TESTO 300 M-I User manual

Instruction manual en
testo 300 M-I and XL-I

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Initial operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Gas path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Diagram of analyser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating the analyser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Recharging the rechargeable battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Menu overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Gas path switch function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Compact gas drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Compact gas preparation unit for SO2measurement with hose (optional) . . . . . . . . . . . . . . . . . . . . . . . . 13
Diagram of the compact gas preparation unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Information on applications and warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Measurement example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Measuring the flue gas and ambient air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Flue gas measurement on burners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Flue gas measurement (°C, O2, CO2) and CO/NO/SO2measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SO2measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Printing the measured results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Saving the measured results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Differential pressure measurement, max. 80 hPa/mbar (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Velocity measurement (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Dew point measurement (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table of dew point values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Differential temperature measurement (testo 300 XL-I only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Ambient CO measurement (testo 300 XL-I only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Leak detection probe (testo 300 XL-I only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Reference section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Menu: Smoke spot number, oil derivatives, heat carrier temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Memory menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Selecting existing designators from “LIST” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Creating new designators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Using existing designators as a model for new designators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Reading in a designator with the barcode pen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Saving spontaneously without selecting a designator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Deleting saved measurements/designators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Viewing saved measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Deleting the complete memory contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Printing saved measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
OPTION: Memory upgrade ((testo 300 XL-I only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fuel menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Fuels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Settings menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Display sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Measuring units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Date/Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Printer (testo 300 XL-I only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Print text (testo 300 XL-I only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
NO2addition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Dew point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Mass flow coefficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Technical information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Contents
3

Service menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Switch-off limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Operation values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Deleting the memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Recalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Baud rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Data transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Condensate trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Flue gas probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
Flue gas probe with coarse filter / compact gas preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Manual emptying of condensate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Recalibrating CO/NO/SO2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Changing O2, CO, and NO measuring cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Upgrading/Installing CO/SO2measuring cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Upgrading/Installing an NO measuring cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Changing the battery or rechargeable battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Calculation information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Cross-sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Attachable printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Ordering data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
4
Analyser conforms with EN 50 082-1 and EN 50 081-1
Contents
Introduction
Dear Customer
You have made the right decision by choosing a measuring instrument from Testo. 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.
Refer to Testo`s “Ambient Air Measurement for Practical Users” technical
manual, available free of charge, for information on air velocity, volume and mass
flow.

Warnings
Initial operation
5
Operating with rechargeable battery
The built-in rechargeable battery should be completely recharged (see rechargeable battery display
during calibration phase) before the first measurement and following breaks in operation lasting
several days. If operation is stopped for longer periods of time, the rechargeable battery should be
recharged at least every 4 weeks in order to avoid total discharge.
Operation via plug-in mains unit
Only the original mains unit should be used when operating the analyser. Damaged mains
cables should only be replaced by original mains cables available from the manufacturer
or distributor (i. e. from an authorised service point).
Flue gas probes
Only flue gas probes with an integrated condensate trap or the testo compact gas drier can be connected to
testo 300-I. If a probe without an integrated filter and condensate unit is connected, the analyser will break
down.
Tightness
The complete measuring system (probe, condensate trap, hoses and connections) should be checked for
tightness before every measurement, e.g. by attaching a pressed in rubber bladder. Inleaked air can result in
false measurements.
Gas outlet
When measuring ensure that the gas outlets of the analyser are uncovered so that the gas can escape. If this
is not the case the results measured could be false.
Condensate trap
The condensate trap should only be emptied with the pump switched off (otherwise this could be dangerous
for the measuring cells)!
Measuring cells
Small amounts of concentrated acids are found in the measuring cells (except in the O2sensor →alkaline
solution) and should be disposed of responsibly.
Analyser
If the analysers are kept in rooms where solvents are stored this may destroy the measuring cells.
FG = Flue gas
°C FT = Flue gas temperature
°C AT = Separate ambient air temperature
Gas path

Initial operation
Diagram of analyser
6
Status
display
Prints
Cancel/
Restore
Gas
outlet
Memory
display
Meas. value
display/
menu display
Confirms
Light for
display
Pressure inlet “P1” for
measuring differential
pressure (³P) or velocity
CO switch off function
(testo 300 XL-I only)
(for measuring O2, NO, SO2at
high CO concentrations)
“P2” for
³P
measuremen
t
(blue)
Gas
inlet
(red)
Connection for temperature
probe of flue gas probe or
“Temperature 1” (³T)
measurement
Connection
for mains unit
Arrow buttons
On/Off button
Function button F1
Function button F2
Function button F3
CO cell in
fresh air
CO cell in
gas path
Function
toolbar
Operation
display
Infrared
interface
Attachment
for printer Connection for additional probes
• Ambient air probe
• Leak detection probe
• CO probe
• Temperature probe for
“Temperature 2” (³T meas.)
Serial interface
(RS 232) for connection
to PC
DP
testo 300 XL-I
NONAME
FFTT
MEMORY
AT!
Gas
outlet

Operating the analyser
Initial operation
7
Operation of the testo 300-I is organised such that you can always recognise the button functions in the display.
The keyboard
The function buttons enable you to quickly change instrument functions and to completely control the
measurement. The function behind the function buttons are shown in the function toolbar. Not all of the function
buttons in every menu have been assigned. Arrows ( or ) left or right above the function toolbar indicate that
there are additional functions in the menu.
These additional functions are displayed by pressing the left arrow button or right arrow button
and are activated via the function buttons.
With the up /down arrow buttons you can scroll between the reading windows (in the
measurement menu) or you can select a menu item from a list. If you have arrived at the last window/menu item
you will automatically return to the first window or the first menu item.
Via the print button you can print the measurement shown on the display. The data is printed either on
the attachable printer or on the desktop printer depending on the preset printer type (see the Chapter on
printing the measured results).
The analyser is switched on or off with the I/O button . Before the final switch-off, the switch-off message
appears in the display. You can still prevent the analyser from being switched off by pressing any button except
. The analyser then returns to the measurement menu.
Via the button, you can cancel selected processes or items or leave submenus. If you leave a submenu,
by pressing you can usually go back one menu window until you are in the main menu.
The selection and execution of the chosen function is confirmed by the Confirm button . If you wish to go
from the measurement menu to the main menu simply press the button.
The light for the display can be switched on and off via the light button or the automatic time function is
started (See Settings, “Light” Chapter) .
The display
All of the important information is shown constantly in the display.
In the measurement menu 4 measured values per window are shown in the measured value/menu display
range. When the zoom function is used (via function button) only two measured values are shown but in a
larger font.
The function toolbar describes the various function buttons. The assignment changes according to the menu.
The description of the function buttons in the display changes accordingly.
The arrows ( or ) left and right above the function toolbar indicate that there are additional functions in the
menu.
The operation display describes, with the help of graphics, the current analyser mode, e.g. indicates in which
menu you are, whether the analyser pump is operating and whether the instrument is mains operated. The
symbols are as follows:
Measurement menu ⊂Mains operation Main menu
Fuel selection ⊃ ⊂ Service menu
Memory menu ↵Input/Settings
Pump is operating
You can always see which memory place has been selected and which is active in the memory display box.
The number of measurements already saved under this memory place name is shown along with a serial
number. If a memory place has not been selected “Noname” appears in the display.
Error messages appear in the status display on the left. The measured value window in which you are located
is indicated on the right side of the measurement menu e.g. 2/5 means that you are on page 2 out of a
possible 5.
▲
▲
▲
▲

Inputting numerical values
The cursor first turns up at a position on the respective digit. With the arrow
buttons and you can increase and decrease the numerical value.
Example: 0.2 ➞➞0.3
If you keep the button pressed the values will increase or decrease. If the
number 9 or 0 is exceeded the values will be counted on by one decimal
place.
Example: 19.9 ➞➞20.0
Using the arrow buttons and the respective decimal place can be
reached and changed.
Example: 110.5 ➞➞110.5 ➞➞210.5
Text input (alphanumeric characters)
The respective required character is selected from the list of all available
characters via the , , , arrow buttons and is
transmitted to the text line via STORE.
The last character in the text line is deleted via DELETE. Once the text is
input, save the complete text line with .
Maximum 20 characters per text line are visible. More characters can be
entered in some cases. The text line then moves automatically to the left.
Initial operation
Operating the analyser
8
SSN/Heat carrier temp.
HHeeaattccaarrrriieerrtteemmpp..::006600°°CC
TEXT INPUT
DELETE STORE
TEXT INPUT
DELETE STORE

9
Power supply
Initial operation
testo 300 can be operated with:
a. Testo rechargeable battery (part of delivery)
b. Standard rechargeable batteries or batteries
c. Testo mains unit 0554.0054
a
b
C
Testo rechargeable battery
- The Testo rechargeable battery is recognised by the analyser and is
optimally recharged. The analyser can remain connected to the mains if the
rechargeable battery is full. Compensation charge follows.
1) Display for battery level during the initialising phase or
2) Query “Operation values” menu
Battery lifetime (with fully recharged battery): approx. 4 hours (depending
on use of display light)
Standard rechargeable batteries or batteries
- As an alternative to the Testo rechargeable battery, the standard
rechargeable battery (1.5V IEC KR 15/51) corresponding to type AA or
battery type (1.5V MIGNON Alkaline IEC LR6 •AA• ) can be used.
- Standard rechargeable batteries cannot be recharged in testo 300.An
external recharger must be used.
- No display of the rechargeable battery level in the initialising phase.
Voltage levels can be called up in the “Operation values” menu.
Testo mains unit (0554.0054)
- Ensure that the contact in the testo 300 connection plug is good ( ⊂).
- The rechargeable battery or battery must be in the analyser.
- Mains operation with empty rechargeable batteries possible.
Recharging the rechargeable battery
(only in ambient temperature range of between 5°C and 45°C)
a. Analyser is switched off, Testo rechargeable battery in use
b. Power supply via mains, analyser is switched on, then switched off, Testo
rechargeable battery is used.
c. Standard rechargeable batteries or batteries.
Recharging in the analyser is not possible.
Recharge via external recharger.
60 s
Since the NO measuring cell (if present) is constantly supplied with
voltage from the rechargeable battery inside the analyser the
rechargeable battery must be regularly recharged.
It is normal that the mains unit heats up. If temperatures are too high
(e.g. on account of an error in the analyser) the mains unit is protected
against overheating by a thermal protection switch.
The display for the rechargeable battery may drop to 1/2 or 2/3 after being
switched on or after a brief operating time caused by the characteristics
of the battery or the starting current. However, this does not affect the
life of the rechargeable battery.
12
Compensation
charge
Compensation
charge
60 s
max.
3 hrs
max.
3 hrs
Charging accu...
Charging accu...
Charging accu... Charging accu...
Charging accu...
Accu recharged
Accu recharged
Instr. switches
itself off

Initial operation
Menu overview
10
Measured values
are saved under
active (selected)
designator.
only with testo 300 XL-I
only with testo 300 XL-I
Selection possible via
the initialising phase
60
s
3 s
SSTTAARRTT
*
LLeeaakkddeetteeccttiioonn
pprroobbeemmooddee
aaccttiivvaatteedd
DDaattaaiissssaavveedd
*
See further procedure
in “Measurement
example” Chapter on
page 21
MMaakkeesseennssoorr
pprreessssuurreelleessss
PPrreessss<<OOKK>>
DPP
³PP
XXLL--II
Initialise...
G detect STOP
DP
GGaassppaatthhsswwiittcchh
ttooOO22,,CCOO,,NNOO
PPrreessss<<OOKK>>
Initialising...
AT !
2244..44°°CCAATT
AAccccuu
RReemmaaiinn..ttiimmee::4466ss
FFUUEELLLLIISSTTDDAATTEE//TT
O2ref
HHeeaavvyyffuueellooiill
NNaattuurraallggaass
LLPPGG
LLiigghhttffuueellooiill
AAccccuu::NNOONNAAMMEE
FFTT
MEMORY
NONAME
MEMORY NONAME
MEMORY
AT
AT !
AT !
FFTT

BBAAUUDDRRAATTEE
Menu overview
Initial operation
11
OK
(testo 300 XL-I only)
Please refer to the corresponding chapter in the reference section for the submenus
ZZOOOOMMDTT
ESC
Service
Settings
Fuel
Memory
SSN/Heat carr. temp.
23.0 11//66
SSEERRVVIICCEE
NONAME
FFTT
SSN/Heat c.t..
MMEEMMOORRYY
FFUUEELL
SSEETTTTIINNGG
SSN/Heat carr. temp.
SSSSNN
SSSSNN
SSSSNN
OOiilldd
SSSSNN
NNOO
STORE
HH..CC..TT..
NNEEWWDDEELLEETTEEEEDDIITT
O2ref
HHeeaavvyyffuueellooiill
NNaattuurraallggaass
LLPPGG
LLiigghhttffuueellooiill
OO22rreeff
MMEEAASS..UUNNIITT
DDAATTEE//TTIIMMEE
PPRRIINNTTEERR
DDIISSPPLLAAYY
DDiiffff..tteemmpp..
OOPPEERRAATTIIOONNVVAALLUUEESS
DDEELLEETTEEMMEEMMOORRYY
RREECCAALLIIBBRRAATTIIOONN
CCUUTTOOFFFFTTHHRREESSHHOOLLDD

The gas path switch facilitates the complete separation of the CO/SO2
cell from the gas path. The CO cell is therefore protected from very high
CO concentrations. The remaining flue gas data can still be measured.
This gas path switch function is ideal in combination with the adjustable
switch off function of the pump at high concentrations
(see reference section ➝Service menu ➝Switch off limits).
The CO, NO, SO2and O2cells are subjected to gas.
The CO cell is located outside the gas path.
Even if the CO cell is outside the gas path, low CO values can be shown
in the display. However these have no meaning.
Initial operation
Gas path switch function
(testo 300 XL-I only)
Compact gas drier
for long-term measurements of CO2, CO, NO
12
The small but effective gas drier prevents damage caused by
condensate in the analyser. This can occur especially in measurements
on systems with low flue gas temperatures (e.g. low temperature
heating systems and condensing furnaces). It is used instead of the
condensate trap. Preparation of the sample gas via the gas drier leads
to a high level of condensate precipitation. The condensate is collected
in the housing and is emptied by removing one of the end pieces.
If carrying out long-term measurements lasting several hours the
use of the automatic condensate emptying unit is necessary, i.e.
the compact gas drier 0632.3371.
When using the compact gas drier you only have the option of
one mains unit (0554.0079) (see diagram below)
Mains unit sockets for
connecting mains unit and
the power cable of the
hand-held analyser (can be
plugged in as required)
Electrical connection cable
Use the compact gas drier
instead of the condensate trap
Hose (red)
LED 1 LED 2
SO2/O2/NO
O2/CO/NO/SO2
O2/CO/NO/SO2
SO2/O2/NO
0
I
For the calibration phase, the gas path switch must be at the
O2/CO/NO/SO2position i.e. the CO cell must be in the gas path.
Otherwise the CO cell will not be rinsed with fresh air and the values
measured in subsequent measurements will be false.
Mains unit

13
Initial operation
Diagram of the
compact gas preparation unit
The compact gas preparation unit and the SO2 hose ideally complement
the testo 300 M-I and testo 300 XL-I flue gas analysers ensuring
efficient and correct measurement of the SO2level in flue gases.
The system consists of an adapted unit with gas hose, compact gas
preparation unit and non-heated standard flue gas probe or the high-
standard industrial flue gas probe.
The miniaturised gas preparation unit is integrated into the end of the
hose. It cools the sample gas using the Peltier cooler very quickly thus
dehumidifying the sample gas. This means that the SO2cannot be
absorbed by the water (reduction of absorption to a minimum). The
condensate builds up in the housing and is emptied by removing one of
the end pieces. The dry sample gas is filtered through a fine filter which
also serves as a water barrier (automatic emptying).
The use of a compact gas preparation unit with automatic condensate
emptying (peristaltic hose pump) is required for long-term
measurements lasting several hours if the measurement cannot be
interrupted for the purpose of emptying the condensate.
Use filter pipes with a coarse filter for dirt ingressed flue gases. Dirt
ingress in the gas paths is thus prevented. The hose is a specially
constructed path in which SO2 absorptions do not occur on account of
the high gas velocities.
Patented
Diagram
of the compact gas preparation unit
Ventilator
Peltier
element Heat sink
Fine particle
filter
Dry
and
cold
gas
Condensate
collection container
Condensate
moist
and
warm
gas
Compact gas preparation
for SO2measurement with hose (optional)

Measuring system
Dry and clean sample gas containing full SO2 concentrations are
produced from moist and dirty flue gas via the measuring system:
• flue gas probe with coarse filter
• special gas path
• compact gas preparation unit
A special version of the compact
gas preparation unit is available
(see ordering data) for connection
to the industrial flue gas probe. The heated
industrial flue gas probe is, for example,
used for measurements in moist flue gas
with a low flue gas temperature.
Flue gas probe
with penetration depth of 300 mm
or 700 mm available
Probe tip with coarse filter and
integrated temperature probe
Compact gas preparation unit
Available with manual or automatic
condensate emptying function
Ventilator for
quick heat
transport
Exchangeable
fine particle filter
with water block
Heat sink
Diagram not true to scale
Condensate
outlet
LED
function
display
The automatic condensate
emptying unit efficiently pumps
out the condensate which
develops during long-term
measurement
<< Dry and
clean sample
gas <<
>> Moist and coarsely
filtered sample gas >>
<< Moist and coarsely filtered sample gas <<
On/Off
switch
Universal mains unit
testo 300-I
PPoowweerrccoonnnneeccttiioonnccaabbllee
Using this cable testo 300-I can be
supplied with power via the
universal mains unit.
Moist and dirty flue
sample gas
<< <<
Industrial flue gas probe (heated)
14
Initial operation
Compact gas preparation unit
for SO2measurement with hose (optional)
Special
gas path
facilitates high
gas velocities
and thus
prevents
absorption.
NEW:
Heated hose is
unnecessary.

Operation
Operation is only via mains unit (Part no. 0554.0143). The testo 300-I
can also be operated via the connection cable (Part no. 0449.0034)
without an additional mains unit. The rechargeable battery in the
instrument can be recharged via this mains unit even when the gas
preparation unit is switched off.
Connect the plug and gas screw connection to the analyser. Ensure that
all screw connections and the probe are screwed in properly so that the
gas path is leak-proof. Switch on the instrument and wait unitl the green
LED lights up indicating it is ready to operate. It is not possible to
measure until this point.
Information on applications and warnings
- Thanks to the water block integrated in the PE filter, the analyser is
protected from flooding If flooding does occur, change the PE filter
with the water block
- Do not cover the ventilator mounted on the cooler with cloths or
similar. Risk of overheating!
- Avoid dropping the compact gas preparation unit on hard surfaces.
This could damage the housing.
- When carrying out mounting work on the gas preparation unit ensure
that the sealing rings are not damaged and that the trap lids do not
get mixed up by mistake.
- When the hose pump is used, the compact gas preparation unit must
be in the right position (pump at the bottom).
- Avoid heating up of the compact gas preparation unit via radiation
heat.
- Avoid letting the probe handle hang down since condensate can get
into the gas path when the instrument is switched off.
- The design of the compact gas preparation unit determines the
direction of flow (observe the arrow at the bottom of the gas
preparation unit). If the gas flows in the opposite direction, the system
will not function properly.
- The compact gas preparation unit can only be operated with probe
which have a coarse filter. Otherwise there is a risk that the SO2will
be incorrectly measured.
15
Initial operation
Compact gas preparation unit
for SO2measurement with hose (optional)

The flue gas temperature is measured via the thermocouple at the top of
the flue gas probe. The probe has openings in this area in the probe
pipe so that the thermocouple is protected but at the same time comes
into contact with flue gas.
There are two ways of measuring the ambient air temperature with
testo 300-I:
1. Measuring the ambient air temperature via the flue gas probe
The temperature is already being measured during the initialising
phase and is shown in the display.
The temperature measured by the flue gas probe is interpreted by
the testo 300-I as the ambient air temperature and is saved as
the ambient air temperature value once the initialising phase is
completed. All of the dependent variables are calculated with this
value.
Note in the status line.
This type of ambient air temperature measurement is sufficient for
systems which are independent of ambient air.
During the initialising phase, ensure that the flue gas probe is held
near the burner´s intake duct.
2. Measuring the ambient air temperature via a separate ambient
air probe
The probe is connected to the additional probe socket at the side
connection panel of testo 300-I. As soon as a separate
temperature probe is inserted, the temperature is automatically used
as the ambient air temperature and is continuously measured.
AT!
wrong
Flue gas flow
thermocouple
wrong
right
right
In order to measure the exact flue gas temperature and therefore be
able to measure the exact flue gas loss, the thermocouple should
always lie in the flue gas flow. It should not be covered by the probe
pipe frame.
Measuring the flue gas and
ambient air temperature
Measurement example
The tip of the thermocouple should not touch the protection casing.
Bend back the tip of the thermocouple if necessary.
16
Initialising...
AT
AATT
AAccccuu::
FFUUEELLLLIISSTTDDAATTEE//TT
RReemmaaiinn..ttiimmee::4466ss

17
Flue gas measurement on burners
“Self test”
Connect...
Measure
Switch on...
“Analyser
initialising”
Fuel selection
Selection list/
memory designator
Measurement
menu
➊➋
➌
➍
➏
➐
➎
60 s
3 s
Date/Time
Example:
A separate ambient air probe is not used during the initialising phase
of testo 300-I. A separate probe is connected during the
measurement. The value measured by this probe is used immediately
as the ambient air temperature.
The status display disappears.
A separate ambient air temperature probe is required for ambient air
which is supplied pre-heated to the burner.
Special probes are available for this purpose:
a. Ambient air probe, 300 mm long ................................0600.9791
b. Ambient air probe, 100 mm long..................................0600.9797
The
c. Separate stub probe ....................................................0600.3692
can also be used for continuous measurement of the ambient air
temperature.
AT!
Measuring the flue gas and
ambient air temperature
Measurement example
SSTTAARRTT
00
XXLL--II
Initialise...
G detect
HHeeaavvyyffuueellooiill
NNaattuurraallggaass
LLPPGG
Light fuel oil
O2ref
Initialising...
AATT
AAccccuu::
RReemmaaiinn..ttiimmee::4466ss
FUEL LIST DATE/T
MEMORY
AT!
AT!
FFTT
DPP

18
Flue gas measurement (°C, O2,CO
2)
and CO/NO/SO2measurement
Measurement example
➑
3. You can call up the various measured values via the arrow buttons
and
4. If the measured values do not change, stop the pump.
Place flue gas probe in fresh air.
The measured values remain until you start the pump again by
pressing .
Note on SO2 measurement
- Use probe with special hose for SO2measurement (short-term
measurement)
- Use gas drier for long-term measurement.
- Special filter pipe for SO2measurement.
Ordering data on page 68 “Upgrade for flue gas probes to SO2.“
1. Start measurement by pressing START.
2. Place flue gas probe in the centre of flow:
Search for the max. flue gas temperature FT and then fix the probe
with the cone in this position.
If the flue gas probe is in a vertical position or at an angle of 45° the
condensate drops which run down could result in a sudden drop in
the temperature.
Remedy:
Secure the flue gas probe as shown opposite.
After every measurement rinse the measuring cells with fresh
air (Pump Start/Stop) until the O2level is over 20.0 %
and CO and NO levels are below 50 ppm.
SSTTAARRTT
SSTTAARRTT
00
Measurement menu
AT!
MEMORY
NONAME
AT!
MEMORY
NONAME
AT!
MEMORY
FFTT
FFTT

Measurement example
SO2measurement
19
The testo 300 I can also be fitted with an SO2measurement module
instead of the NO measuring cell.
The following combinations are possible:
- O2/ CO
- O2/ CO / NO
- O2/ CO / SO2
The combination O2/NO/SO
2is not possible due to technical reasons.
Notes on SO2 measurement
Please note the following with regard to the high absorption of SO2gas:
1. Only use the special, patented hose between probe and analyser
(only for short-term measurements up to 10 minutes, afterwards
place dry filters in the condensate trap).
2. It is recommended to use the compact gas drier instead of the
condensate trap for highly accurate measurements or long-term
measurements lasting up to several hours.
3. Since flue gases containing SO2usually also contain dust, the use of
of an outer pipe with filter is also recommended in order to prevent
deposits in the hose.
4. High NO2levels (>10 ppm) in flue gas influence SO2measurement
(-110% cross-sensitivity that means add 110% NO2display to the
SO2display).
Using the NO or SO2module in one analyser
Only use NO module or SO2module. Simultaneous use is not possible.
Procedure:
1. Measurement with NO cell
2. Switch off instrument and replace NO module with SO2module (see
Chapter on changing measuring cells).
3. Switch on analyser and select SO2module in the “Display sequence”
menu.
Please note:
Prior to being first used install the SO2upgrade module (Item no.
0554.3923) to release the SO2measurement channel in the
analyser.

The measured values can be transmitted via infrared to the attachable
(testo 300 XL-I only) (Part no. 0554.0570), or the log printer (Part no.
0554.0545). Printing can be activated in the measurement menu by
pressing . Printing is only possible is the pump is off. Printing can
be stopped by pressing .
If a memory designator is active,
the printout includes the designator. If a memory designator is not active
or is a “noname”, the printout is
without “Designator”
Measurement example
Printing the measured results
20
If a memory designator is activated, several measurements can be saved
under one designator by pressing the memory button repeatedly.
These measurements are automatically numbered.
If a designator was not selected (See the memory menu in the reference
section) from the selection list, the measured values are saved under
“Noname”.
25.08.1996 10.28
Burner 1/15
No. 3
Fuel: light fuel oil
113.4 °C Flue gas temp.
6.5 % O2 level
19ppm CO level
69ppm NO level
25.08.1996 10.28
Fuel: light fuel oil
113.4 °C Flue gas temp.
6.5 % O2 level
19ppm CO level
69ppm NO level
Date/Time
“Designator”
No. of
measurement
Fuel
Measured
values
Saving the measured results
SSTTAARRTT
SSTTAARRTT
SSTTAARRTT
DDaattaaiissssaavveedd
SSTTAARRTT
*1
The printer
is printing
Measurement menu
Measurement menu
3 s
NONAME
AT!
MEMORY
EEXXAAMMPPLLEE
AT!
MEMORY
EEXXAAMMPPLLEE
AT!
MMEEMMOORRYY
AT!
EEXXAAMMPPLLEE
MMEEMMOORRYY
FFTT
FFTT
FFTT