Frequently Asked Questions

We are opacity monitoring experts. Opacity, sometimes referred to as COMS (continuous opacity monitoring system) or visual emissions, is usually an EPA mandated measurement for a source owner (boiler plant, waste incinerator, foundry, cement plant, lime kiln, etc.) to comply with. It is usually only installed to meet a compliance requirement, however, if installed and maintained correctly, it can be utilized to improve process efficiency (i.e., less smoke implies a cleaner, more efficient, burn). We do the following:

  • new analyzer installations,
  • site certifications (EPA compliance),
  • new purchase recommendations,
  • monthly EPA audits, quarterly EPA audits, annual EPA audits, and
  • EPA Method 9 visual emissions monitoring.

We also work on CEMS (continuous emissions monitoring system). Our capabilities include:

  • new system installations,
  • site certifications (EPA compliance),
  • new purchase recommendations,
  • quarterly, annual PMs (preventive maintenance),
  • quarterly CGAs (cylinder gas audits),
  • complete sample handling repair, PMs, etc.,
    • includes probe, heated sample line (HSL), gas conditioning, filtration, sample pump, peristaltic pump, pressure control items, flow control items, exhausts, drains, electrical, cabinet HVAC, lighting

We do circuit board repair including surface mount repairs.

We do telephone technical assistance on just about anything.


Yes, RIGAS still supports the Rosemount OPM-2000 series even though it is discontinued by the original manufacturer. We have parts (new & certified reconditioned). We have technical expertise. We provide depot or on-site services for this analyzer. The oldest of the series, the OPM-2000, released in 1989, is still very serviceable! Please call for more information (330-345-5264).

There are two answers to this: [1] call RIGAS and obtain a RMA (return material authorization) number; we will verify that we are capable of working on this board or instrument based on availability of parts. The RMA number provides you with a job tracking number for your valuable item(s). --- Or --- [2] just send us your item; upon receipt, we'll call you to let you know that it arrived and what our repair (RMA) number is for that item(s). 330-345-5264 or 877-616-0600.

The RIGAS office is open from 8AM until 5PM. But our phones are answered 24/7/365; just listen to the telephone prompts and select "Call the on-duty technician" if you need technical help ASAP. 877-616-0600 or 330-345-5264

We are located in Wooster, Ohio, USA. Our mailing address and shipping address is:


2310 East Hutton Road

Wooster, OH 44691

Here is a link to our location on MapQuest:

P.S., Wooster is named after Revolutionary War General David Wooster (1711-1777); we also claim to be the birthplace of the American Christmas tree tradition (see Encyclopedia Britannica).

The easy answer is to just call us 330-345-5264 or 877-616-0600, and we'll schedule a qualified technician to drive or fly to your location.