Oxygen analysers PPM measuremen Model 221R Tekhne Vietnam

The Model 221R offers a complete state-of-the-art solution for Oxygen Deficiency Monitoring.

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 guarantee unmatched stability and performance over a wide temperature range of 0º to 130º 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 1 minute and only needs to be performed every 6 months.

Given the remarkable stability over an extreme temperature range, complete electronics package, and a compact water tight NEMA 4X enclosure, the Model 221R is a perfect fit for a wide range of applications, including: clean room, control rooms, confined spaces, refrigerator/freezer, and applications that are susceptible to routine hose down requirements.

• Single range measurement: 0-25%,
• Optional measurement ranges available
• 0-2.5VDC analog output or optional 4-20mA. output
• Remarkably stable 10-year life zirconium oxide sensor
• Great low cost OEM solution for system integration
• General Purpose Area Classification
• Optional display/calibration module