TESTO 325M Manuale utente

Instruction manual en

testo 325 M/XL

Flue gas analyser

Preface / Copyright

2

Preface

Dear Customer

Thank you for purchasing a Testo product. We hope you will

enjoy the benefits of this product for a long time to come and

that it will aid you with your work.

Please read this instruction manual carefully and familiarise

yourself with the operation of the instrument before putting it to

use.

If problems should occur which you cannot rectify yourself,

please consult our Customer Service Department or your

nearest distributor. We will do our best to help you quickly and

competently to reduce downtimes.

Copyright

This documentation is subject to the copyright of Testo AG.

Reproduction and use contrary to the legitimate interests of

Testo AG are prohibited without the prior, written consent of the

company.

We reserve the right to modify technical details from the

descriptions, specifications and illustrations contained in this

documentation.

Testo AG

Postfach 11 40

D-79849 Lenzkirch

General Information

Symbols

Incorrect operation of this instrument could lead to danger. Particularly important information, which

has to be observed when working with this product, is highlighted in this instruction manual as

follows:

Warnings are highlighted by a warning triangle. The Warning title indicates the danger level:

Warning! means death or serious physical injury may occur if the specified safety

measures are not carried out.

Caution! means minor physical injury or damage to property may occur if the specified

safety measures are not carried out.

Read all the warnings carefully and carry out all the specified safety measures to avoid

danger.

Notes on special cases and peculiarities in the handling of your unit are indicated by an

exclamation mark.

Standards/tests

The conformity certificate confirms that this product fulfills the guidelines in accordance with

89 / 336 / EEC.

This product is TÜV approved.

Test Code Number: testo 325 M: TÜV By RgG 218

testo 325 XL: TÜV By RgG 222

3

Warning title

Contents

4

Preface / Copyright............................................2

General information ..........................................3

Contents............................................................4

1. Basic safety instructions ..................................6

2. Intended use ....................................................7

3. Product description ..........................................8

3.1 Power supply ................................................................8

3.2 Dispaly and control elements ......................................8

3.3 Menu overview ..........................................................10

3.4 Gas path ....................................................................10

4. Initial operation................................................11

4.1 Putting in rechargeable batteries / batteries ..............11

4.2 Connecting the mains unit..........................................11

4.3 Connecting sensors / probes ....................................11

5. Basic instructions............................................12

5.1 Switching on ..............................................................12

5.2 Selecting menu items ................................................12

5.3 Measuring ambient air temperature ..........................12

5.4 Measuring flue gas temperature ................................13

5.5 Regular maintenance ................................................13

5.6 Switching off ..............................................................14

6. Settings ..........................................................15

6.1 Selecting fuel..............................................................15

6.2 Setting display sequence ..........................................15

6.3 Selecting units............................................................16

6.4 Setting date/time ........................................................16

7. Measuring ......................................................18

7.1 Measuring flue gases ................................................17

7.2 Measuring pressure....................................................17

7.3 Measuring differential temperature ............................18

7.4 Measuring undiluted CO ............................................19

7.5 Measuring ambient CO ..............................................19

7.6 Printing readings taken ..............................................20

7.7 Saving/reading/deleting readings ..............................21

7.8 Printing saved readings..............................................22

Contents

8. Maintenance ..................................................23

8.1 Changing rechargeable batteries/batteries ................23

8.2 Emptying the condensate trap ..................................23

8.3 Changing the filter ......................................................24

8.4 Cleaning the analyser ................................................24

8.5 Cleaning the flue gas probe ......................................24

8.6 Changing the thermocouple ......................................25

8.7 Cleaning the flue gas pump ......................................25

8.8 Changing the measuring cells....................................26

9. Troubleshooting ..............................................29

10. Technical data ................................................31

10.1 Measuring ranges and accuracies ............................31

10.2 Other instrument data ................................................32

10.3 Calculation fundamentals ..........................................32

10.4 Calculation formulae ..................................................33

11. Accessories / Spare parts................................34

Short instructions............................................35

5

1. Basic safety instructions

6

Avoid electrical hazards:

Never make measurements with the unit and its external probes on or near live components

unless the unit is expressly approved for current and voltage mesurements.

Use only the supplied power supply unit when using the instrument under mains power.

Allow only authorised persons to replace damaged mains cables.

Protect the unit/measuring cells:

Never store the unit together with solvents (e.g. acetone).

The condensate trap should be emptied once the maximum line has been reached. Switch off the

pump to empty.

Measure correctly:

Prior to every measurement, check the complete measurement system (probe, condensate trap,

hoses and connections) for leaks in order to avoid incorrect measurements caused by the intake

of air.

Ensure that the gas output in the instrument is always free of obstacles so that the sample gas

can escape unhindered.

Preserve product safety/warranty entitlement:

Operate the instrument only within the parameters specified in the technical data.

Please handle the instrument with care.

Force should never be applied.

The temperature data for the probes only refer to the sensor measuring range. Never subject

handles or pipes to temperatures greater than 70°C unless they are expressly approved for higher

temperatures.

The instrument should only be opened for maintenance and repair work if expressly described in

the Instruction manual.

Only carry out the maintenance and repair work described in the Instruction manual. Please follow

instructions. For safety reasons, only original spare parts from Testo should be used.

Any other work should only be carried out by authorised trained personnel. Otherwise

responsibility for the perfect functioning of the instrument following repairs and for the validity of

approvals will be denied by Testo.

Ensure correct disposal:

The measuring cells contain low concentrations of alkaline solutions and acids. Please dispose of

carefully.

Dispose of defective rechargeable batteries and spent batteries responsibly.

You can return your instrument directly to us at the end of its service life. We will dispose of it

responsibly.

2. Intended use

Employ the analyser for the following applications only:

testo 325 M / XL is a hand-held instrument for the professional

analysis of flue gas in burners:

- Small-scale burners (oil, gas, wood)

- Low temperature and condensing boilers

- Gas heaters

These systems can be adjusted using testo 325 M / XL and

checked for their adherence to valid limit valids.

testo 325 M / XL can be used to carry out the following tasks:

- Adjustment of O2, CO and CO2values in burners in order to

guarantee smooth operation

- Measurement and adjustment of gas flow pressure in gas

heaters

- Measurement and adjustment of flow and return temperatures

in heating systems

7

3.1 Power supply

testo 325 M / XL can be powered as follows:

- 4 batteries (1.5V round cell alkaline IEC LR6 Type AA)

- 4 rechargeable batteries (1.5V IEC KR 15/51 corresp. Type AA)

- Mains connection via mains unit (Part no. 0554 1084)

- Rechargeable battery pack (testo 325 XL only)

3.2 Display and control elements

Display

3. Product description

8

Time

Print

Battery capacity

Flue gas temperature

Ambient air

temperature

Temperature

measurement

Date Fuel name/

menu item

Parameters

Measuring units

Pump on

Readings

Save

Battery capacity

A warning flashes in the display if the battery is running low

during rechargeable batttery/battery operation:

Remaining capacity is then approx. 1 hour for batteries, approx.

1 hour for rechargeable batteries

The instrument switches itself off automatically when the

rechargeable battery/battery capacity is too low, in order to

protect from total discharge.

Parameters

3. Product description

Keyboard

➀Start/stop flue gas pump

➁Select display, select menu items

➂Switch analyser on/off

➃Interrupt operation, return to superior menu level

➄Open main menu / sub-menu / menu item, confirm selection

➅Select parameters

➆Print current readings

➇Switch display light on/off

Connections

➀Mains unit

➁Probes: ambient air temperature (AT) / temperature T2

➂Probes: flue gas temperature (FT) / temperature T1

➃Flue gas (red)

➄Pressure + (blue)

➅Pressure - (p-)

Other

➀Infrared interface (on front side)

➁Gas outlet

➂Battery compartment

➃Condensate trap

➄Filter (behind the condensate trap)

9

➂

➃

➁➇

➁

➅➄

➆

➀

➂

➃

➁

➄

➀

➅

➂

➃

➁

➄

➀

Memory 1

delta p

delta t

View

Fuel

Dat/Clk

Unit

co amb

co undil

3. Product description

10

3.4 Gas path

P

CO O2

p

testo 325

RGS

testoter

m

3.3 Menu overview

Nat gas

L oil

H oil

LPG

Butane 1

Coal 1

Measurement

view

Main menu

Pressure

Temperat

Gas

delta p1

delta p2

Line 1

Line 12

·

·

·

Measurement

menu Sub-menus

memory1

memory20

·

·

·

1(testo 325XL only)

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