User Manual

ManualsBrandsSiemens ManualsFastening aidsMounting kit for QBE.../. Montagesatz für QBE... AQB51.1

CA1N1904E

10.06.2005

Siemens Building Technologies

HVAC Products

904

Pressure Sensors

QBE620-P...

for liquid and gaseous media

Pressure sensor for the measurement of positive pressure in HVAC applications.

• Piezo-resistive system of measurement

• DC 0...10 V output signal

• Complete sensor cast in synthetic resin

• Measurement unaffected by changes in temperature

• High temperature stability

• No mechanical ageing or creepage

• External thread G½"

Use

The QBE620-P... pressure sensors are suitable for the measurement of static and dy-

namic positive pressure in HVAC applications, particularly in hydraulic and pneumatic

systems using liquid or gaseous media.

The sensor operates on piezo-resistive measuring principles. The ceramic diaphragm

(thick-film hybrid technology) measures the pressure through direct contact with the

medium.

The measurement is converted electronically into a linear output signal of DC 0 ...10 V.

1904P01

Summary of content (6 pages)

PAGE 1
904P01 1 904 Pressure Sensors QBE620-P... for liquid and gaseous media Pressure sensor for the measurement of positive pressure in HVAC applications. • Piezo-resistive system of measurement • DC 0...10 V output signal • Complete sensor cast in synthetic resin • Measurement unaffected by changes in temperature • High temperature stability • No mechanical ageing or creepage • External thread G½" Use The QBE620-P...
PAGE 2
Type summary Seven different pressure sensor types are available, covering the entire pressure range from 0 ... 40 bar. Type Pressure range QBE620-P1 0 ... 1 bar 0 ... 100 kPa 0 ... 14,5 psi QBE620-P4 0 ... 4 bar 0 ... 400 kPa 0 ... 58 psi QBE620-P5 0 ... 5 bar 0 ... 500 kPa 0 ... 72 psi QBE620-P10 0 ... 10 bar 0 ... 1,0 MPa 0 ... 145 psi QBE620-P16 0 ... 16 bar 0 ... 1,6 MPa 0 ... 232 psi QBE620-P25 0 ... 25 bar 0 ... 2,5 MPa 0 ... 362 psi QBE620-P40 0 ... 40 bar 0 ...
PAGE 3
Mechanical design The QBE620-P... sensors are compact units, encapsulated in synthetic resin, and cannot be dismantled. No changes or adjustments are possible. Mounting notes Mounting instructions are enclosed with the sensor. The QBE620-P... sensors are designed for direct connection to screwed fittings with G½" threads. Appropriate measures must be taken to ensure a leak-proof fitting. The tapping point should be at the side, near the bottom of the pipe.
PAGE 4
Technische Daten Electrical interface Power supply Supply voltage – Max. voltage tolerance Current consumption Output signal Funktional data Application range Accuracy: Total of linearity, hysteresis and reproducibility Zero point offset voltage Temperature drift: TC zero point TC sensitivity Response time 90 % Nominal pressure Protection Connections Environmental conditions Standards Max. admissible pressure Rupture pressure Media Admissible temp.
PAGE 5
Internal diagram Legend ( ) U 1904G01 (+) G . . . . . . . . (0) M SBT terminal marking G (+) U( ) Color of core Brown Green Meaning Supply voltage AC 24 V or DC 18 ... 33 V Output signal DC 0...10 V (signal ground GND) M (0) White GND Dimensions All dimensions in mm G½ ø 40 1904M01 SW 27 20 Montagebügel AQB22.1 10 ~ 17 62 37,5 37 5 21 M4 4,5 57 SW27 ø 4,5 10 1904M02 20 20 5/6 Siemens Building Technologies HVAC Products Pressure sensors QBE620-P… CA1N1904E 10.06.
PAGE 6
/6 © 2005 Siemens Switzerland Ltd. Siemens Building Technologies HVAC Products Pressure sensors QBE620-P… Subject to change CA1N1904E 10.06.