## [AHU filtration in buildings](/en-GB/solutions/filtration-ahu-buildings) ![filtration ahu solutions](/sites/default/files/entityone_paragraphs/images/SOLUTION_Intro_468x468.png) ## Maintaining filter efficiency Indoor air quality is 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 **Pression différentielle** Continuous monitoring ## 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. [All our transmitters](https://sauermanngroup.com/en-GB/measuring-instruments/transmitters) [ read more about Si-DPMS ](/fr-FR/instruments-de-mesure/manometres/pressostats/si-dpms-0) [![Si-DPMS](/sites/default/files/styles/medium/public/images/Si-DPMS_1_0.png?itok=T1G2tahK)](/fr-FR/instruments-de-mesure/manometres/pressostats/si-dpms-0) #### Si-DPMS Pressostats différentiels Le pressostat différentiel mécanique Si-DPMS offre une solution fiable, simple et efficace de contrôle de pression d’éléments aérauliques tels que conduits, filtres ou ventilateurs. Il convient également pour la protection contre la surchauffe et le gel dans les systèmes de refroidissement industriels. [ read more about MG Series ](/en-GB/measuring-instruments/manometers/liquid-column-manometers/mg-series) [![mg40](/sites/default/files/styles/medium/public/images/MG50_1.png?itok=-9pArRZI)](/en-GB/measuring-instruments/manometers/liquid-column-manometers/mg-series) #### MG Series Inclined Liquid Column Manometers Kimo's MG series are inclined liquid column manometers with AWS.10 manometer liquid with a density of 0.87. Inclined liquid column manometers measure slight variations in pressure, depression or differential pressure of air or gas. [ read more about PST ](/en-GB/measuring-instruments/transmitters/pressure-transmitters/pst) [![pst](/sites/default/files/styles/medium/public/images/pst.jpg?itok=5y22b5pZ)](/en-GB/measuring-instruments/transmitters/pressure-transmitters/pst) #### PST Pressostat A manostat is a pressure gauge which has a switch inside its casing. At a selected pressure the switch activates an electrical contact and stops the machine on which it is wired. Kimo’s PST is used to control pressure. ![filtration ahu](/sites/default/files/styles/max_1300x1300/public/images/SOLUTION_Surveillance-permanente_699x393_B.png?itok=vlQKpbau) Spot measurements ## 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. [All our portable instruments](/en-GB/measuring-instruments/portable-instruments) [ read more about Si-PM3 ](/en-GB/measuring-instruments/portable-instruments/micromanometers/si-pm3) [![si-pm3](/sites/default/files/styles/medium/public/images/pm3.png?itok=OEh2NIRY)](/en-GB/measuring-instruments/portable-instruments/micromanometers/si-pm3) #### Si-PM3 Digital Differential Pressure Manometer The palm-sized Sauermann Si-PM3 digital differential pressure manometer easily measures pressure. [ read more about MP 110 / 111 / 112 / 115 ](/en-GB/measuring-instruments/portable-instruments/micromanometers/mp-110-111-112-115) [![mp110](/sites/default/files/styles/medium/public/images/mp110.jpg?itok=sbGMwef7)](/en-GB/measuring-instruments/portable-instruments/micromanometers/mp-110-111-112-115) #### MP 110 / 111 / 112 / 115 Manometer Kimo offers a wide range of cleanroom products including the MP 110 / 111 / 112 / 115 Portable Differential Pressure Meter. [ read more about MP 210 ](/en-GB/measuring-instruments/portable-instruments/micromanometers/mp-210) [![mp210](/sites/default/files/styles/medium/public/images/mp210.jpg?itok=0-0vaS0K)](/en-GB/measuring-instruments/portable-instruments/micromanometers/mp-210) #### MP 210 Micromanometer Kimo’s MP 210 micromanometer measures pressure, air velocity, airflow, temperature, tachometry, gas leak and carbon monoxide (up to 6 simultaneous measurements). ![filtration ahu ](/sites/default/files/styles/max_1300x1300/public/images/SOLUTION_Mesures-ponctuelles_699x393.png?itok=ANTo4Dw9) Data logging & traceability ## 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). [All our data loggers](/en-GB/data-loggers) [ read more about KP 320 ](/en-GB/measuring-instruments/data-loggers/autonomous-data-loggers/kp-320) [![kp320b](/sites/default/files/styles/medium/public/images/kp320b.jpg?itok=j1e-UIlG)](/en-GB/measuring-instruments/data-loggers/autonomous-data-loggers/kp-320) #### KP 320 Differential pressure The highly accurate KP 320 Differential Pressure Data Logger with wireless connection is the ideal high performance data logger for critical room pressurization applications. Data Loggers are widely used in agriculture, industry and clinical laboratories to monitor a variety of parameters. [ read more about KP - TrackLog ](/en-GB/measuring-instruments/data-loggers/lorar-data-loggers/kp-tracklog) [![KP-TrackLog-front](/sites/default/files/styles/medium/public/images/KP-1.jpg?itok=5WOAqRg2)](/en-GB/measuring-instruments/data-loggers/lorar-data-loggers/kp-tracklog) #### KP - TrackLog LoRa®-Powered Pressure Data Loggers The KP TrackLog Data Logger records differential pressure. LoRa® is a Low Power Wide Area Network. It offers a mix of long range, low power consumption and secure data transmission that is making our world a Smart Planet. [General conditions of sale](https://sauermanngroup.com/en-GB/general-conditions-sale) ![KP 320 filtration](/sites/default/files/styles/max_1300x1300/public/images/SOLUTION_Enregistrement-Tracabilite_699x393_Draft.png?itok=RIBTRIHb) Metrological services ## 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). [All our services](https://sauermanngroup.com/en-GB/services) ![MP 210 filtration](/sites/default/files/styles/max_1300x1300/public/images/SOLUTION_Services-Metrologiques_699x393_Draft.png?itok=3gWvqT5a) Blog posts [ ![workplace IAQ](/sites/default/files/styles/insight_teaser/public/images/thumb.jpg?itok=Ry5uqQVR) July 20, 2022 Offices: measuring air quality for maximum occupant health and comfort Workplaces are critical environments. So, it’s vital to monitor indoor air quality since it affects occupant comfort, health and productivity. Instruments ](/en-GB/insights/offices-measuring-air-quality-maximum-occupant-health-and-comfort) [ ![ACR CO2 TRA](/sites/default/files/styles/insight_teaser/public/images/CO2-600.png?itok=SIVP6uW8) April 19, 2022 Using CO2 concentration to measure air change rate New health and safety rules recommend checking the air change rate by measuring the CO2 concentration against a target value. Here, we explain why and how it’s done. Instruments ](/en-GB/insights/using-co2-concentration-measure-air-change-rate) [ ![mask covid](/sites/default/files/styles/insight_teaser/public/images/Stop_Coronavirus_COVID-19_in_Russia_2.jpg?itok=wCMg1h_e) May 13, 2020 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. Instruments ](/en-GB/insights/sauermann-pressure-sensors-play-vital-role-face-mask-tests) ![France](/sites/default/files/styles/thumbnail/public/images/Fichier%202%404236x.png?itok=2qUd9mwj) ## In-House Our two main factories Our customer service Our metrology laboratories Our Research & Development team ![45 years of experience](/sites/default/files/styles/thumbnail/public/2024-02/45Years_EN_0.png?itok=9pvTvWBe) ## 45 years of experience For over 45 years, the Sauermann Group has been designing, manufacturing and marketing products and services dedicated to the HVACR and industrial markets. [Information, quotes: I'd like to be called back](/en-GB/contact)