Industrial gas flow meter for critical applications — VA 570

Description

The new VA 570 gas flow meters use the thermal anemometric measurement principle. Thanks to this, no additional temperature and pressure measurements are required.

Due to its reliable design, cast aluminum housing, and durable sensor made of stainless steel 1.4571, the new VA 570 gas flow meter is suitable for critical industrial applications. The ATEX version of the device can be used in explosive environments. For measuring flow, for example, of natural gas, a version of the flow meter with DVGW approvals is available.

Unlike the previously used bridge circuit, the new electronics record data digitally. This has increased measurement accuracy and reduced response time over a wide temperature range up to 180°C. The wide dynamic range of 1…1000 allows measurement at both very low and very high gas flow velocities (up to 224 m/s).

The VA 570 is equipped with a Modbus interface as a standard output signal, allowing transmission of parameters such as Nm³/h, Nm³, Nm/s, Nl/min, Nl/s, kg/h, kg/min, ft/min, °C, etc. All parameters can be configured directly (from the display), as well as using the PI 500 handheld device or Service Software. Additionally, the device has 2 analog output signals 4...20 mA for flow and temperature, as well as a galvanically isolated pulse output for transmitting accumulated gas flow data.

Remote diagnostics of the device can be performed via Modbus, allowing verification and, if necessary, modification of all significant parameters. For example, if operating conditions change, it is possible to adjust gas type values, internal pipeline diameter, scaling, zero point, or disable air leak compensation.

The VA 570 is supplied with an integrated measuring section. Measuring sections are available in flange versions or with R or NPT threads. A feature of the device is the removable measuring part. The measuring module can be extracted for calibration or cleaning without dismantling the entire flow meter. After removing the measuring part, the opening in the section can be closed with a protective cap (accessory). The guiding lug ensures precise installation of the measuring part relative to the flow. This helps prevent loss of accuracy.