DTV CE

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DTV is a differential pressure switch for supervising air handling units. It is used, for example to mo-
nitor fans, filters or to control defrosting functions.
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Easy to mount.
Excellent long-term stability.
Can be used at temperatures down to - 20 C.
DTV
Differential pressure switch
for air up to 5000 Pa
For differential pressure up to 5000 Pa.
Lowest setpoint value 20 Pa (DTV200).
Compact format.
Nov 06
The pressure that is connected to P1 is compared
with the pressure connected to P2. When the diffe-
rential pressure exceeds the setpoint value the
contact changes. When the pressure switch is used
to supervise a fan one of the pressure connections
can be left open, (atmospheric pressure).
The setpoint value is set using the knob under the
lid. The setpoint value is visible through the lid.
The hysteresis is preset in the factory before deli-
very. The lid is secured with a single screw to
facilitate mounting and service.
Construction
The differential pressure switch consists of sensor
housing made of fibreglass reinforced plastic with a
synthetic membrane. The differential pressure
affects the spring suspended membrane which is
linked to a changeover contact.
1. Bracket
2. Membrane
3. P1 connection of the higher pressure
4. P2 connection of the lower pressure
6-650
positionsection
Function