PLC SHIFT
GAS FLOW
API Compliant Gas Flow Computer with AGA3 and AGA8 2017 Part 2. Includes hourly and daily history, event and alarms log and QTR.
GAS FLOW is a full featured, API compliant natural gas flow computer app for PLC SHIFT. Accurate and reliable measurement is critical for custody transfer and precise process control. Reliable measurement requires auditability to ensure accuracy.
Key Features
AGA3 (1992 and 2013)
EFM with Orifice meter and multivariable transmitter
AGA7
EFM with Turbine meter or other volumetric meter
AGA8 2017 Part 1 and 2
Compressibilty and density calculations including GERG 2008. GERG 2008 is an extended equation of state calculation covering the gas phase, liquid phase, supercritical region, and vapor–liquid equilibrium states.
CFX File Generation and Export Automatic Daily FLOWCAL CFX File generation and export. Store locally and export to Azure Blob Storage.
Compliant with API MPMS 21.1 and 21.2 and AER Directive 17
Double precision float accuracy
Daily, Hourly and minute history logs
Configuration change logs
EFM Event log
EFM Alarm log
QTR (Quantity Transaction Record)
Direct polling of multivariable via Modbus
Modern and Secure Access Control via SSH
Flow Computer Accuracy Testing and Validation
Algorithms and accumulations are validated against industry standard test cases
Read more about flow computer accuracy in the Reference Manual
Well Testing
Combine with PLC Shift Liquid Flow to solve complex measurement requirements such as Well Testing. Read more about the PLC Shift Well Testing solution.
Protocol and Application Support
Allen Bradley Ethernet/IP
Tag data and UDT via connected PLC
ModbusTCP
Tag data via connected PLC
Modbus Master
Poll data from multivariable transmitters using ModbusTCP, Modbus RTU in TCP, or Modbus RTU
MQTT SparkplugB
Report by Exception tag data with history and tabular data
Azure Event Hub
Stream tag data to Azure for real-time anaytics
Azure Table Storage
Export tabular data from the app to Azure
Daily, Hourly and Minute History
QTR History
EFM Alarm, Event and Configuration change log
App diagnostic logs
SSH
Secure Shell for User Access Control
Ignition SCADA
Requires Cirrus Link MQTT Software including Cirrus Link MQTT Recorder Module
SCADA system - MQTT Software for IIoT - Cirrus Link Solutions (cirrus-link.com)
PLC SHIFT Features
Configuration, management and operations tool
Azure Event Hub Export
Stream tag data to Azure Event Hub and enable real-time analytics
MQTT SparkplugB Export
Export tag and historical data via MQTT SparkplugB to SCADA, Historians and more.
Secure Connections
Modern security and encrytion methods such as SSH and TLS for user access and data connectivity