Fieldpiece CAT85K2 User manual

Fieldpiece®
Combustion Analyzer HC
OPERATOR'S MANUAL
Model CAT85

32
Contents
Safety Information. . . . . . 4
Warning and Caution
Description . . . . . . . . 6
Features
What’s Included
CAT85 Hardware
Common Sampling Points
Operation. . . . . . . . . 12
SensorVault™ Technology
HydroCycle™ Pump
Battery Charging
Powering ON
Powering OFF
Storage
Job Menu . . . . . . . . . 14
Combustion
Ambient CO
Drafts
Primary Air
Smoke
Fuel Pressures
Manometer . . . . . . . . 20
Customer
Note
Report
Save and Exit
Job Archive
Settings . . . . . . . . . 24
Maintenance. . . . . . . . 26
General
Dust Filter Replacement
Sensor Replacement
Calibration
Specications . . . . . . . 30
Sensors
Test Parameters
Limited Warranty . . . . . . 34
Sensor Warranty
Obtaining Service

54
Safety Information
Only qualified personnel trained in service
and installation of electric heaters, boilers, and
furnaces shall use this combustion analyzer.
This device measures and analyzes key
parameters of combustion equipment including
oxygen, carbon monoxide, temperature, carbon
dioxide, eciency, and draft pressure.
Read and understand this operator’s manual
in its entirety before using to prevent injury
or damage to you or the equipment. As with
any job, appropriate use of personal protective
equipment (PPE) is required.
!
WARNING
• Do not use the analyzer as a safety device.
• Always be aware of and test for ambient CO levels.
• Do not use unless in a well-ventilated location.
• Do not use in areas classied as hazardous locations; not
intrinsically safe.
• Do not use unless a visual inspection ensures it’s safe to do so.
• Ensure any connections to fuel sources are leak-free.
• Do not touch or store probe until it cools to ambient
temperature.
• Condensate may be acidic.
• Combustion gases may be toxic even in low concentrations.
• Seal any equipment holes used during testing in order to
prevent dangerous ue gas entering the space.
!
CAUTION
• Do not use or store near solvents.
• Do not clean with solvents.
• Do not use on a continuous basis.
• Refer to 3rd party smoke test documentation to verify if smoke
in equipment is at a safe level (1 or less). Not verifying this prior
to conducting other tests, such as combustion, can result in
damage of the analyzer and produce incorrect measurements.
• This device should only be opened and/or serviced by
authorized personnel. Gas sensors may be replaced by user.
• Do not disconnect combustion probe cable when powered on.
• Use only within operating environment specication.
• Do not use in the rain or wet environments.

76
Description
The Fieldpiece CAT85 Combustion Analyzer HC
provides a hassle-free solution for technicians to
get the job done quickly, easily, and safely while
improving system eciency.
Accurate sensors of O2, CO, pressure, and
temperature along with powerful trending,
provide key insight into equipment performance.
SensorVault™ technology seals to prolong sensor
life.
Live draft pressure measurement maintains
accuracy throughout your combustion test.
Dual manometer ports are also included for
convenience.
The combustion probe uses a patent pending
HydroCycle™ pump to return condensate back
into the ue - no more water trap hassles!
Features
• 4 Year Gas Sensor Warranty
• Large Intuitive Touchscreen
• Powerful Trending
• SensorVault™ Technology
• HydroCycle™ Pump
• Real-time Live Draft Pressure
• Dual Manometer Ports
• Rechargeable Battery
• In-use USB-C Charging
• Field Replaceable Smart Sensors
• Job Link® System App Compatible
• Wireless Printer (CATPR) Compatible
• Durable Hard Lined Case
What’s Included
• Combustion Analyzer
• Combustion Probe + HydroCycle™ Pump
• Hard Lined Carrying Case
• Extra Dust Filters and O-rings
• USB-C Charging Cable
• Operator’s Manual
• 1 Year Device Warranty
• 4 Year Sensor Warranty

CAT85
Hardware
98
Flue Gas
Exhaust
USB-C
Charging
Port
P1 Pressure Port
Probe Connection
P2 Pressure Port
Touchscreen LCD
Gas Sensor Cover
(2) 2.5mm Hex Sockets
Probe Cable Connector
(Pull/Push at Arrows)
(4) Magnetic
Mounts
Click Power Button
(SensorVault™Technology)
Threaded
Probe Cone
Lock
HydroCycle™ Pump
Condenser Ventilation
Filter Cap
(1/4 turn)
HydroCycle™ Pump
Condensate Outlet
Sensing Point
(Flue Gas Inlet,Temperature Sensor, Probe Pressure)
Filter
O-ring

Atmospheric
(Natural Draft)
Water Heater
High Eciency
(Condensing) Furnace
Power Burner
(Induced Draft)
Furnace
SP
SP
SP
SP
SP
SP
SP
SP
SP
SP
SP
SP
SP
SP
SP SP
SP
SP
SP
SP
SP
SP SP
SP
SP
SP
SP
SP
SP SP
SP
SP
SP
SP
SP
Power Burner
(Induced Draft)
Tankless Water Heater
Flue Gas Direction
SP SP
SP
SP
SP
SP
SP
SP SP
SP
SP
SP
SP
SP
Sample Point
Atmospheric
(Natural Draft) Furnace
1110
Common Sampling Points
The many types of combustion equipment vary
in their design and therefore their ideal sampling
points. However, there are commonalities that
make for useful guidelines when analyzing
performance.
Heed equipment manufacturer instructions
above anything mentioned in this manual.
• Before inserting the probe in the ue, it’s good
practice to test for excessive soot which may
lead to carbon buildup within the analyzer or
overexpose sensors.
• Use the probe cone lock to hold the
probe tightly in place at the sampling
point.
• The center of the ue is often a
good place to locate the sensing
point of the probe, but locating
at the highest point of CO is best.

1312
Operation
The CAT85 workow is streamlined to quickly
get into your job, complete your testing, send
your report, and get onto your next job.
SensorVault™ Technology
The SensorVault™ technology of the power
button unseals sensors when powering on and
and seals the sensors when powering o. This
requires a bit more force than most other buttons
so be sure to press fully. You’ll hear a“click”.
HydroCycle™ Pump
The CAT85 does not have a water trap. Instead,
ue gas condensate is automatically pumped
back out of the front of the probe at a regular
interval. Point the probe downwards as you
remove it to empty any remaining condensate
before storing.
Battery Charging
Charge the batteries with the USB-C cable
connected to any USB charging port/adapter
rated at 5V/2A DC. CAT85 can be operated while
charging. If you have diculty charging or using
when connected, try a shorter cable or a USB
port/adapter with higher rated amps.
Powering ON
Read “Safety Information” section.
1. Push the probe cable connector into the bottom of CAT85.
2. Move probe to fresh ambient air for accurate sensor zeroing.
• This step should be executed outside of the test room and away
from any vehicle exhaust where traces of CO could be lingering.
• Do not rely on the analyzer alone to check for unsafe CO levels.
3. Fully press the power button down until you feel and hear the
“click”of the SensorVault™ technology UNSEAL the sensors.
Press deeper if it displays “SEALED”.
4. Wait for start countdown to complete.
5. Start testing. See “Job Menu” section.
Powering OFF
Read “Safety Information” section.
1. Complete your testing and reporting.
2. Move probe to fresh ambient air to
clear CAT85 of hot ue gas.
3. Fully press the power button down until you feel and hear the
“click”of the SensorVault™ technology seal the sensors.
The unit powers o when SEALED and purging is complete.
Press deeper if it displays “UNSEALED.”
4. Store safely. See “Storage” section below.
Storage
Read “Safety Information” section.
• Ensure the probe has cooled to ambient temperature before
inserting into its protective sleeve of the carrying case.
• Insert the CAT85 body upside down into the padded pocket so
the display is fully covered and the cable is free to move.
• Do not stack objects on top of the case.
• Warmup is extended if freezing temperatures are detected, but
it’s best to store at room temperature.
Allow the timer
to count down
before turning
ON/OFF again.

1514
Job Menu
The JOB MENU is the heart of CAT85. Each job
has its own list of saved tests. After saving your
tests, view directly in the Job Link® mobile app
or send your report to a model CATPR wireless
thermal printer. SAVE AND EXIT when you’re
ready for your next job. Jobs are automatically
numbered sequentially. Open the JOB ARCHIVE
to view, continue, or delete jobs.
Combustion
By default, the COMBUSTION test starts automatically after
startup is complete. This test analyzes ue gas from various heating
equipment. Use this test to setup, test, and document equipment
performance.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Mount the CAT85 onto a secure, cool, magnetic surface near the
sampling point.
3. Twist probe cone lock into the ue port at the sampling point and
secure the probe. See “Common Sampling Points” section.
4. Select COMBUSTION from the JOB MENU.
5. Select the fuel and equipment type.
6. View live measurements.
For best results, test for at least 5 minutes near the center of the
ue, where you nd the highest level of CO.
7. SAVE ALL measurements displayed.
8. Remove the probe and cone from the ue when nished.
Be careful not to let the metal touch anything until it cools.
Reference Ranges
When selecting equipment, the reference range icon shows when
available. Temperature, O2, CO, and CO air free all have reference
ranges.These ranges show the generally accepted ranges for the
chosen equipment type. The arrow is GREEN if within the reference
range and YELLOW if not. These ranges are for reference only.
ZERO PROBE
ZERO PROBE sets the pressure sensor to 0 and resets the oxygen
zero point. Always remove the probe from the ue before using ZERO
PROBE. For the very best O2 measurements, start the pump and keep
the probe in ambient air for 2 minutes before using ZERO PROBE.
CO Sensor Overexposure
Do not power o if you see this warning. It appears if the CO sensor
detects a potentially damaging level of CO. Remove the probe from the
ue so fresh ambient air can pump through the device.
Trending
Use trending to check how combustion parameters change over
time. See “Settings” section for TRENDING SETUP.

1716
Ambient CO
CO is a very dangerous gas and it’s critical that living spaces are
clear of carbon monoxide.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Select AMBIENT CO from the JOB MENU.
3. View CO measurement while walking through the living space.
4. SAVE the measurement displayed.
“DELETE” temporarily deletes a single value so you can retest.
“DELETE TEST” deletes the test.
Ambient CO Warning
Vacate the area immediatly if you see the Ambient CO warning. It
appears if the CO sensor detects a harmful level of CO. The CO warning
level can be adjusted from the warning screen.
Drafts
CAT85 saves live draft pressure with the COMBUSTION test, but a
saved FLUE DRAFT measurement overrides this value. Draft pressure
measurement is important for safety and performance.The probe
pressure sensor is used for all three drafts.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Select DRAFTS from the JOB MENU.
3. Mount the CAT85 onto a secure, cool, magnetic surface near the
sampling point.
4. ZERO PROBE to zero the probe’s pressure sensor.
Always remove the probe from the ue before using ZERO PROBE.
5. Move probe to desired sampling point- DILUTED, FLUE, or
OVERFIRE.
6. View live measurement.
7. SAVE the measurement displayed.
“DELETE” temporarily deletes a single value so you can retest.
“DELETE TEST” deletes the test.
8. Remove the probe from the sampling point when nished.
Be careful not to let the metal touch anything until it cools.

1918
Primary Air
Primary air temperature is measured during startup and is used for
the COMBUSTION test. This is the temperature of the air going into the
combustion equipment. It’s sometimes useful to set it after startup if
the ambient temperature changes. You can enter it manually or use the
probe’s temperature sensor.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Select PRIMARY AIR from the JOB MENU.
3. Move the probe to the entry point of air into the combustion
equipment.
4. View live measurement or use the keyboard onscreen to
manually enter a value.
5. SAVE the temperature.
“DELETE” temporarily deletes a single value so you can retest.
“DELETE TEST” deletes the test.
Smoke
The smoke test is used to document the soot levels within the ue.
This is good practice when“dirty”combustion is expected in order to
extend the life of CAT85 and equipment. A third party smoke tester is
needed.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Select SMOKE from the JOB MENU.
3. Use your smoke tester to nd the smoke level.
4. Select the corresponding level on screen.
5. SAVE the smoke level.
“DELETE” deletes the entry.
Fuel Pressures
CAT85 has P1 and P2 pressure ports for connecting hoses (not
included) to gaseous fuel sources/regulators. Do not test liquid fuels.
This is very similar to the Manometer test, but uses fuel-centric labels
that aid in reporting.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Shut o main gas supply power to equipment.
3. Mount the CAT85 onto a secure, cool, magnetic surface near the
test point(s).
4. Connect a static pressure hose to P1 to measure INLET pressure.
Connect astatic pressure hose to P2 to measure OUTLET pressure.
An additional OUTLET pressure is available for two stage systems.
5. Select FUEL PRESSURES from the JOB MENU.
6. ZERO each pressure port sensor, P1 and P2 before connecting to
fuel source. Ensure there are no kinks in the hose.
7. Connect hose(s) to INLET and/or OUTLET.
8. View live measurements.
9. SAVE any measurement displayed.
“DELETE” temporarily deletes a single value so you can retest.
“DELETE TEST” deletes the test.
10. Follow manufacturer’s specication for target inlet and outlet
fuel pressures before operating equipment.

2120
Manometer
The manometer test uses P1 and P2 ports for easy static pressure
testing. Save P1-P2 simultaneously or separately.
Read “Safety Information” section.
1. Ensure startup is complete. See “Powering On” section.
2. Mount the CAT85 onto a secure, cool, magnetic surface near the
test point(s).
3. Connect static pressure hose (not included) to P1. Connect static
pressure hose (not included) to P2.
4. Select MANOMETER from the JOB MENU.
5. ZERO each pressure port sensor, P1 and P2, before locating at test
point. Ensure there are no kinks in the hose.
6. Point the hose openings towards the source of airow.
Use model ASP2 static pressure probes for better control.
7. View live measurements.
SAVE any measurement displayed.
For measurements less than 2 inWC, save reading within 1 minute
after zeroing for best accuracy.
“DELETE” temporarily deletes a single value so you can retest.
“DELETE TEST” deletes the test.
Customer
Each job has a customer entry. JOB ARCHIVE uses this entry for
searching. You can use this eld for whatever you want. For example,
it can be a serial number or a phone number. See “Settings”section for
report contents.
1. Ensure startup is complete. See “Powering On” section.
2. Select CUSTOMER from the JOB MENU.
3. Use the keyboard to enter.
4. SAVE the customer.
“DELETE” deletes the entry.
Note
Each job has a note entry.
1. Ensure startup is complete. See “Powering On” section.
2. Select NOTE from the JOB MENU.
3. Use the keyboard to enter.
4. SAVE the note.
“DELETE” deletes the entry.

2322
Report
Each job has a report which is a collection of saved tests, your
company info, reference O2, date, and time. Date and time is recorded
at the time of sending the report. Edit report contents from settings.
1. Ensure startup is complete. See “Powering On” section.
2. Select REPORT from the JOB MENU.
At least one test must be saved to view the job report.
Access the JOB MENU of saved jobs from JOB ARCHIVE.
3. Scroll through the report using the scroll bar.
4. PRINT to model CATPR wireless thermal printer.
PRINT button is active if CATPR is detected.
5. DELETE JOB deletes the job from memory.
Job Link® System Reporting
Turn Job Link System ON to view CAT85 in the Job Link system
mobile app (see“Settings”section). The Fieldpiece Job Link system app
is extremely powerful and ever evolving.
View live combustion and all saved tests of the current job directly
in the app. Then email a report quick and easy directly from your
mobile device!
Save and Exit
SAVE AND EXIT to save your job and start a new job, sequentially
numbered. You can return to saved jobs from JOB ARCHIVE.
Low Memory Notice
A notice appears when memory is too low to SAVE AND EXIT. Delete
jobs individually from JOB ARCHIVE or delete all jobs from SETTINGS.
Job Archive
Open JOB ARCHIVE from the JOB MENU.
• Sort jobs by date.
• Search jobs by customer.
• Select a job to open it.
• Use the X icon to delete a job

2524
Settings
Access SETTINGS from the top right corner of
the Job Menu. Each setting button cycles through
its options or to its own screen (blue arrow).
The DEFAULTS button in the top right corner of
the settings reverts to default settings, but jobs
are not deleted.
Job Link® System: OFF (default), ON
Select ON to view live combustion and saved tests on the Job Link
system mobile app. (Aects battery life.)
Brightness: HIGH, MEDIUM (default), LOW
(Aects battery life.)
Button Sound: ON (default), OFF
(Aects battery life.)
Sensor Remaining (status): % O2 and % CO sensor life remaining.
New sensors show 100%. When life of either sensor is below 5%, a
notice appears at startup.
Memory % Free (status): % of memory remaining for saving jobs.
When memory is too low, a notice appears when trying to SAVE AND
EXIT a job. DELETE ALL is a quick way to delete all jobs and restart at
JOB #1. Delete single jobs from within the JOB ARCHIVE screen.
Date and Time: EDIT to adjust date and time. 24 hour time is always
used. Date format is always set to Year-Month-Day for easy sorting.
Company Information: EDIT to adjust Company Information shown
on reports.
Startup Screen: COMBUSTION (default), JOB MENU, FUEL TYPE
Set which screen you want to see after start countdown is complete.
Auto Hold Display: PUMP STOP (default), NEVER
Select NEVER to continue viewing live measurements while the pump
is stopped.
Combustion Setup: EDIT to select parameters and their slots on the
COMBUSTION screen. To hide a slot completely, assign a parameter to
the slot you want to hide, then assign that parameter to another slot.
Trending Setup: EDIT to select parameters on the TRENDING screen.
SET LIMITS to adjust each parameter’s UPPER (maximum) and LOWER
(minimum) values of the graph. Controlling these limits allows you to
eectively zoom and shift each parameter independently for better
visibility.
Report Contents: EDIT to select what is shown on reports.
Language (status): English (default) This is not adjustable.
Temperature Unit: ° F (default), °C
Pressure Unit: inWC (default), torr, Pa
[%] Reference O2: 6.0% (default) EDIT to adjust the reference oxygen
% used for calculating CO Air Free.
Eciency Calculation: Standard (default), Siegert
Siegert’s formula is typically only used in parts of Europe.
Firmware [version]: UPDATE to install new rmware if it becomes
available at www.eldpiece.com

Filter Cap
(1/4 turn)
Filter
O-ring
2726
Maintenance
General
Wipe with damp cloth to clean the exterior.
Do not use solvents.
Dust Filter Replacement
Replace the dust (particulate) lter if you notice
slow response times or when it’s visually darker.
Dust Filters: model RFC10
1. Ensure the probe has cooled before opening to avoid contact with
hot gas and liquid that may be within the probe.
2. Rotate the Filter Cap 1/4 turn counter-clockwise to release.
3. Pull out the old Probe Filter and replace if needed.
4. Pull out the O-ring and replace if needed.
5. Replace the Filter Cap.

2.5mm
Hex Sockets
Sensor
Cover
Oxygen Sensor (RSO2L)
Carbon Monoxide
Sensor (RSCOR)
2928
Sensor Replacement
SensorVault™ technology prolongs the life
of sensors, but they eventually need to be
replaced. When a sensor’s life drops below 5%,
a notication appears during startup to inform
you it’s time to replace it.You can view estimated
remaining life at any time in SETTINGS.
O2 sensor: model RSO2L
CO sensor: model RSCOR
1. Double check which sensor needs to be replaced.
Leave a new sensor in its packaging until you’re ready to install it.
2. Power o CAT85.
3. Use a 2.5mm hex key to remove the two socket head screws on
the sensor cover labeled SENSOR ACCESS.
4. Lift up the bottom of the sensor cover to reveal the gas sensors.
5. Pull the old sensor straight out.
6. Check and remove the new sensor from its packaging.
7. Align and push the new sensor straight in.
The sensor cover won’t close if the sensor is inserted incorrectly.
8. Tilt the sensor cover lip back into place and fasten screws.
9. Power on CAT85 to check sensor life in SETTINGS.
Anything above 95% is normal.
Calibration
Replacement sensors have calibration data
built-in and do not require calibration.

3130
Specifications
Display: Touchscreen TFT LCD (5.5 in diagonal)
Probe Size: 10.7 in (272 mm) length, 0.32 in (8.0 mm) diameter
Accuracy: Stated accuracies at 23°C ±5°C, <75% R.H.
Battery Type: 3.7 VDC (nominal), 6400mAh, non-replaceable
Battery Life: 5 hours typical (pump running 80% of the time)
Charge Time: < 7 hours typical @ 5V/2A DC power
(USB power adapter not included)
Charging Port: USB-C (Usable when connected to power.)
Memory: 1000 jobs (approx.)
Warm Up Time: 45 seconds (90 seconds near freezing)
Operating Environment:
14°F to 104°F (-10°C to 40°C); < 75% RH (non-condensing)
Storage Temperature: -4°F to 140°F (-20°C to 60°C); < 80% RH
Weight: 44.25 oz (1255 g) with probe
US Patent: www.eldpiece.com/patents
Wireless Range: 1000 feet (305 meters)
Fuel Types: Natural Gas, Propane (LPG), Oil #2 (Light), Oil #6 (Heavy),
Biofuel, Coal, Coal Town Gas, Coking Oven Gas, KOKS, Custom (x3)
Warranty: 1 year (4 years sensors only)
Job Link® System Minimum:
BLE 4.0 devices running iOS 7.1 or Android™ Kitkat 4.4
Latest compatibility at www.eldpiece.com
Printer: FieldpieceWirelessThermal Printer (model CATPR)
Certications:
FCC ID: 2ALHRCATX5
IC: Industry Canada
IC: 22518-CATX5
Waste Electrical and
Electronic Equipment
Sensors
Temperature
Sensor Type: Type K rod thermocouple (xed)
Response Time: < 30 seconds (T90)
Oxygen %
Sensor Type: Electrochemical (replaceable)
Response Time: < 30 seconds (T90)
Max Overload: 30% Oxygen
Carbon Monoxide PPM
Sensor Type: Electrochemical (replaceable)
Response Time: < 90 seconds (T90)
Max Overload: 10000 ppm Carbon Monoxide
Pressure (Probe)
Sensor Type: Piezoresistive pressure sensor
Response Time: < 10 seconds (T90)
Max Pressure: 4.0 inWC will cause damage
Units: inWC, torr, Pa
Pressure (Ports)
Sensor Type: Silicon pressure sensors
Response Time: < 10 seconds (T90)
Port Type: 2 connectors (P1, P2) for ex tubing
(4.5mm to 8.0mm ID, not included)
Max Pressure: 11.6 psig (321 inWC) causes damage
Units: inWC, torr, Pa

3332
Test Parameters
Stack Temperature
Range: 32 to 752°F; 0 to 400°C
Best resolution: 0.1°F; 0.1°C
Accuracy:
±2.5°F [32°F to 212°F], ±(3.6°F or 1.5%rdg) [213°F to 752°F];
±1.4°C [0°C to 100°C], ±(2.0°C or 1.5%rdg) [101°C to 400°C]
O2
Range: 0 to 21 vol.%
Best resolution: 0.1 vol.%
Accuracy: ±0.3 vol.%
CO
Range: 0 to 4000 ppm
Best resolution: 1 ppm
Accuracy: ±20 ppm [0 to 400 ppm], ±5%rdg [401 to 2000 ppm],
±10%rdg [2001 to 4000 ppm]
Live Draft Pressure
Range: 0 to ±0.8 inWC
Best resolution: 0.001 inWC
Accuracy: ±(0.01 inWC + 2%rdg)
CO Air Free (Calculated)
Range: 0 to 4000 ppm
Best resolution: 1 ppm
CO2 (Calculated)
Range: 0 to CO2max vol.%
Best resolution: 0.1 vol.%
Excess Air (Calculated)
Range: 0 to 999%
Best resolution: 0.1%
Eciency (Calculated)
Range: 0 to 100%
Best resolution: 0.1%
qA (Calculated)
Range: 0 to 25%
Best resolution: 0.1%
Dew Point (Calculated)
Range: 32 to 212°F; 0 to 100°C
Best resolution: 0.1°F; 0.1°C
Primary Air Temp
Range: 32 to 212°F; 0 to 100°C
Best resolution: 0.1°F; 0.1°C
Accuracy: ±2.5°F [32°F to 212°F]; ±1.4°C [0°C to 100°C]
Ambient CO
Range: 0 to 200 ppm
Best resolution: 1 ppm
Accuracy: ±20 ppm
Manometer
Range: 0 to ±40 inWC
Best resolution: 0.01 inWC
Accuracy:
±0.2 inWC [0 to ±20 inWC], ±1%rdg [±(20.1 to 40.0inWC)]
Fuel Pressures
Range: 0 to 40 inWC
Best resolution: 0.01 inWC
Accuracy:
±0.2 inWC [0 to 20 inWC], ±1%rdg [20.1 to 40.0inWC]

3534
Limited Warranty
This device is warranted against defects in
material or workmanship for one year from date
of purchase from an authorized Fieldpiece dealer.
The O2 and CO sensors are warranted against
defects in material or workmanship for four
years from date of purchase from an authorized
Fieldpiece dealer.
Fieldpiece will replace or repair the defective
unit, at its option, subject to verication of the
defect.
This warranty does not apply to defects
resulting from abuse, neglect, accident,
unauthorized repair, alteration, or unreasonable
use of the analyzer.
Any implied warranties arising from the sale of
a Fieldpiece product, including but not limited to
implied warranties of merchantability and tness
for a particular purpose, are limited to the above.
Fieldpiece shall not be liable for loss of use of the
analyzer or other incidental or consequential
damages, expenses, or economic loss, or for any
claim of such damage, expenses, or economic
loss.
State laws vary. The above limitations or
exclusions may not apply to you.
Obtaining Service
Visit www.fieldpiece.com/rma for the latest
information on how to obtain service.
Warranty for products purchased outside of the
U.S. should be handled through local distributors.
Visit our website to nd your local distributor.

CAT85
© Fieldpiece Instruments, Inc 2022; v02