OXYGEN DEFICIENCY MONITORS

Providing a Safer Working Environment

Purity offers the complete line of PureAire oxygen deficiency monitors and analyzers. 100% designed, built and tested in the USA, PureAire’s oxygen monitors are the highest quality and highest performing product on the market.

PureAire monitors utilize a zirconium oxygen sensor, instead of a consumable electro-chemical sensor which is often used by other manufacturers. Electro-chemical sensors typically require quarterly calibration by a skilled technician and require complete replacement every 12 months.

The zirconium sensor cell used by PureAire requires ZERO maintenance, calibration, adjustment, or testing for the entire working life span of 10+ years. The zirconium sensor operates flawlessly in 55°C to -40°C temperatures. There are no after-sale services or maintenance consumables required.

All PureAire oxygen monitors are configured for use, right out of the box. Simply supply power, turn on the unit, and within four minutes the device will begin sampling oxygen levels which can be read in real time on the digital display. All monitors are configured for connection to distributive control systems (DCS) and programmable logic controllers (PLC). The PureAire oxygen monitor can be operated remotely by as much as 1,000 meters from the centralized control systems, offering ultimate ease of use.

All Monitors Feature

  • 10+ years no calibration sensor
  • 3 year warranty
  • No maintenance required
  • Plug & play set up out of the box
  • Built in CPU
  • Built in 90dB audible alarm
  • Dual level, user selectable alarm relay
  • Digital display, 4-20 mA analog output
  • Connects to SCADA and PLC controls
  • Equipped with 110/220v plug-in power supply
  • UL, C UL and CE Approvals

Oxygen Monitors

Oxygen Deficiency Monitor

Item # 99016

The Air Check oxygen deficiency monitor is perfect for facilities using nitrogen, helium, and argon. The monitor is also suited for use in confined spaces, cryogenic facilities, and freezers.

Sampling Method Diffusion
Gases Detected Oxygen (O2)
Range 0 – 25 % O2
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 10 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output Dual Level Alarm Relay Contacts
Power Requirements 24 VDC 250 mA
Oxygen Monitor with Remote Sensor

Oxygen Deficiency Monitor with Remote Sensor

Item # 99028

This oxygen monitor has all of the same amazing features of our standard O2 deficiency monitor with the added feature of a remote sensor. This specification allows the sensor to be up to 10ft feet from the monitor, connected by a small wire. This is perfect for use in a freezer or unmanned area, where the sensor would be placed inside the area and you would be able to read the monitor outside at a safe distance. The wire can connect the sensor to the monitor right through a wall.

Sampling Method Diffusion
Gases Detected Oxygen (O2)
Range 0 – 25 % O2
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 10 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output, Dual User Selectable  Relays (2amp 30VDC/240VAC), Audible Horn
Power Requirements 24 VDC 250 mA
Dual O2/CO2 Monitor

Dual O2/CO2 Monitor

Item # 99039
This dual sensor monitor is designed for use in areas containing Helium, Argon, and/or Nitrogen, that contain CO2 as well. It includes all of the top of the line features of our standard oxygen deficiency monitor, though it monitors the level of CO2 in the room as well. It is ideal for use in environments such as breweries, beverage or other bottling plants, pharmaceutical manufacturing facilities, or grow rooms.
Sampling Method Diffusion
Gases Detected Oxygen (O2),
Carbon Dioxide (CO2)
Range 0 – 25 % O2
0 – 10,000ppm CO2
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell (O2)
NDIR (CO2)
Alarm Indicators Built-in Audible 90dB horn, Orange LED alarm indicator for CO2, Red LED alarm indicator for O2
Signal Outputs One user adjustable Alarm relay for Oxygen, One user adjustable Alarm relay for CO2. Relays are rated 2 amp 24VDC / 24VAC
Analog Output Analog 4-20mA output, selectable for either Oxygen or CO2. Optional 0-5 VDC output for CO2.
Power Requirements 24 VDC 350 mA
Sample Draw Oxygen Monitor

Sample Draw Oxygen Deficiency Monitor

Item # 99029
Our sample draw monitor is a specialized version of our standard oxygen deficiency monitor, perfect for situations where the monitor cannot physically be in the concerning area. The monitor can reside up to 100ft away from the area to be tested and uses a polyurethane or equivalent 1/4 inch tube to draw the sample. For a sterile environment, this monitor is the solution.
Sampling Method Sample Draw
Gases Detected Oxygen (O2)
Range 0 – 25%
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 10 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output, Dual Level Alarm Relay Contacts, Built in Horn
Power Requirements 24 VDC 300 mA
Water Resistant Oxygen Monitor

Water Resistant Oxygen Deficiency Monitor

Item # 99118

Our water resistant monitor is a specialized version of our standard oxygen deficiency monitor, perfect for situations where the monitor may be exposed to water or wash downs. For a sterile environment, this monitor is the solution.

Sampling Method Sample Draw for Splash Down Areas
Gases Detected Oxygen (O2)
Range 0 – 25%
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 10 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output, Dual Level Alarm Relay Contacts, Built in Horn
Power Requirements 24 VDC 300 mA
Explosion Proof Oxygen Monitor

Explosion Proof Oxygen Deficiency Monitor

Item # 99020

An explosion proof monitor is for use in environments that require Class I, div I, Group B,C,D, and div 2 Group E,F, G Enclosures. This monitor is specifically designed to not be a source of ignition. It is ideal for use in spaces with highly combustible gasses. This includes facilities that use blanketing with cryogenic gasses, including nitrogen, or facilities using high concentrations of oxygen. We can also adapt this monitor to be safe for use in class II environments upon request. This will be well suited for spaces with highly combustible dust or particles.

Sampling Method Sample Draw
Gases Detected Oxygen (O2)
Range 0 – 25%
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 10 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output, Dual Level Alarm Relay Contacts
Power Requirements 24 VDC 300 mA
Glove Box Oxygen Monitor

Glove Box Oxygen Monitor

Item # 99021

This is a specialized monitor for use in semiconductors, clean rooms, and laboratories using glove boxes or small chambers. Typically, the glove boxes are inert environments using nitrogen. The monitor can be used for low level oxygen readings of 5% or less. Instead of trying to maintain a breathable oxygen level, the goal is to monitor a low level in a maintained environment.

Sampling Method Diffusion
Gases Detected Oxygen (O2)
Range 0 – 25 % O2
Accuracy ± 1 % of Full Scale
Operating Temp -40 to +55 ºC
Sensor Type Long life zirconium oxide sensor cell
Sensor Life > 10 years under Normal Conditions
Signal Outputs 4-20 mA Analog Output Dual Level Alarm Relay Contacts
Power Requirements 24 VDC 250 mA
Oxygen Monitor for Vacuum 0-25%

Oxygen Analyzer 0-25%

Item # 99035

This is a specialized 0-25% monitor for use in a sealed environment such as a 3D printer, nitrogen sample line, nitrogen generator, cryogenic enclosure, or gas line. Our 10+ year zirconium oxide sensor can be mounted inside the sealed environment via supplied KF25 flange.

Sampling Method Diffusion (Supplied with KF 25 Vacuum Fitting)
Gases Detected Oxygen (O2) & 0-1000ppm Analyzer, please inquire for more details
Range 0 – 25 % O2
Accuracy ± 1 % of Reading
Operating Temp -40 to +50 ºC
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 24 VDC 250 mA
Trace Oxygen Analyzer 0-1000 ppm

Trace Oxygen Analyzer 0-1000 ppm

Item # 99097

This is a specialized 0-1000 ppm monitor for use in a sealed environment such as a 3D printer, nitrogen sample line, nitrogen generator, cryogenic enclosure, or gas line. Our 10+ year zirconium oxide sensor can be mounted inside the sealed environment via supplied KF25 flange.
Sampling Method Diffusion (Supplied with KF 25 Vacuum Fitting)
Gases Detected Oxygen (O2)
Range 0-1000ppm oxygen
Accuracy ± 1 % of Reading
Operating Temp -40 to +50 ºC
Sensor Type Long life zirconium oxide sensor cell
Signal Outputs 4-20 mA Analog Output Dual Level Alarm Relay Contacts
Power Requirements 24 VDC 250 mA

Accessories

Oxygen Monitor 110v power supply

110V Power Supply

Item # 45101

  • universal input (100~240 Vac)
  • single regulated output, 24 VDC, 1 Amp
  • short circuit protection
  • UL/cUL safety approvals
  • level V efficiency
Oxygen Monitor Remote LED horn & strobe alarm

Remote LED Horn & Strobe Alarm

Item # 42002

  • 24VDC (available in 18-30VDC)
  • Fully integrated xenon strobe circuit
  • Five dome colors Amber, Blue, Clear, Green, Red
  • Heavy duty ABS plastic body
    82-100dB @ 10′ (92-110dB @ 1m)
  • Type 4X, IP54
  • CE Compliant
Oxygen Monitor Remote LCD display

Remote Digital Display

Item # 99091

  • Bright 1” Red LED digital concentration display
  • Built-in Alarm and Fault status LED’s
  • User selectable dual level alarm set points
  • Built-in Audio horn alerts personnel to low or high oxygen conditions
  • Two tone horn distinguishes between alarm 1 and alarm 2
  • Displays Oxygen monitor overall status

PRODUCT INQUIRY