Opens in a new tab

87 Gypsy Lane, Meriden, CT 06450

Toll Free: 1.800.864.2814

International: 203.935.0102

Toll Free: 1.800.864.2814

International: 203.935.0102

EPA PS-1 Continuous Opacity Monitoring Systems

EMS designs and manufactures dual-beam continuous opacity monitoring systems (COMS) for facilities that require reliable, continuous stack-opacity data and U.S. EPA Performance Specification 1 compliance. The EMS WatchDog PS-1 combines rugged optical hardware with automatic zero and span functions, real-time diagnostics and an intuitive 5.7-inch color touchscreen.

The WatchDog PS-1 meets or exceeds 40 CFR Part 60, Appendix B, Performance Specification 1 and ASTM D6216. Since 1990, Environmental Monitor Service has supplied opacity monitors, startup, certification, audit testing, repair and technical support for power generation, paper, cement, incineration and other regulated industrial applications.

WatchDog PS 1 System

EMS WatchDog PS-1

  • 40 CFR 60 PS-1 and ASTM D 6216 Compliant
  • Meets PS-11 Requirements
  • RS485, Modbus Communication, Optional Ethernet and Wireless
  • Dual-Beam Measurement
  • Lifetime LED Source Replacement Warranty
  • Intuitively Designed 5.7″ Color Touchscreen User Interface
  • 5 Numeric Display Screens and 3 Trend Display Choices
  • Real-Time Diagnostics for Testing Outputs and Relays
  • Automatic or Manual Online Calibration
  • Easy-to-Read Color-Coded Fault Screen
  • User Display Customization Available
  • Optional Premium Controller

Contact EMS for help selecting an opacity monitoring system and remaining compliant with applicable environmental requirements.

Opacity Monitoring Resources