Thông số kỹ thuật
Type | VZF(A) II | ||||||||
Nominal diameter | DN mm inch | 15 1/2 | 20 3/4 | 25 1 | 40 1 1/2 | 50 2 | |||
Installation length | mm | 165 | 165 | 190 | 300 | 350 | |||
Nominal pressure | |||||||||
-threaded ends | PN bar | 16 | 16 | 16 | 16 | 16 | |||
-flanges | PN bar | 25 | 25 | 25 | 25 | 25 | |||
Max. medium temperature | Tmax | °C | 130, 180 | ||||||
Maximum flow rate | Qmax | l/h | 600 | 1500 | 3000 | 9000 | 30000 | ||
Continuous flow rate | Qcont | l/h | 400 | 1000 | 2000 | 6000 | 20000 | ||
Minimum flow rate | Qmin | l/h | 20 | 40 | 75 | 225 | 750 | ||
Approx. starting flow rate | l/h | 4 | 12 | 30 | 90 | 300 | |||
Max. permissible error | <±1 %, (A) ±0.5 % of actual value | ||||||||
Repeatability | ±0.2 %, (A) ±0.1 % | ||||||||
Measuring chamber volume | approx. | cm3 | 12 | 36 | 100 | 330 | 1200 | ||
Safety filter mesh size | mm | 0.400 | 0.400 | 0.400 | 0.800 | 0.800 | |||
Dirt filter max. mesh size | mm | 0.100 | 0.100 | 0.250 | 0.250 | 0.250 | |||
Housing finish | enameled red RAL 3013 | ||||||||
Weight with: | |||||||||
-threaded ends | approx. | kg | 2.2 | 2.5 | 4.2 | 17.3 | - | ||
- flanges PN 25 | approx. | kg | 3.8 | 4.5 | 7.5 | 20.3 | 41.0 | ||
Smallest readable amount | |||||||||
Total volume | l, m3, G | Up to 3 decimal places (dynamic) | |||||||
Total mass | kg, t, lb | Up to 3 decimal places (dynamic) | |||||||
Digital flow rate display | (l, G, m3, | Up to 3 decimal places (dynamic) | |||||||
Registration capacity | l, m3, G | 8 digits | |||||||
Registration time until overrun | Qcont | >100 years | |||||||
Outputs | |||||||||
Three | freely selectable outputs are available, totally independent of each other | ||||||||
Pulse value for totalizer | volume or mass pulse 0…200 pulse/sec. (50 % duty cycle) | ||||||||
Current 4…20 mA for flowrate | volume flow, mass flow or temperature signal to 4…20 mA | ||||||||
Frequency for flow | volume flow, mass flow or temperature signal to frequency 0…200 Hz (50 % duty cycle) | ||||||||
Limiting switch | Qmin, | minimum, maximum and hysteresis parameterized | |||||||
State switch | Alarm, error state and on/off parameterized |