User Manual

ManualsBrandsSiemens ManualsSensors PressureDifferential Pressure Sensors QBM..5..C

Technical data

Electrical interface Power supply Safety extra low voltage (SELV, PELV)

QBM65.../C Supply voltage

Power consumption

Current draw

AC 24 V ±15 %, 50/60 Hz or DC 13.5...33 V

< 0.5 VA

< 10 mA

Output signal DC 0...10 V, R

Load

> 10 kΩ (not galvanically

separated, 3-wire connection, short-circuit-

proof, reversed polarity protection)

QBM75.../C

Supply voltage

Power consumption

Current draw

DC 11...33 V

< 0.7 VA

4...20 mA

Output signal

4...20 mA

Load

A0.02

V11voltage Operation −

(2-wire connection, short-circuit-proof, re-

verse polarity protection)

Product data Measuring range See “Type summary”

Measuring element Piezoresistive (silicone-rubber diaphragm

and ceramic lever)

Measuring accuracy in correct mounting position

and at a room temperature of 25 °C

(FS = Full Scale)

QBM65-3/C

QBM65-10/C

QBM65-25/C

Zero point

Total, linearity, reproducibility, and hysteresis

TC zero point

TC sensitivity

<±0.7 % FS

<±1 % FS

<±0.05 % FS/°C

QBM65-1/C

QBM75.1-1/C

Zero point <±1 % FS

Total, linearity reproducibility, and hysteresis

TC zero point

TC sensitivity

<±2 % FS

<±0.10 % FS/°C

<±0.06 % FS/°C

QBM75-1U/C Total, zero point, linearity, reproducibility, and

hysteresis

TC zero point

<±3 % FS (<±3 Pa)

<±0.10 % FS/°C

<±0.06 % FS/°C TC sensitivity

Long term stability ± 1 % FS to DIN IEC 60 770

Response time 90 % < 10 ms

Tolerable overload on one side

for ±

type

10 000 Pa

10 000 Pa on P1, 400 Pa on P2 or

-400 Pa on P1, -10 000 Pa on P2

Rupture pressure 2 × overload at room temperature

1.5 × overload at 70°C

Suitable media

Admissible temperature of medium

Air or non-aggressive gases

0...70 °C

Maintenance No maintenance required, recalibration rec-

ommended every 12 months

Protective data Degree of protection when mounted in

the recommended position

IP 54 to IEC 60 529

Safety class III to EN 60 730

Combustion class

Hin

ged cover

Pressure casing and housing

Plastic tubing

To UL94

V-2

4/6

Siemens Differential pressure sensors QBM65…/C, QBM75…/C CA1N1919E

Building Technologies 27.08.2010