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PureAire Explosion Proof Oxygen Monitor with 10+ Year Sensor 99020
Product Summary
The AirCheck Explosion Proof Oxygen Deficiency Monitor is perfect for facilities that use inert gases including, but not limited to, nitrogen, helium, and argon. The enclosure is specifically designed to prevent the ignition of an explosion. The monitor is well suited for environments such as corn and grain processing facilities, powder coating plants, and the oil and gas industry where combustible dust, and ignitable fibers are present. The monitor will remain accurate at temperatures as -40C. PureAire’s durable, non-depleting, zirconium oxide sensor will last up to 10+ years in a normal environment needing to be replaced.
Also available in Class II dust configurations. Contact PureAire for details.
Features
- Suitable for Class 1, Div 2 Group B, C, D and Class 2, Div 2 E, F, G
- Long-life 10+ year average sensor life
- Two-alarm setpoints for 19.5% and 18.0%
- No maintenance required
- 3-year warranty
- Digital display, 4-20mA analog output
- No Drift due to thunderstorms or barometric pressure changes
- Wall mounting brackets
- Built-in flow sample pump up to 100ft
- CE, UL, and C UL approval
The Explosion Proof Oxygen Monitor offers long-lasting O2 deficiency detection. PureAire’s oxygen monitors are designed to be reliable, affordable, low maintenance, and provides continuous monitoring for an average of 10 years and more.
Ideal for use in electrically classified locations, confined spaces, analyzer shelters, petrochemical plants, cryogenic gas storage, and locations requiring remote sampling. The EX oxygen monitor can detect leaks of inert gases such as nitrogen, helium, and argon. The explosion-proof oxygen monitor can detect gas leaks at temperatures as low as -40C.
The monitor features an easy-to-read local display, visual LED’s, and audible alarm. The oxygen monitor can be linked to fire alarm systems for notification of all employees.
The zirconia sensor is not sensitive to temperature, humidity, or barometric pressure changes (including thunderstorms). Unlike other oxygen monitors, replacement sensors are not required, since we use a zirconium sensor, rather than a disposable electrochemical sensor lasting 1-2 years on average. “Supervised watchdog,” software runs 24/7 checking electronics and components. Any errors or inconsistencies are reported on the display.
By installing PureAire’s explosion-proof oxygen monitor, you can save as much as $400 annually and reduce the time-intensive cycle of replacing sensors.
Specifications
| Sampling Method | Sample Draw |
| Range | 0 – 25 % |
| Accuracy | ± 1% of full scale |
| Operating Temperature | -40 to +55 ºC |
| Display | 3/4” backlit digital display |
| 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 |
| Dimensions | 266.7 x 190.5 x 177.8 mm 10.5(W) x 7.5 (H) x 7.0 (D) inches |
| Weight | 16 lb 7.3 kg |
| Enclosure | Explosion-proof Class 1, Div 1, Group B C and D |
| Required Calibration | None No Zero or Span Pot Adjustment Required |
| Country of Origin | USA |
| Harmonized Tariff Code | 8531.10.0045 |
Advantages
Connects to DCS and PLC Controls
Powered by a 24VDC battery, the Explosion Proof Oxygen Monitor continually checks oxygen concentration levels and relays information to the distributive control system, PureAire's single or multichannel controllers, or a programmable logic controller. The Explosion Proof Oxygen Monitor can be operated remotely over a 0.6 mile or 1,000-meter radius.
Improved Oxygen Sensor Cell
Rather than the electrochemical sensor used by most companies, PureAire uses a current limiting zirconium oxide sensor. This sensor runs reliably without a reference gas, so it can be used in all-nitrogen environments. The earth provides calibrated oxygen. When everything is at an ambient state, the sensor is challenged by approximately 20.9 percent oxygen. PureAire's Explosion Proof Oxygen Monitor checks 0 to 100 percent oxygen levels and can operate at a lower temperature than the competition while needing no calibration. No maintenance is required to use the sensor; however, you may wish to subject it to nitrogen to test its response periodically.
Features of the Explosion Proof Oxygen Monitor
PureAire's Explosion Proof Oxygen Monitor comes with several configurations. All units have a built-in CPU and a low-cost, basic display-only monitor. For additional capabilities, a full-featured dual-level monitor is available. The unit features built-in alarm relays and an air check program that monitors sample flow, sensor cell, and electronics. For full transparency, fault information is transmitted to the alarm relay, front panel LED, and mA output.All returns must be authorized by Spectra Services in order to insure proper credit and must be requested within 30 days of purchase. All returns are subject to a minimum 15% restocking charge. For returns not due to error on behalf of Spectra Services, the customer is responsible for all transportation fees related to the returned product. To ensure proper credit, each product return must include the following information:
- Customer name and address
- Purchase order number
- Spectra Services shipping order number
- Date of invoice
- Item number of returned item(s)
- Spectra Services return authorization number (RMA)
- Reason for return
Non-Returnable Goods
Unfortunately, Spectra Services is unable to accept the following returns at this time:
- Products not in completely resalable condition (including products with damaged, missing, or defaced labeling or packaging
- Chemicals, reagents, diagnostics, sterile, or any controlled products (unless products do not meet specification
- Laboratory apparatus or instruments that have been used or are without the original packaging, labeling and operating manuals
- Refrigerated products or other perishables
- Products which are not inventoried by Spectra Services and are not able to be returned to the manufacturer
- Products purchased on a special order
- Products not purchased from Spectra Services
- Products with an expired shelf life or an expiration date too short for resale
- Discontinued products
Spectra Services reserves the right to review this policy on a case-by-case basis.
Pre-Owned Products
Upon receipt of the pre-owned product(s), the customer has one week to evaluate the product to ensure it meets their expectations. If for some reason the customer decides to return the product, they may do so at any point during those seven (7) days for a full refund. No restocking fee will be assessed, however, the customer is responsible for the return shipping costs. Full credit will be issued upon receipt and inspection of the item(s) to ensure equipment was returned in the same condition it was initially shipped out in.
Important Information
All exchanges and returns require the completion of a Return Merchandise Authorization (RMA) form. Once completed, please return the merchandise immediately as the RMA number is only active for ten (10) days from the date of issuance.
Charges associated with returning items are the responsibility of the customer unless the item(s) arrived defective, damaged, or incorrect.
Spectra Services highly recommends that return packages be insured for full value and packaged securely to prevent shipping damage.
We're Here To Help
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Order Questions:
If you need help or have any other questions concerning your orders, please click on the "Contact us" form above or call: 800-955-7732.
249 David Parkway
Ontario, NY 14519 US
Phone: 800-955-7732
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Do you accept international orders?
Of course! While we require a bank wire prior to shipment of the product on international orders, we assure you that the process is just as smooth for domestic orders. Take a look at our International Shipping Policy and contact us if we can assist.
Will I be charged for shipping?
Shipping charges will be added to your invoice unless you provide us with your UPS, DHL, or FedEx account number. For a more detailed insight into our shipping process, see our shipping information page.
I received a damaged shipment. What can I do?
Accidental damage during shipment can sometimes happen. When you take delivery of your freight, please inspect thoroughly for any visible damage to the outside of the shipping container before signing for it. If there are multiple pieces to the shipment, please account for all them. Should you find that any of the products are damaged or missing after receipt, contact us within three days to address the matter.
I'd like to make a return. How do I do that?
Take a look at our Return Policy, and then contact us to continue with the process. Let us know if you have any questions.
Can you guarantee pricing and availability?
While we attempt to list and provide you the most up-to-date pricing, we reserve the right to make changes. Additionally, we cannot guarantee that we will always have a product in stock, but we do our best to accommodate your needs. If you have questions regarding pricing or availability, please do not hesitate to ask.
Can you explain where you come up with the 'List Price,' please?
Our "List Price" represents the full retail price as suggested by the supplier or manufacturer, the price estimated based on comparable items offered elsewhere in the marketplace, a former price the item was offered for by Spectra Services, or the price estimated in accordance with industry standards. Please note that we do our best to provide accurate list prices, and that it may vary by geographic location.
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