Siemens WFM407 series User Manual

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Building Technologies Electronic Heat Meter CE1N5331en
HVAC Products 03.11.2005
Technical data
Metrological accuracy class 3 as per EN 1434
ratio q
s
/ q
p
= 2 : 1
ratio q
p
/ q
i
= 25 : 1 vertical
ratio q
p
/ q
i
= 50 : 1 horizontal
Environmental class A as per EN 1434
Energy unit
Standard
On request
kWh
GJ
Flow values
Minimum flow q
i
Horizontal
Vertical
Nominal flow q
p
Maximum flow q
s
Starting value – horizontal
0.6 m
3
/h 1.5 m
3
/h 2.5 m
3
/h
12 l/h 30 l/h 50 l/h
24 l/h 60 l/h 100 l/h
600 l/h 1500 l/h 2500 l/h
1200 l/h 3000 l/h 5000 l/h
4 l/h 10 l/h 16 l/h
Upper limit of thermal power P
S
0.6 m
3
/h 1.5 m
3
/h 2.5 m
3
/h
125 kW 313 kW 523 kW
Quality of heating water VDI guide line 2035
(VDI – union of german engineers)
Max. permissible operating pressure 10 bar
Range of use – flow meter 15… 90 °C
Temperature measurement
temperature range of sensor
temperature difference
15…105 °C
3…90 K
Behaviour of flow
Flow ≤ 2,1 ×* q
p
Flow > 2,1 × q
p
Linear
Constant
Permissible ambient temperature
Transport and storage
Operation
–20 °C .. +70 °C
+5 °C .. +55 °C
Battery life time 10 years + ½ years
Connection sizes and mass
threaded end connections
Installation length
Mass
0.6 m
3
/h 1.5 m
3
/h 1.5 m
3
/h 2.5 m
3
/h
G¾B G¾B G¾B G1B
110 mm 80 mm 110 mm 130 mm
0,620 kg 0,565 kg 0,604 kg 0,686 kg
Temperature sensor
Temperature sensing element
Temperature probe type
Response time
τ
0,5
Diameter of protective sheath
Connecting lead
Pt 1000 as per EN 60751
Short DS
≤3.5 s
5 mm
1.5 m
Standards, CE
EN 61000-4-3:2002+A1:2002
DIN EN 61000-4-Parts 2, 4, 8
DIN EN 55022
DIN EN 1434, (1997, 2002)

Siemens WFM407 series Specifications

General

Brand	Siemens
Model	WFM407 series
Category	Measuring Instruments
Language	English