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    OPTIMA-R-FC-EX

    VAV controller for areas with explosion-hazardous atmosphere

    • Damper tightness class 4 according to EN 1751 and EN 1751:2024

    • Casing tightness class ATC3 acc. to EN 1751:2024

    • Conform with hygienic requirements according to VDI 6022

    • High measurement/control accuracy in 5% deviation range

    • Air volume range of 57 m3/h to 12344 m3/h

    • Operating range of duct pressure up to 1000 Pa

    • Dust-resistant, can operate in an atmosphere with dust contamination

    Reliable Airflow Control in Hazardous Environments

    Engineered for explosion-hazardous areas such as laboratories, paint shops, and industrial plants, the OPTIMA-R-FC-EX ensures precise and safe air volume regulation where safety is critical

    Hard-Wired Control Reliability

    Remote setpoint adjustment and airflow feedback operate entirely through dedicated analog signals, ensuring dependable performance without reliance on network connectivity.

    High Measurement Accuracy and Stability

    Thanks to its multi-point averaging cross-flow sensor, the controller delivers high-precision airflow measurement and control with only a 5% deviation—ideal for demanding ventilation applications

    Hygienic and Durable Construction

    Built from galvanized steel and compliant with VDI 6022 hygienic standards, the OPTIMA-R-FC-EX combines long-lasting durability with easy-to-clean surfaces for use in clean or sensitive environments

    Description

    OPTIMA-R-FC-EX is a variable air volume (VAV) controller. The product is intended to control the air flow volume in a ventilation system. The product is installed into circular ducts. Field of application is in ventilation systems for areas with explosion-hazardous atmosphere, e.g. laboratories, industrial or pharmaceutical plants, paintshops, agricultural storage premises...

    Design

    OPTIMA-R-FC-EX consists of a casing, a damper blade and a measurement probe. The casing is manufactured from galvanized sheet steel. The casing contains a duct connection with a rubber gasket. The damper blade is manufactured from galvanized steel. The blade is equipped with a rubber gasket. The gasket eliminates leakage in the closed position. The aluminium measurement probe is connected to the VAV controller with flexible polyurethane impulse tubing. The special design of the multi-point averaging cross-flow sensor assures accurate air flow readings. Static-type ΔP sensor enables operation in a dust-contaminated atmosphere.

    Controls

    The VAV controllers are as standard equipped with compact controllers/actuators with analog setpoint and feedback signals in mode DC 0 V … 10 V (default factory setting) or 4 ... 20 mA. VAV compact controllers are factory calibrated as standard to the default air volume. Upon request, the VAV controllers can be adjusted to site-required settings prior to dispatch on V~min~ and V~max~ range. If specific air volumes for V~min~ and V~max~ or the control signal mode 4...20 mA are required, this must be indicated before the order of the units for adequate calibration in the factory.

    Tightness of the Blade and the Casing

    4C in all sizes

    The classification is done according to the standard EN 1751 for static pressure up to 1000 Pa.