Technical data
VA 570 English V1.19
Page 8 of 44
4 Technical data
Measures:
mass flow, consumption
flow speed, temperature
Measuring principle:
thermal mass flow sensor
Medium temperature range:
-40 ... 180°C Probe (ATEX-Version -2
0°C … 120°C)
Operating temperature range:
-20 ... 70 °C
Operating pressure:
50 bar
Power supply:
18 … 36 VDC
Optional:
PoE according to IEEE 802.3af, PD Class 2 (max.
6.5W), voltage from 36V to 57V DC
Power consumption:
max. 5W
Output:
Modbus RTU (acc. EIA/TIA-485 Standard)
2 x 4...20 mA active (optional passive) RL < 500Ohm
galvanically isolated pulse (Pulse weight freely selectable,
Alarm max. 48Vdc 0,5A (Relay: Normally Closed)
optional: Modbus TCP, HART, Profibus DP, Profinet,
Accuracy:
± 1.5 % m.v. ± 0.3 % f.s.
Standard version*
(m.v. of meas. value)
(f.s. of full scale)
Accuracy:
± 1.0 % m.v. ± 0.3 % f.s.
Precision version*
(m.v. of meas. value)
(f.s. of full scale)
Repeatability :
0.25% m.v in case of correct mounting (mounting aid,
position, inlet section
Accuracy indications:
referred to ambient temperature
22°C +/-2°C, system
pressure 6bar
Response time:
t90 < 3s
Display:
2
“ TFT Color Display (320 x 240)
Screw in thread:
G 1/2“ ISO 228, NPT 1/2“, R 1/2“, PT 1/2“
Material:
Housing aluminum die cast,
probe stainless steel1,4571
Protection class
IP67
* Reference conditions for Temperature and pressure can be freely set, standard conditions are 0 ° and 1013 mbar.
