ENMET QUADRANT User Manual

Page 11

QUADRANT

ENMET Corporation

Display

An LCD upon which either the gas concentrations or prompts for the
operational and maintenance menus are given.

Pressure buttons – There are four as follows:

• ON/OFF, the upper most button when the instrument is held upright

with the display facing the user

• Enter/Backlight, the second button
• + (advance), the third button
• – (reverse), the lower most button (this button is only used for

maintenance)

Backlight

The backlight is activated by pressing the Enter/lBacklight button. It
activates, and stays on for two minutes in the operation menu. When the
maintenance menu is entered the backlight activates and stays on
continuously.

Visual alarm There are two general alarm LEDs on either side of the LCD. Each sensor

has its own alarm LED below the LCD. For example, if an oxygen alarm
occurs, the general alarm LEDs activate as well as the oxygen sensor
alarm LED.

Audio alarm The audio alarm activates under any alarm condition. Fault alarms are

steady tones. Gas alarms are pulsating.

2.1 Operation menu
A flow chart of the QUADRANT menus are shown in Figure 2 and 3 on pages 2 and 3.
The operation menu is the portion from the scrolling display to the Code password.

2.1.1 Scrolling Display
From the scrolling display, pressing the + button allows the user to view time and date,
battery information, minimum and maximum gas concentrations detected, and STEL and
TWA values. It also provides the entrance to the maintenance menu, which should be
accessed only by personnel performing calibration or maintenance functions. Press the
Enter/Backlight button anywhere in the Operation Menu to return to the normal scrolling
display of gas concentrations.

2.1.2 Optional Software
When optional maintenance software COM 2000 is used and the location option is
activated, the + and – buttons also allow the operator to view location stamps for data
logged into memory.

2.2 Maintenance menus
Auto-Zero

or Auto-set is for resetting displays to 0 ppm toxic, 0 %LEL combustible
and 20.9% for the oxygen