FORENSICS DETECTORS FD-600 User manual

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PROFESSIONAL
COMBUSTION
ANALYZER
Model: FD-600
Manual Revision Version: v1.0
CONFIGURATION &
COMPONENTS INCLUDED
Serial #:
CO Sensor
O2 Sensor
FD-600 Analyzer
NOx Filter & Water Trap
Gun Probe
Carry Case
110V Wall Charger
Micro USB Cable
Magnet
Calibration Certificate
User Manual
Other

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PRODUCT FEATURES
•32bit microprocessor, color display and graphing
•Measures CO (ppm) & O2 (%)
•Calculates COAF (air free) & EA (excess air)
•Comes with a Water Trap, Particle & NOx filters
•For residential combustion AND / OR ambient applications
•Strong magnet for easy mount on appliances
•Rechargeable Lithium-ion battery via easy USB charger
•Professional WATER PROOF hard-case
•Gas Sample Pistol Probe
PRODUCT COMPONENTS
1. Analyzer - CO & O2 sensors with a niobium magnet for mounting.
2. Sample Gun with Stainless Steel Probe.
3. Hose assembly. Silicone tubing, Water trap, particle and NOx filters. The NOx filter
removes acid gases to minimize CO sensor interference.
4. Waterproof Hard-case
5. USB Charging cable
6. USB Charger
7. Calibration NIST Certificate
8. Manual (this document)
IMPORTANT OPERATIONAL NOTES
-Ensure the analyzer is stored well within specifications.
-When using the analyzer, condensation may occur and the water trap will
slowly fill with water. Keep track of this. Empty as necessary. Always empty
before storing and retiring the unit.
-The sensors have a rated life of 2 years. If well taken care of, they can last
longer (up to 3 years) but will require more frequent calibration.
-Please email FORENSICS DETECTORS if any part requires replacement.
-When placing the probe in the exhaust flue, ensure it remains in the hot
exhaust for no longer than 2 minutes. Avoid high temperatures for
prolong period of time (<3 minutes). The pistol gun made get VERY HOT.
-Gas sample probe may get hot. BEWARE of burning your hand.
-If unsure, always ask. Email us: [email protected]

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1. INTRODUCTION
You have purchased the PROFESSIONAL COMBUSTION ANALYZER by
FORENSICS DETECTORS. The detector is factory calibrated to NIST standards.
This product is a Professional analyzer with graphing, color display and alarm
logging. Turn ON and GO. This detector is made with a robust ATEX design using
high quality electrochemical sensors. This detector was made for HVAC
technicians, contractors, engineers, energy inspectors, plumbers and others
that need to analyze combustion and flue gases (from natural gas or propane). In
addition, the detector can be used as an ambient air quality detector to assess
for CO leakage. The analyzer contains both CO and O2 sensors. The analyzer
calculates COAF (CO Air Free) and Excess Air (EA) only when O2 is less than
20%. COAF & EA are calculated as follows:
COAF = (COmeasured x 20.9) / (20.9 - 02measured)
EA% = [[20.9/ (20.9 - 02measured)] – 1] x 100
2. QUICK SETUP
1. Ensure all components included.
2. Ensure analyzer is fully charged.
3. Connect the silicon tube to the analyzer barb (inlet). Connect tubing from
water trap to Air Sample Gun barb.
4. Double check all tubing is well connected and in place.
5. Check water trap, ensure it is empty of water.
6. Turn ON the combustion analyzer. When warming up (60 sec countdown),
ensure it is in fresh air.
7. After countdown, the unit will be ready to take a measurement. CO, O2, COAF
and EA are shown on the main digital display.
8. Read this manual and familiarize yourself with unit and its operation.
9. Follow best practices when selecting a combustion gas sample location for
analyzing appliances. Follow local codes and appliance manufacturer
instructions (i.e. NFGC, ANSI, BPI)

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3. COMBUSTION ANALYZER SETUP

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4. SPECIFICATIONS
ANALYZER SPECIFICATIONS
Warranty: 1 year limited warranty
Sensor: Electrochemical Sensor CO & O2
Calculated COAF:CO Air Free (COAF) when O2 < 20%
Calculated EA: Excess Air (EA) only when O2 < 20%
Sensor CO/O2 Life: 2 - 3 years
Detection Range: CO (0-1000ppm), O2 (0-30%vol)
Error: <±5% F.S.
Response Time: <30 seconds
Pump Flow rate: 0.3 to 0.5 LPM, 300 - 500 cc/min
Noise: <60dB
Store/Oper. Temp: 32°F - 113°F
Store/Oper. Humidity: <95%RH
Battery: DC3.7V Li–Ion battery 3500mAh
Operation Time: >6 hours
Dimension/Weight: 5 x 2.7 x 1.7 inches, 244grams (8.5 oz.)
Rating: ATEX certified Exib IIB T4 Gb. IP65 certified.
CARRY CASE SPECIFICATIONS
Material: Polypropylene
Weight: 2.5 lb
Dimension: 11.7 x 8.3 inches x 3.8 inches

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5. ANALYZER OPERATION
ON/OFF: Press MIDDLE button for 3 seconds to turn ON. After 60 sec
countdown gas detection begins, pump is ON and real time gas levels is show on
the HOME DETECTION SCREEN. The unit is ready to take measurements. To
turn OFF, press MIDDLE button for 3 seconds. When in normal operation, the
Home Detection Screen will appear like below on the left image. In normal
ambient fresh air CO sensor should read ZERO and O2 should be about 20.9%.
MENU MODE: Press the MIDDLE button to enter the main MENU SCREEN. The
menu screen is shown below right. Use LEFT and RIGHT buttons to make your
selection, press MIDDLE button to select. Menu option selections are explained
in the following sections.
HOME DETECTION
SCREEN
MENU SCREEN
The analyzer calculates COAF (CO Air Free) and Excess Air
(EA) only when the O2 reading is less than 20%.

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PUMP CONTROL AND MUTE: When in the Home Detection Screen, press the
left button (FUNC) selection. This will take you to a screen menu that allows you
to control the PUMP ON/OFF and MUTE ON/OFF. Use the left and right button
to select and toggle. Press the middle button to go back to the HOME detection
screen. Turn the PUMP OFF to preserve battery life when appropriate or to limit
sample size such as in a headspace food gas analysis. When the pump is under
load the pump icon will turn RED and a few beeps will be heard.
CURVE PLOT SCREEN: When in the Home Detection Screen, press the right
button (CURVE) selection. You will see the concentration of the sensor data
being plotted in real-time over 10 seconds. The dashed lines are at the alarm
levels that are set/modified by the user. To toggle to another gas plot simply
press the left or right button until your gas selection appears. Press the middle
button to return to the Home Detection Screen. Although this device does not
have a “print” function, we recommend taking photo pictures of any interesting
plots that may be useful for analysis.
FUNCTION SET
SCREEN
CURVE PLOT SCREEN
(Example O2 plot)

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MENU OPTIONS
MENU: To enter the MENU mode, press the middle button when in the HOME
Detection Screen. The MENU screen is like the picture in the below left.
MENU SCREEN
SETTING SCREEN
Shutdown: This is an alternative way to shutdown the device.
Setting: The setting looks like the image above right. Several options exist:
1. ChannelSet: Summarizes the sensor channel information for each
available sensor. It is also used to change/toggle the displayed
concentration unit of measure (i.e. ppm, mg/m3or other). Changes will
not be required as the most popular settings are always preset as default.
2. AirPump: This is a pump load value. If the pump is under load the unit will
beep to let the user know too much load is being experienced by the pump.
Check for any blockage or kinks in the tubing. One can also SAVE the load
value so the alarm warning is not activated – and recalibrates the pump
to the new “load” pump conditions.
3. ClearRec: Password 1111 then enter. This option allows the user to clear
the alarm records in the memory of the device.
4. Language: Language options.
5. Backlight: Select the time for the screen to remain ON or Auto OFF delay.
You can set it also for Never Off, so that the display always stays ON.
6. SystemInf: Summarizes alarm points, and maximum detection limits.

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ALARM SETTINGS
AlarmSet: Alarms are triggered (LED flashes only) when alarms points are
met/exceeded. To change the alarm set points select AlarmSet in the Main
Menu (see prior section). A screen to select your gas will appear like the image
below on the left. Select your gas and edit to change the alarm set point /
trigger point as shown in the right image. When alarms are triggered a warning
symbol is shown within the corresponding gas display section within the HOME
DETECTION SCREEN. When triggered, the alarm is highlighted in YELLOW (LOW
alarm) or RED (HIGH alarm) on the HOME Detection Screen. To avoid any
annoying alarm, set the alarm either as LOW or HIGH as possible so the alarms
are not triggered.
ALARM SET
(select gas)
ALARM SET
(Example: O2 alarm value)
Always check the alarm setting to ensure you are protected and alarm
settings are as you anticipate to avoid harmful exposure levels.

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RECORDING ALARM DATA
Record:When alarms are triggered they are automatically recorded with a date
and time stamp along with the (min or max) alarm data point. This is useful for
safety personnel to keep track of exposures for record keeping and exposure
analysis purposes. To explore this information, select Record in the Menu
Screen. This will take you to the various gases as seen on the below image on
the left. Each gas will be listed along with the number of alarm records shown in
parenthesis. Select a gas and a list of alarm records will be shown similar to the
example image below on the right.
RECORD
(Select gas)
RECORD LIST
(Example memory records)
DATA LOGGING
This unit is able to transfer data to a computer for remote sampling, data
logging and continuous monitoring. The detector needs to be connected to a PC.
Go to www.forensicsdetectors.com and then go to our software data logging
page for FD-600 instructions and associated YouTube tutorials.

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ZERO CALIBRATION
GasZero: GasZero should not be used very often - only if for some reason the
baseline zero value of the sensor value is flickering or drifting and does not
maintain a zero value. For gases such as oxygen however, exposing the sensor
to pure ZERO nitrogen gas is important to maintain accuracy and for good
measure this should be undertaken periodically between 6-12 months (i.e. every
calibration cycle). For most gases (other than O2), if the sensor continues to
read above zero, cross sensitivity to vapors or other gases may be possible.
Ensure a fresh environment to diagnose this situation, particularly after high
concentration exposure.
Select GasZero from the Main Menu Screen. Select Gas to ZERO. Expose to
ZERO air for 1 min. Use fresh air for CO. For O2 expose to pure N2. Maintain a
flow of about 0.5L/min to deliver the gas to the detector (i.e. via the inlet). Then
press SAVE button to confirm the zero value. When complete, “SAVE SUCCESS”
is displayed.
MENU SCREEN
Gas Zero
(Example CO sensor)

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SPAN CALIBRATION (see our YouTube Channel for Calibration tutorial)
GasCheck: Span calibration is undertaken to ensure accurate gas concentration
reading (i.e. ensure that the display reading in ppm is accurate and true). For this
combustion analyzer, we recommend a calibration CO value of 100ppm. The
span calibration gas concentration chosen is best chosen to represent the
concentration that the sensor typically is exposed to, as to ensure maximum
accuracy for application use. We recommend calibration to be undertaken every
6 months.
To undertake span calibration from the MENU SCREEN select GasCheck. Select
passcode 1111. Select Gas to Span Calibrate. Expose to CAL gas for 1 min. For
O2, simply expose the analyzer to fresh air, which will have 20.9% of O2. When
using gas bottles, maintain a flow of about 0.5L/min when using gas bottles.
Enter and edit the gas concentration so the detector knows the concentration of
the calibration gas. After exposure, press SAVE. When complete, “SAVE
SUCCESS” is displayed. Use an appropriate multigas mixture is OK or single gas
mixture is also OK to calibrate a single sensor. Again, for oxygen, don’t forget to
simply use fresh ambient air 20.9%.
MENU SCREEN
GasCheck
Example O2 sensor
TIME AND DATE
SetTime: Select SetTime from the Main Menu Screen. Select EDIT to make the
necessary date and time changes.

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6. BATTERY CHARGING
The ANALYZER has a built-in lithium battery and can be charged via micro-USB
port. Any USB charger will work, ensure >1.0A for fast charging. Before
charging, TURN OFF the analyzer to avoid any potential damage. Charging takes
about 4 hours. When charging is required the screen will display LOW BATTERY
along with two beeps/minute. Do not charge the device in a combustible area.
7. OPERATIONAL TIPS & FINAL COMMENTS
üWhen in the ON state, after the display has switched OFF, the LED will flash
every 20 seconds to reassure the user the detector is still ON and operating
– useful for dark situations and when the screen is OFF (to save power).
üThe analyzer calculates COAF (CO Air Free) and Excess Air (EA) only when O2
is less than 20%.
üBefore turning the detector off don’t forget to flush/purge out the detector
by allowing the pump to run for 60 secs to allow clean air to purge.
üEnsure tubing and items are clean before storing as to avoid any
contamination, residual odors or toxic gases that may poison the sensor.
üThe sensors have a rated life of 2 years. If well taken care of, they can last
longer (up to 3 years) but will require more frequent calibration.
üEnsure periodic calibration every 6 months so that the performance of the
detector remains within specification. If the calibration period is >6 months,
the detector still operates but accuracy will be compromised.
üWhen placing the probe in the exhaust flue, ensure it remains in the hot
exhaust for no longer than 2 minutes. Avoid high temperatures for prolong
period of time (<3 minutes). The pistol gun made get VERY HOT.
üGas sample probe may get hot. BEWARE of burning your hand.
üIf unsure, always ask. Email us: [email protected]
üRead this manual and familiarize yourself with unit and its operation.
üCheck our YouTube channel for instructional videos of this product including
step-by-step calibration and data logging setup and tutorials.
üFollow best practices when selecting a combustion gas sample location for
analyzing appliances. Follow local codes and appliance manufacturer
instructions (i.e. NFGC, ANSI, BPI).

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** WARNING**
ØKEEP DETECTOR AWAY FROM ELECTROMAGNETC INTERFERENCES (i.e.
PHONES & MAGNETS)
ØSTORE DETECTOR WITHIN SPECIFICATIONS
ØIF UNWELL, SEEK CLEAN AIR & MEDICAL ATTENTION.
ØFOLLOW INSTRUCTIONS AS THE DETECTOR IS VERY SENSITIVE
ØTO ENSURE ACCURACY, CALIBRATE DEVICE AT LEAST EVERY 6 MONTHS
ØCHECK AND SET ALARM LEVELS APPROPRIATELY TO AVOID HARMFUL
EXPOSURE - CONSULT WITH YOUR SAFETY OFFICER OR WITH
STATE/FEDERAL AGENCIES.
ØDO NOT TOUCH PROBE AFTER A FLUE GAS MEASUREMENT, IT IS VERY HOT
AND BURNING TO SKIN WILL OCCUR
ØTAKE ALL PRECAUTIONS WHEN UNDERTAKING COMBUSTION
MEASUREMENTS AS TO NOT ALLOW TOXIC GASES INTO YOUR
BREATHABLE ZONE
ØKEEP AWAY FROM DUST & PARTICULATE AND NEVER EXPOSE TO
CONCENTRATED VAPORS, HARSH CHEMICALS OR EXTREMELY HIGH
CONCENTRATION LEVELS AS IT MAY POISON THE SENSOR
ØSENSOR LIFE IS 2 YEARS FROM RECEIPT. IF DEVICE HAS BEEN TAKEN
CARE OF THE SENSOR CAN LAST LONGER, BUT MAY REQUIRED
CALIBRATION MORE OFTEN TO OPERATE WITHIN PERFORMANCE
SPECIFICATIONS.
ØDO NOT USE THIS DETECTOR FOR LIFE THREATENING APPLICATIONS. THIS
IS NOT A PERSONAL PROTECTION DEVICE. BE ATTENTIVE.
ØIF REGULARLY USED, ENSURE BUMP TESTING OCCURS AT LEAST ONCE
PER WEEK TO CONFIRM SENSOR OPERATION. IF SELDOM USED,
ENSURE BUMP TESTING OCCURS BEFORE USE.

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WARRANTY DISCLAIMERS
This product is covered by a one year limited warranty.
This warranty does not cover damage resulting from accident, misuse,
disassembly, abuse or lack of reasonable care of the product, or applications not
in accordance with the user manual. It does not cover events and conditions
outside of our control, such as Acts of God (fire, severe weather etc). It does not
apply to retail stores, service centers or any distributors or agents. We will not
recognize any changes to this warranty by third parties. We shall not be liable for
any incidental or consequential damages caused by the breach of any express or
implied warranty. Except to the extent prohibited by applicable law, any implied
warranty of merchantability or fitness for a particular purpose is limited in
duration for 1 year.
THIS PRODUCT CANNOT BE REPAIRED IF THE UNIT IS TAMPERED WITH IT
WILL INVALIDATE THE GUARANTEE. IF THE UNIT IS FAULTY PLEASE
RETURN IT TO YOUR ORIGINAL SUPPLIER WITH YOUR PROOF OF
PURCHASE.
Product Tested, Calibration & QA/QC in California, USA
Product packaged in California, USA
Product Made in China
Copyright © 2021, FORENSICS LLC, all rights reserved.
FORENSICS, FORENSICS DETECTORS are registered trademarks of FORENSICS
LLC. All other trademarks, trade names, service marks and logos referenced
herein belong to their respective companies.

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