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Fieldpiece Combustion Analyzer with HydroCycle Pump and Printer CAT85K2
Fieldpiece Combustion Analyzer with HydroCycle Pump and Printer - Combustion Probe
Fieldpiece Combustion Analyzer with HydroCycle Pump and Printer
Fieldpiece Combustion Analyzer with HydroCycle Pump and Printer CAT85K2
  • SKU: CAT85K2

Fieldpiece Combustion Analyzer with HydroCycle Pump and Printer - CAT85K2

GST included.

    NOTE: This NEW Fieldpiece product will be available early 2023. Contact us to preorder.




    Tough Enough for any Heating Job

    The Fieldpiece Combustion Analyzer HC CAT85 provides a hassle-free solution for technicians to get the job done quickly, easily, and safely while improving system efficiency.

    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 flue - no more water trap hassles!

    With Wireless Thermal Printer CATPR for jobsite combustion analysis documentation.


    Breakthrough Innovations
    If you’re tired of emptying water traps, the CAT85’s flue probe Hydrocycle™ Pump automatically separates and returns accumulated water to the flu. Also, the CAT85 offers a built-in manometer so you can carry one less tool.

    Simplicity Redefined
    A new, high contrast 5.5” touchscreen display makes it easy to view measurements, whether your jobsite is a dimly lit basement or bright rooftop. You can also save customer data with dedicated fields for client information. If you require advanced diagnoses, a live trend report is available with O2, CO and CO2 readings.

    Reliable Performance
    Along with a four-year sensor warranty, the CAT85 HVAC combustion analyzer also features patent-pending SensorVault™ technology that extends sensor life by sealing the sensors from oxygen in the air during storage. If they need to be swapped out, they are field-replaceable to maximize uptime.

    Rugged Construction
    Durable construction and rubberized casing make the CAT85 tough enough to tackle any jobsite conditions. The magnetic back also lets you work hands-free and the padded hardline carrying case has multiple inserts for accessories.

    Jobsite Documentation
    Connect to Job Link® System App to view trends, draft pressure and customer details, all with 1000’ wireless range. A wireless printer is also available for jobsites that require documentation printouts.



    • Accurately measure O2, CO, CO2, draft pressure
    • Built-in manometer means one less tool to carry
    • Automatically separates and returns accumulated water to the flue using the patent pending HydroCycle™ Pump technology.
    • Lower cost of ownership with a four-year sensor warranty
    • Large 5.5” touchscreen display
    • Field-replaceable sensors to maximize uptime
    • Troubleshoot while running analysis with live draft pressure
    • Patent pending SensorVault™ technology prolongs sensor life
    • Connect with Job Link® System App, industry-leading 1000’ wireless range
    • Includes Wireless Thermal Printer



    • 1 x CAT85 Combustion Analyzer HC (including probe)
    • 1 x Wireless Thermal Printer – CATPR
    • 1 x Hard Lined Carrying case – ANC85
    • 2 x Cones – RCONE3
    • 10 x Filters – RFC10
    • 1 x USB-C Charging cable
    • 1 x Operator's Manual



    Sensors Sensor Type Response Time Max Overload
    Temperature Type K rod thermocouple (fixed) < 30 seconds (T90)  
    Oxygen (%) Electrochemical (replaceable) < 30 seconds (T90) 30% Oxygen
    Carbon Monoxide (PPM) Electrochemical (replaceable) < 90 seconds (T90) 10000 ppm Carbon Monoxide
    Pressure Probe (inWC, torr, Pa) Piezoresistive pressure sensor < 10 seconds (T90) 4.0 inWC will cause damage
    Pressure Ports (inWC, torr, Pa) Silicon pressure sensors < 10 seconds (T90) 11.6 psig (321 inWC) causes damage


    General Technical Data
    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.
    Manometer Ports 2 connectors (P1, P2) for flex tubing
    (4.5mm to 8.0mm ID, not included)
    Battery Type 3.7 VDC (nominal), 6400mAh, non-replaceable
    Battery Life 7 hours typical (pump running 80% of the time)
    Charge Time < 7 hours typical @ 5V/2A DC power (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
    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)
    Manufacturer 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.fieldpiece.com
    Printer Fieldpiece Wireless Thermal Printer (model CATPR)



    1 Year from Date of Purchase (​excludes Consumables such as Filters, Gaskets, Leads, Batteries, Fuses, Sensors, Case etc)


    Buy with 100% confidence knowing your purchase is backed by the full Manufacturer's Warranty. Please register your product with provided warranty card.



    Australia-wide Flat Rate shipping of $15.00 per order.
    This includes multiple products up to 5kg only.

    Additional cost applies for orders over 5kg. Contact us for quotation.


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