Assortment / System Description

Room pressurization and fume hood control
Product range overview
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The flow sensor is suited for accurate and long-term stable recording of the air
face velocity of fume hoods with horizontal and vertical sliding front doors.
Figure: QVE3001
The cable sash sensor is a peripheral device to acquire the sash position of a
laboratory fume hood for Siemens laboratory fume hood controllers. The cable
sash sensors are compact, economical and water-resistant devices with flexible
cables, spring-loaded spools and a potentiometer to detect and measure the
linear position. The cable sensor measures a fume hood’s sash opening. The
sensor unit consists of a string with hook, roll, spring and potentiometer. The
roll is inserted and attached to the potentiometer shaft. The cable is wound on
this roll and is unwound against the spring force. The full length of the cable is
proportional to the potentiometer's resistance.
Figure: DXA.B130
Flow sensor
Cable sash sensor