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Type summary
Type (ASN)
Product number (SSN)
QBM4000-1
S55720-S247
QBM4000-3
S55720-S248
QBM4000-10
S55720-S249
QBM4000-25
S55720-S250
QBM4100-1U
S55720-S251
1
QBM4100-1D
S55720-S252
1
Type with digital display.
Conversion
Ordering and delivery
Example
Accessories
Mode of operation
2/6
Siemens
Smart Infrastructure
Measuring range
0...100 Pa
0...300 Pa
0...1000 Pa
0...2500 Pa
-50...+ 50 Pa
0...100 Pa
100 Pa = 1 hPa = 1 mbar
When ordering a differential pressure sensor, please specify the quantity, type, and
product name.
Type (ASN)
Product number (SSN) Product designation
QBM4000-1
S55720-S247
A round plug connector (Lumberg RKC 30/11) and a 2-meter PVC tube is included
with the differential pressure sensor.
Additional accessories may be ordered separately.
Additional sets of air duct probes are available depending on measuring require-
ments. Various mounting brackets are also available depending on installation
location.
Type
Name
AQB2000
Mounting bracket, for mounting sensors in isolated
air ducts.
AQB21.2
Top hat rail adapters (5 pieces) for DIN top hat rails,
HT 35-7.5
FK-PZ1
Air duct probe, short, stainless steel, with elastic
lead-through for simple, quick, and airtight mount-
ing.
FK-PZ2
Air duct probe, long, aluminum, with orifice plates
for precise measuring requirements.
The sensor acquires the differential pressure using a silicon rubber membrane and
ceramic bar. The sensor generates as per the deflection, a linear and temperature-
compensated output signal DC 0...10 V or 4...20 mA.
Differential pressure sensor QBM4000.../ QBM4100...
Output signal
DC 0...10 V
DC 0...10 V
DC 0...10 V
DC 0...10 V
4...20 mA
4...20 mA
Differential pressure sensor with calibra-
tion certificate.
LCD
No
No
No
No
No
Yes
Data sheet
N1590
N1590
N1589
N1589
CE1N1919en01
2019-10-09
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