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Last Updates: 24/10/2020
Brands:Contrec

Contrec 515 – GN11 Natural Gas Flow Computer

Part Number: 515 – GN11 Categories: ,

Email Us: sales@celectric.com.my
WhatsApp Us: +60165519084

Contrec 515 Series with GN11 application measures the volume, mass and gross heat content of natural gas. The instrument uses a frequency volume flow input and analogue temperature and pressure sensor inputs.

The instrument is compatible with a wide range of flowmeter frequency outputs. Millivolt signals, reed switches, Namur proximity switches or pulse trains can be selected via its smart front-panel programming.

The SGERG calculation (AGA-8 Detail Characterization Method) is used to obtain accurate values of density and compressibility factors for the flow calculations.

CALCULATIONS

The gas density and compressibility factor calculations are based on the SGERG (AGA-8 Gross) equations. The calculations are valid for the region:

-8.0°C < t < 62.0°C P < 12MPa

17°F < t < 143.0°F P < 1740psia

FORMULAS

Mflow = volume flow• ρflow

corrected flow = Mflow/ρ ref

Heat flow = Mflow•Hm

Where:

Mflow = mass flow

ρflow = density at flow conditions

ρ ref = density at reference conditions

Hm = mass gross heating value

Product Highlights

  • Uses SGERG (AGA-8 Gross Method) Natural Gas compressibility calculations
  • For Natural and Coke-Oven Gases
  • Allows quadrature flow input for ISO 6551 level B pulse security
  • Allows for non-linear correction
  • Selection of second language and user tags
  • RTC logging with over 1000 entries
  • Infra-red communications port on front panel
  • Pulse width and scaling of pulse output
  • 4-20mA retransmission
  • Selectable protocols on serial ports including Modbus RTU and Printer output
  • Front panel adjustment of 8-24V DC output voltage
  • Backlit Display
  • LCD Backup

Datasheet:  Contrec 515 – GN11 Datasheet

Instruction Manual: Contrec 515 – GN11 Instruction Manual

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