Alarm Settings - WatchGas NEO User Manual

NEO
Photo-ionization Detector
5.5.2 MEASUREMENT GAS
Measurement gases are organized in two lists:
• Gas Library is a pre-set list that contains about 700 chemicals detectable by PID.
• Custom Gases are user-defined, using WatchGas Suite to set up all gas parameters,
including the name, span value(s), correction factor(s), and default alarm limits.
Press the Right key
OK
Ent Esc
Mode key to scroll through the gas list. For high-speed scrolling, press and hold the
Up key until the desired gas name is reached. Press the Right key
OK
Ent Esc
gas and the Left key

5.6 ALARM SETTINGS

During each measurement period, the gas concentration is
compared with the programmed alarm limits (Low, High, TWA
and STEL). If the concentration exceeds any of the preset
limits, the loud buzzer and red flashing LED are activated
immediately to warn of the alarm condition. Press the
Ent Esc
Right key to enter the Alarm Setting menu.
5.6.1 ALARM LIMITS
In this menu, the High, Low, STEL,
and the TWA alarm limits can
be changed. Press the
18
OK
Ent Esc
to select Gas Library, or Custom Gases. Press the Up key
OK
Ent Esc
to save and exit.
OK
Description
Unit
ppm Parts per million
ppb Parts per billion
mg/m3 Milligrams per cubic meter
µg/m3 Micrograms per cubic
meter
µmol/ Micromole per mol
mol
10-6 Per million
or
OK
Ent Esc
OK
Ent Esc
to select the