FC400

Variable microcontroller system for controlling and monitoring the exhaust air volume flow or the face velocity of fume cupboards
as a function of the vertical and horizontal sash position.

Product Description

Variable microcontroller system for controlling and monitoring the exhaust air volume flow or the face velocity of fume cupboards as a function of the vertical and horizontal sash position. Depending on the configuration, the following operating modes for the fume cupboard control are available:

Standard model:
Fully variable control FC400-V

More available models:
Face velocity control FC400-F
Face velocity control FC400-FP with limitation to ⩒min und ⩒max
Sash position sensor control FC400-W
Constant control (1-/2-/3-point) FC400-K
Constant control (1-/2-/3-point) FC400-KW with sash position sensor

The integrated function monitoring according to DIN EN 14175-6 provides maximum safety for the laboratory staff. An acoustic alarm and an optical alarm on the display of the FC400 are triggered if the value falls below the respective setpoint value for exhaust air. The standard model is suitable for all types of laboratory fume hoods and extractor systems.

Special Features

Microprocessor-controlled variable control system
Programming and retrieval of all system values via software PC2500
Air flow sensor for measuring the face velocity
Integrated function monitoring of safe laboratory fume hood operation according to DIN EN 14175-6
Optional monitoring of a supportive flow
Optional monitoring of a washer
Variant 1: Integrated Modbus functionality, extendable with analogue functionality
Variant 2: Integrated analogue functionality, extendable with Modbus functionality

Functional Description

The laboratory fume hood control FC400 constantly compares the actual values determined by the sensors used and controls the pre-set nominal value quickly and precisely. The precalculated return air demand by SCHNEIDER is determined immediately and directly available as setpoint value. This decisively improves the control time of the room air control system (e.g. VAV supply air volumetric flow controller by SCHNEIDER).

Advantages of the front-damper-dependent variable laboratory fume hood control

The toxic release safety of the laboratory fume hood in combination with minimum air consumption is guaranteed at each sash opening. The sturdiness of the laboratory fume hood operation in terms of air ventilation is achieved by suitable parameter setting of the constant face velocity and can be adapted to any laboratory fume hood designs. The air flow sensor AFS100 is used as standard sensor for FC400-F. By mounting an additional differential pressure sensor 4 to 300 Pa, a fully variable control with FC400-V is achieved via the connection of three independent sensors (sash position sensor, static differential pressure transmitter and air flow sensor). The control FC400 checks the three sensors for plausibility and the correlation between the actual values of the differential pressure and airflow sensor and the actual value of the sash position sensor. This constitutes a substantial improvement of the safety for the entire control system and for the user. Measuring errors and deviations are detected immediately and signalled by an alarm.