Over 40 Years of CEMS Expertise
CEMSOURCE (formerly part of Campbell-Sevey, Inc.) provides industry leading continuous emission measurement products and solutions for a wide variety of industries including power generation, manufacturing, biomedical, and agriculture. As a manufacturers’ rep of Teledyne Monitor Labs products for over 40 years, we have the expertise to provide outstanding auditing, parts, repair and service.
CEMSOURCE Leadership

Brian Ross
President/Sales
CEMSOURCE is led by Brian Ross, former President of Campbell-Sevey, Inc. Brian brings his vast experience in providing solutions to the steam, air and water along with 43 years of direct experience with CEMS. He understands the value of accurate data to ensure compliance with federal, state and local emission requirements and knows what solutions work best to meet your needs

Bob Bohlken
Vice-President/Service
Bob Bohlken has been servicing CEMS products and analyzers for 40 years, most recently as Service Manager at Campbell-Sevey. Bob heads our team of Service Technicians to ensure high performance during maintenance checks, audits, service and repair.