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709 Combustion Efficiency Analyser with Differential Manometer

The TPI 709 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.

  • All the features of the 708 PLUS high resolution 0.001 in H20 differential manometer for high efficiency and oil equipment
  • Calculates combustion efficiency
  • Pump driven for fast response
  • Will not shut off if 15 ppm CO is present for increased safety
  • Optional A740 IR printer available for hard copies of test results
  • Built-in differential thermometer
  • Store function to save up to 50 readings
  • Push on fittings for fast and easy use
  • Large easy to read backlit display
  • Ten selectable fuels

$549.95
USA Suggested List Price

Tequipment.net
Grainger
Digi-Key Electronics

The TPI 709 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 709 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 709 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 709 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 709 Flue Gas Analyzer comes complete with the following standard accessories:

  • TPI 709 Instrument
  • Rubber Boot (A765)
  • 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 709 Flue Gas Analyzer has the following options available:

  • Infrared printer (A740)
  • Spare In-Line Filter (A794F is a package of 5 filters)

709 Features

  • Built-in differential manometer with 0.001” H2O resolution
  • Calculates combustion efficiency
  • Pump driven for fast response
  • Will not shut off if 15 ppm CO is present for increased safety
  • Ten selectable fuels: Natural Gas, LPG, Light Oil, Heavy Oil, Bituminous Coal, Anthracite Coal, Coke, Butane, Wood, Bagasse
  • Optional A740 IR printer available for hard copies of test results
  • Built-in differential thermometer
  • Store function to save up to 50 readings
  • Large easy to read backlit display
 Model 709 Specifications
 Carbon Monoxide (CO)
 Measurement
 Range 0 to 10,000 ppm
 Resolution 1 ppm
 Accuracy +/-5ppm or 5% of reading whichever is greater
 Oxygen (02) Measurement  Range 0 to 25%
 Resolution 0.1%
 Accuracy ±0.3%
 Carbon Dioxide (CO2)  Range 0 to 25%
 Resolution 0.1%
 Calculated Value
 Nitric Oxide Measurement  N/A
 NOX Measurement  N/A
 Temperature Measurement  Range -40 to 1472°F, or -40 to 800°C
 Resolution 1°F or °C
 Accuracy (K-type) ±0.3%, ±2°F or ±1°C
 Draft/Pressure
 Measurement
 Selectable Ranges mBar,kPa, and inH2O
 Ranges -150 mBar to +150 mBar -15 kPa to +15 kPa -60
 inH2O to +60 in H20
 Resolution 0.001 inH2O
 Accuracy ±0/5% fsd
 Gross/Net Efficiency  Range 0 to 100%
 Resolution 0.1%
 Calculated Value
 CO/CO2 Ratio  Range 0 to 0.999
 Resolution 0.001
 Calculated Value
 Operating Temperature  14°F to 122°F (-10°C to 50°C)
 Battery Type  1.5V AA (3)
 Selectable Fuels  Natural Gas, LPG, Light Oil, Heavy Oil, Bituminous Coal,
 Anthracite Coal, Coke, Butane, Wood, Bagasse
 Display Type  Backlit 3 line LCD
 Data Storage  50 Locations
 Data Logging  N/A
 Print Capability  Yes, via optional IR printer (A740)
 PC Communication  N/A
 Date and Time Function  24 Hour Real Time Clock
 Dimensions  200mm x 90mm x 60mm
 Weight  500g
 Conformity  BS7927 (and the draft BS7967)

Tech Tips

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

Sensor Calibration
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.

TPI Model 709 Demonstration Video

Product Documentationpdf-icon1

Click below to view or download product documentation PDFs:

709 Manual

709 Data Sheet

709 Quick Reference

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