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Introduction

Initial operation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Gas path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Diagram of analyser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operating the analyser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Example of measurement

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Measuring flue gas and ambient air temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Flue gas measurement in burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Draught measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Differential temperature measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Printing the measured results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Reference section

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Setting date/time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Setting the units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Changing rechargeable batteries or batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Changing filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Condensate trap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Flue gas probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cleaning the flue gas pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Changing measurement cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-18

Error messages

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Technical data

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Accessories

22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Testo log printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Ordering data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Dear Customer

You have made the right decision by choosing the testo 325 flue gas analyser. Thousands of customers
buy our high standard products every year. There are at least 7 good reasons for doing so:

1) Cost - performance ratio. Reliable quality at a fair price.
2) Extended warranty times of up to 3 years - depending on instrument.
3) We have the ideal solutions for your measuring tasks based on our expert experience gained

over 40 years. 

4) Our high quality standard is confirmed by the ISO 9001 certificate.
5) Of course, our instruments carry the CE symbol required by the EU. 
6) Calibration certificates for all relevant parameters. Seminars, advice and calibration on location. 
7) Our after-sales service. Ask for more details.

Contents

Introduction

2

TÜV By RgG 188

Summary of Contents for 325-3

Page 1: ...Instruction manual en testo 325 3 CO F inch H2O T P 3 CO Analyzer...

Page 2: ...essories22 Testo log printer 21 Ordering data 22 Dear Customer You have made the right decision by choosing the testo 325 flue gas analyser Thousands of customers buy our high standard products every...

Page 3: ...in the analyser is free of any obstacles so that the gas can escape unhindered If this is not the case the results measured may be incorrect Condensate trap Empty the condensate trap once maximum lev...

Page 4: ...n with mains unit is possible if rechargeables batteries are empty batteries cannot be recharged in analyser Capacity display Voltage 4 6 V Service life approx 3 hours at an ambient temperature of68 F...

Page 5: ...y capacity Initialisation phase Flue gas temperature Ambient air temperature Pump measurement On Off Print button Cancel Return Draught pressure button Menu button and confirmation Temperature measure...

Page 6: ...sing the and buttons Print The measurement data in the display is printed by pressing Print I O button Press I O to switch instrument on or off A switch off message appears in the display before the i...

Page 7: ...tems which are dependent on ambient air During the initialising phase ensure that the tip of the flue gas probe is held near the burner s intake duct 2 Measuring the ambient air temperature via a sepa...

Page 8: ...te drops which develop could result in a sudden drop in temperature Remedy Position the flue gas probe horizontally After every measurement rinse the measurement cells with fresh air Pump Start Stop u...

Page 9: ...hich first has to be reduced approx 30 seconds The analyser s position should not be changed when draught is being measured Any remaining condensate in the flue gas probe must be removed shake the pro...

Page 10: ...ing Example of measurement Differential temperature measurement 10 Gas inlet red FT T2 AT T1 Mains unit connection Inlet for draught measurement blue T 140 0 104 0 Measurement menu Measurement menu Sy...

Page 11: ...325 3 12 31 1998 00 17 13 CO 0 ppm FT ______ F AT ______ F DRFT 0 00 inH2O CO 101 ppm T ______ F 00397205 Date Time Fuels Readings Example of measurement Printing the measured results Measurement men...

Page 12: ...nd return to main menu return to the main menu without taking over the settings Scroll with the arrow buttons through the main menu until you reach Dat Time Reference section Setting date time 0315 19...

Page 13: ...ible measuring units via Accept measuring unit by pressing jumps to measurement menu Cancel selection by pressing settings are not accepted Measurement menu Main menu 254 5 100 T325 3 Possible measure...

Page 14: ...move the emptying plugs to empty the condensate trap Remove empty defect rechargeable battery or empty battery from the battery compartment and replace with new rechargeable batteries or batteries War...

Page 15: ...ress on the thermocouple tube Press it into place with the help of a small screwdriver Only remove the thermocouple if it is defect The thermocouple may be damaged when pulled out by the connection tu...

Page 16: ...emoving it 3 Unlock the condensate trap and remove from housing See page 14 4 Remove filter insert See page 14 5 Remove positioning plate using a screwdriver 6 Open battery compartment and remove batt...

Page 17: ...the mounting block and the electronics to the upper part of the housing with the holder screws 2 off Put upper part of housing in position and close in the opposite direction to the arrow Insert posi...

Page 18: ...by pressing the button twice and must be pressed simultaneously within 3 seconds during the capacity display Recalibration is available from Testo service points subsidiaries and agencies 18 Maintena...

Page 19: ...r changes to non permissible values Adapt to ambient air temperature Measurement of the zero point is not stable Let the initialising phase run several times If this is not successful the CO measureme...

Page 20: ...v Max overload 1000 mbar CO measurement Measurement range 0 to 2000 ppm Accuracy 20 ppm to 400 ppm 5 of m v H2 level 10 Resolution 1 ppm Response time t90 Max 60 s typically 40 s Weight 500g Dimensio...

Page 21: ...turn from power save Self test Keep button pressed when switching on Transmission distance Adjust contrast Magnetic plate at rear of instrument Note The printer switches to power save after 10 minutes...

Page 22: ...60 mm 0600 9798 Clamp probe for meas on pipes with max diameter of 1 Tmax 100 C 0602 4692 Surface probe with sprung thermocouple band Tmax 300 C 0602 0392 Pipe clamp probe 0628 0020 Printer Testo log...

Page 23: ...23...

Page 24: ...testo AG Postfach 11 40 79849 Lenzkirch Testo Stra e 1 79853 Lenzkirch Telefon 07653 681 0 Fax 07653 681 100 E Mail info testo de Internet http www testo com 0974 3254 08 00 T wh 04 05 2004...

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