Teledyne GB-300 User Manual

Quick Start Guide for Model GB300 Portable Oxygen Analyzer

The Quick Start Guide describes the steps to successfully start, calibrate, a nd use the GB300 instrum ent.

REV 2

Components

The GB300 Portable Oxygen Analyzer includes:

• Instrument and carrying case

• I-17 sensor

• Sensor interconnection cable

• T adapter P/N A268

• Barbed hose adapter P/N F1717

• 3 AA batteries

• Quick Start Manual

Optional items:

• RS232 digital output

• Interface cable: 0-1 vdc P/N B75554

• Interface cable: RS232 P/N B75555

Set Up

Set up is simple:

1. Install the cable and sensor

2. Install 3 AA alkaline batteries.

3. Calibrate

Battery Installation

1. Hold the instrument face down.

2. Using a coin, gently twist to open the

hinged battery compartment door
latch.

3. Lift up door near latch and pull out.

4. Install 3 AA alkaline batteries

observing proper polarity.

Note: Use only alkaline batteries

Cable and Sensor Assembly

1. Insert the coiled cable connector into the right side of the instrument and secure the locking nut.

2. Remove the sensor from its protective package. Caution: If you see signs of moisture or liquid

in the protective bag do not open the package. Sensor contains caustic, which causes severe
burns and may be fatal if swallowed. The Material Safety Sheet can be found in the service
section of our web site at <www.teledyne-ai.com>

3. Connect the coiled cable to the sensor and secure the locking nut.

M-GB300-REV 2

Calibration

1. After installing the batteries and sensor the LCD will

read 00.0 and the battery indicator will show a full
charge with all bars activated. On initial start up with a
new sensor, allow the unit to stabilize for about 10
minutes before proceeding to the next step.

2. With the sensor exposed to room air or 100% oxygen,

press and hold the ON/OFF key down until the LCD
starts to count from 3 to 0. Release the key as soon as the
count starts and wait for the LCD to read 20.9 plus or
minus a few percent. Note: Holding ON/OFF key down
during the automatic calibration sequence will shut the
unit off when released. Excluding factors such as
temperature, humidity, and trace amounts of other gases,
the air we breathe contains 20.9% oxygen (calibration
point) and 79.1 % nitrogen. Subsequent calibrations
require that you first turn the unit on by pressing the ON/OFF key once. When the LCD
displays a value, press and hold the ON/OFF key until the LCD starts to count down as
noted above.

Gas Sampling

For flowing gas applications use the supplied adapter P/N C53790. When sampling, do not

pressurize the sensor as this will lead to incorrect readings. The sensor is a partial pressure device.
Any change in pressure from the calibration point will affect the reading.

Turning the Unit OFF

Press and release the ON/OFF key.

Specifications:

Range: 0-100% oxygen
Response time: 90% of final value in less than 10 seconds.
Sensor life: 36 months in air.
Battery life: Approximately 2000 hours.
Power: 3 AA alkaline batteries
Standard Output: 0-1 vdc.
Operating Temperature: 0-40 ˚C
Warranty: One (1) year against defects in material and workmanship.

M-GB300-REV 2