C-Squared Oxygen Analyzer User Manual

C-Squared Inc. 1440 S State College Blvd, Unit 4L, Anaheim, CA 92806

Tel: [phone], Fax: [phone], [e-mail], www.c-squaredinc.com

Introduction

The C-Squared Oxygen Analyzer is designed to measure oxygen levels in the 0.1 to 100.0%
range. It can be used to measure the oxygen content for mixes used in Diving, Medical
Instrumentation and Industrial applications. The Analyzer is designed to be able to verify
oxygen concentration in cylinders as well as analyze delivery systems.

The C-Squared Analyzer has a digital display, an internally or externally mounted temperature
compensated sensor with a 2 year life expectancy. The power is supplied by three AAA 1.5
volt batteries.
The case has an environmentally sealed, potentiometer, on/off/on with back light switch, long
life sensor and digital panel meter. The Analyzer is water resistant and sealed to prevent
moisture from affecting the internal components.

The Analyzer is shipped in a high impact case that can be used for storage or other purposes.
The Analyzer is ready to use out of the box with no additional work other than checking on the
calibration either in air (20.9%), or 100% O2.

Controls

The C-Squared Oxygen Analyzer has a splash proof on/off/on (with back light). When the
switch is centered it is in the off position. When not in use, the switch should be in the off
position to conserve battery life. When the switch is in the up position it is on. When the
switch is flipped down, the switch is in the on position with the panel meter back light activated.
The back light option should only be used in limited light conditions to extend the life of the
batteries.

When switched on, the analyzer’s display will indicate an oxygen reading. Please note that the
analyzer must be calibrated prior to use (see calibration section).

The low battery warning is a battery symbol in the left corner of the display. When present
change the batteries prior to using the analyzer.

The display has a 0.1% resolution and is sealed. It also can be backlit (controlled via the
on/off switch).

Incorporated

Oxygen Analyzer

Instruction Manual

Oxygen Analyzer Instruction Manual Page 2

C-Squared Inc. 1440 S State College Blvd, Unit 4L, Anaheim, CA 92806

Tel: [phone], Fax: [phone], [e-mail], www.c-squaredinc.com

Air Calibration:

Calibration is essential prior to every use. For oxygen mixtures above 50% oxygen always
calibrate in 100% oxygen before use. This assures minimum deviation and greatest accuracy.

For regular use expose the analyzer to clean room air and adjust the calibration knob until the
display reads 20.9%.

The analyzer is now ready for oxygen measurement.

WARNING:
The analyzer is sensitive to oxygen partial pressure. Calibration must always be carried
out at the same pressure as the oxygen measurement.

Oxygen Calibration:

Obtain the 100% oxygen from a certified Distributor and measure the gas using a 100 ml to
500 ml per minute flow rate. Be sure to allow the reading to stabilize.

Operation:

The Oxygen Analyzer comes complete with a sensor flow cap/restrictor that allows you to read
directly from a cylinder valve. For the external sensor Oxygen Analyzer the sensor cable plugs
into the right side of the Analyzer and has a secured mini-phone jack that connects to the
sensor securely.

You should check the calibration with 100% oxygen periodically and adjust as necessary. If for
any reason the Analyzer does not calibrate within specifications the oxygen sensor should be