Product category: Application Specific Accessories
Our standard Model 221R is outfitted with a complete package of electronic features and utilizes a very accurate and reliable 10-year life zirconium oxide sensor. This combination provides unmatched stability and is virtually maintenance free over its entire life.
Competitive models generally suffer from undesirable stability issues causing frequent and expensive false/nuisance alarms. The undesirable drift usually results from just slight ambient temperature change or the unavoidable decline in electrochemical sensor outputs. Our innovative engineering and sensor technology guarantees unmatched stability and performance over a wide temperature range of 0-130 degrees F, thereby eliminating costly nuisance alarm issues.
Our sensor requires no support gases and can be easily and accurately calibrated using compressed air. A standard calibration takes approximately one minute and only needs to be performed every six months.Given the remarkable stability over an extreme temperature range, complete electronics package and compact watertight NEMA 4X enclosure, the Model 221R is a perfect fit for a wide range of applications, including: clean rooms, control rooms, confined spaces, refrigerator/freezers, and applications that are susceptible to routine hose down requirements.
The Model 221R is a rugged piece of safety equipment designed for industrial applications.