Technical data

SOLAR
THERMAL
SOLAR
THERMAL
Flow meter
Pulse rate 10 l/pulse
Nominal diameter DN 20
Max. operating temperature Tmax 120 °C
Max. operating pressure PN 10 bar
Nominal flow Qn 2.5 m³/h
Max. flow Qmax 5 m³/h
Connecting threads on meter body according ISO 228/1 (AGZ - Inch) G 1 B
Connecting threads of couplings according DIN 2999 (AGV - Inch) R ¾
Length l 130 mm
Width w 88 mm
Height h 112 mm
Weight without couplings 1.0 kg
90|
Steca Elektronik GmbH | 87700 Memmingen | Germany | Fon [phone] | Fax [phone] | www.stecasolar.com
|91
Steca Elektronik GmbH | 87700 Memmingen | Germany | Fon [phone] | Fax [phone] | www.stecasolar.com
L = 130
H = 112
B = 88
AGZ
Accessories
Steca TA VM2
The TA VM2 flow rate measurement component al-
lows flow rate measurement of the water/water-gly-
col heat transfer fluid. A contact sensor (e.g. reed re-
lay) is used to send a pulse to the solar controller
(e.g. Suntana / Suntana 2 / TR 0603 / TR 0704) every time
a defined quantity of fluid passes through the system (e.
g. 10 litre = 1 pulse). At the same time, the controller de-
termines the temperature difference between the supply
and return temperatures and then calculates the quantity
of heat generated, by using this difference, the flow rate
and the specific material characteristics of the heat trans-
fer fluid. The heat volume calculated is then finally stored
in the controller and displayed as kWh.
Features
Nominal size: DN 20
Nominal flow rate Qn: 2.5 m³/h
Pulse rate: 10 l/Imp.
Maximum operating temperature: 120 °C
Operating pressure: up to 10 bar according to DIN
2401
Installation and connection dimensions according to
DIN ISO 4064
For horizontal and vertical installation
Hard-metal bearings up to 120 °C
Contact loading: 24 V (without series resistor)
Cable length: 3 m
Special features
This series is equipped with special hard-metal, dry-
running bearings for the through-flow paddle coun-
ter, it uses magnetic coupling and has been conceived
according to the latest technology.
To avoid disturbances caused by unclean water, only
the paddle wheel sits in the fluid path.
The roller counter is evacuated and sealed against
dust and water to avoid cracking the glass pane under
extreme temperature fluctuations.
The counter can be rotated for easier reading.
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Pressure loss curve
Flow rate [m3/h]
Pressure loss [bar]
1.0
0.5
0.3
0.2
0.1
0.05
0.03
0.02
0.01
0.1 0.2 0.3 0.4 0.5 1 2 3 4 5 6
Qn 2.5
L = 110
H = 112
B = 88
AGZ
Flow rate [m3/h]
Pressure loss [bar]
1.0
0.5
0.3
0.2
0.1
0.05
0.03
0.02
0.01
0.1 0.2 0.3 0.4 0.5 1 2 3 4 5 6
Qn 1.5
Flow meter
Pulse rate 1 l/pulse
Nominal diameter DN 15
Max. operating temperature Tmax 120 °C
Max. operating pressure PN 16 bar
Nominal flow Qn 1.5 m³/h
Max. flow Qmax 3 m³/h
Connecting threads on meter body according ISO 228/1 (AGZ - Inch) G ¾ B
Connecting threads of couplings according DIN 2999 (AGV - Inch) R ½
Length l 110 mm
Width w 88 mm
Height h 112 mm
Weight without couplings 0.8 kg
Steca TA VM1
The TA VM1 flow rate measurement component allows
flow rate measurement of the water/water-glycol heat
transfer fluid. A contact sensor (e.g. reed relay) is used to
send a pulse to the solar controller (e.g. Suntana / Sunta-
na 2 / TR 0603 / TR 0704) every time a defined quantity of
fluid passes through the system (e.g. 1 litre = 1 pulse). At
the same time, the controller determines the temperature
difference between the supply and return temperatures
and then calculates the quantity of heat generated, by
using this difference, the flow rate and the specific ma-
terial characteristics of the heat transfer fluid. The heat
volume calculated is then finally stored in the controller
and displayed as kWh.
Features
Nominal size: DN 15
Nominal flow rate Qn: 1.5 m³/h
Pulse rate: 1 l/Imp.
Maximum operating temperature: 120 °C
Operating pressure: up to 16 bar according to DIN
2401
Installation and connection dimensions according to
DIN ISO 4064
For horizontal and vertical installation
Hard-metal bearings up to 120 °C
Contact loading: 24 V (without series resistor)
Cable length: 3 m
Special features
This series is equipped with special hard-metal, dry-
running bearings for the through-flow paddle coun-
ter, it uses magnetic coupling and has been conceived
according to the latest technology.
To avoid disturbances caused by unclean water, only
the paddle wheel sits in the fluid path.
The roller counter is evacuated and sealed against
dust and water to avoid cracking the glass pane under
extreme temperature fluctuations.
The counter can be rotated for easier reading.
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Accessories
Pressure loss curve
Technical data Technical data