ATEX approved Gas Flow meters – Models VA570
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- No moveable parts, no wear
- Sensor tip very robust, easy to clean
- Housing rotatable, display rotatable by 180°
- For Velocities up to 224 Nm/s
- Media temperature range up to 180 °C (ATEX version up to 120 °C)
- Maximum pressure 16 bar, up to 40 bar in the PN 40 special version
- Can be used from DN15 to DN 80
- Highly accurate with an Accuracy of ±1.5% or ±1% of Measured value, as well as ±0.3% of final value
- 04…20 mA, pulse and a Modbus RTU (RS 485) interface as standard, optional interfaces such as two galvanically isolated analogue outputs (04…20 mA), Modbus TCP (Ethernet), PoE, M-Bus
- Protection class IP 67 (IP 64 for ATEX II 2D Ex tb IIIC T90°C Db)
- Integrated display for showing the Measured values
- Settings can be changed using the buttons on the Display
- Main counter reading can be reset via the Display
Features:
- Measuring the mass flow, direct output of the Standardised volume flow possible without additional measurement of Pressure and Temperature
- All wetted parts of the VA 570 are made of stainless steel, especially for applications with high demands on purity and surface quality
- The Robust aluminium housing is ideal for harsh industrial conditions as well as outdoor installations
- No moving parts, therefore Low maintenance
- Disappearingly low pressure loss, as the blockage of the diameter is negligible
- ATEX or DVGW certification available, therefore recommended for gases such as Natural gas, hydrogen, Biogas, etc.
- Highly accurate for both small and large flows
- Pressure and temperature-compensated thanks to the thermal mass flow principle
- Easy installation and removal of the sensor from the measuring section, the measuring section can remain in the line for cleaning or recalibration of the sensor and can simply be closed with a cap
Specs
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Product Specification
Below is the product specification of the ATEX approved Gas Flow meters – Models VA570 from CS Instruments. If you require further information, please contact our expert customer service advisors on 01722 442 307.
Measuring range VA 570:
up to 50 Nm/s, low-speed version* up to 92.7 Nm/s, standard version* up to 185 Nm/s, max. version* up to 224 Nm/s, high-speed version*
*Measuring range Nm3/h for different pipe diameters and gases, see table measuring ranges flow.
*All measured values related to DIN 1343 standard conditions 0° and 1013 mbar ex works
Accuracy:
Accuracy class (o. M. V. = of measured value)
(o. F. S. = of full scale)
± 1.5% of m.v. ± 0.3 % of f.s. on request:
± 1.0% of m.v. ± 0.3 % of f.s.
Accuracy indications:
relative to ambient temperature 22 °C ± 2 °C, system pressure 6 bar
Repeatability:
0.25% of m.v. in case of correct mounting (mounting aid, position, inlet section)
Measuring principle:
Thermal mass flow sensor
Response time:
t90 < 3 s
Operating / ambient temperature range:
-20…70°C
Media temperature range:
-20 °C …. 180 °C
(ATEX version: -20°C … 120 °C)
Adjustment possibilities via display, external hand-held device PI 500, PC Service Software, remote diagnosis:
Nm³/h, Nm³/min, Nl/min, l/s, ft/min, cfm, kg/h, kg/min, inner diameter, reference conditions ° C/° F, mbar/ hPa, zero point correction, leak flow volume suppression, scaling analogue output 4…20 mA, pulse/alarm, error codes etc.
Outputs:
Standard: 1 x 4…20 mA analogue output (not electrically isolated), pulse output, RS 485 (Modbus-RTU)
Optional: 2 x 4 … 20 mA active, Modbus TCP, HART, Profibus DP, Profinet, M-Bus, IO-Link
Burden:
< 500ohm
Additional average value calculation:
for all parameters freely adjustable from 1 minute up to 1 day, e. g. 1/2 hours average value, average day value
Protection class:
IP 67
IP 64 for ATEX II 2D Ex tb IIIC T90°C Db
Material:
Die-cast aluminum housing, sensor tube stainless steel 1.4404
Operating pressure:
16 bar, in special version 40 bar
Power supply:
18…36 VDC, 5 W
Approval:
ATEX II 2G Ex db IIC T4 Gb
ATEX II 2D Ex tb IIIC T90°C Db DVGW