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
• Optical UART Interface through Optical Head

Inputs / Outputs:

• Temperature and Pressure Sensor Input
• 2x Encoder Inputs (Namur / SCR+ / Pulse)
• 4x Digital Inputs and 4x Digital Outputs
• 2.4 inch 240×120 Display with Keypad Input
• 4x Analogue Inputs 4-20mA (Optional)
• IP66 Rated and ATEX Certified Enclosure