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Process Control Instrumentation, Field Devices and Industrial Automation



ControlSystemsUSA delivers comprehensive CEMS (Continuous Emission Monitoring Systems) integrations with PLC & SCADA based control systems, including data acquisition, logging, SCADA-supervised CEMS operation and automated generation of compliance reports.


  • Advanced, complex and custom CEMS functionality and communications.
  • Interface Design and Implementation.
    • Hard wired digital I/O & 4-20mA
    • Remote I/O: Modbus, DeviceNet, Profibus.
  • Integration with Allen-Bradley and Siemens PLCs.
  • Integrated Process and Operation Interlocks.
  • Integration with HMI/SCADA such as RSView, WinCC and Wonderware.
  • Integration with existing Alarm and History modules.
  • Remote Supervision and Advanced Diagnostics.
  • PLC controlled auto-calibration, drift test and blow-back.
  • Automated compliance data logging and reporting.
CEMS loop drawing
CEMS-PLC interconnection Loop Drawing

HMI snapshot of PLC-based CEMS auto-calibration
HMI snapshot of an Automated PLC driven Cylinder Gas Audit

CEMS integration with SCADA
SCADA/HMI Integration

CEMS compliance reports
Automated Emissions Compliance Report

CEMS Heater Probe
CEMS Heated Probe

Will you be buying a large quantity of items? or are you a Reseller or OEM? Please contact us and make sure you mention it to our specialist to discuss if we can offer you a discount.