ANALYZER INSTALLATION
CAUTION:
The MODEL 221R is designed for operation between 41°F to 104°F.
•It is highly recommended that the Oxygen Deficiency Monitor be installed close to the potential
leak source, most likely to be the cause of oxygen depletion
•The zirconium oxide sensor is located on the right side of the box. Make sure that this side is properly
orientated to the potential source of oxygen depletion.
•The Oxygen Deficiency Monitor is designed to be mounted in a general-purpose area. Do not install
it in a hazardous area containing flammable gases.
•It is recommended that you purchase the optional power cord with your unit. This will allow you to
unplug and move the unit to an area with fresh ambient air when scheduled calibration needs to be
performed. Note: The unit is also designed to be hard-wired if that is your preference
•Analyzer must be connected to a solid ground for the highest level of RFI protection and safety.
•Use 18 to 16 gauge wire for your electrical connections.
Key Points:
CAUTION:
Ventilation Requirements:
Install the unit near the area where the oxygen levels need to be monitored. Leave a gap of at
least 12” around all faces of the unit’s case. (Note: This gap does not include the unit’s backside).
CAUTION:
The MODEL 221R is designed for monitoring of atmospheric air. Use of the unit to monitor
process gas will shorten the life of the zirconium oxide sensor and void the warranty.
ANALYZER ENGINEERING DRAWING
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