Advantages of Laminar Air Flow Hoods (LAF) with E+E Sensors
Maintaining stable differential pressure readings is essential for reliable laminar flow and filter performance. Even slight drift from contamination, mounting stress, or ageing can undermine airflow regulation and trigger unplanned recalibration—adding downtime and risk. E+E’s EE600 integrates auto-zero calibration. With PCS10 and the USB configuration adapter, the interval is configurable to 10 minutes–7 days for the 3-wire analogue and digital versions, or 90 minutes–7 days for the 2-wire analogue version. During each auto-zero cycle (about 4 s), the device freezes its output, recalculates the zero offset, and corrects subsequent readings. The result is long-term zero-point stability, less manual calibration, and sustained measurement accuracy—keeping laminar flow reliable and reducing service needs.

Laminar airflow hoods, biosafety cabinets and fume cupboards expose sensors to constant mechanical and chemical stress. Regular cleaning with alcohol-based agents such as isopropanol, ethanol or methanol (including mixtures), hydrogen peroxide (H₂O₂) sterilisation, and continuous operation under high filter loads place extreme demands on measurement components that must remain stable and accurate over years of use.
- E+E sensors combine smart protection technologies to ensure lasting accuracy and reliability in these conditions by incorporating:
- Protective coatings and filters that shield humidity and temperature elements from solvents and chemical residues.
- ARC (Automatic ReCovery) to actively restore sensor performance after exposure to alcohols or cleaning vapours.
- Catalytic H₂O₂ filters to prevent degradation during bio-decontamination cycles.
- Ceramic-based sensing elements in air-velocity probes that offer exceptional mechanical and chemical stability.
- Stainless-steel housings and interchangeable filter caps to provide durable protection against corrosion and contamination build-up.
Together, these design features create a robust and maintenance-friendly sensor platform that ensures reliable, drift-free measurements and long service life even under the harsh cleaning, sterilisation and operational demands of pharmaceutical airflow systems.

Manufacturers often build multiple airflow products for different containment levels, each requiring distinct measurement parameters and configurations. Managing multiple suppliers complicates design and validation. E+E delivers a comprehensive sensor portfolio covering laminar-flow hoods, biological safety cabinets and chemical fume hoods. A uniform platform design, common calibration standards and unified documentation streamline validation, shorten integration time, reduce supplier dependencies and ensure consistent measurement reliability across all product lines.

In airflow control systems, measurement credibility is vital to support compliance with GMP, NSF/ANSI 49 and, where applicable, ATEX standards. E+E sensors are calibrated in the company’s EN ISO/IEC 17025-accredited, in-house laboratory, traceable to national metrology institutes (NMI). This provides complete documentation and reproducible accuracy, giving manufacturers the traceable quality needed for validation and certification processes.

Space inside laminar-flow hoods and biosafety cabinets is extremely limited, leaving little room for additional instrumentation. E+E offers compact, cost-optimised transmitters, such as EE576 and EE660, designed for straightforward installation in tight spaces. Their small form factor and flexible configuration simplify mechanical and electrical integration.

Products for Laminar Air Flow Hoods (LAF)
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