User Manual

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Siem ens Differential pressure Sensor QBE61.3-DP.. CM1N1923en
Building Technologies 2014-10-22
Use
For acquiring the differential pressures in HVAC plant.
Suited for use with the following types of media:
· Neutral or slightly aggressive gases
· Neutral or slightly aggressive heating water and cold water (with or without additives,
such as hydrazine or glycol)
Type summary
Type reference Measurement range Max. overload on one side Nominal
pressure
QBE61.3-DP2 0...2 bar ± 12 bar PN 40 bar
QBE61.3-DP5 0...5 bar ± 20 bar PN 40 bar
QBE61.3-DP10 0...10 bar ± 20 bar PN 40 bar
Description Part no.
Water trap pipe, for medium temperatures above 85 °C (steam) or
below - 15 °C
4 286 1652 0
Ordering and delivery
When ordering, please give name and type reference of the unit, for example:
1 differential pressure sensor QBE61.3-DP2.
The sensor is supplied without the water trap pipe.
Equipment combinations
The differential pressure sensor can be used with all devices or systems capable of
handling the sensor’s output signal of DC 0...10 V.
Mode of operation
The differential pressure sensor uses a ceramics measurement system. The pressure
is measured by making direct contact with the medium. The pressure signal is
electronically converted to a linear DC 0...10 V signal (3-wire connection) and made
available at output “U”.
The output signal is proportional to the measurement range.
Mechanical design
The differential pressure sensor consists of:
· plastic housing with removable cover
· mounting bracket
· 2 threaded connections G½
· measurement system consisting of casing with an embedded ceramics element and
a printed circuit board with electronics
· strip with the connection terminals
The cable enters through a Pg 9 cable gland.
Accessories