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Electronic Volume Corrector - EVC

An EVC measures and corrects gas volumes for accurate billing.

Electronic Volume Corrector - EVC

Overview of the Electronic Volume Corrector (EVC)

EVC – Electronic Volume Corrector is used to calculate the Corrected volume of gas that has passed through the gas flow meter. Electronic volume correctors take the incoming pulse signal from a gas meter and also record the local pressure and temperature and then different algorithms are applied (S-GERG88, AGA8, NX-19 etc.) for calculation of the compressibility to calculate the Corrected volume of gas that has passed through the gas flow meter. Hardware is designed for a potentially explosive environment in ATEX ZONE 0, 1 and 2. To comply with ATEX we have to make sure that it cannot be a source of ignition as this will be in an area where the Gas is always present and could lead to an explosion.

The following are the features of the device:

Communication:

  • Isolated RS232/RS485 Interface
  • Integrated Modem for GSM, GPRS, 4G LTE support.
  • Optical UART Interface through Optical Head.

Inputs / Outputs:

  • Pressure Sensor Input
  • Temperature Sensor Input
  • 2x Encoder Inputs (Namur Encoder/ SCR+ Encoder/ Pulse Encoder )
  • 3x digital outputs (low-frequency pulse, binary)

Delivered Services

System Architecture
PCB Design
Software Development
Testing

Product Features

Isolated RS232/RS485 Interface – Ensures secure and reliable communication, crucial for data exchange within hazardous industrial environments.

Integrated Modem (GSM, GPRS, 4G LTE) – Provides versatile connectivity options to facilitate real-time monitoring and efficient data transmission from remote locations.

Optical UART Interface through Optical Head – Allows for direct, onsite data communications without electrical interference.

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