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D e t e c t i o n
User Manual
Photo-ionization detector NEO
D e t e c t i o n
19
Date
The date is expressed as Month/Day/Year, with two digits for each. To change
the date press the Up or Mode key to increase or decrease each digit’s value, and
the Right or Left key to move the cursor. Move the cursor to ‘√’ after the setting is
complete, and press Up to save and exit.
Time
The Time is expressed as Hours/Minutes/Seconds, with two digits for each. The
time is in 24-hour (military) format. Adjust the time in the same manner as for the
date.
Display
The Display function is used to set LCD contrast and backlight.
LCD Contrast
The default LCD Contrast is about 50%.
To change the contrast, press the Up or Mode key to increase or decrease the digit’s value, then move the
cursor to ‘√’ and press Up to save and exit.
Backlight
The Backlight can be set as Automatic, Manual or Off. In Automatic Mode the backlight comes on and
stays on in low light conditions. In Manual Mode, pressing the Right or Left key turns the backlight on for
one minute.
Pump Speed
The pump can operate at three speeds, low, medium and high, ranging from about 250 to 350cc/min
with a standard 0.45 μm filter in place, or about 350 to 450 cc/min with the filter removed. Running at
low speed is quieter and conserves a small amount of power. There is almost no difference in sampling
accuracy. High pump speed is recommended for faster response when using an extension hose to
sample, or when measuring heavy compounds, which tend to have slow response because of adsorption
on inlet surfaces.
Use the Right key to enter Pump Speed, then Up or Mode to scroll on the list, Right to select, and Left to
save and exit. Note that each Pump Speed has its own Stall Threshold.
