Met One Instruments GT-521S, Manual

Page: 9 / 30

GT-521S Manual Rev D Page 8
2.3. Default Settings
The GT-521S comes with the user settings configured as follows.
Parameter Value
Sizes 0.3 µm and 0.5 µm
Sample Location 1
Samples Single
Sample Time 60 seconds
Sample Hold Time 0 seconds
Volume (concentration) CF (particles/ft
3
)
Count Mode Normal (cumulative)
Temperature Units C
Baud Rate 9600
Serial Mode RS-232
Alarm Limits Disabled
2.4. Initial Operation
Before operating the GT-521S for the first time, it is recommended that the unit be fully
charged. Information regarding charging the battery is found in section 6 of this manual.
Complete the following steps to verify proper operation.
1. Slide the power switch up to turn on power.
2. Observe the Startup Screen for 2 seconds then the Operate Screen (Section
4.2).
3. Press Start / Stop key. The GT-521S will sample for 1 minute and stop.
4. Observe the counts on the display.
5. The unit is ready for use
3.
User Interface
The GT-521S user interface is composed of a 7 button keypad and a LCD display. The
following table describes keypad functionality. Note, some keys have more than one
function.
Key Description

Starts or stops a sample.

Starts the unit printing when in the Print Data Screen.

Recalls the selected data when in the Recall Data Screen.

Loads the Menu Screen when not editing a field.

Loads the Operate Screen when in the Menu Screen.

Cancels editing a field and return the field to the original value.

Loads the screen associated with menu item.

Begins editing of the selected item.

Stops editing a field and saves the changed value.

Navigates up/down when not editing (Menu).

Modifies field when editing.

Navigates right / left

Move through history buffer (Operate screen)
MENU
ESC
ENTER
STOP
START