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)