Extech Instruments CO80 Manuale utente

CO80

Combustion Gas Analyzer

CO80 V3.1 04/06

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

CO80 V3.1 04/06

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

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

(781) 890-7440 x 200 or [email protected] for additional information.

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.

CO80 V3.1 04/06

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.

CO80 V3.1 04/06

2.3 Front View

Charger Socket

Exhaust Cover

Infrared Window

Gas & Pressure

Inlet Ports Thermocouple

Sockets

Keypad

LCD Display

CO80 V3.1 04/06

2.4 Back View

Exhaust

Cover

Infrared

Window

Gas & Pressure

Inlet Ports

Thermocouple

Sockets

Barcode

Label

Calibration

Label

CO80 V3.1 04/06

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.

CO80 V3.1 04/06

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.

CO80 V3.1 04/06

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).

Indice

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