User Manual

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Siemens Differential pressure sensor QBM64-P4 CA1N1921E
Building Technologies 2018-01-31
Technical data
Electrical
interface
Power supply
Operating voltage
Current consumption
Low voltage (SELV, PELV)
AC 24 V ± 15 %, 50/60 Hz or DC 18...33 V
with AC 24 V: < 5 mA with maximum output signal
Exte
rnal 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
DC 0...10 V, short-circuit-proof and proof polarity reversal
> 10 k
Ω
Product data
Differential pressure range
0 ... 4 bar
Measuring element
Ceramic
Measuring accuracy
Sum of linearity, hysteresis
and repeatability
Zero point, Full scale
TC zero point
TC sensitivity
Factory calibrated
<±0.5 % FS (FS = Full Scale)
<±0.4 % FS
<±0.04 % FS / K
<±0.015 % FS/K
Overload on
one side P1 / P2 8 / 8 bar
System pressure
25 bar (P1 and P2 simultaneously)
Bursting pressure
37.5 bar (1.5 x system pressure)
Dynamic response
:
Response time
Load alternation
<5 ms
< 50 Hz
Suitable media
Admissible temperature of medium
Air,mildly corrosive gases, liquids
–15...+ 85 °C
Maintenance
No maintenance required
Degree of protection
Protection degree of housing
IP65 according to EN 60529
Protection class
III according to EN 60730-1
Connections
Connecting cable
3-core, 1.5 m long
Cable entry
Cable gland
Pressure connections
Male-threaded G
1
/8
", With screwded fittings for
copper pipes, 6 mm diameter
Mountings
Mounting bracket
For mounting in ducts, on walls or ceilings and in
control panels
Orientation
Any (factory-calibrated with pressure connections at
bottom). When used with liquids: Purging points at top
Environmental conditions
Perm. ambient temperature
Operation
Storage/Transport
–15...+ 85 °C
–40...+ 85 °C
Perm. ambient humidity
<90 % r. h. (non-condensing)
Directive
s and Standards
Product standard
EN 61326-1
Electrical equipment for measurement, control and la-
boratory use. EMC requirements. General requirements.
EU Conformity (CE)
CA1T1923xx
*)
RCM Conformity
8000078879
*)
EAC Conformity
Eurasia Conformity
Env
ironmental compatibility
The product environmental declaration
CE1E1921
*)
contains data on environmentally compatible
product design and assessments (RoHS compliance, materials composition, packaging, environme
ntal
benefit, disposal).
*) The documents can be downloaded from http://siemens.com/bt/download.