User Manual

ManualsBrandsSiemens ManualsSensors PressurePressure Sensors for refrigerants incl. ammonia QBE2x04xx

A6V10434

676_en--_b

2017

-12-01

Building Technologies

Pressure Sensors

QBE2004-P…

QBE2104-P…

or refrigerants incl. ammonia

• High-precision measuring

• Measuring range -1 to 60 bar relative

• Supply voltage AC 24 V / DC 12…33 V or DC 7…33 V

• DC 0 ...10 V or DC 4…20 mA output signal

• Seal free, fully welded

• Measurement unaffected by changes in temperature

• High temperature stability

• Internal thread 7/16-20 UNF

• High overload resistance

• Suitable for all media, including ammonia

• Maintenance free thanks to outstanding long-term stability

• Robust and compact construction

1909P01

Summary of content (6 pages)

PAGE 1
909P01 Pressure Sensors QBE2004-P… QBE2104-P… for refrigerants incl. ammonia • • • • • • • • • • • • A6V10434676_en--_b 2017-12-01 High-precision measuring Measuring range -1 to 60 bar relative Supply voltage AC 24 V / DC 12…33 V or DC 7…33 V DC 0 ...
PAGE 2
Use The pressure sensors are suitable for the measurement of static and dynamic positive pressure in HVAC plant, particularly in hydraulic and refrigeration systems using liquid or gaseous media. Type summary Type reference Stock number QBE2004-P10U QBE2004-P25U QBE2004-P30U QBE2004-P60U S55720-S310 S55720-S311 S55720-S312 S55720-S313 S55720-S314 S55720-S315 S55720-S316 S55720-S317 QBE2104-P10U QBE2104-P25U QBE2104-P30U QBE2104-P60U Pressure range −1...+9 bar −1...+24 bar −1...+29 bar −1...+59 bar −1..
PAGE 3
Mechanical design The pressure sensor consists of: • Piezo-resistive measuring element integrated in the stainless steel case • Pressure connection, female thread 7/16-20 UNF • PVC cable electrical connection, 1.5m No changes or adjustments are possible. Mounting notes Pressure measurement with liquids The tapping point should be at the side, near the bottom of the pipe.
PAGE 4
Technical data Electrical interface Power supply Protection by extra low voltage (SELV, PELV) Supply voltage (QBE2004…) Current consumption AC 24 V ± 1 5 % , 50...60 Hz or DC 12...33 V < 7 mA, < 0.5 VA Supply voltage (QBE2104…) Current consumption DC 7…33 V < 23 mA, < 0.7 VA 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 QBE2004… DC 0 ...
PAGE 5
QBE2004-P… (+) G QBE2104-P… Legend (0) M SBT-Terminal marking G (+) U( ) M (0) (+) G ( ) SBT-Terminal marking G (+) Ι( ) Core color brown green Meaning Supply voltage AC 24 V or DC 12...33 V Output signal DC 0...10 V (Reference point 0) white GND Core color brown green Meaning Supply voltage DC 7...33 V Output signal DC 4...20 mA 1907G02 Legend ( ) U 1907G01 Internal diagram 5/6 Siemens Building Technologies Pressure sensors QBE2004-P...
PAGE 6
Dimensions QBE2004-P… QBE2104-P… Published by: Siemens Switzerland Ltd. Building Technologies Division International Headquarters Gubelstrasse 22 6301 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.com/buildingtechnologies © Siemens Switzerland Ltd 2005 Delivery and technical specifications subject to change 6/6 Siemens Building Technologies Pressure sensors QBE2004-P...