The flow sensors of Type 200 are based on the principle of the Kármán vortex street. The vortex flow sensors are free of moving parts, making them resistant to contamination. They are also characterized by a low pressure drop and high measurement accuracy. Optional variants with an integrated temperature sensor are available.
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Low-cost product with very good accuracy
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Temperature-insensitive measuring principle
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Excellent media resistance (measuring element without media contact)
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Wider operating temperature range
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Low pressure loss
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Dirt-insensitive measuring element
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Temperature measurement directly in the medium optionally with PT1000 or NTC
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Drinking water approvals KTW, W270, ACS, WRAS
General Features
|
Flow measurement principle |
Vortex flow rate |
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Measuring range flow rate Overview |
0.5 ... 150 l/min |
|
Nominal width |
6; 8; 10; 15; 20; 25 |
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Accuracy < 50 % measuring range end value Water |
<1 %FS
|
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Accuracy > 50 % measuring range end value Water |
<2 % (Measured value) |
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Switch-on Delay |
<100 ms (Immediate response time; can be used for tapping operation) |
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Response Time |
>5 ms |
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Temperature measuring principle |
PT1000; NTC10k |
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Temperature measuring range |
-40 ... 125 °C |
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Sensor Weight |
44; 46; 57; 68; 92; 100 g |
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Repeatability |
±0.5% |
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Sensor Type |
Flow sensor, optionally with temperature measurement |
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Measuring range flow rate |
0,5 ... 150 l/min |
Temperature Measurement
| Accuracy ΔT referred to 0 °C |
±0,3K ± 0,005 · ΔT (Class B DIN EN 60751) |
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Accuracy @ T < 25 ºC |
±0.7 °C ± 0.025 ΔT25 °C (NTC 10 kΩ @ 25 ºC) |
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Accuracy @ T > 25 ºC |
±0.7 °C ± 0.025 ΔT25 °C (β = 4050) |
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Influence Self-heating temperature sensor |
1 K/mW |
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Influence Conduction resistance to connector |
0,8 Ohm |
Field of application
| Media
|
Heating water with standard additives; Drinking water; Other media on request |
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Medium temperature |
-15 ... 125 °C (Non-freezing media) |
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Maximum test pressure at 40 °C media temperature |
18 bar |
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Cavitation |
>5,5 (Equation for avoiding cavitation: P abs outlet / P difference) |
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Maximum system pressure media temperature up to 90 °C |
7 bar |
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Maximum pressure impact resistance at 90 °C media temperature |
On request |
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Recommended minimum system pressure |
1 bar |
Material
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Sensor paddle with media contact |
ETFE |
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Housing with media contact |
PA6T/6I (40 % glass fibre) |
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Sealing material with media contact |
FKM; EPDM (perox.) |
Electrical Data
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Supply Voltage |
5 VDC (±5%) |
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Output flow rate |
Frequency square wave signal (< 0.1 ... > 4.75 V @ UIN = 5 VDC; Q; UOUT_Q_Frequency) |
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Temperature Output |
PT1000 (PT1000 Class B DIN EN 60751); NTC10k (NTC 10 kΩ @ 25 ºC; β = 4050) |
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Electrical Connection |
RAST 2.5 connector; Connector RAST 2.54; M12x1 connector |
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IP protection class |
IP 20; IP 65 |
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Load/burden |
> 10 kΩ / < 10 nF (against GND or IN) |
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Current consumption |
<6 mA (Standard); <10 mA (increased noise immunity) |
Approval
|
EMC compatibility |
according to EN 61326-2-3 (without protection against surge) |
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Drinking water |
Plastic parts with KTW and W270 approval; WRAS; ACS |