Oxyguard - Oxygen Depletion Monitor

Oxyguard – Oxygen Depletion Monitor

Oxyguard Economical, Maintenance-free Oxygen Depletion Monitoroguard

OXYGUARD® combines the economy of a galvanic cell with a highly efficient electrolyte for a virtually maintenance-free monitor with a sensor life of more than five years under normal conditions.

With OXYGUARD®, there is no influence from CO 2 ,CO,H 2 S, NO X ,SO 2 or H 2 . The monitor operates in normal ambient temperatures with a very stable output signal.

Simply install OXYGUARD® and it is ready to go to work. Warm-up time and field recalibration are minimal.

When you require continuous oxygen monitoring for refrigeration equipment, machinery rooms, medical imaging systems, oxygen incubators or food storage rooms,you can depend on the OXYGUARD® for effective, economical operation.


  • Simple installation
  • Easy field calibration
  • Audible alarm
  • Dual alarm capability
    Alarm 1:19.5%O2
    Alarm 2:16.0%O2
  • LCD shows %Oxygen, Alarm Test, Reset, Sensor Fault and Low Battery
  • Two flashing alarm LEDs
  • Sensor fault LED
  • Power on/off LED
  • Analog output for BAS/EMS interface or data logging
  • Two alarm relays for ventilation, dialer or remote notification
  • Alarm Test and Reset push buttons
  • Rugged ABS enclosure
  • Remote sensor with 6 ft.instrument cable and DIN plug, extendable to 200 ft.
  • Dependable, solid-state electronics

Options & Accessories

  • Remote sensor extension cable
  • Battery back-up
  • Gas test kit
  • Lockable enclosure


Technology Electro-chemical
Electrical Supply 115-230v, 50-60 Hz
Output Signal Std: 2x3A, dry contact
Opt: 0-10VDC or 4-20mA analog
Accuracy 1% Full-scale
Response Time <1 minute
Recovery Time <3 minutes
Sensor Life +5 years at 20°C/20% O2
Measuring Range 0-25% standard
Operating Temperature:
Sensor 40°F to +110°F non-condensing
Controller 0°F to +120°F non-condensing
Enclosure: ABS plastic, UL94V-0, NEMA 4/12/13 rated
Sensor PVC and porous PP filter
Weight 5 lbs. (add 4 lbs. for optional battery back-up)

Warranty (click for details)

Sensor element is unconditionally guaranteed for three years from the date of shipment. Any sensors found defective in that period will be replaced free of charge. Read terms and conditions of sale for complete warranty information.

Documents Available for Download (click for complete listing)

Thermal Gas Systems, Inc.

11285 Elkins Rd.
Bldg. H-1
Roswell GA 30076
Tel: 770 667-3865
Fax: 770 667-3857
Toll Free: 800 896-2996
Email: info@thermalgas.com

Give us a call!

Confused? Have questions?
Give us a call 800-896-2996 to discuss your specific application requirements.

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