WatchGas NEO MP181 User manual

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NEO Photo-ionization Detector
User Manual
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Detection NEO Photo-ionization detector User Manual
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Contents
Contents 2
Description 3
Warning 3
Caution 3
1 Product Overview 4
2 Display 4
3 Charging a Lithium-ion Battery 5
3.1 Low Voltage Warning 5
3.2 Clock Battery 6
3.3 Data Protection While Power is O 6
4 Instrument Operation 6
5 Basic User Mode 6
5.1 Turning The Instrument On 6
5.2 Turning The Instrument O 7
5.3 User Mode Summary 7
5.4 Integrated Sampling Pump 7
5.4.1 Pump Status 8
5.5 External Water-trap Filters 8
5.6 Alarm Signals 8
5.6.1 Alarm Signal Summary 8
5.6.2 Preset Alarm Limits & Calibration 8
5.6,3 Testing the alarms 9
5.7 Backlight 9
5.8 Datalogging 9
5.9 Man Down 9
5.10 Wireless 9
6 Conguration Mode 10
6.1 Navigating Cong Mode 10
6.1.1 Selection From a List 10
6.1.2 Entering Numerical Values 10
6.2 Entering en exiting conguration mode 11
6.3 Conguration Mode Menus 11
6.3.1 Calibration 13
6.3.2 Measurement 15
6.3.3 Alarm Setting 16
6.3.4 Datalog 18
6.3.5 Monitor (MNT) Setup 18
7 Computer Interface Using mPower Suite 11
7.1 Connecting And Conguring 22
7.2 Datalog Reviel 23
8 Maintanance 24
8.1 Lamp Cleaning Or Changing 24
8.2 Sensor Cleaning 24
9 Troubleshooting 25
10 Specications 26
11 Limited Warranty 27

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Description
The NEO is one of the most advanced handheld VOC (Volatile Organic Compound) monitors available
for ppb (parts per billion) detection. The NEO oers several models from the most sensitive 1 ppb
to a high range up to 15000 ppm for dierent applications and user selections. Novel designs of the
photo-ionization detector (PID) and ultraviolet (UV) lamp provide outstanding sensitivity, stability
and reproducibility. Options include real time data monitoring with a built-in wireless modem using
mPower Suite application software.
Warning
This manual 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, main-
tained, and serviced in accordance with the manufacturer’s instructions. The user should understand
how to set the correct parameters and interpret the obtained results.
• Use only WatchGas mPower battery pack M011-3002-000. Substitution of components may impair
intrinsic safety. Recharge batteries only in non-hazardous locations.
• Do not mix old and new batteries or batteries from dierent manufacturers.
• 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.
• Do not use USB/PC communication in a hazardous location.
• Static Hazard: Clean only with a damp cloth.
• For safety reasons, this equipment must be operated and serviced by qualied personnel only.
Read and understand the instruction manual completely before operating or servicing.
Caution
• To reduce the risk of electric shock, turn the power o before removing the instrument cover.
Disconnect the battery before removing sensor module for service. Never operate the instrument
when the cover is removed. Remove instrument cover and sensor module only in an area known to
be non-hazardous.

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2. Display
The LCD display provides visual feedback that includes the reading, pump, Man Down, time, battery
condition, and other functions. The display shows the following information:
1. Product Overview
The instrument’s user interface consists of the
LCD display, Alarm LEDs, an alarm transducer,
and four keys. The keys are:
Esc
Ent
OK
Esc
Ent
OK
EscEnt
OK
EscEnt
OK
Left key
Right Key
Up Key
Down/Mode Key
INLET FILTER
LCD DISPLAY
GAS OUTLET
UP KEY
LCD DISPLAY
SENSOR CAP
ALARM LEDS
RIGHT KEY
MOVE CURSOR
BUZZER
MAN DOWN
STATUS
PUMP STATUS
CALIBRATION/
BUMP DUE
BATTERY STATUS
DATALOG STATUS
REDING AND
CONCENTRATION UNIT
LAMP STATUS
TIME
GAS NAME AN D
CORRECTION FACTOR
TEMPERATURE
LCD DISPLAY

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3.Charging a Lithium-Ion Battery
Always fully charge the battery before using the instrument. The screen will display a battery icon from
empty (no bars) to fully charged (3 bars). Follow this procedure to charge the instrument:
1. Plug the Micro-USB into the charging port at the bottom of the instrument.
2. Plug the USB connector* into either a) a personal computer, or b) into the AC/DC adapter and plug
the AC/DC adapter into the wall outlet.
The instrument begins charging automatically. The charging LED turns red to indicate charging.
During charging, the 3 bars in the battery icon on the instrument’s display are animated. When
the battery is fully charged, the LED turns green, the icon is no longer animated and shows a full
battery, and the message ‘Fully Charged’is displayed.
*NOTE: Any locally-obtained USB A to Micro B USB cable will work for charging, but will not work for
communication with mPower Suite conguration and data transfer software. The WatchGas mPower
USB cable P/N M-011-3003-000 is required for a PC to recognize the instrument and communicate
with mPower Suite.
Item Description
Gas information Shows the measurement gas and its correction factor
Reading Concentration of gas measured by the instrument
Calibration/Bump Due Indicates if calibration or bump status is OK or not
Pump Status Indicates whether the pump is working or blocked
Man Down Status Indicates if Man Down alarm is on
Lamp Status Indicates if the lamp is on or not
Datalog Status Indicates whether datalog is on or o
Battery Status Indicates battery capacity in 3 bars
Time Indicates current time
Temperature Indicates current temperature
Warning
To reduce the risk of ignition of hazardous atmospheres, recharge and replace batteries only
in areas known to be non-hazardous. Use only WatchGas mPower’s rechargeable lithium
battery part number: M011-3002-000.
3.1 LOW VOLTAGE WARNING
When the battery’s charge falls below a preset voltage, the instrument warns you by beeping
once and ashing once every minute, and the“empty battery” icon blinks on and o once per
second. Turn o the instrument within 10 minutes and either recharge the battery, or replace the
battery with a fresh one with a full charge.

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3.2 CLOCK BATTERY
An internal clock battery is mounted on one of the instrument’s printed circuit boards. This long-life
battery keeps settings in memory from being lost whenever the Li-ion battery or alkaline batteries
are removed. This backup battery should last approximately ve years, and must be replaced by an
authorized mPower service technician. It is not user-replaceable.
3.3 DATA PROTECTION WHILE POWER IS OFF
When the instrument is turned o, all the current real-time data including last measured values are
erased. However, the logged data are preserved in non-volatile memory, so that even if the battery is
disconnected, the logged data will not be lost.
4. Instrument Operation
The NEO gives real-time measurements and activates alarm signals whenever the readings exceeds
preset limits. Prior to factory shipment, the instrument is preset with default alarm limits and the
sensor is pre-calibrated with standard calibration gas. However, the instrument should be tested and
the calibration veried before the rst use. After the instrument is fully charged and calibrated, it is
ready for immediate operation.
The instrument works in dierent operation modes dened by the product model and factory setting.
When the unit is turned on, it enters User Mode, where basic users can only see and use a limited set
of functions. In Conguration Mode, which is password protected, advanced users can adjust various
settings. In some cases, Conguration Mode is not accessible on the instrument display and the
mPower Suite software must be used to change settings.
5. Basic User Mode
5.1 TURNING THE INSTRUMENT ON
Press and hold the Mode key
EscEnt
OK
until the display, beep buzzer & LEDs turn on, and then release.
If the mPower logo does not appear rst, there is likely a problem and Watchgas Technical Support
should be contacted. The instrument then performs self-tests after the screen displays the rmware
version and serial number.
Self-tests include:

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5.2 TURNING THE INSTRUMENT OFF
Press and hold the Mode key
EscEnt
OK
for 3 seconds, and continue to hold for a 5-second countdown until
“Unit o...”is displayed.
5.3 USER MODE SUMMARY
The instrument will be running in basic User Mode after being turned on. It will show the real-time
reading and auxillary information.
Press the Up key
EscEnt
OK or Mode Key
EscEnt
OK
to cycle through the main menu screens. If no action us taken
on any screen for 60 seconds, the display will return to the main menu automatically.
After self-tests, the instrument will show sensor information and instrument conguration information
in sequence. Once the startup procedure is complete, and a numerical reading screen with icons is
displayed, the instrument is fully functional and ready for use.
FLOW CHART FOR BASIC USER MODE
5.4 INTEGRATED SAMPLING PUMP
The instrument includes an integrated, diaphragm-type sampling pump, providing ow rates of
330 to 450 cc/min. adjustable in three speed settings. When used with a 25 mm diameter 0.45 µm
lters the ow rate is about 250 to 360 cc/min. at low and high settings. Flow will decrease if the
lter accumulates particulate matter, or if a lter is not used and particles get caught in the pump
diaphragm. Connecting Teon tubing with 1/8” inside diameter to the gas inlet port, this pump can
pull air samples from 200’(61 m) away horizontally, or 90’ (27.5 m) vertically, at about 3’(0.9 m) per
second ow rate. Note that at 200’the PID response will be delayed by about 1 minute, the time
required for the gas sample to reach the instrument.

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Caution
During operation, make sure the probe inlet and the gas outlet are free of obstructions.
Obstructions can cause premature wear on the pump, false readings, or pump stalling.
5.4.1 PUMP STATUS
During normal operation, the pump icon alternately shows inow and outow. If there
is a pump failure or obstruction, the alarm sounds and the pump stall icon blinks on and
o. If this occurs, clear the obstruction and press the Right key to restart the pump.
5.5 EXTERNAL WATERTRAP FILTERS
The external lter is made of a PTFE (Teon) or PVDF membrane with 0.45 micron pore size to
prevent dust or other particles from being sucked into the sensor manifold, which could damage the
instrument. It prolongs the operating life of the sensor and pump. To install the external lter, simply
screw it in to the instrument’s inlet probe using the Luer connection.
5.6 ALARM SIGNALS
During each measurement period, the gas concentration is compared with the programmed alarm
limits (gas concentration alarm limit settings). If the concentration exceeds any of the preset limits,
the loud buzzer and red ashing LED are activated immediately to warn of the alarm condition. In
addition, the instrument alarms if one of the following conditions occurs: battery voltage falls below a
preset voltage level, failure of the UV lamp, or pump stall.
Message Condition Alarm Signal
HIGH Gas exceeds‘High Alarm’ limit 3 beeps/ashes per second
OVR Gas exceeds measurement range 3 beeps/ashes per second
MAX Gas exceeds electronics’ maximum range 3 beeps/ashes per second
LOW Gas exceeds‘Low Alarm’ limit 2 beeps/ashes per second
TWA Gas exceeds‘TWA’limit 1 beep/ash per second
STEL Gas exceeds‘STEL’limit 1 beep/ash per second
Pump icon ashes Pump failure 3 beeps/ashes per second
Lamp PID lamp failure 3 beeps/ashes per second plus‘Lamp’
message
Battery icon ashes Low battery 1 ash, 1 beep per minute plus battery icon
ashes
CAL Calibration failed, or is overdue 1 beep/ash per second
NEG Gas reading measures less than number
stored in calibration
1 beep/ash per second
Cal Gas Cal Span Unit Low High TWA STEL
Isobutylene 10 ppm 50 100 10 25
5.6.1 ALARM SIGNAL SUMMARY
5.6.2 PRESET ALARM LIMITS & CALIBRATION
The instrument is factory calibrated with standard calibration gas, and is programmed with default
alarm limits. For example, on the NEO PPM, the default values are:

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Alarm limits and calibration parameters can be adjusted in Conguration Mode as desired for
particular testing purposes and applications.
5.6.3 TESTING THE ALARMS
The alarm can be tested whenever the main (Reading) display is shown. Press the Right key, and the
audible and visible alarms are tested.
5.7 BACKLIGHT
The LCD display is equipped with an LED backlight to assist in reading the display under poor lighting
conditions. Background lights can be turned on automatically under poor light condition and be set
in a variety of ways. We can choose from the settings menu under Cong Mode or through WatchGas
mPower Suite.
5.8 DATALOGGING
During datalogging, the instrument displays a disk icon to indicate that datalogging is enabled. The
default status is to have datalogging on, at 60-second intervals, which allows up to one year of data
storage. The instrument stores the measured gas concentration at the end of every sample interval
(when datalogging is enabled). In addition, the following information is stored: user ID, site ID, serial
number, last calibration date, and alarm limits. All data are retained (even after the unit is turned o) in
non-volatile memory so that it can be down- loaded at a later time to a PC. Stored data are organized
into‘events’, with a new event created each time the instrument is turned on, or a conguration
parameter is changed, or datalogging is interrupted. After an event is recorded, the unit records a
shorter form of the data. When transferred to a PC running mPower Suite, these data are arranged with
a sample number, time, date, gas concentration.
5.9 MAN DOWN
Settings are available for On/O depending on the user’s requirement.
The Man Down Alarm is a critical and potentially lifesaving safety feature of the NEO. Its function is
based on the premise that if the instrument is motionless when it is not supposed to be, something
wrong may be happening to its user. If that is the case, the NEO not only goes into alarm locally on
the instrument, but also remotely, over a wireless network, to notify people in the vicinity, as well as
remote safety ocers at a command center, that a person is down, so that help can be dispatched
quickly.
Note: Remote notication requires wireless connection to a network.
5.10 WIRELESS
When NEO is equipped with wireless capability, it is set up through the wireless sub-menu.

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6. Conguration Mode
The Cong Mode is used to modify the instrument conguration settings.
• Press the Up key
EscEnt
OK or Mode key
EscEnt
OK
to scroll through the list.
• Press the Right key
Esc
Ent
OK
to select the menu item.
• Press the Left key Esc
Ent
OK
to select the menu item.
6.1.2 ENTERING NUMERICAL VALUES
For example, to enter a numerical password:
• Increase or decrease the number from 0 through 9 by pressing the
Up key
EscEnt
OK or Mode key
EscEnt
OK
.
• Press the Right key
Esc
Ent
OK
or the Left key Esc
Ent
OK
to move the cursor.
• After entering the desired numbers, press the Right key
Esc
Ent
OK
or the Left key Esc
Ent
OK
to move th cursor
to
the‘√ ‘ mark, and then press the Up key
EscEnt
OK to accept and move to the next menu.
6.1 NAVIGATING CONFIG MODE
There are two types of menus in Cong mode: 1) those that ask for selection from a list and 2) those
that ask for a numerical value to be entered.
6.1.1 SELECTION FROM A LIST
For example, the Measurement sub-menu contains both a text-format list and a radial-button list.
EscEnt
OK
EscEnt
OK
EscEnt
OK
EscEnt
OK
Esc
Ent
OK
Esc
Ent
OK