Cookie Notice

This online store uses cookies to remember users, enable checkout and to collect aggregate information that allows us to analyze traffic patterns on our site (no personal information is stored). For more information you can read our Privacy Policy.

Gas Leak and Flame Detectors, Analyzers, Alarm Devices and Calibration Gas


$2,051.45     Availability: In Stock
 Info/Quote Request
 Shipping Rates
 Volume discount

PUREAIRE 99035 (1)

PureAire TX-1100-KF25 O2 Oxygen 0-25% ( Optional Trace Oxygen 0-1000 ppm, 0-95% ) Deficiency Monitor (Diffusion) for Vacuum chamber. Zirconium cell. Includes KF25 flange, digital LCD display, 4-20mA output and Power Supply (110V). Polycarbonate enclosure. CE and UL Listed.

Part# with Options:        99035
Price with Options:        2,051.45


(1) Range for PureAire TX-1100-KF25
Power Supply
(2) Power Supply for PureAire AirCheck O2 (220V)
Horn and Strobe Combo
(3) Horn and Strobe Combo for PureAire AirCheck O2
Remote Display
(4) Remote Display for PureAire AirCheck O2

  Availability In Stock  ]

  • Operates in 300 torr vacuum
  • KF-25 flange connector
  • No maintenance Zirconium cell
  • No calibration required
  • 3 year warranty
  • No drift to environmental or
  • temperature changes
  • 10 + year Sensor life
  • Local digital display, 4-20mA output
  • Joystick adjustable dual alarm relays
  • Integral computer controlled electronics
  • C UL listed Measuring Equipment E363306
  • Ce approved EMC EN 61326-1:2006 / EN 61010-1-3-2013 LVD

The Air check O2 Deficiency Monitor is a compact gas monitoring system that’s ideal for the continuous monitoring of gas lines, 3D printers, nitrogen gas compressors, vacuum chambers and locations where low oxygen levels need to be monitored. Unlike electrochemical sensor cells, the Air check O2 zirconium cell provides stable oxygen readings even in areas where temperature and humidity levels are changing. And, the Air check O2 is one of the only monitors suitable for monitoring directly in a vacuum.

The heart of the monitoring system is a long lasting zirconium sensor, which detects low oxygen conditions within seconds and provides accurate measurements over a wide temperature and humidity range. The zirconium O2 sensor cell will operate continuously for 10 or more years and requires an absolute minimum of maintenance. There are no zero or span calibration pots to adjust and when compared to disposable type sensors, our long life zirconium O2 sensor can save up to $475 annually and will pay for itself in just over 3 years!

The Air check unique sensor mounts directly into chambers or load locks through the use of a KF type vacuum fitting. Monitoring oxygen directly eliminates the need to change the environment back to ambient and can improve thru put. The Air check O2 Deficiency Monitor also provides stable readings even in areas that contain high electro-magnetic fields.

Connects to DCS and PLC Controls

The Air check O2 Deficiency Monitor is 24VDC powered and transmits continuous oxygen concentration levels to any distributive control system or programmable logic controller.

PureAire’s Oxygen Sensor Cell

The Air check O2 Deficiency Monitor uses an exclusive Current Limiting Zirconium Oxide Oxygen sensor that never requires a reference gas. Unlike concentration type zirconium cells that must have a reference gas, PureAire’s O2 monitor can operate in 100% nitrogen environments. Capable of detecting 0% up to 25% oxygen levels, the current limiting O2 sensor operates at a lower temperature than competitive concentration type cells. The average life of PureAire’s O2 sensor is over 10 years in most environments.

The Air check O2 Deficiency Monitor never needs calibration. The earth is a wonderful source of calibrated oxygen and under ambient levels, PureAire’s O2 monitor is continuously being challenged to 20.9%. There are no zero or span adjustments to make; the only optional response test required is to subject the O2 system to nitrogen periodically.

O2 Monitor System Features

The Air check O2 Deficiency Monitor is available in many different configurations. PureAire uses a sophisticated built-in CPU that is flexible to provide users with a low cost basic display only monitor or a full featured monitor with dual level, user selectable alarm relays.

Range 0-1000 ppm Oxygen Analyzer
Sampling Method Diffusion (Supplied with KF 25 Vacuum Fitting)
Accuracy ± 1% of reading
Operating Temperature -40 to +50 ºC
Vacuum range 300 torr, 0.4 atm
Display 3⁄4” backlit LCD digital display, 3 Alarm LED’s
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 8 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output
Dual Level Alarm Relay Contacts
Power Requirements 24VDC
Dimensions 5.0 (W) x 5.5 (H) x 3.25 (D) inches; (127 x 140 x 83 mm)
Weight 2 lb (0.9 kg)
5.5 kg
Enclosure Polycarbonate
Required Calibration None (no zero or span pots supplied)
C UL Listed Measuring Equipment E363306
CE EN 61000-3-2:2006 EMC, EN 61000-3-3:2008 EMC, EN61010-1-3-2013 LVD

B2B Checkout Options: Designated Carrier and Tax-Exempt purchase
Payment Options: Credit Card, Credit Card Over the Phone, PAYPAL, Wire Transfer and Check

Checkout with Paypal Visa MasterCard Amex Checkout with Wire Transfer Electronic Payment

> OXYGEN LONG LIFE :    2 Items found.


PureAire TX-1100-DRAP Air check O2 Oxygen Deficiency Monitor (Diffusion) for Glove Box and Chambers. Zirconium cell. Includes digital LCD display, 4-20mA output and Power Supply (110V). Nema 4X enclosure. CE and UL Listed.




PureAire TX-1100-SAM Air check O2 Sample Draw Monitor with zirconium cell. Includes digital display, 4-20mA output and Power Supply (110V). Nema 4X wall mount enclosure. Indoor or outdoor use. CE and UL Listed.