background image

• 

Combustion Display 4

• Displays CO air free (-CF-)

CO air free takes into account excess air (make up air) and
factors this out of the displayed reading. Some systems
inject extra air to ensure complete combustion. This can
dilute the CO sample resulting in a low CO reading when the
standard CO display is being read. 

This display should be used if the manufacturer specifications are stated
as CO air free. If it is used on a system that is not specified in CO air free
the displayed reading may appear abnormally high as compared to the
manufacturer specification. 

The formula for CO air free is: COairfree = (20.9/20.9 - O2 meas.) x CO meas.

Pressing the Scroll Enter key changes the display:

• 

Combustion Display 5

• Displays Temperature reading of Channel 1 (T1) 
• Displays Temperature reading of Channel 2 (T2) 
• Displays the Differential Temperature (Diff.) between ch1

and ch2 

• 'oPEn' will be displayed if no 'K' type probe is connected to

the thermocouple socket

• Press the Up Arrow Key to switch between ºC and ºF

Pressing the Scroll Enter key again will make the display return to combus-
tion display 1 (Default display)

6. During a combustion test you can save, print, and send data to a comput-
er. See pages 25 through 31. Allow readings to stabilize before saving or
printing the data. Refer to page 19 for typical test results.

7. Pressure measurements can be made during a combustion test if required.
Refer to page21.

8. After the test is complete, remove the flue probe from the test location and
allow the analyzer to purge in a fresh air environment with the probe
attached. Make sure the analyzer purges to below 15ppm. Never remove the
battery to turn the analyzer off before the purge is complete. Refer to page 9
for complete instructions.

19

5. Allow the readings to stabilize. Multiple combustion analysis displays are
available to provide the various test results. Use the Scroll/Enter Key to move
through the various combustion displays. 

• 

Combustion Display 1 (Default Start Up Display)

• Displays Carbon Monoxide (CO) reading in parts per million

(ppm)

• Displays calculated Carbon Dioxide (CO2) figure in percentage

(%)

• Displays calculated CO/CO2 (Ratio) figure. The 712 calculates

this number by first converting the CO2 measurement from
percentage to ppm. The formula for this conversion is:
CO2ppm=(CO2%*10,000). This ratio is not used in any other
calculations. 10,000ppm = 1%

Pressing the Scroll Enter key changes the display:

• 

Combustion Display 2

• Displays Oxygen (O2) reading in percentage (%)
• Displays calculated Excess Air (X Air) figure in percentage 
• Displays calculated Efficiency (Eff.) figure in percentage  
• Pressing the Up Arrow Key will toggle between Gross &

Net Efficiency 

(Note: Gross Efficiency is used in the USA)

Pressing the Scroll Enter key changes the display:

• 

Combustion Display 3

• Displays Carbon Monoxide (CO) reading in parts per million
(ppm)
• Displays Oxygen (O2) reading in percentage (%)

Pressing the Scroll Enter key changes the display: (Next Page)

18

Summary of Contents for 712

Page 1: ...712 Rev 6 x Analyzers Flue Gas Analyzer The Value LeaderTM www tpi thevalueleader com ...

Page 2: ...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 fil ter water trap assembly prior to performing tests Always use the optional oil filter p n A773 when performing tests on oil burning equipment Contents Introduction 1 General Overview 1 2 Instrument Overview 3 7 Front View 3 Keypad 4 Bac...

Page 3: ...mes complete with the following standard accessories Denotes part number TPI 712 Analyzer Rubber Boot A765 1 each installed on analyzer Soft Carrying Case A768 1 each Flue Sampling Probe A770 1 each In Line Filter Water Trap installed on Flue probe A795 1 each Disc water filter installed in water trap A794W 1 each Spare In Line Filter 1 each A794F is a package of 5 filters Temperature Probe GK11M ...

Page 4: ...the Stored Data Addresses Increases data logging time intervals Zeroes pressure reading see page 21 Moves down through the Stored Data Addresses Decreases data logging time intervals Scrolls through Combustion Analysis Displays see page 17 18 Scrolls through Function Screens Turns temperature differential calculation ON OFF see page 20 Turns ch2 temperature ON OFF see page 20 Allows you to change ...

Page 5: ...ng Port Charger Socket Connection for 220V 115V charger see page 8 T1 Socket Connection for thermocouple plug on flue probe see page 11 Connection for any K type thermocouple probe see page 20 T2 Socket Connection for ambient K type thermocouple probe see page 11 Connection for any K type thermocouple probe see page 20 Gas Sample Port Connection for Mini Pump Protection Filter and Flue Probe see p...

Page 6: ...lter or the Tubing In Line Filter for Leak Detection are not con nected to the Gas Sample Port see page 7 The instrument MUST be turned on in a clean air environment as the initial purge will set the Carbon Monoxide level to Zero and the Oxygen to 20 9 Press and hold down the Power Key and the TPI 712 will start its 30 second countdown PURGE will be displayed During the last 20 seconds of the 30 s...

Page 7: ... are The figures on pages 13 through 15 show locations for performing tests on commonly encountered equipment Remember to consult with the manufac turer of the device under test for specific test information Pressing the Func Key enables access to the different functions available on the 712 The default function is Combustion Analyzer Other available func tions are Thermometer Manometer Tightness ...

Page 8: ...on Analyzer Default Start Up Mode COMBUSTION TEST PROCEDURE Note It is recommended you perform routine general maintenance on your analyzer to ensure proper function Please refer to Appendix A for general maintenance schedule and function tests 1 Turn the 712 on in fresh air as outlined on page 8 After the initial purge cycle the 712 will default to combustion analyzer mode and combustion dis play...

Page 9: ...IONS It is important to use manufacturers recommended test locations whenever possible 15 TYPICAL TEST LOCATIONS Atmospheric Gas Fired Fan Assist Boiler Furnace Typical Test Locations Figure 1 It is important to use manufacturers recommended test locations whenever possible 14 ...

Page 10: ... within the instrument The alarm level can be changed Please see Appendix D Make sure to check the water trap periodically during testing to ensure it does not fill with condensate and empty it as necessary If the filter begins to fill during a test open the lid and empty out the condensate After closing the lid allow readings to stabilize again IMPORTANT The water trap is fitted with a water bloc...

Page 11: ...stion test if required Refer to page21 8 After the test is complete remove the flue probe from the test location and allow the analyzer to purge in a fresh air environment with the probe attached Make sure the analyzer purges to below 15ppm Never remove the battery to turn the analyzer off before the purge is complete Refer to page 9 for complete instructions 19 5 Allow the readings to stabilize M...

Page 12: ...ature ON and OFF Single Log Mode S Lg can be activated to log temperatures See section 10 oPEn will be displayed if no K type probe is connected to the thermocou ple socket The thermometer func tion allows you to per form temperature tests Function Display 1 Temperature T1 Temperature T2 Temperature Differential Temperature 21 Typical Test Results Actual test results vary depending on the equipmen...

Page 13: ...Down Arrow keys select YES if you are finished performing tightness tests or select NO if another test is to be performed Press the Scroll Enter key The pump will begin to run again regardless of selection To turn the pump off again press and hold the Up Arrow key down until the pump turns off Use the Recall and Print keys to review and print tightness tests Please refer to pages 25 26 23 Manomete...

Page 14: ...5 second countdown screen is reached The 712 will countdown from 25 The countdown may be repeated several times until the sensor initiates 1 Ensure you have the A763 Pump Protection Filter connected to the Gas Sample Port see figure below and page 7 ENSURE THAT THE PUMP PROTECTION FILTER ASSEMBLY IS IN PLACE AT ALL TIMES IN THIS FUNCTION 2 Locate combustible gas leaks by putting the inlet of the 7...

Page 15: ...al operation use the Up Down Arrow Keys to select Yes Press the Scroll Enter Key To continue recalling data from memory locations use the Up Down Arrow Keys to select No Press the Scroll Enter Key and repeat steps 1 through 4 Note During recall if Null Data is displayed there is no stored data in the address selected Select another address or perform another test and make sure data is stored as ou...

Page 16: ...ory 1 Press the Print COM Key once Real Stor and Titn will be dis played Pressing the Down Arrow Key repeatedly will cause Stor Titn and S Lg to be displayed Use the Up and Down Arrow Keys to select the desired print mode and press the Scroll Enter Key If selecting Real print mode proceed to step 3 To cancel printing press the Print COM Key use the Up Down Arrow Keys to select YES and press the Sc...

Page 17: ...com puter This requires the use of the optional A767 IRDA adapter and either Microsoft Hyper Terminal or the optional PC software part num ber A772 The 712 has two log modes available S Lg Mode Single log mode permits the 712 to be used as a carbon monoxide logger when the 712 is in combustion analyzer mode tempera ture logger when in thermometer mode and pressure logger when in manometer mode In ...

Page 18: ...uter type QTR All Caps and press ENTER 3 The 712 will send Real time data and return to normal operation 33 COMMUNICATING TO A PC This function requires the optional A767 IrDA Adapter Please refer to the A767 manual for complete instructions on using the adapter Optional soft ware part number A772 is available for use with MICROSOFT WIN DOWS or communication can be performed using MICROSOFT HYPER ...

Page 19: ...h Stainless Steel Shaft Hose Length 8 2 2500mm Insertion Length 7 9 200mm K Type Thermocouple Accuracy 0 3 1 C Maximum Temperature 1472 F 800 C 35 COMMUNICATING TO A PC Continued Requesting Tightness Test Data 1 Follow steps 1 through 3 2 From your computer type QTT All Caps and press ENTER 3 The 712 will send Tightness Test data and return to normal opera tion Requesting Logged Data 1 Follow step...

Page 20: ...e The sensors carry a 2 Year warranty This guarantee does not affect your statuary rights For addi tional information please refer to the included warranty card or contact TPI at 800 368 5719 To obtain warranty performance or maintenance on your analyzer Include with the product your name address phone number written description of the problem and proof of purchase date Carefully package and retur...

Page 21: ...W Water Block Filter Water trap lid O ring is located in the lid recess A794D Filter Spacer Disc 39 Appendix A General Maintenance All combustion analyzers use consumable items such filters and probes These items are user serviceable and can be taken care of by the operator The consumable items that will require operator attention are the water trap fil ter assembly flue probe pump protection filt...

Page 22: ...ess the Scroll Enter key until temperature is displayed If the displayed temperature is approximately the ambient temperature the thermo couple is operating properly and you may proceed to the next step to continue the test If the displayed temperature is OL the thermocouple is open and the probe is in need of factory service 4 Cover the end of the flue probe with a small piece of tube and pinch t...

Page 23: ...oo high or low Pressure sensor damaged or defective Remove pressure source Return to TPI for service oFL Overflow indication The tem perature being measured is outside the maximum mea surement capability Temperature being measured is too high or low Remove pressure source oPEn Unable to read thermocouple temperature Temperature probe not con nected to input Worn temperature sensor Connect temperat...

Page 24: ...ective Action Efficiency reading incorrect NET efficiency selected Ambient temperature probe not plugged in to T2 Incorrect fuel selected Select GROSS efficiency See page 17 Plug ambient probe into T2 See page 11 Select the proper fuel for the equip ment being tested See page 8 Readings are erratic when working on oil fired equipment Oil filter not installed or installed incorrectly Make sure the ...

Page 25: ... this procedure can be performed to try and manually initialize the sensor s WARNING Changing parameters in calibration mode can adversely affect the operation of your analyzer Follow the instructions carefully 1 Turn the analyzer on When the countdown reaches 26 press and hold down the Up Arrow Scroll Enter and Down Arrow keys together for approximately 5 to 7 seconds The analyzer will beep and F...

Page 26: ...ors This enables pressure adjustments to be made and the affect to the combustion process can be seen by returning to combustion analyzer mode Use the FUNC Key to activate manometer mode Press and hold the Up Arrow Key until the pump reactivates Perform a pressure test and then use the FUNC key to acti vate combustion analyzer mode Repeat this process until pressure adjustments are complete Note 2...

Page 27: ...ces Gas water heaters Back drafting from furnaces Wood stoves fireplaces Gas Stoves Automobile exhaust Tobacco smoke Carbon Monoxide is picked up quickly in the body by red blood cells At high lev els of CO the body replaces oxygen with carbon monoxide The most common symptoms of CO poisoning are headache dizziness weak ness nausea vomiting chest pain and confusion High levels of CO inhalation can...

Page 28: ...rcuit will result The battery pack is replaced as follows 1 Turn the analyzer over and locate the phillips head battery cover screw See picture below 2 Loosen the screw Pull out on the screw to remove the battery cover 3 Remove the old battery pack from the battery compartment Pull the battery wire out of the connector 4 Install the new battery pack by inserting the connector from the battery pack...

Page 29: ...c 9615 SW Allen Blvd Ste 104 Beaverton OR 97005 Tel 503 520 9197 Fax 503 520 1225 www tpi thevalueleader com Test Products International Ltd 342 Bronte Road South Unit 9 Milton Ontario Canada L9T5B7 Tel 905 693 8558 Fax 905 693 0888 ...

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