Insight Plus Combustion Analyzer

Handheld Combustion Analyzer for Commercial Applications

The Insight Plus is the perfect instrument for busy residential / light-commercial technicians who need to ensure safe operating conditions and determine combustion efficiency.

  • All-in-one instrument makes combustion tuning fast and simple with readings for O2, CO, CO2, combustion efficiency, temperature and draft
  • Industry-exclusive Tune-Rite HVAC assistant analyzes combustion data and provides real-time troubleshooting suggestions
  • Automatic sensor protection helps technicians protect the analyzer in harsh environments, extending sensor life
  • Long life O2 sensor with 3 year warranty reduces maintenance costs and downtime
  • Quick and easy sensor replacement in the field reduces downtime and doesn’t require calibration gas
  • Combustion App allows users to quickly create custom reports with comments and send via email (available for Android & iOS)



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The Insight® Plus is the perfect tool for busy residential / light-commercial technicians who need to ensure safe operating conditions and determine combustion efficiency. Powered by innovative Tune-Rite® software (patent pending), the industry’s first-ever on-demand HVAC “assistant,” the Insight® Plus helps both new and seasoned technicians save money by making more thorough and efficient service calls.

The Insight® Plus includes sensors for Oxygen (O2) and Carbon Monoxide (CO), which includes a built-in NOx filter. The CO sensor can be replaced in the field without down time using pre-calibrated sensors. O2 sensors carry a 2 or 3 year warranty depending on the sensor installed. O2 sensors are field replaceable and do not require calibration. The Insight® Plus calculates values like efficiency, CO2 and CO air-free to help monitor combustion processes effectively and accurately.

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  • Product Specifications
  • Technical Library
  • Part Numbers
  • Accessories and Parts
  • Gas List
Sensors: Up to 2
Measuring Range: O2 0 To 20.9%, CO 0-4000 ppm
Stack Temperature: -4 to 1202 °F (-20 to 650 °C)
Draft / Differential Pressure: ± 40 inH2O (±10 mbar)
User Interface: Color LCD w/ backlight
Display Size: 2.8 in (72 mm)
Power: 4 × Alkaline Batteries
Run Time: 15 Hours (Alkaline Batteries)
Warm-Up Time: 30 To 60 Seconds
Digital Communications: USB 2.0 (mini-B), IrDA
Ambient Temperature: 23 to 113 °F (-5 to 45 °C)
Humidity: 15 to 90% RH (non-condensing)
Altitude: 1 ATM ± 10%
Product Dimensions (L×W×H): 8" × 3.6" × 2.3" (20.3 × 9.1 × 5.8 cm)
Product Weight: 1 lb. (0.45 kg) including batteries
Fuel Equations: Natural gas, coal, oil 2/4/6, wood, kerosene, propane, butane, LPG, B5, KOKS, LEG, biofuel, +2 optional custom fuels
Approvals: CE, EN 50379-1, EN 50379-3
Internal Memory: 100 Records
Warranty: Instrument: 2 Years (Including Sensors), O2 Sensor: 3 Years (Long-life Sensor, If Equipped)
Printer: IrDA + Bluetooth Printer (Optional)
Country of Origin: United States
Description N. Amer. Part Number Siegert (Euro.) Part Number
Fyrite® Insight® Plus Standard Kit 0024-8517 0024-8521
Fyrite® Insight® Plus Reporting Kit 0024-8518 0024-8522

All kits include:

  • Probe with 12 in. (30 cm) sample tube (approx. 6 ft. (1.8 m) total length), water trap, particulate filter and probe stop
  • Spare filters (qty. 3)
  • Protective rubber boot
  • 4 × AA batteries
  • User manual
  • Hard carrying case

 Reporting kit adds:

  • IrDA wireless printer
  • USB cable
  • Fyrite® User Software
  • 4 additional AA batteries

Generate Custom Reports with the Combustion App

Bacharach’s Combustion app, the companion app to Bacharach combustion analyzers, provides technicians the ability to generate and send customizable combustion reports from their smartphone / tablet.

Features of the Combustion App:

  • QR Code Scanner (Intech & Insight Plus only): Scan a QR code generated on the analyzer display screen for immediate creation and transmission of combustion reports
  • Wireless Bluetooth Connectivity (PCA 400 only): View real-time combustion data from your device, simultaneously save data to the mobile app and to the analyzer memory, and remotely start / stop the analyzer sampling pump
  • Set up customer profiles with facility and equipment information
  • Save and view records of test data
  • Generate reports in PDF, CSV, or XML format using saved records
  • Send or share a report file as an email attachment or to a cloud storage service
  • Include up to 10 data records in a single report
  • Insert comments for each data record in a report

Description Part Number
Sensor Exchange Program (2 years, 1 Sensor every 12 months)
CO sensor (0 – 4,000 ppm)
Sensor Exchange Program (2 years, 1 Sensor every 6 months)
CO sensor (0 – 4,000 ppm)
Sensor Exchange Program (3 years, 1 Sensor every 9 months)
CO sensor (0 – 4,000 ppm)
Sensor Exchange Program (5 years, 1 Sensor every 12 months)
CO sensor (0 – 4,000 ppm)
CO sensor (0 – 4,000 ppm) uncalibrated 0024-1593
CO sensor (0 – 4,000 ppm) pre-calibrated 0024-1616
Calibration Kit (includes variable-flow regulator, fittings and tubing) 0024-7059
O2 uncalibrated sensor (2 year) 0024-0788
O2 uncalibrated sensor (3 year) 0024-1591
O2 sensor upgrade kit (from 2 yr to 3 yr sensor) 0024-8257
IRDA Printer w/ 4x AA batteries 0024-1400
Reporting kit (includes IrDA printer, USB cable, Fyrite® User Software and 4x AA batteries) 0024-1492
Flue plugs, 5/16 in. metal (package of 50) 0024-8557
Wall adapter kit 0024-1611
Printer paper (5 rolls) 0024-1310
Probe filters (package of 3) 0007-1644
Thermocouple (10 ft., for combustion air temperature) 0104-1797
Thermocouple (1 in., for ambient air temperature) 0104-1798
Pressure measurement kit (including various pressure tips, tubing and fittings) 0024-8214
Differential pressure and temperature kit 0024-8242
Pressure hose (4 ft. of 3/16 in. I.D. tubing with female draft connector) 0024-8255
CO appliance test kit 0024-8555
Probe handle replacement kit 0024-1514