User Manual

ManualsBrandsSiemens ManualsSensors PressureDifferential pressure sensor QBE64-DP4

CA1N1921E

201

8-01-31

Building Technologies

921

Differential Pressure

Sensor

QBE64-DP4

for neutral and mildly corrosive liquids and gases

Differential pressure sensor, suitable for gases or liquids, for the measurement of

positive or negative pressures and pressure differentials in HVAC systems.

• Measuring system based on ceramic lever technology

• Simple, robust construction for highly reliable operation

• For neutral and mildly corrosive liquids and gases

• Supply voltage AC 24 V or DC 18...33 V

• DC 0...10 V output signal

• Male-threaded G

/8" connection

• Delivery includes 2 screwed fittings for copper pipes, 6 mm diameter

Use

The QBE64-DP4 differential pressure sensor is particularly suitable for use in HVAC

systems for continuous monitoring of the level or flow rate of neutral or mildly corrosive

gases or liquids.

The pressure to be monitored acts on a ceramic sensor element. The measured

pressure is converted electronically into a linear DC 0 ...10 V output signal.

1921P01

Summary of content (6 pages)

PAGE 1
1921P01 921 Differential Pressure Sensor QBE64-DP4 for neutral and mildly corrosive liquids and gases Differential pressure sensor, suitable for gases or liquids, for the measurement of positive or negative pressures and pressure differentials in HVAC systems. • Measuring system based on ceramic lever technology • Simple, robust construction for highly reliable operation • For neutral and mildly corrosive liquids and gases • Supply voltage AC 24 V or DC 18...33 V • DC 0...
PAGE 2
Ordering and delivery When ordering, please specify the quantity, product name and type code. Example: 1 differential pressure sensor QBE64-DP4 A suitable fixing bracket is supplied with the sensor. Any accessories required must be ordered separately. Compatibility The QBE64-DP4 differential pressure sensors can be used in conjunction with all devices or systems capable of processing the DC 0…10 V output signal. Technology The pressure to be monitored acts on a ceramic sensor element.
PAGE 3
Mounting instructions Mounting instructions are enclosed with the differential pressure sensor. The QBE64-DP4 sensor can be connected directly with R1/8" screwed fittings. Special precautions must be taken on site when mounting the sensors to ensure airtight screw connections. Recommended measures Important note • Use standard T-fittings or drill and de-bur measuring holes, each 5 mm diameter, for the pressure tapping points (A).
PAGE 4
Technical data Electrical interface Power supply Low voltage (SELV, PELV) Operating voltage AC 24 V ± 15 %, 50/60 Hz or DC 18...33 V Current consumption with AC 24 V: < 5 mA with maximum output signal External supply line protection Fuse slow max. 10 A or Circuit breaker max. 13 A Characteristic B, C, D according to EN 60898 or Power source with current limitation of max. 10 A Output signal Working resistance Product data DC 0...
PAGE 5
Materials Pressure casing, cover Aluminium (AlMgSi1) Parts in contact with medium Weight Stainless steel (1.4305), ceramic element Sealant FPM (fluoroelastomer) Mounting bracket Stainless steel (1.4305) Mounting kit AQB2002 See "Accessories" Including packaging 0.43 kg Connection terminals G + U M 0 Color Brown Green White 80358 Supply voltage AC 24 V or DC 18...33 V DC 0...
PAGE 6
Published by: Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.