Extech Instruments CO80 Manuel utilisateur
CO80
Combustion Gas Analyzer
CO80 V3.1 04/06
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Table of Contents
1. Introduction 4
2. Instrument Overview 5
2.1. Standard Items 5
2.2 Options 5
2.2.1. Leak Detection Capability 5
2.2.2. Air/Liquid/Surface Probe 5
2.3 Front View 6
2.4 Back View 7
2.5 Keypad 8
2.6 Display 9
2.7. Inlet Ports 10
2.8 Filter/Water Trap 11
2.9 Thermocouple Socket (Type-K) 12
2.10 Infrared Window 13
3. Setting Up 13
3.1 Power 13
3.2 Probe Selection 14
4. Taking Combustion Readings 15
4.1 Summary Procedure 15
4.2 Switching On 15
4.3. Scale Selection 15
4.3.1. Fuel Selection 16
4.3.2. Temperature Selection 16
4.3.3 Printer/PC Selection 17
4.3.4 Pressure Settings 17
4.5 Flue Readings 18
4.6. Reports 19
4.6.1 Saving a Report 19
4.6.2 Printing the Last Saved Report 20
4.6.3 Printing Any Saved Report 21
4.6.4. Deleting the Last Report 21
4.6.5. Deleting All Reports 21
4.6.6. Sending a Report 21
4.7. Switching Off 22
4.7.1 In Normal Mode 22
4.7.2 Power Off In High CO Levels 22
4.7.3 Power Off During CO Room Test 23
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5. Other Functions 24
5.1 Taking Pressure Readings 24
5.1.1. Standard Pressure Readings 25
5.1.2. Tightness Test 26
5.1.3. Pressure and Temperature Readings 29
5.2 Taking Efficiency Readings 30
5.3 Clock 31
5.4 Header Settings 31
5.4.1. Changing the Header Characters 31
5.4.2. Setting your Security Code 32
5.4.3. Changing a Security Coded Header 33
5.5 Taking Carbon Monoxide Readings 33
5.5.1 CO Spot Leak Detection 33
5.5.2 CO Room Test Mode 33
5.5.3 Printing the Last CO Report 35
5.5.4 Deleting the Last CO Report 35
5.5.5 To Print all CO reports 35
5.5.6. To Delete all CO Room Test Reports 36
5.6 Differential Temperature Measurement 36
5.6.1 Differential Thermometer Set up 36
5.7 Gas Leak Detection 38
6. Calibration and Service 39
7. Guarantee 39
Appendix A Specifications 40
1. Instrument 40
2. Probes 40
3. Options 40
5. Gases 41
6. Draught/Pressure Measurement 41
Appendix B Header Character Set 42
Appendix C Trouble Shooting Guide 43
Appendix D Communicating with a PC 45
Appendix E Setting Up the Printer 47
CO80 V3.1 04/06
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1. Introduction
Thank you for your purchase of the Extech CO80. This instrument has
been specifically developed to provide the many functions required by the
modern boiler service engineer and to assist with compliance to existing
and future legislation.
The CO80 now offers five tools in one instrument:
1. Flue Gas Combustion Analyser.
2. Differential Manometer.
3. Differential Thermometer.
4. Real time Carbon Monoxide Gas Leak Detector.
5. Gas Leak Detector.
In addition, there is a user selectable choice of fuels, temperature and
pressure measurements.
This manual will take you through the functions and operations of the
CO80 that will give you many years of reliable service.
Please also contact our technical support team at
WARNING
This instrument is not designed to be used in continuous operation, nor is it to be
used as a safety alarm.
It is designed to assist the heating engineer in diagnosing the correct installation or
maintenance of heating appliances.
Full visual inspections of those appliances will be necessary, and other procedures
should be adopted as appropriate.
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2. Instrument Overview
2.1. Standard Items
Your CO80 kit comes supplied with the following items as standard:
a) CO80 flue gas analyser
b) Sample/thermocouple probe, with 2.5 meters of tubing and cable
c) Filter/water trap
d) Battery charger
e) 2 off silicon tubing for pressure reading
f) Soft carrying case
2.2 Options
2.2.1. Leak Detection Capability
This sensor option is fitted inside the instrument, enabling the CO80 to
detect flammable gas leaks.
Once the gas leak screen has been cleared in order to view other screens
and measurements, the thirty second purge period will be to be
reactivated in order to perform other gas leak checks.
2.2.2. Air/Liquid/Surface Probe
See Appendix A for specification details, Display 4 in Section 2.6 to see
readings, and Sections 2.9 and 3.2 for connection.
Additional options include a protective rubber boot, an infra red printer, a
hard carry case and an IrDA converter.
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2.3 Front View
Charger Socket
Exhaust Cover
Infrared Window
Gas & Pressure
Inlet Ports Thermocouple
Sockets
Keypad
LCD Display
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2.4 Back View
Exhaust
Cover
Infrared
Window
Gas & Pressure
Inlet Ports
Thermocouple
Sockets
Barcode
Label
Calibration
Label
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2.5 Keypad
Turns the instrument ON or OFF. Note that
the instrument will automatically switch off if
not used for a period of 15 minutes (see 4.2
for additional information
)
The straightforward
membrane keypad
comprises 6 keys,
where a single touch
will have the following
functions:
Used to reset the pressure to ambient levels.
Activates the Tightness Test
Turns the back light on/off and records the
pressure for the soundness test and the
temperature in the pressure test
Scrolls through up to 8 displays, depending
on options taken (see 2.6).
Logs and prints sets of readings, or logs and
downloads up to 50 sets of combustion analysis and
25 CO room test readings to a PC (see 4.6).
Displays the clock and is used to scroll through
saved reports– keeping this held down for 2
seconds activates the soundness test.
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2.6 Display
There are eight standard displays on the CO80, although several of the
displays have multiple functions and options. These depend upon the
probes connected and menu selected.
Display 1
CO in ppm, carbon dioxide in
%, and ratio of the 2 gases –
use this screen to provide an
instant “health check” of the
boiler.
Display 4
Displays the positive and negative
pressure (selected by connecting to
the appropriate inlet).
Display 4 options also include a
tightness test count-up timer and
logging of the temperature during
pressure test, dependent on mode
and connections (see Section 5).
Display 2
Oxygen, excess air and
combustion efficiency all
in % - use this screen to
display how efficiently the
boiler is working.
Display 3
Displays oxygen in %, and
carbon monoxide in ppm – use
this screen to identify any CO
gas leaks and concentration
levels.
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2.6 Display (continued)
Display 6
Time (24 hours), day, month
and year.
Display 8
Provides temperature
information. The outlet (flue)
temperature is displayed on the
top of the screen and the inlet at
the bottom, with the difference
between the two displayed in
the middle.
Display 7
Provides information on the CO
levels for the room test.
Pressing & holding the “Log”
starts the test and the display
alternates between the elapsed
time period in minutes and the
maximum CO in ppm for that
minute.
Display 5
This is displayed only when
the leak sensor option has
been specified. It indicates
approximate concentrations
of flammable gas (See
2.2.1).
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