System Overview; Base Unit Description; Components Description - Maxtec MaxO2 OM-25A Operating Manual & Instructions For Use

1.0 SYSTEM OVERVIEW

1.1 Base Unit Description

The MAXO analyzer (Model OM-25A) provides unparalleled performance
®
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and reliability, due to an advanced design that includes the
following features and operational benefits.
» Fast-responding, oxygen-specific, galvanic sensor that achieves 90% of
final value in approximately 15 seconds at room temperature.
» Extra-life oxygen sensor of approximately 1,500,000 O2 percent hours
(minimum 2 years in most applications).
» Adaptable sample input connection and internal sensor.
» Operation using 2 AA alkaline batteries (2 x 1.5 volts) for approximately
3000 hours of performance in typical usage. For extra extended long life,
2 AA lithium batteries may be used.
» Durable, compact case that permits comfortable, hand-held operation.
» Large, easy-to-read, 3 1/2-digit LCD display for readings in the 0-100%
range.
» Simple operation and calibration using quick-calibrate key functions.
» Self-diagnostic check of analog and microprocessor circuitry.
» Low battery indication.
1.2 Components Description (please refer to page IV)
LCD Readout
A
1 3 1/2-Digit Display- The 3 1/2-digit liquid crystal display (LCD) provides
direct readout of oxygen concentrations in the range of 0-100%. It also
displays "CAL" when the calibration mode is entered.
2 "%" Sign- The percent sign indicates when the unit is locked or
unlocked and when the unit is calibrating.
3 Low Battery Indicator- The low battery indicator appears on the LCD
display when the power supply voltage drops below acceptable limits.
When the "LOW BAT" icon is visible, batteries should be replaced
immediately.
Keypad
B
4 ON/OFF Key-
5 LOCK/UNLOCK Key-
readout is an indication that the unit is in its normal "LOCKED" state.
Pressing the LOCK key will unlock the keypad and cause the "%" sign to
disappear. If no other keys are pressed within 10 seconds, the "%" sign
will reappear and the unit will revert to the "LOCKED" mode.
6 CALIBRATE Key-
is used in conjunction with the up and down keys to calibrate the
device.
This key is used to turn the instrument on or off.
When the keypad is unlocked, the CAL key
866.4.Maxtec
The presence of the "%" sign on the LCD
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