filtration systems. Certain models with modular probes allow other types of measurement (flow, temperature, etc.).
Portable and reliable, our instruments are there to meet all the needs of technicians performing air handling unit checks, inspections and commissioning. From the pocket micromanometer to the multifunction instrument, all variants are available to meet every type of task.
SPOT MEASUREMENTS
Digital Differential Pressure Manometer

Digital Differential Pressure Manometer

Si-PM3
Manometer

Manometer

MP 110 / 111 / 112 / 115
Micromanometer

Micromanometer

MP 210
SPOT MEASUREMENTS
DATA LOGGING & TRACEABILITY
Compact and fully autonomous, our differential pressure data loggers continuously monitor filter clogging. The real-time display allows visual inspection of the measured values, optimising maintenance operations.
Easy to install and secure, our lithium battery-powered units record differential pressure for several years - so you can rationalise filter replacement by analysing the way they clog up. The Tracklog version communicates over long distances and can send alerts by SMS/email (LoRa).
DATA LOGGING & TRACEABILITY
Differential pressure

Differential pressure

KP 320
DATA LOGGING & TRACEABILITY
METROLOGICAL SERVICES
Backed by 45 years of expertise in metrology, our metrological technicians come to your site (France only) to calibrate your instruments without service disruption for the majority of air parameters, whatever the brand of your sensors.
For more specific requirements, our twenty metrology experts calibrate all brands of equipment in our French laboratories for all air parameters (Cofrac ISO 17025 accreditation for temperature and hygrometry in Montpon).
METROLOGICAL SERVICES
Blog posts
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    Sauermann pressure sensors play a vital role in face mask tests

    As lockdown rules are eased in many parts of the world, the production of respiratory face masks is being ramped up to cater to massive demand from countries affected by the COVID-19 pandemic. Chinese filter manufacturers are turning in large numbers to Sauermann to certify their products to the strictest international standards. Filter test benches require high-precision differential pressure sensors, such as our CP 112 range, as part of the test protocol. Here, we explain how and why.

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  • Using CO2 concentration to measure air change rate
    Using CO2 concentration to measure air change rate

    Air change rate (ACR) has always been a key concept in building ventilation system management. But now, it’s become even more important – as a vital measurement in the fight against COVID-19, and against bacteria and viruses more generally.

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