Model 902P O₂ / CO₂ Analyzer

For Analysis of Oxygen & Carbon Dioxide In Process Applications

PRIORITY SERVICE AND SUPPORT
 
We provide the highest level of support and service to our customers. Technical support is readily available from our product support group via telephone, fax or E-Mail.

Parts and repair orders are usually processed on a “same day” basis to minimize analyzer down time.

Call (508) 839-3940, email us at sales@quantekinstruments.com, or fill our our brief application form with quote requests or questions.

The Model 902P is designed for continuous or spot check monitoring of O2 and CO2 levels in all types of processes, gas blending, biotech and other systems. The Model 902P is available with any range from 0 to 100% O2 and 0 to 1% up to 0 to 100% CO2 vol/vol full scale. Options include battery operation, analog outputs, internal sample pump and a sensors remotely mounted from the base unit. 

ABOUT THE SENSORS

The Model 902P uses a solid-state infrared CO2 sensor which has no moving parts, a compact optical cell, and microprocessor-based calibration factors using a 6th order polynomial equation to linearize the full range measurement up to 100%. Infrared CO2 measurements are inherently non-linear, especially over a high range of concentrations. The math algorithm used in the 902P yields more accurate results over a much wider range of concentrations than other methods.

Call (508) 839-3940 or email us with quote requests or questions.

> Bioreactors
> Gas Blending Systems
> Fruit Storage Areas
> Fermentation
> Welding Gases
> Controlled Atmosphere Rooms

> Carbon Capture and Storage

> Incubation Experiments

> ..... and Many More

The Model 902P CO2 sensor combines cutting edge 32-bit digital signal processing with the solid reliability, compact size and state of the art microprocessor technology that makes this full-featured CO2 measurement system less complex and more robust than other instrumentation.

The Model 902P uses a long-life heavy duty electrochemical O2 sensor, with an expected lifetime of 5 years.  Other electrochemical O2 sensors have an expected life of 1-2 years.

The expected life of the CO2 sensor is theoretically unlimited, as it contains no moving parts. 

Both the CO2 and O2 sensors are unaffected by high levels of background gases such as nitrogen.

ABOUT THE OPTIONAL INTERNAL PUMP

For those systems where a source of sample flow is not available, the Model 902P can be equipped with an optional internal miniature diaphragm pump with an on-off switch on the front panel, or the compact sensor head can be mounted directly in the system to be measured and connected via cable to the analyzer. In the latter case, sample diffuses into the sensor through port openings in the sensor body.

The rugged miniature diaphragm pump has electronically controlled timing function to operate only when sampling.  It provides high flow rate and long operating life.

The pump is electronically timed to draw in the amount of sample required for the analysis, and then turns itself off after the pre-set sampling time (5 to 10 seconds).

ABOUT THE MICROPROCESSOR/ELECTRONICS

Micro-processor based electronics provide sensor signal processing, battery charging, pump timing and on/off control for high accuracy and reliability with minimal component use and reduced size and cost.

ULTRA-VERSATILE SAMPLING

The sensor design is compact, has a low internal volume and requires only a low sample flow of about 5 to 1000 cc/min. The sample should be clean and dry (non-condensing).  Moisture or dirt deposits on the internal surfaces of the sensor can cause errors in the reading.  A disposable type particulate filter can be inserted in the sample line if needed.

Sample flows into the sensor through the front panel fitting and vents out through a port fitting on the back panel. The sensor operates at atmospheric pressure, and the accuracy of the measurement is not dependent on the flow rate of the sample gas. There are no restrictions in the sample cell, and samples introduced at slightly higher pressure will quickly equilibrate to atmospheric pressure.

SPECIFICATIONS

The sensor assembly is cable connected to the control circuit board. It can be used with diffusion or pumped sample draw systems.

ABOUT THE OPTIONAL BATTERY

With its low power requirement, the Model 906 can be operated with an optional battery for those applications where AC power is not readily available, or for convenience if spot checking samples at different locations. A totally sealed, long-life internal 12 Vdc gel battery accepts a full or partial charging cycle and will operate the unit for up to 8 hours. The charger module plugs into a standard 110-240V outlet for charging or continuous operation. Alternatively, the unit can be powered from an external 12-24 Vdc source.

ABOUT THE WARRANTY

The Model 902P is backed it up with a two year warranty, twice the industry standard. The advanced design allows an output requiring less frequent calibration. It provides a stable, drift-free linearized voltage or current output that is much less susceptible to external electro-magnetic interference than conventional analog electronics.
 

© 2012, Quantek Instrument, Inc., 183 Magill Drive, Grafton MA 01519            (508) 839-3940                sales@quantekinstruments.com