WatchGas NEO User manual

Quick Start Guide
D e t e c t i on
NEO Photo-ionization Detector

Warnings
Read Before Operating
The NEO’s User’s Guide must be carefully read by all
individuals who have or will have the responsibility
of using, maintaining or servicing this product. The
product will perform as designed only if it is used,
maintained and serviced in accordance with the
manufacturer’s instructions.
CAUTION
• Change battery only in an area known to be non-hazardous.
• Use only WatchGas mPower battery pack PN: M011-3002-000.
ATTENTION
• Changez la batterie uniquement dans une zone connue pour
être non dangereuse.
• Utiliser uniquement la batterie WatchGas mPower PN: M011-
3002-000.
WARNING
• Never operate the monitor when the cover is removed.
• Remove the monitor cover only in area known to be non-
hazardous.
• Use only WatchGas sensor and accessories. Substitution of
components will impair suitability for intrinsic safety and void
warranty.
• It is recommended to bump test with a known concentration
gas to conrm the instrument functions properly before use.
• For maximum safety, the accuracy of the instrument should be
checked by exposing it to a known concentration calibration
gas before each day’s use.
• When replacing batteries, dispose of old ones properly.
• To achieve the optimal test results, it is recommended to
preheat the unit for 2 minutes after entering the test interface
• Ensure that the water-trap lter is clean & replaced regularly.
• Don’t remove the sensor. Zero and span calibration is required
once the sensor is moved.
• Before use, ensure that the colorless ESD layer on the display
is not damaged or peeling. (The blue protective lm may be
removed.)

User Interface
The user interface has four-key operation, one big
LCD with LED backlight, four red alarm LEDs, and one
buzzer.
AVERTISSEMENT
• N’utilisez jamais le moniteur lorsque le couvercle est enlevé.
• Retirer le couvercle du moniteur et la batterie uniquement
dans une zone connue comme non dangereuse.
• La substitution de composants compromettra l’aptitude à la
sécurité intrinsèque et annulera la garantie.
• Il est recommandé de tester avec un gaz de concentration
connu pour conrmer que l’instrument fonctionne
correctement avant de l’utiliser.
• Avant l’utilisation, assurez-vous que la couche ESD incolore de
l’écran n’est pas endommagée ou épluchée. (Le lm protecteur
bleu peut être enlevé.)

Turning the unit On
Press the Down Key for 3 seconds, until the buzzer
beeps and the red LED ashes. After a warm up and
self-test sequence, the unit enters normal reading
mode, showing real time gas concentrations.
Turning the unit O
In normal reading mode, press and hold the Down
Key for a 5-second count down, until“Unit O”is
displayed.
Charging
Always fully charge the battery before use. Plug the
charger to the bottom of NEO. The battery icon on the
LCD shows the charge status. During active charging,
the icon cycles from empty to full.
Charging/Comm Cable
The USB Charging/Communications cable allows
charging the unit on a personal computer. A local-
ly-purchased cable can work as well for charging, but
a WatchGas mPower cable must be used for proper
data transfer when communicating with mPower
Suite.
Water-trap Filter
Water-trap lters (P/N: M490-0004-010) are used to
protect the sensor from dust and aerosols in dirty en-
vironments. The lter should be twisted on to the gas
inlet before the instrument is used and replaced once
its surface is dirty.

Testing the alarms
Important! Test the alarms prior to performing a
bump or span calibration test. If any alarm does not
respond, check the Alarm Settings in Cong Mode to
make sure all alarms are enabled (Cong Mode › Alm
Setting › Alarm Settings › Both Enabled). If any alarms
are enabled but are not functional, do not use the
instrument. Under normal operation mode and non-
alarm conditions, the buzzer, LED and backlight can
be tested anytime by pressing the Right Key once.
Normal Mode
After warm-up is complete, the unit enters normal
reading mode and displays the instantaneous gas
concentration continuously.
Other values like STEL, TWA,
and temperature, etc. can be
checked by pressing the Up/
Down Key to cycle through
these screens one by one.
Conguration Mode
In Cong Mode, the user can perform a sensor
calibration, change the alarm limits and set up other
parameters.

Enter/Exit Cong Mode
Press and hold the Up and Down Keys together for 3
seconds, to enter Cong Mode.
• The Cong Mode is password protected.
• The default password is“0000”.
• After all four digits are entered, move the cursor
to √and press the Up Key to enter cong mode.
• Press the Left Key to exit Cong Mode.
Cong Mode Menu
• Calibration:
• Zero Calib, Span Calib, Set Cal.Gas, Set Span Value,
Set Span 2 Value
• Meas.:
Measurement Unit, Measurement Gas
• Alm Setting:
Alarm Limits, Alarm Mode, Alarm Settings,
Comfort Beep, Man Down Alarm
• Datalog:
Clear Datalog, Interval
• Mnt (Monitor) Setup:
Data & Time, Display, Pump Speed, Pump Stall,
3-Point Cal., Rolling Graph, Real Time Data,
Language, Self-Zeroing
• Wireless:
Radio On/O

Zero Calibration
Zero calibration sets the baseline for the sensor and is
done in normal fresh air or other clean air source.
• To enter fresh air calibration:
Cong Mode › Calibration › Zero Calib.
• To start fresh air calibration:
Press the Right Key and a count-down timer
starts. When the count-down is nished,“Pass”or
“Fail” will be displayed. To abort the zero calibrati-
on use the Left Key during count down.
Span Calibration
Span calibration denes the response of the sensor to
the gas. It is done with a known concentration gas.
• To enter span calibration:
Cong Mode › Calibration › Span Calib
• To start span calibration:
Apply Gas › Start Calibration ›Wait Count-down
Finish › Get Result.

Gas Selection
Span calibration is usually done with isobutylene.
To correct the response to be accurate for another
gas:
Cong Mode › Measure › Gas Library
Scroll the gas list and select the desired gas, then
press Left to save and exit.
Maintenance and Service
Replace the inlet water trap lter on a regular basis,
especially when used in dusty environments.
For battery, lamp, or sensor replacement and other
maintenance refer to the User Manual or contact the
service department of WatchGas.