The carbon monoxide sensor used in TPI combustion efficiency analyzers feature an on-board filter capable of filtering NO (nitric oxide), NO2 (nitrogen dioxide) and NOX (combination of NO and NO2) to prevent cross sensitivity errors.
Use TPI analyzers to test flue gases in gas and oil fired equipment including high efficiency furnaces and condensing boilers. Measure CO, O2, and stack temperature.
Determine combustion efficiency, CO2, and CO air free. Built-in differential manometer, combustible gas detection, PC communication, data logging, and can measure NO / NOX.
- All the features of the 709 PLUS Rechargeable NiMH Battery
- Measure CO, and temperature
- Calculate CO2, efficiency, excess air, and CO air free
The TPI 709R Flue Gas Analyzer is a state of the art, easy to use analyzer designed not only to display and calculate the required readings from a flue but also to cover most of the other measurements associated with combustion.The instrument is ruggedly constructed and comes with a 3 Year unitand 2 Year sensor Guarantee.
The TPI 709R combustion analyzer uses state of the art electrochemical sensors. This sensor technology provides the longest lasting, most accurate and reliable means for performing combustion tests. The sensors in your analyzer will need to be replaced periodically and calibration is recommended once every year. The 709R will remind you when calibration is due by flashing “CAL DUE Err” for three seconds at start up.
Electrochemical sensors by nature are always active. Therefore the time the analyzer is off and not being used must be taken into account when determining sensor life. The sensors in your analyzer are warranted for two years. This warranty does not cover sensors damaged through misuse of the analyzer.
You should keep the batteries of your 709R fresh so power is constantly being supplied to your sensors.
The following guidelines will help prevent damage to your sensors:
- Always use the mini pump filter when testing flue gases.
- Always periodically check and replace the mini pump filter as needed.
- Always make sure the in-line filter / water trap is installed properly.
- Always periodically check and replace the in-line filter as needed.
- Always remove water or condensation from the inside of the in-line filter / water trap assembly prior to performing tests.
- Always use the optional oil filter (p/n A773) when performing tests on oil burning equipment.
- Never over saturate your sensors by performing tests on equipment with gas levels beyond the capability of you analyzer.
- Always keep the A794 water trap / filter assembly clean and replace the filter as necessary. Replacement filter part number is A794F.
The TPI 709R Flue Gas Analyzer comes complete with the following standard accessories:
- TPI 709R Instrument
- Rubber Boot (A765)
- Battery Charger (A766) – 1 each
- Soft Carrying Case (A768)
- Flue Sampling Probe (A770)
- In-Line Filter assembly installed on Flue probe (A794)
- Temperature Probe (GK11M)
- Mini Pump Protection Filter Assembly and spare filters (A763)
- Exhaust Spigot (removable) (A764)
- Instruction Manual
The TPI 709R Flue Gas Analyzer has the following options available:
- Infrared printer (A740)
- Spare In-Line Filter (A794F is a package of 5 filters)
|Model 709R Features|
|Measure CO, O2 & Flue Temperature|
|Calculate CO2, CO/CO2 Ratio, Efficiency & Excess Air|
|Dual Input Differential Manometer – Great for performing Standing Pressure or Let By/Tightness Tests|
|Dual Input Differential Thermometer – Ideal for measuring & recording Flow & Return Temperatures|
|Ambient CO Analysis|
|6 Year Warranty* (* subject to annual service being carried out each year by TPI or one of its approved local service centres)|
|Diagnostic software & technical helpline combine to save time and money on reduced downtime as many of the reported faults can be rectified over the phone keeping you and your instrument working|
|Unique external water trap filtration system as standard on all kit options preventing loss of downtime or additional costs due to potentially damaged sensors caused by water ingress|
|10 Fuel options including Wood, Light & Heavy Oil, LPG and Natural Gas|
|Will not shut off if CO ppm is above 15ppm for increased safety for both the user and the instrument|
|Unique in-line pump protection filter fitted as standard across all kits preventing loss of downtime or additional costs due to a potentially damaged pump caused by dust/dirt ingress|
|Protective rubber boot as standard to protect the FGA|
|Re-Chargeable battery housed in a separate compartment ensuring no heat transfer when using on the mains to affect gas readings|
|All kits come supplied in a soft carry case to protect not only the FGA but all of your accessories|
|Capability of sending Live or Stored readings to an optional IR Printer|
|Model 709R Specifications|
|Operating Temperature Range||14°F to +122°F (-10°C to +50°C)|
|Battery / Batery Life||Rechargeable Ni-MH / > 6 Hours|
|Charger Input Voltage||115V or 230V : 50/60 Hz AC|
|Fuels|| Natural Gas, LPG, Light Oil, Heavy
Oil, Bituminous Coal,
Anthracite Coal, Coke, Butane, Wood, Bagasse
|Pressure Ranges||mbar, kPa & inH2O|
|Display||Backlit Graphic LCD|
|Data Storage||50 sets of readings, multiple pages|
|Time and Date||24 Hour Real Time Clock|
|Dimensions||7.8” (200mm) x 3.5” (90mm) x 2.4” (60mm)|
|Casing||Rubber Boot as Standard|
|Flue Temperature Probe|
|Construction||Pistol Grip with Stainless Steel Shaft|
|Hose Length||8.2’ (2500mm)|
|Insertion Length||7.9” (200mm)|
|'K' Type Thermocouple Accuracy||+/- 0.3% of fullscale, +/- 2°F (1°C)|
|Maximum Temperature||1472°F (800°C)|
|Carbon Monoxide||0-10,000 ppm||1 ppm|| (<20ppm) +/- 3 ppm
(>=100ppm) +/- 5%
|Carbon Dioxide (calculated||0-25%||0.1%||Calculated|
|CO/CO2 Ratio||0-0.999||0.001||+/- 0.3%|
|Selectable Ranges||mbar, kPa and inH2O|
|Range||- 150 mbar to + 150 mbar|
|Resolution||0.01 mbar & 0.1 mbar|
Several factors affect combustion efficiency.
Dirty or clogged air filters reduce the amount of air available for combustion therefore reducing efficiency. Obstructions in the flue block exhaust gases and alter the air mixture in the combustion chamber which reduces efficiency. Air leaks in the combustion chamber also alter the mixture causing decreased efficiency.
The primary way to affect change in combustion efficiency when working with modern gas fired equipment is through gas manifold pressure adjustment.
Confirm manifold pressures are within manufacturers specifications prior to performing a combustion test. Once manifold pressures are within limits a combustion test can be performed to provide information regarding any adjustments that may be needed.
10,000ppm is equal to 1%.
The formula to convert percent to ppm is: ppm = %gas X 10,000. The formula to convert ppm to percent is: % = ppm / 10,000.
The 709, 712, and 714 incorporate a differential manometer.
Pressure applied to the (-) port is subtracted from the pressure applied to the (+) port. Examples of pressures being measured:
(+) port = 10″H2O, (-) port = Not Connected, Displayed reading =10″H2O
(+) port = 10″H2O, (-) port = 5″H2O, Displayed reading = 5″H2O
(+) port = Not Connected, (-) port = 10″H2O, Displayed reading = -10″H2O
The sensors in your analyzer will need to be replaced periodically and calibration is recommended once every year. Electrochemical sensors by nature are always active. Therefore the time the analyzer is off and not being used must be taken into account when determining sensor life. The sensors in your analyzer are warranted for two years. This warranty does not cover sensors damaged through misuse of the analyzer.
Frequently Asked Questions
When should I use the optional A773 oil filter?
If your analyzer is used in an oil fuel application the A773 filter should be used. This filter does not have to be removed for other fuel types.
Should I set my analyzer to net or gross efficiency?
Gross efficiency is the correct choice for applications in the United States.
Can I use any of the TPI analyzers to test for the presence of combustible gas in the flue?
Yes, the 712 has the ability to test for combustible gases in the flue.
Can I log and send test data to a computer?
Yes, the 712 and 714 have the ability to communicate to a computer by using the optional A767 infrared adapter.
Can I test for CO in ambient air?
Yes, the 708, 709, 712, and 714 can all test for carbon monoxide in ambient air.
Do any of the TPI analyzers have a built in manometer?
Yes, the 709, 712, and 714 have built in differential manometers.