Service and Documents

EMS employs highly-skilled service engineers who perform both in-house and field service. Our service engineers have traveled throughout the world and consistently provide professional, courteous service on all EMS equipment as well as many other manufacturers’ equipment. EMS has set the industry standard for customer satisfaction, quick turnaround, and reasonable prices.

For added convenience, service can be scheduled to work around planned shutdowns. Please contact our service department for more information or to schedule a service.

In-House Service

  • Opacity Monitor Repair
  • System Overhaul
  • Factory Re-Certification
  • ND Filter Sales & Certification

Field Service

  • Quarterly & Yearly PS-1 Testing & Reporting
  • On-Site Repair
  • Opacity Monitor Startup Service
  • Opacity Monitor Field Certification
  • Preventative Maintenance
  • Procedure 3 Required Off-Stack Zero

Factory/Field Service & Replacement Is Available for the Following

  • Durag Opacity Monitors
  • Preferred Opacity Monitors
  • Light Hawk Opacity Monitors
  • Phoenix Instruments Opacity Monitors
  • Teledyne Opacity Monitors
  • USI Opacity Monitors
  • Rosemount Opacity Monitors
  • Fireye Opacity Monitors
  • Land Opacity Monitors
  • Datatest Opacity Monitors
  • Dynatron Opacity Monitors
  • Others



EMS Product Overview

Data Sheets

Off Stack Test Kit Data Sheet

EMS WatchDog 800 Data Sheet

EMS WatchDog Data Sheet

EMS WatchDog PS-1 Data Sheet


Please contact for information regarding our manuals.

Contact us in Meriden, Connecticut, when you are in need of any of our helpful services, including opacity monitor repairs.