Honeywell Sieger Apex Operating Manual

Technical Handbook

Sieger Apex

MAN0604 Issue 04 Feb 04 Apex 2110M8030

SAFETY

Ensure that you read and understand this handbook BEFORE installing/operating the equipment. Pay particular attention to the Safety Warnings.

WARNINGS

1. This gas detection equipment is certified for and intended for use in potentially hazardous areas. Install and use the equipment in accordance with current local and national regulations.

2. Refer to the control drawings included in this document when installing the certified components.

3. Operators should be fully aware of the action to be taken if the gas concentration exceeds alarm level.

4. Do not modify or alter the construction of any of the units as essential safety and certification requirements may be invalidated.

5. The equipment is not suitable for use in oxygen enriched atmospheres (>21%V/V). Oxygen deficient atmospheres (<10% V/V) may suppress some sensor outputs.

6. The equipment is intended for use at atmospheric pressure only and should not be used in pressures exceeding 1.1 bar.

Transmitter Unit only

1. INPUT VOLTAGE MUST NOT EXCEED THE STATED MAXIMUM (32V DC) AS ESSENTIAL SAFETY REQUIREMENTS MAY BE INVALIDATED AND THE UNIT MAY BE PERMANENTLY DAMAGED.

2. Alarms should not be reset until it is confirmed that gas is not present.

3. Hazardous voltages may exist at alarm contacts. Ensure power is disconnected at source prior to servicing contacts.

4. Gas events occurring while accessing the Transmitter Unit menus will not be reported locally.

5. Overrange flammable gas readings may indicate an explosive concentration of gas.

Certified Sensor only

1. When installed to measure flammable gas it is essential that either the Transmitter unit or control network is configured to latch the overrange condition. If the Transmitter unit local relays are used this should be achieved by enabling the overrange latching function of the Transmitter unit. Depletion of oxygen as a consequence of displacement by flammable gas can result in the gas reading returning to zero.

2. Change gas cartridges using the procedure described in this handbook. Failure to correctly follow the procedure could result in the wrong cartridge being installed, and possibly non-detection of events. Alternatively, extraneous alarms could be triggered by chemicals detected but not of concern at a particular location.

3. Sensor cartridges may contain corrosive solutions. Dispose of in accordance with local and national regulations.

4. During usage, as some gases may be hazardous, outlets from accessories, etc., e.g. Flow Housing, should exhaust to a safe area.

MAN0604 Issue 04 Feb 04 Apex 2110M8030

SAFETY

CAUTIONS

1. Only the combustible gas detection portion of this instrument has been assessed for performance by CSA.

2. Refer to local or national regulations relative to installation and use at the site.

3. Installation should consider not only optimum siting for gas detection related to potential leak points, gas characteristics and ventilation but also placement where the potential for mechanical damage is minimised or avoided.

4. Observe precautions for handling electrostatic discharge sensitive devices when accessing the interior of the Transmitter Unit.

5. Calibration procedures should only be performed by qualified personnel.

6. Ensure that when forcing signals on the Transmitter Unit’s output that the effects on the network and controller are understood.

7. Ensure that the Apex Transmitter Unit or Junction Box flamepath is not damaged during dismantling procedures. The flamepath is formed by the mating surfaces of the unit’s top and base.

8. During installation/maintenance only use the supplied parts. Replacement with alternatives will invalidate certification.

9. Exposure to fluorinated hydrocarbons or silicones will poison the sensor beads on catalytic sensor cartridges. If a sensor is known to have been poisoned then it must be re-calibrated. If not sure then flow gas over the sensor and if the reading is incorrect re-calibrate within the cartridge’s tolerance value.

10. Only cartridges with the following part numbers can be fitted to the Certified Sensor:

2110B30x0, 31x0, 32x0, 33x0, 34x0 series 2110B3700 - 2110B3999 range

Note: Certified to CSA C22.2 No. 152 only when fitted with specific cartridges.

See specifications for details.

Performance assessed to EN50054/57 when fitted with cartridges Part No: 2110B3701& 2110B3704. See specifications for detail.

11. When compliance with the ATEX EN50054 performance standard is required the warning and inhibit current shall not be configured to a value between than 3.1mA and 4.9mA

12. Do not use the unit where the temperature is lower than -40

+65

C (149oF).

C (-40oF) or higher than

13. Exposures to gas above the recommended range may result in ambiguous readings and may require subsequent re-calibration of the sensor.

14. Review cartridge data sheets for operating temperatures and humidities, which are determined on a cartridge by cartridge basis.

15. Dispose of in accordance with local disposal regulations. Materials used:

Transmitter Unit

Main Body: Stainless Steel User Interface: Zinc Alloy.

Certified Sensor

Main Body: Stainless Steel

Certified Junction Box

Main body: Stainless steel.

MAN0604 Issue 04 Feb 04 Apex 2110M8030

HELP US TO HELP YOU

Every effort has been made to ensure the accuracy in the contents of our documents, however, Zellweger Analytics Limited can assume no responsibility for any errors or omissions in our documents or their consequences. Zellweger Analytics Limited would greatly appreciate being informed of any errors or omissions that may be found in our documents. To this end we include the following form for you to photocopy, complete and return to us so that we may take the appropriate action.

To: Marketing Communications

Zellweger Analytics Limited Hatch Pond House 4 Stinsford Road Nuffield Estate POOLE. Dorset BH17 0RZ United Kingdom

Tel.: +44 (0) 1202 676161 Fax.: +44 (0) 1202 678011 E-mail : sales@zelana.co.uk

I suggest the following corrections/changes be made to: ..................

From:

Address:

Tel.: Fax.: E-mail:

Marked up copies attached (as appropriate): Yes / No

Please inform me of the outcome of this change: Yes / No

For Marketing Communications, Zellweger Analytics Limited: Actioned By:

Date: Response:

Date:

MAN0604 Issue 04 Feb 04 Apex 2110M8030

CONTENTS

SAFETY 2

HELP US TO HELP YOU 4

1. INTRODUCTION 8

2. OVERVIEW 10

2.1 Transmitter Unit 10

2.2 Certified Sensor 12

2.3 Accessories 14

2.3.1 Certified Junction Box 14

2.3.2 Collecting Cone 16

2.3.3 Flow Housing 17

2.3.4 Weather Housing 18

2.3.5 Sunshade 18

2.3.6 Oxygen Transducer Adaptor 19

2.3.7 Filters 19

3. INSTALLATION 20

General Installation Guidelines 21

3.1 Transmitter Unit and Certified Sensor 22

3.1.1 Installing the Transmitter Unit 22

3.1.2 Fitting the Certified Sensor 25

3.1.3 Installing the Gas Sensing Cartridge 27

3.1.4 Transmitter Unit Configuration 29

3.2 Certified Junction Box and Certified Sensor 31

3.2.1 Installing the Certified Junction Box 32

3.2.2 Fitting the Certified Sensor 34

3.2.3 Installing the Gas Sensing Cartridge 36

3.2.4 Certified Junction Box Configuration 37

3.3 LonWorks Communications Board 38

3.3.1 Removing the Transmitter Unit top 39

3.3.2 Removing the Main PCB assembly from the top 40

3.3.3 Fitting the LonWorks Communication Board to the Main PCB 40

3.3.4 Refitting the Main PCB Assembly into the Top 41

3.3.5 Connecting the LonWorks Network Wiring 42

3.3.6 Refitting the Transmitter Unit Top 43

3.4 Accessories 46

3.4.1 Flow Housing, Weather Protection, Collecting Cone 46

3.4.2 Sunshade 47

MAN0604 Issue 04 Feb 04 Apex 2110M8030

CONTENTS

4. OPERATION 49

4.1 Display and Control Buttons 49

4.1.1 LCD screen 50

4.1.2 Control buttons 50

4.2 Start-up 51

4.3 Passwords 52

4.3.1 Setting/changing passwords 53

4.3.2 Password reset 55

4.4 Menus 56

4.4.1 Calibration Menu 57

4.4.2 Configuration Menu 63

4.4.3 Display Menu 71

4.4.4 History Log Menu 74

4.4.5 Change Passwords Menu 75

4.4.6 Reset Passwords 76

4.5 User Tasks 77

4.6 Fault Diagnosis 78

4.6.1 Displayed Error Messages 78

4.6.2 General Faults 79

4.6.3 4-20mA output signal ranges and fault conditions 80

4.6.4 Clearing latched alarms 81

4.7 System Calibration 82

4.8 Binding Communication Boards to Networks 87

5. MAINTENANCE 89

5.1 Routine maintenance schedule 89

5.2 Maintenance Procedures /Parts Replacement 90

5.2.1 Changing the Certified Sensor Filter 90

5.2.2 Changing the Certified Sensor Cartridge 91

5.2.3 Changing the Certified Sensor 95

5.2.4 Changing the Transmitter Unit Front Panel Assembly 98

APPENDIX A - SPECIFICATIONS 100

A.1 Transmitter Unit and Sensor 100

A.1.1 Gases and Ranges 100 A.1.2 Input/Output 100 A.1.3 Monitoring functions 102 A.1.4 Performance 102

MAN0604 Issue 04 Feb 04 Apex 2110M8030

CONTENTS

A.1.5 Environmental 102 A.1.6 Storage (excluding cartridge) 102 A.1.7 EMC 103 A.1.8 Enclosure 103 A.1.9 Configuration 103 A.1.10 Certification and Approvals 103 A.1.11 Calibration intervals 105

A.2 Cartridges 105

A.2.1 Cartridge tables 105

A.3 Accessories 111

A.3.1 Certified Junction Box 111 A.3.2 Sunshade 112 A.3.3 Flow Housing 113 A.3.4 Weather Protection 113 A.3.5 Collecting Cone 113 A.3.6 Oxygen Transducer Adaptor 113

A.4 LonWorks Communications Board 113

A.4.1 LonWorks Network Variables 114 A.4.2 Node Object 114 A.4.3 Sensor Object 116 A.4.4 Virtual Function Block 117 A.4.5 Implementation of nviRequest 118 A.4.6 Interpretation of nvoStatus 119

APPENDIX B - CERTIFICATION 120

B.1 Transmitter Unit 120 B.2 Certified Sensor 121 B.3 Certified Junction Box 123 B.4 Accessories 124 B.5 Control Drawings 125

APPENDIX C - ACCESSORIES & SPARE PARTS 127

C.1 Accessories 127 C.2 Digital Communications Board 127 C.3 Spares 127

APPENDIX D - GLOSSARY 128

MAN0604 Issue 04 Feb 04 Apex 2110M8030

1. INTRODUCTION

Apex is a gas detection system that consists of a Transmitter Unit, a certified gas sensor and a set of accessories. The Transmitter Unit, Certified Sensor and Certified Junction Box accessory are all certified for use in potentially hazardous areas and are protected against water and dust ingress to IP67.

Typical working environments are oil and gas distribution, petroleum extraction and chemical manufacture.

System installation is straightforward. Components should be installed in accordance with the procedures described in this handbook and to local or national installation codes of practice.

The Transmitter Unit acts as the local system controller and features a large LCD screen and four control buttons that are used for operator interaction. Control of the system is implemented via a system of softwaredriven hierarchical menus that include such operations as cartridge change, system configuration, etc. Remote control of the system can be made via an optional digital interface.

The Transmitter Unit can have the Certified Sensor fitted to it locally or mounted remotely using a Certified Junction Box and additional cabling up to 100 metres long.

The Transmitter Unit provides a 4-20mA output, as well as an optional digital output. Relays for operating locally-wired devices, such as lights, horns, etc. are included. The range of accessories enhances operation of the system and includes a collecting cone, weather protection, etc.

The Certified Sensor is compatible with a range of more than 40 sensor cartridges that use catalytic bead, thick film and electrochemical cells.

The interchangeable sensor cartridge determines which gas is monitored. All gas cartridges are fully calibrated when supplied.

The Certified Sensor uses intrinsically safe circuits to drive the cartridges. Cartridges may therefore be exchanged without powering down even in the presence of an explosive gas atmosphere.

Field calibration of the sensor, if required, is also possible. The cartridges available are listed in Appendix A.

The output from the sensor provides a gas concentration reading that is displayed on the LCD screen on the front of the Transmitter Unit and is also transmitted on the 4-20mA output and the optional digital interface.

MAN0604 Issue 04 Feb 04 Apex 2110M8030

1. INTRODUCTION

This handbook consists of the following parts:

• Chapter 1 Introduction

• Chapter 2 Overview

• Chapter 3 Installation

• Chapter 4 Operation

• Chapter 5 Maintenance

• Appendix A Specifications

• Appendix B Certification

• Appendix C Accessories & Spare Parts

• Appendix D Glossary

Information notices

The types of information notices used throughout this handbook are as follows:

WARNING

Caution: Indicates hazardous or unsafe practice which could result in

Note: Provides useful/helpful/additional information.

Trademarks

The following trademarks are used in this handbook:

Teflon® and Freon® are registered trademarks of E.I. DuPont de Nemours and Co.

LonWorks®, Echelon®, Neuron®, and LonTalk® are registered trademarks of Echelon Corporation.

If more information outside the scope of this technical handbook is required please contact Zellweger Analytics.

Indicates hazardous or unsafe practice which could result

in severe injury or death to .personnel

minor injury to personnel, or product or property damage.

MAN0604 Issue 04 Feb 04 Apex 2110M8030

2. OVERVIEW

This chapter provides an overview of the following system components, and provides their dimensions:

• Transmitter Unit

• Certified Sensor

• Accessories

For installation information see Chapter 3.

Also see drawing 2110C8049 Outline Dimensions of Certified Transmitter, Sensor & Accessories (available on request from Zellweger Analytics).

2.1 TRANSMITTER UNIT

The Transmitter Unit provides a mounting point for a Certified Sensor and contains all the electronics associated with the gas detection system.

It features an LCD display screen that displays the controlling software menu system, and also a set of buttons that let an operator/user interact with the system by accessing the menus and responding to displayed messages.

The Transmitter Unit is shown with a Certified Sensor fitted.

Certification label

LCD screen

LCD screen assembly

securing screw

(2 off)

Buttons

Top retaining

cable

Ribbon cable

Unit top

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2. OVERVIEW

Interconnect PCB

Locating pins

Captive bolt

External

earth

Sensor mounting

Unit base

Cable/conduit

entry (2 off)

(3 off)

Certified

Cable/conduit entry sealing plug (1 off)

MAN0604 Issue 04 Feb 04 Apex 2110M8030

2. OVERVIEW

2.2 CERTIFIED SENSOR

The Certified Sensor consists of the sensor body and one of four types of replaceable gas cartridge and the electronics to output gas sensing data to the Apex Transmitter Unit. The Certified Sensor can be fitted with any one of a number of accessories, the majority of which fit in place of the sensor cap (see 2.3).

The four types of cartridge are:

• electrochemical cell

• catalytic (SG16 type)

• oxygen

• thick film

Caution: Only cartridges with the following part numbers can be

fitted to the Certified Sensor:

2110B30x0, 31x0, 32x0, 33x0, 34x0 series

2110B3700 - 2110B3999 range

Certified Sensor approved to CSA C22.2 No. 152 only when fitted with specific cartridges installed. See specifications for details.

The sensor should be mounted in the vertical orientation with the cartridge facing downwards.

MAN0604 Issue 04 Feb 04 Apex 2110M8030

2. OVERVIEW

Cap or accessory

Seal or

filteroptional

Sensor body

Certification label

Cartridge

Sensor cable

All the gas cartridges are the same size except for the Oxygen cartridge, which is larger than the rest. To allow for its extra length an Oxygen Transducer Adaptor, supplied with the cartridge, mounts on the sensor bayonet fixing. The Oxygen cartridge is then inserted and the cap or accessory fitted.

165mm

(177mm with

Oxygen

transducer)

Oxygen transducer

adaptor

53mm

MAN0604 Issue 04 Feb 04 Apex 2110M8030

2. OVERVIEW

2.3 ACCESSORIES

The Apex accessories provide optional equipment that can, for example, protect the Certified Sensor in harsh external environments and assist gas monitoring. All of the sensor accessories are easily fitted.

The following accessories are available:

• Certified Junction Box (Part Numbers: ATEX EEXd 2110B2100, UL/CSA [Explosion proof] 2110B2103) - two

types for remote mounting a Certified Sensor.

• Collecting Cone (Part No: 2110B2151) - for use when monitoring lighter-than-air gases.

• Flow Housing (Part No: 21110B2140) - to aid sensor calibration and gas sample monitoring.

• Weather Housing (Part No: 2110B2150) - to protect the sensor from harsh weather.

• Sunshade (Part No: 2110B2152) - to protect the sensor from direct sunlight.

• Filters - three different filters to provide protection for the gas sensing cartridge.

• O2 Transducer Adaptor - supplied with Oxygen cartridges to allow for their longer length over standard cartridges.

2.3.1 Certified Junction Box

Part Numbers: ATEX EEXd 2110B2100 UL/CSA (Explosion proof) 2110B2103

The Certified Junction Box accessory is used to mount a Certified Sensor remotely from the Transmitter Unit, and provides a connection point for the sensor and field wiring.

MAN0604 Issue 04 Feb 04 Apex 2110M8030

2. OVERVIEW

Lid retaining

cable

Flamepath

Terminal block

(3 off)

External

earth

Cable / conduit

entry (2 off)

Cable entry

sealing

plug (1 off)

Certification label

Certified Junction

Box Top

Interconnect PCB

Flamepath

Captive bolt

(3 off)

Sensor

mounting point

95mm

152mm

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2. OVERVIEW

2.3.2 Collecting Cone

Caution: This accessory should not be used for calibration

purposes.

Part Number: 2110B2151

127mm

160mm

The Collecting Cone is only for use when monitoring lighter-than-air gases.

Its shape is designed to:

• increase the collection area for lighter than air gases

• allow the gases to escape so that the time to clear an alarm is

not excessively prolonged.

• fit against a wall or other flat surface

Conforms to CSA C22.2 No. 152 when fitted to the Certified Sensor specific cartridges installed. See specifications for details.

The performance of this accessory has not been evaluated to EN50054/57

The Collecting Cone is attached to the sensor by means of a bayonet fitting.

Inside the cone is a 1/4in. O/D nozzle that can accept a tube and which provides a means to directly inject gas to the front of the sensor for gas response checking. The recommended flow rate for response checks is 1 litre per minute.

with

Accuracy of reading is not guaranteed.

Note: Do not carry out response checks at wind speeds greater than

10m/s (22mph).

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2. OVERVIEW

2.3.3 Flow Housing

Part Number: 2110B2140

43mm

53mm

The Flow Housing accessory provides a means of applying gas to the sensor for calibration and test (for details see section 4.7). It can also be used in sampling systems where a sample of gas is drawn through a tube to the sensor. Conforms to CSA C22.2 No. 152 when fitted to the Certified Sensor with specific cartridges installed. See specifications for details.

It provides:

• Two ports 8mm I/D to take 6mm tubing.

• A seal to stop gas dilution.

The housing works irrespective of which pipe the gas is applied to and flows gas across the face of the sensor rather than onto its face.

The difference in reading between a calibration made with the Flow Housing accessory and one made under diffusion conditions (in a tank of still gas) is less than 30%. The Flow Housing is suitable for flow rates in the range of 0.7 - 1 litre per minute flow across the cell.

A hydrophobic filter is supplied with the housing which must be used when calibrating sensors fitted with flammable gas cartridges.

When calibrating sensors fitted with other types of cartridge then the filter mounted in the sensor cap for normal gas sensing operation (if fitted) must be removed and used in the Flow Housing.

The Flow Housing accessory is attached to the sensor by means of a

MAN0604 Issue 04 Feb 04 Apex 2110M8030

2. OVERVIEW

bayonet fitting.

2.3.4 Weather Housing

Caution: This accessory should not be used for calibration

purposes.

This accessory is not recommended for use in still air

conditions.

Part Number: 2110B2150

75mm

53mm

The Weather Housing accessory protects the sensor from hosing down/ cleaning operations and from extreme weather conditions, (e.g. torrential rain, storms, gales etc.). Conforms to CSA C22.2 No. 152 when fitted to the Certified Sensor with specific cartridges installed. See specifications for details.

The weather housing should not be fitted if the operating environment of the sensor does not require the additional protection afforded. In still air conditions the gas is transported to the face of the sinter is by diffusion only. Under such conditions the weather protection will slow the rate at which gas can reach the sensing element and consequently the speed of response of the sensor to gas will be reduced.

As well as providing weather protection the housing also provides a means to directly inject gas to the front of the sensor via a 1/4in. O/D nozzle for gas response checking. The recommended flow rate for response checks is 1 litre per minute. Accuracy of reading is not guaranteed. Do not carry out response checks at wind speeds greater than 10m/s (22mph).

The accessory is attached to the sensor by means of a bayonet fitting.

Note: The sensor will exhibit an increased reading(or indication) to gas with higher wind speeds. Fitting the weather housing with the supplied hydrophobic filter will eliminate this effect but increase the response time.

MAN0604 Issue 04 Feb 04 Apex

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2110M8030

2. OVERVIEW

2.3.5 Sunshade

Part Number: 2110B2152

145mm

115mm

The Sunshade prevents excessive heating of the sensor by direct sunlight. Conforms to CSA C22.2 No. 152 when fitted to the Certified Sensor with specific cartridges installed. See specifications for details.

The performance of this accessory has not been evaluated to EN50054/57. The sunshade is fitted to the sensor body by means of a clamp.

2.3.6 Oxygen Transducer Adaptor

18mm

53mm

The Oxygen Transducer Adaptor is supplied with the Oxygen cartridge and is necessary because the depth of the Oxygen cartridge is more than that of the other gas cartridges.

The adaptor is attached to the Certified Sensor by means of a bayonet fitting. The Oxygen cartridge is fitted first and the sensor cap or accessory is then fitted to the adaptor by means of a bayonet fitting.

2.3.7 Filters

One of three different types of filter accessory can be fitted to the Certified Sensor in place of the rubber seal inside the sensor cap or accessory.

The three different types of filter available are:

Mesh filter - Part Number: 2110B2170 - for use in harsh environments. The filter prevents dirt from blocking the cartridge sinter.

Hydrophobic filter - Part Number: 2110B2171 - for use in environments where the cartridge front is likely to become wet. The hydrophobic material allows gas to pass through but not water. A hydrophobic filter is supplied with the Flow Housing and must be used when calibrating sensors fitted with flammable gas cartridges.

Caution: The sensitivity of some cartridges may be degraded by

the hydrophobic filter.

Carbon filter - Part Number: 2110B2172 - for use in environments where significant volatile compounds are present. The filter prevents the cartridge from being critically affected.

The performance of this accessory has not been evaluated to EN500054/57

MAN0604 Issue 04 Feb 04 Apex 2110M8030

3. INSTALLATION

The Apex system components can be used together in a variety of ways for different installation requirements in a hazardous environment. For installations of certified components also refer to the Control Drawings in Appendix B.

The following types of system installation are typical examples of those that can be made:

• Apex Transmitter unit with a Certified Sensor locally mounted at the Transmitter Unit and field wiring from the Transmitter Unit to the system controller.

• Transmitter unit with a Certified Sensor mounted remotely in a Certified Junction Box, with field wiring between the two components, and from the Transmitter Unit to the system controller.

This chapter describes how to:

• carry out the installation of a Transmitter Unit and Certified Sensor

• install an Certified Junction Box accessory with Certified Sensor, suitable for remote operation

• install a LonWorks Communications Board in a Transmitter Unit

This is to enable the unit to be controlled and communicate over a digital network, e.g. LonWorks.

Caution: Do not install a communications board into a UL or CSA certified

Transmitter Unit as approval for fitment is pending.

• install the system accessories

When fitting the system components consideration should be made regarding potential gas leak sources, density of the gas to be detected, probability of mechanical impacts and interference from other equipment and apparatus.

For optimum performance the Transmitter Unit and Certified Sensor should be installed in a location free from dust and direct sunlight. Sunshade and weather protection accessories for the sensor are available when operating in harsh external environments (see 3.4).

Refer to the relevant control system manual for external network connection information (e.g. field wiring, etc.).

MAN0604 Issue 04 Feb 04 Apex 2110M8030

3. INSTALLATION

Also see drawing 2110C8049 Outline Dimensions of Certified Transmitter, Sensor & Accessories (available on request from Zellweger Analytics).

General Installation Guidelines

The following general points should be noted before any installation is carried out.

• Read all the instructions before starting any of the installation procedures.

• Identify a suitable location with a flat surface where the Apex Transmitter Unit/Certified Junction Box can be mounted.

• Identify external cable requirements and the necessary cable/conduit entry ports to be used on the Apex Transmitter Unit/Certified Junction Box.

• The Certified Sensor must always point downwards to avoid collection of fluids and other materials on the face.

• When fitting components that are certified also refer to the Control Drawings (see Appendix B).

The system components comply with the EMC requirements of EN50270. In order to maintain compliance with this standard it is essential that the components are installed correctly as detailed below. It is the responsibility of the installation design authority to ensure that the electrical installation meets appropriate standards.

1. The unit should not be electrically connected to electrically noisy (dirty) metalwork or conductors. The case should be connected to a low noise (clean) earth line via the screen on the field cabling.

2. The entire length of the field cabling connected to each unit should be fully screened with the screen connected to a low noise earth.

3. The low noise earth line should only be connected to safety earth at a single point. Star earthing arrangements minimise earth current crosstalk. Field cabling shields should not be connected such that earth loops are produced.

4. The earth bonding arrangement must ensure that the maximum peak voltage between the unit case earth and any field cable conductor is less than 350V. Voltages in excess of this can cause permanent damage to the unit's RFI protection filters.

5. The use of a single, screening cable for each gas detector ensures maximum screening and minimum crosstalk. Cabling arrangements which use a single cable for connecting field devices compromise screening, increase the

MAN0604 Issue 04 Feb 04 Apex

Apex Transmitter Unit

with Certified Sensor

(European

-style

installation)

2110M8030

3. INSTALLATION

potential for crosstalk and prevent implementation of true star earthing.

6. Any electrical interference induced onto the 4-20mA loop conductors by the installation must be kept below the levels necessary to comply with the general requirements of EN50270. In practice, this means that peak noise currents induced on the current loop should be no greater than ±

0.25mA.

7. The 0V rail of the control card/system is often directly connected to one side of the 4-20mA current sensing resistor. Electrical noise on such a rail is therefore directly connected to the 4-20mA input. In order to avoid additional noise being induced on the 0V rail, it should not be common with the safety earth/ground which frequently carries a high level of electrical noise.

8. The 24V supply should be free from large transients and fluctuations.

The type of cable used for field wiring between the Apex transmitter and control equipment, and between the Apex transmitter and Apex sensor if mounted remotely, should be selected to meet the environmental and hazardous area requirements. The cable internal construction should be a of the screened, multicore, multi-stranded type. The terminals within the product will accept a maximum conductor size of 2.5mm2 (14AWG). The recommended minimum conductor size is 0.75mm2 (20AWG). The conductors should be sized to give a total power supply loop resistance of less than 30 Ohms (ECC cartridge) or 16 0hms (Catalytic cartridge). If remote mounting the sensor from the transmitter a 4-core, screened cable with a minimum conductor size of 0.75mm2 (20AWG) is required.

3.1 TRANSMITTER UNIT AND CERTIFIED SENSOR

This installation consists of a Transmitter Unit with Certified Sensor locally mounted at the Transmitter Unit together with field wiring.

Apex Transmitter Unit

with Certified Sensor

North America-style

(

installation)

The system components can be installed by a single technician.

This procedure describes how to:

• install a Transmitter Unit

• fit a Certified Sensor to the local Transmitter Unit

• connect up the Certified Sensor and field wiring

• configure the Transmitter Unit relay and alarm settings

• install a gas sensing cartridge into the Certified Sensor

MAN0604 Issue 04 Feb 04 Apex 2110M8030

3. INSTALLATION

Refer to the General Installation Guidelines at the beginning of this chapter.

3.1.1 Installing the Transmitter Unit

Cautions:

1. Observe precautions for handling electrostatic discharge sensitive devices.

2. Ensure that the Apex Transmitter Unit flamepath is not

damaged during this procedure. The flamepath is formed by the mating surfaces of the Apex Transmitter Unit top and base (see diagram).

(1) Isolate all associated power supplies and ensure that they remain OFF

during the installation procedure. Ensure a gas free atmosphere.

(2) Attach the Apex Transmitter Unit to the supporting structure.

Drill two mounting holes (68mm apart) and use the unit’s mounting slots in the base with either two M10 bolts or a single 10mm U-bolt.

Unit top

Top retaining

cable

Flamepath

Locating

pins

Cable securing

screw

External

earth

Unit base

Cable / conduit

entry (2 off)

Cable/conduit entry sealing plug

(3) Detach the top of the Transmitter Unit.

Unscrew the three captive M8 bolts in the base. Support the top and let the metal retaining cable, attaching the top to the base, hold the top. Take care not to damage or strain the ribbon cable between the top and the base.

(4) Fit and connect the field wiring.

ZIF

Ribbon cable

Interconnect

PCB

Flamepath

Captive bolt

(3 off)

Certified

Sensor mounting

point

See the subsequent wiring table and diagram. Use either:

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3. INSTALLATION

Conduit - using one or both of the 3/4 NPT conduit entries. Ensure that a

conduit sealing fitting is installed within 460mm of the enclosure on all conduit runs.

Cable - using any suitable flameproof cable entry device certified as Equipment to Directive 94/9/EC (ATEX).

Note: All unused cable/conduit entries must be sealed with a suitable certified

sealing plug (one plug is supplied).

Typical wiring arrangements to the Transmitter Unit are (with all cables screened):

Single cable/conduit entry

Power 4-20mA Digital Comms Relays Cores used

21--3

22--4

22-610

222-6

2-2-4

Twin cable/conduit entries

Power 4-20mA Digital Comms Relays

2 2 (4 cores) - 6 (6 cores)

2 2 2 (6 cores) 6 (6 cores)

2 x power in - 2 x comms in (4 cores) 2 x power out - 2 x comms out (4 cores) -

More complex wiring schemes may need to use external Certified Junction Boxes either because of cable/conduit entry capacity or because there are more than two cable/conduit destinations.

3.1.2 Fitting the Certified Sensor

(1) Fit the Certified Sensor to the Transmitter Unit.

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3. INSTALLATION

Transmitter Unit

base

Certified Sensor

mounting point

Certified Sensor

Feed the sensor cable through the Certified Sensor mounting point at the front of the Transmitter Unit base. Screw the sensor firmly into the mounting point until it is fully home.

(2) Connect the sensor wiring.

See the following wiring table and diagram.

Terminal Function Colour Recommended Number Wire Length

SK3

(Sensor)

SK4

(Comms and Power)

SK6

(Relays)

1 CAN_L White 40mm 2 CAN_H Green 40mm 3 +V Red 40mm 4 0V Black 40mm 5 Screen 40mm 1 NET1 60mm 2 NET2 60mm 3 Ground 50mm 4 4 - 20mA - 50mm 5 4 - 20mA + 50mm 6 0V 50mm 7 +24Vdc (18-32Vdc) 50mm 1 Fault 50mm 2 Fault common 50mm 3 Alarm 1 50mm 4 Alarm 1 common 50mm 5 Alarm 2 50mm 6 Alarm 2 common 50mm

G - Earth Green/Yellow

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Ground

SK4

Ground

SK3

(3) Configure the Transmitter Unit if required.

SK6

Set the links on the Interconnect PCB for the required relay contact settings and for the 4-20mA topology. See 3.1.4.

(4) Refit the top to the base.

Cautions:

1. Ensure that there is no moisture inside the unit before fitting the top.

2. Use only the captive bolts supplied, replacement with alternative bolts will invalidate certification.

Follow the reverse of the removal procedure supporting the top. The top should be positioned using the locating pins on the Apex Transmitter Unit base and then lowered onto the base.

Ensure that the lid retaining cable and wiring is not trapped and the O-ring in the top is correctly located.

Ensure that the ribbon cable is not twisted and is correctly positioned. Check that there is no discernible gap between the top and the base. Tighten the three captive M8 bolts to 5Nm (3.68 foot-pounds).

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3.1.3 Installing the Gas Sensing Cartridge

(1) Remove the cap from the Certified Sensor body.

Sensor body

Sensor cap

Rotate the cap or accessory 1/4 turn in an anticlockwise direction to release the bayonet fitting.

(2) Fit the gas sensing cartridge into the sensor body.

WARNING

Each cartridge is provided with a certificate of calibration (printed on the reverse of the instruction sheet, Part No: 2110M8015, supplied with the cartridge) that guarantees that the cartridge is calibrated and ready for use. Before installing a cartridge check that the number on the cartridge label matches the gas type and range for the function required.

Caution: Only cartridges with the following part numbers can be fitted

Note: Conforms to CSA C22.2 No. 152 only when fitted with specific cartridges.

See specifications for details.

Sensor Cartridges may contain corrosive solutions.

Dispose of according to local and national regulations.

to the Certified Sensor:

2110B30x0, 31x0, 32x0, 33x0, 34x0 series 2110B3700 - 2110B3999 range

Carefully plug the cartridge into the Certified Sensor body ensuring that the cartridge tab lines up with the recess in the sensor body and push the cartridge, without twisting, until it is fully home.

If the cartridge will not push fully home, re-check that the locating tab is correctly aligned with the recess in the sensor body. Position the tab so it is resting on the tab recess wall to the right or left of the tab recess and then turn the cartridge until the tab drops into the recess.

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Caution: Do not force the cartridge as this may cause damage to the pins

of the connecting plugs. Twisting and pushing can bend the pins and make the cartridge inoperative.

Socket (2 off)

Plug

(2 off)

Locating

tab

recess

Sensor body

Note: If fitting an Oxygen cartridge ensure that the Oxygen Transducer Adaptor

supplied with the Oxygen cartridge is fitted to the Certified Sensor body. The adaptor is fitted to the sensor body via a bayonet fitting.

(3) Refit the cap to the Certified Sensor.

Reverse the removal procedure.

Sensor body

Locating

tab

Cartridge

Cartridge fitted to sensor

body

Sensor cap

(4) Check for correct operation of the system by carrying out the procedures

described in Chapter 4.

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3. INSTALLATION

3.1.4 Transmitter Unit Configuration

Caution: Do not change either Relay or 4-20mA link setting while unit is powered up.

The following information specifies the unit configuration options.

Fault Alarm Alarm

J1 J2 J3

Relays

Links J1, J2 and J3 set the contact operation for the Fault, Alarm 1 and Alarm 2 relays respectively.

J1 (Fault relay)

Normally open. Normally closed

(default)

J2 and J3 (Alarm 1 and 2 Relays)

Normally open (default) Normally closed

Note: Relay contacts are rated at 100mA (min), 2A (max), 30Vdc non-

inductive*. HIGHER VOLTAGES MUST NOT BE USED (* UL specification: 28Vdc, 1A)

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3. INSTALLATION

4-20mA loop

The summary table and subsequent diagrams identify the link and terminal settings for 4-20mA loop options.

Link

SK4

Terminal Isolated Source Sink

4 - 20mA loop topology

J5 -

- 4 4 - 20mA - 4 - 20mA - not used

- 5 4 - 20mA + not used 4 - 20mA +

Note: Total 4-20mA loop resistance should be less than 300 ohms.

Total power supply loop resistance should be less than 30 ohms (ECC cartridge) or 16 ohms (catalytic cartridge). Typical power consumption with relays active is 3.6W (ECC cartridge) or 5.6W (catalytic cartridge).

Isolated Mode (4-wire)

SK4

4 - 20mA -

4 - 20mA +

+24V dc

1 2 3

4 5 6 7

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3. INSTALLATION

Current Sink Mode (3-wire)

SK4

4 - 20mA +

+24V dc

Current Source Mode (3-wire)

SK4

4 - 20mA -

+24V dc

1 2 3 4

5 6 7

1 2 3

6 7

3.2 CERTIFIED JUNCTION BOX AND CERTIFIED SENSOR

This installation consists of a Certified Junction Box accessory with the Certified Sensor locally mounted at the box together with field wiring.

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3. INSTALLATION

Apex Transmitter Unit

with Certified Sensor mounted

in Certified Junction Box

North America-style installation)

(

Apex Transmitter Unit

Certified Junction Box

with Certified Sensor

Apex Transmitter Unit

with Certified Sensor mounted

in Certified Junction Box

(European

Apex Transmitter Unit

-style installation)

Certified Junction Box

with Certified Sensor

The system components can be installed by a single technician. This procedure describes how to:

• install a Certified Junction Box

• fit the Certified Sensor to the Certified Junction Box

• connect up the Certified Sensor and field wiring

• configure the Certified Junction Box

• install a gas sensing cartridge into the Certified Sensor

Refer to the General Installation Guidelines at the beginning of this chapter.

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3.2.1 Installing the Certified Junction Box

Caution: Ensure that the Certified Junction Box flamepath is not damaged

during this procedure. The flamepath is formed by the mating surfaces of the Certified Junction Box top and base (see diagrams).

(1) Isolate all associated power supplies and ensure that they remain OFF

during the installation procedure. Ensure a gas free atmosphere.

Lid retaining

cable

Flamepath

Terminal block

(3 off)

External

earth

Cable / conduit

entry (2 off)

Cable entry

sealing

plug (1 off)

Certification label

Certified Junction

Box Top

Interconnect PCB

Flamepath

Captive bolt

(3 off)

Sensor

mounting point

(2) Attach the Certified Junction Box to the supporting structure.

Drill two mounting holes (68mm apart) and use the unit’s mounting slots in the base with either two M10 bolts or a single 10mm U-bolt.

(3) Remove the Certified Junction Box lid.

Unscrew the three captive M8 bolts. The lid is retained by a metal retaining cable attached to the base.

(4) Fit and connect the field wiring.

See the subsequent tables and diagram for wiring details. Use either:

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3. INSTALLATION

Conduit - using one or both of the ∫ NPT conduit entries. Ensure that a conduit sealing fitting is installed within 18" of the enclosure on all conduit runs.

Cable - using any suitable flameproof cable entry device certified as Equipment to Directive 94/9/EC (ATEX).

Notes:

1. All unused cable/conduit entries must be sealed with a certified sealing plug (one plug is supplied fitted).

2. For a multi-sensor system using a network loop, both cable/conduit entries are used, one bringing the loop connections in and the other taking them out of the box. Remove the fitted certified sealing plug from the spare cable/conduit entry.

3.2.2 Fitting the Certified Sensor

(1) Fit the Certified Sensor to the Certified Junction Box.

Certified Junction

Box base

Certified Sensor

mounting point

Certified Sensor

Pass the sensor connecting cable through the sensor mounting point and then screw the sensor firmly into the sensor mounting point until it is fully home.

(2) Connect the sensor wiring.

See the following diagram and table for wiring details.

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3. INSTALLATION

Terminal/Number Function Colour

SK1 1 CAN_L White SK2 SK3

SK4 1 Screen * -

G - Earth Green/Yellow

* Only connect cable screens to these terminals if they are isolated at the remote

end.

2 CAN_H Green or Blue

3 +V Red

4 0V Black

5 Not used -

2 Screen * -

Note: Three sensor wiring terminal blocks are provided (SK1, SK2 SK3), any

two can be used.

SK2 SK1

1 2 3 4 5

5 4 3 2 1

2 1

SK4

Internal earth

12345

SK3

(3) Configure the Certified Junction Box if required.

Set the link on the Interconnect PCB for the required Controller Area network (CAN) setting. See 3.2.4.

(4) Refit the top to the Certified Junction Box base.

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Cautions:

1. Ensure that there is no moisture inside the Certified Junction Box before fitting the lid.

2. Use only the captive bolts supplied, replacement with alternative bolts will invalidate certification.

The top should be located using the locating pins on the Certified Junction Box base and then lowered onto the base. Ensure that the lid retaining cable and/or wiring are not trapped and the O-ring in the top is correctly located. Check that there is no discernible gap between the top and the base. Tighten the captive M8 bolts to 5Nm (3.68 footpounds).

3.2.3 Installing the Gas Sensing Cartridge

(1) Remove the cap from the Certified Sensor body.

Sensor body

Sensor cap

Rotate the cap or accessory 1/4 turn in an anticlockwise direction to release the bayonet fitting.

(2) Fit the gas sensing cartridge into the sensor body.

WARNING

Sensor Cartridges may contain corrosive solutions.

Dispose of according to local and national regulations.

Caution: Only cartridges with the following part numbers can be fitted to

the Certified Sensor:

2110B30x0, 31x0, 32x0, 33x0, 34x0 series

2110B3700 - 2110B3999 range

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Note: For remote CSA Certified Sensor installations combustible cartridges in

the range of part numbers 2110B3700 to 2110B3799 MUST NOT BE FITTED.

Caution: Do not force the cartridge as this may cause damage to the pins

of the connecting plugs. Twisting and pushing can bend the pins and make the cartridge inoperative.

Socket (2 off)

Plug

(2 off)

Locating

tab

recess

Sensor body

Note: If fitting an Oxygen cartridge ensure that the Oxygen Transducer Adaptor

supplied with the Oxygen cartridge is fitted to the Certified Sensor body. The adaptor is fitted to the sensor body via a bayonet fitting.

(3) Refit the cap to the Certified Sensor.

Reverse the removal procedure.

Sensor body

Locating

tab

Cartridge

Cartridge fitted to sensor

body

Sensor cap

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3. INSTALLATION

(5) Check for correct operation of the system by carrying out the procedures

described in Chapter 4.

3.2.4 Certified Junction Box Configuration

The following information specifies the Certified Junction Box configuration options.

Controller Area Network (CAN )Termination Link - J1

Terminated

Unterminated (default)

Note: Leave the link in the Unterminated position.

3.3 LONWORKS COMMUNICATIONS BOARD

The LonWorks Communications Board can be installed in the Transmitter Unit by a single person. It is fitted into the top of the unit to form part of theMain PCB assembly.

Note: Do not install a communications board into a UL or CSA certified Transmitter

Unit as approval for fitment is pending.

Refer to the General Installation Guidelines at the beginning of this chapter.

Fitting the board should be carried out by a qualified technician.

Electrical interconnections for the communications board are made at the same time as mechanical installation by means of plugs attached to the communications board. These plugs mate with existing sockets on the main PCB fitted to the Apex Transmitter Unit lid.

Once the board is fitted any external LonWorks network wiring required is connected.

Plug (2 off)

LonWorks board

Mounting pillar (4 off)

Earth lead

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3. INSTALLATION

Note: The board is supplied with the mounting pillars fitted to it.

This procedure describes how to:

• remove the Transmitter Unit top

• remove the Main PCB assembly from the top

• fit the LonWorks Communication Board to the Main PCB

• refit the Main PCB assembly into the top

• connect the LonWorks network wiring

• refit the Transmitter Unit top

• operational check and binding the LonWorks Communication

Board to the network

Refer to the General Installation Guidelines at the beginning of this chapter.

3.3.1 Removing the Transmitter Unit top

Cautions:

1. Observe precautions for handling electrostatic discharge sensitive devices.

2. Ensure that the Apex Transmitter Unit flamepath is not

damaged during this procedure. The flamepath is formed by the mating surfaces of the Apex Transmitter Unit top and base (see diagram).

(1) Isolate all associated power supplies and ensure that they remain OFF during

this procedure. Ensure a gas free atmosphere.

(2) Disconnect from the Transmitter Unit base the wire retaining cable fitted

between the top and the base.

Unscrew and remove the single M6 hexagon screw that secures the cable to the base.

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Unit top

Top retaining

cable

Flamepath

Locating

pins

Cable securing

screw

External

earth

Unit base

Cable / conduit

entry (2 off)

ZIF

Ribbon cable

Interconnect

PCB

Flamepath

Captive bolt

(3 off)

Certified

Sensor mounting

point

Cable entry sealing plug

(3) Detach the top of the Transmitter Unit.

Unscrew the three captive M8 bolts underneath the base. Lift the top clear of the locating pins. Take care not to damage or strain the ribbon cable connecting the top and the base. Support the top and ensure that it is supported whilst the next step is carried out.

(4) Unlatch the ribbon cable Zero Insertion Force (ZIF) connector on the

Interconnect PCB.

Grip the ends of the ZIF and pull it vertically upwards until it is felt to stop and the ribbon cable is loose.

(5) Pull the ribbon cable clear.

Remove the top and take to a workshop area.

3.3.2 Removing the Main PCB assembly from the top

(1) Place the top with the certificate face down on a flat surface.

This provides access to the components inside the top.

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3. INSTALLATION

Main PCB

Potted assembly

PCB

baffle

(2) Remove the PCB Baffle from the Transmitter Unit top.

Unscrew and remove the two PCB Baffle securing screws.

(3) Disconnect the flying lead plug and socket connecting the Main PCB Potted

assembly to the top.

(4) Slide the Main PCB Potted assembly out of the Apex Transmitter Unit top.

Ribbon

cable

PCB baffle

securing screw

(2 off)

3.3.3 Fitting the LonWorks Communication Board to the Main PCB

Main PCB

Flying lead

Main PCB

Potted assembly

(1) Place the Main PCB Potted assembly on a flat surface with the flying lead

and plug on top.

Push the flying lead to one side so that there is clear access to the Main PCB.

(2) Remove the LonWorks Communication Board from its antistatic bag.

(3) Position the Communication Board over the Main PCB.

Ensure the mounting pillars point downwards. Check that the two plugs on the Communication Board are correctly aligned with the sockets on the Main PCB and the mounting pillars are aligned with their mounting holes.

(4) Carefully press the Communication Board down evenly onto the Main PCB.

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Ensure that the pillars locate in their mounting holes and the electrical plugs are fully home.

Hole for communication

Flying lead

board mounting pillar

Ribbon

cable

Main PCB

Sockets

(5) Reconnect the flying lead plug and socket connecting the Main PCB to

the top.

3.3.4 Refitting the Main PCB Assembly into the Top

(1) Refit the Main PCB Potted assembly with Communication Board into the

top.

Reverse the removal procedure. The assembly should be fitted so that the communications board is on the same side as the LCD display with the ribbon cable at the top.

(2) Refit the PCB Baffle.

Caution: When refitting the parts into the top take care not to damage the

flying lead plug assembly wires.

Ensure that the vertical part of the baffle goes between the Main PCB and the flying lead (see diagram).

Push the Communication Board earth lead through the top middle hole in the baffle.

Secure the earth lead under one of the two baffle securing screws. Tighten the screws to 1.0Nm (0.74 foot-pounds).

Potted assembly

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3. INSTALLATION

Top, middle

PCB baffle

hole

3.3.5 Connecting the LonWorks Network Wiring

Main PCB

Flying lead

Main PCB Potted assembly

(1) Fit and connect the communication network field wiring to SK4 in the

base of the Transmitter Unit. Refer to the table and diagram for wiring details. Use either:

Conduit - using one or both of the 3/4 NPT conduit entries. Ensure that a conduit sealing fitting is installed within 18" of the enclosure on all conduit runs.

Cable - using any suitable flameproof cable entry device certified as Equipment to Directive 94/9/EC (ATEX).

Note: All unused cable/conduit entries must be sealed with a suitable certified

sealing plug (one plug is supplied with the Apex Transmitter Unit).

Terminal number Function Min. length of cable from entry

point

SK4 1 NET1 60mm

(Comms 2 NET2 60mm & Power)

3 Ground 60mm

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3. INSTALLATION

Note: Three terminal blocks are provided, any two can be used.

1 2 3

SK4

3.3.6 Refitting the Transmitter Unit Top

(1) Support the top.

Ensure that it is supported whilst the next step is carried out.

(2) Reconnect to the Transmitter Unit base the wire retaining cable fitted

between the top and the base.

Fit and tighten the single M6 hexagon screw that secures the cable to the base. Tighten the M6 screw to 3Nm (2.21 foot-pounds). Remove the support for the top and let the top down gently until it is supported by the retaining cable.

(3) Reconnect the ribbon cable into the ZIF connector on the Interconnect

PCB in the base of the Transmitter Unit.

Follow the reverse of the removal procedure ensuring that the ribbon is not twisted and is correctly centred relative to the ZIF connector before insertion. Make sure that the ribbon cable contacts face in the same direction as the arrow on the following diagram. Push the latch on the connector down evenly until it is fully engaged.

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3. INSTALLATION

(4) Refit the top to the Transmitter Unit base.

Cautions:

1. Ensure that there is no moisture inside the unit before fitting the top.

2. Use only the captive bolts supplied, replacement with alternative

bolts will invalidate certification.

The top should be located using the locating pins on the Apex base and then lowered onto the base. Ensure no wires are trapped and the O-ring in the top is correctly located. Check that there is no discernible gap between the top and the base.

Tighten the captive M8 bolts to 5Nm (3.68 foot-pounds).

(5) Check for correct operation of the system by carrying out the procedures

described in the following section.

3.3.7 Operational Check

After installing the Communication Board and connecting the communication network wiring it is necessary to check that the Apex Transmitter Unit, Certified Sensor and Communication Board are working correctly together and also bind the equipment, which now acts together as a node, to the communication network.

(1) Power-up the Transmitter Unit. (2) Check that the Transmitter Unit completes its start-up sequence

successfully.

The Gas Reading should be displayed. Refer to the Fault Diagnosis sub- section in Chapter 4 if an error message is displayed.

(3) Press the esc button on the front panel.

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3. INSTALLATION

The Main Menu is displayed.

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

(4) Select (highlight) the Configuration Menu option.

Use the up/down keys.

(5) Press the ok button. (6) Enter the current Level 2 password.

The Configuration Menu is displayed.

Configuration Menu

Change Cartridge Configure 4-20mA Configure Relays Configure Alarms

Configure Digital

Select Language Configure Backlight

(7) Select (highlight) the Configure Digital option. (8) Press the ok button.

Use the up/down keys. The Configure Digital menu is shown displaying information similar to

the following.

Configure Digital

Network Type: LonWorks Connection Type: FTT-10 Node Id: 00A176094600 Node Address: N/A Baud Rate: 78.0kbit/s Node S/W Ver: 1.0 Assert Service PIN

For a full explanation of the information see Chapter 4.

(9) Select the Assert Service PIN option.

(10) Press the ok button.

This binds the node to the network.

The display automatically returns to the Configuration Menu.

(11) Press the esc button twice

This returns to the Gas Reading display via the Main Menu.

3.4 ACCESSORIES

All the accessories except for the Sunshade and filter are fitted to the Certified

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3. INSTALLATION

Sensor in the same way.

To fit a filter see the filter replacement instructions given in Chapter 5.

For the dimensions of the accessories see Chapter 2.

3.4.1 Flow Housing, Weather Protection, Collecting Cone

To fit the Flow Housing, Weather Protection, Collecting Cone accessories carry out the following procedure.

(1) Remove the Certified Sensor cap.

Sensor body

Sensor cap

Rotate the cap in an anticlockwise direction by 1/4 turn to release the bayonet fitting and pull off.

(2) Remove the rubber seal or filter from the sensor cap.

Lug location

Rubber seal

Filter

The rubber seal or filter is held in place in the cap by its three lugs. Carefully prise the rubber seal or filter free from the lug location points in the cap or accessory.

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3. INSTALLATION

(3) For the Collecting Cone only fit the cone onto the supplied housing.

The Collecting Cone is supplied as a kit of two parts that clip together.

(4) Fit the rubber seal/filter to the accessory.

Ensure that the rubber seal or filter is correctly installed in the accessory the correct way round with the three lugs closest to the front face of the accessory and correctly engaged in the locators.

(5) Fit the accessory onto the Certified Sensor body.

Reverse the cap removal procedure. The diagram shows the Flow Housing accessory fitted to the Certified Sensor.

Certified

Sensor

Flow

Housing

3.4.2 Sunshade

The sun shade can be used with other accessories in the range such as the Flow Housing, Weather Protection and Collecting Cone, but should be attached before any other accessories are fitted, or after their removal.

To fit the Sunshade accessory carry out the following procedure. (1) Remove the Certified Sensor cap or accessory.

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4. OPERATION

The Apex gas measuring system is controlled from the Transmitter Unit via a menu system, displayed on an LCD screen, and a set of control buttons.

This chapter provides operational information about the following:

• Display and control buttons

• Start-up

• Passwords

• Menus

• User Tasks

• Fault diagnosis

• System Calibration

• Binding the Communications Board to the Network

If an optional digital communications board is fitted in the Transmitter Unit, e.g. LonWorks, then control can also be achieved from a remote location.

4.1 DISPLAY AND CONTROL BUTTONS

esc

LCD screen

Control buttons

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4. OPERATION

4.1.1 LCD screen

The screen provides a graphical user interface that, during normal operation, displays gas reading information. It also displays information about the system to the user, via a password protected hierarchical system of menus, together with system fault and information messages.

Caution: Gas events occurring whilst in menus are not reported locally.

4.1.2 Control buttons

The four buttons on the front panel below the LCD screen have the following functions:

(esc) is used to exit/cancel the current screen/option and return to the previous screen/option.

(up) is used to move upwards through the menu lists and to select (highlight) a required menu option. It is also used to increment displayed values.

(down) is used to move downwards through the menu lists and to select (highlight) a required menu option. It is also used to decrement displayed values.

(ok) is used to execute/acknowledge the chosen item.

The buttons are also used to enter the current password when required to access different menu levels (see 4.3 and 4.4).

Note: If a user response using the buttons is not made to a required menu

action, e.g. change/accept a displayed setting value, then the system waits for approximately 10 minutes before the process is aborted and the unit reverts to normal operation with the display showing the normal Gas Reading screen.

If a value had been displayed and not changed within the timeout period the system reverts to the status quo and uses the previously stored setting.

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4. OPERATION

4.2 START-UP

Switch on the power supply to the Apex Transmitter Unit.

With a correctly installed Certified Sensor the following information is shown sequentially on the LCD screen:

ZELLWEGER

ANALYTICS

INITIALISING

CONNECTING

The Transmitter Unit initially waits for the Certified Sensor to stabilise, during which period the 4-20mA output is inhibited (2mA). Wait for 15 minutes to ensure sensor stabilisation has occurred before continuing.

If the sensor does not stabilise during the initialisation period (15 minutes), one of the fault (F) or warning (W) alarm messages shown in Section 4.6 is displayed.

When the Certified Sensor stabilises, the LCD screen shows the current Gas Reading together with the gas identity, full scale, and the units of measurement.”

Note: If the current Gas Reading exceeds full scale the displayed reading will be replaced with ’ >>>>’.”

This information is also transmitted on the 4-20mA output and optionally on the digital network if a communications board is fitted in the Transmitter Unit.

Note: If the Transmitter Unit has a LonWorks Communications Board fitted then

the unit will, at some stage, need to be bound to the LonWorks network. To do this carry out the LonWorks binding procedure described at the end of this chapter.

CO 100 ppm

4.3 PASSWORDS

Caution: Always store passwords in a secure place. Do not let

unauthorised users access to them.

The different parts of the high-level menu structure are protected from different levels of user by assigning a set of three different passwords.

The three password levels correspond to the following types of system user:

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4. OPERATION

• Level 1 System operator

• Level 2 System technician

• Level 3 System administrator

For example the Level 1 Password provides a system operator with access to day-to-day system operations, e.g. resetting alarms, checking the number of hours to the next Certified Sensor calibration, etc.

Level 2 Password could be assigned to a technician who needs to carry out more difficult operations such as calibrating the Certified Sensor.

Level 3 Password is for the system administrator to initially set and subsequently change passwords.

Once the three levels of password are specified then they are assigned to users by the system administrator depending on their access authority.

Each password consists of a sequence of control button presses.

When prompted during menu use, the user enters the current four-digit password required by pressing the four buttons in the correct sequence.

The entered password is represented on the LCD screen using asterisk characters (*).

Notes:

1. The last keystroke is not displayed on the screen. If the password is correct then the menu action previously selected is implemented immediately. If it is not correct the asterisks are cleared and the user must enter the correct password to proceed.

2. The default password supplied when the unit is first delivered is entered by pressing the (ok, up, down and down) buttons in sequence. This provides initial access to all of the menus.

The password level hierarchy allows the following:

• Functions available at Level 1 can also be accessed by using

the Level 2 or Level 3 passwords.

• Functions available at Level 2 can also be accessed by using

the Level 3 password. They cannot be accessed by Level 1.

• Functions available at Level 3 can only be accessed by using

the Level 3 password. They cannot be accessed by Level 1 or Level 2.

Note: After changing, the three passwords can also be reset to the default value.

Resetting all the passwords can only be carried out by the system administrator (see 4.3.2).

4.3.1 Setting/changing passwords

This combined procedure describes how to initially set passwords and how to

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4. OPERATION

subsequently change them.

(1) Power-up the system.

Wait for the Gas Reading display to stabilise.

(2) Press the esc button.

The Main Menu is displayed.

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

(3) Navigate to the Change Passwords Menu option.

Use the (up/down) keys.

(4) Press ok.

(5) Enter the current Level 3 password.

Use the buttons on the front panel. If setting passwords for the first time after unit delivery or password reset, enter the default password by pressing the (ok, up, down and down) buttons in sequence. Passwords are shown using asterisks (*) on the LCD.

The Change Passwords Menu is then displayed.

Change Passwords Menu Level 1 Password

Level 2 Password Level 3 Password

(6) Navigate to the password level option to be changed.

Use the (up/down) keys.

(7) Press ok.

The following screen is displayed:

Level 1 Password

Enter Old Password

This example shows the Level 1 Password screen. The screens for

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4. OPERATION

Levels 2 and 3 are similar.

(8) Enter the current password for the chosen level.

Use the buttons on the front panel. If setting the password for the first time after unit delivery or password reset, enter the default password by pressing the (ok, up, down and down) buttons in sequence. Passwords are shown using asterisks (*) on the LCD.

The following screen is displayed:

Level 1 Password

Enter New Password

(9) Enter the new password .

The following screen is displayed:

Level 1 Password

ReEnter New Password

(10) Enter the new password again .

The following screen is displayed:

Level 1 Password

Success! OK:Continue

(11) Press ok.

The display returns to the Change Passwords Menu.

Follow the procedure to set/change another password or press esc to return to the Main Menu.

Note: If the wrong password is entered at the prompt during step 10 the following

screen is displayed:

Level 1 Password

Failure! OK:Continue

(1) Press ok.

The display returns to the Change Passwords Menu.

(2) Repeat the procedure re-entering the

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4. OPERATION

correct password.

4.3.2 Password reset

To reset the access passwords to the default value carry out the following procedure:

(1) Power-up the system.

Wait for the Gas Reading display to stabilise.

(2) Press the esc button.

The Main Menu is displayed.

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

(3) Navigate to the Reset Passwords option.

Use the up/down keys.

(4) Press ok.

(5) At the prompt enter the following sequence of 8 keystrokes:

(up, down, ok, esc, esc, ok, down, up)

All the passwords are reset to their default value and the display returns to the Main Menu.

4.4 MENUS

Menus are used to implement control of the Transmitter Unit.

The system Main Menu is accessed by pressing the esc button at the Gas Reading display.

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Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

The Main Menu provides access to the primary tasks that are required when setting-up and controlling the Transmitter Unit and Certified Sensor. The following diagram summarises the menu hierarchy and options.

Calibration Menu Gas Calibrate

Gas Challenge 4-20 mA Set Zero Force 4-20mA Force Relays Force Digital

Configuration Menu Change Cartridge

Configure 4-20mA Configure Relays Configure Alarms Configure Digital

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

Select Language Configure Backlight

History Log Menu View History Log

Reset History Log

Display Menu Reset Alarms, Faults

Calibration Info Current Config

Change Passwords Menu Level 1 Password

Level 2 Password Level 3 Password

The subsequent subsections describe each of the main menu options in turn and show, using a flowchart format, how to access and implement their sub-options.

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The following symbols are used on the flowchart diagrams:

Gas Calibrate

Zero Calibration screen

Zero Gas

Calibrating

Success?

Use up/down

buttons

Sub-menu option selected.

Sub-menu action.

User action.

System process.

Decision.

Comment/instruction.

Button press.

4.4.1 Calibration Menu

Caution: The calibration procedure should only be performed by qualified

personnel.

Caution: "If "Yes" is selected for the "Span Calibrate?" option, the span

calibration must be completed successfully. Failure to do so will result in the unit signaling a "Calibration Needed" fault.

Calibration Menu Gas Calibrate

Gas Challenge 4-20 mA Set Zero Force 4-20mA Force Relays Force Digital

The Calibration Menu allows settings for the Transmitter Unit to be made, e.g. relay operation, and also settings for the Certified Sensor, e.g. gas calibrate.

This menu is protected by a Level 2 password.

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Gas Calibrate Calibration Menu

This option calibrates the Certified Sensor zero gas point and the span setting point (see 4.7 for details of how to carry out this procedure).

Gas Calibrate

Span Calibration screen

Zero Calibration screen

Zero Gas

Calibrating

Success?

Yes

Span calibration?

Yes

Fault

diagnosis

Calibration

Set Span

Concentration

(ppm)

Apply Gas

Calibrating

Success?

Yes

Calibration Menu

Use up/

down

buttons

Fault

diagnosis

Note: Depending on the type of gas cartridge fitted to the sensor, a choice of

two calibration gases may be displayed during Span Calibration, e.g. C7H8 has the options C7H8 and CH4 as choices. If so choose the one that will be used for calibration and press ok to continue.

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Gas Challenge Calibration Menu

Cautions:

1. Ensure that the area around the sensor is gas free before exiting the Gas Challenge mode.

2. Upon leaving gas challenge mode, all outputs return to their active states (from inhibited). Ensure that values have returned to zero to avoid extraneous alarms.

Provides the means to check correct operation of the unit in the presence of the gas being sensed without triggering alarms, etc.

Selecting this menu item puts the Transmitter Unit’s 4-20mA output into Inhibit and prevents the relays from being energised. The Transmitter Unit does not signal Fault if one is induced.

Gas Challenge

Gas Challenge screen

Apply Gas

Gas reading OK?

Yes

esc

Calibration Menu

Fault diagnosis

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4-20mA Set Zero Calibration Menu

4-20mA Set Zero

This option allows the zero point within the

4-20mA Set Zero screen

Set zero value -

3.5mA to 4.5mA

Use up/down

buttons

4-20mA signal range to be adjusted between 3.5 and 4.5mA. The default setting is 4.0mA. The offset applies to all 4-20mA output states including Inhibit, Warning, Overrange and Alarms.

Calibration Menu

Force 4-20mA Calibration Menu

Caution: Ensure that when forcing a signal on the 4-20mA output that

the effects on the network and controller are understood.

Force 4-20mA

This option allows the 4-20mA output to be

forced to a level selected between 0 and 22mA. The default is 1mA. The forced setting times out

Force 4-20mA screen

after approximately 5 minutes and the output

Set value - 0mA

to 22mA

Use up/down

buttons

returns to normal active operation.

esc

Calibration Menu

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Force Relays Calibration Menu

Caution: Ensure that when forcing a relay response that the effects on

the network and controller are understood, e.g. alarm activation, etc.

Provides the means to test the operation of the Transmitter Unit's relays by forcing them in turn to be energised/de-energised.

Relays return to normal set states when in Main Menu or after a timeout period of approximately 5 minutes.

Force Relays

Force Relays screen

Select relay to

test

Select relay

state

Test another relay?

Yes

esc

Use up/down

buttons

Use up/down

buttons

Calibration Menu

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Force Digital Calibration Menu

Caution: Ensure that when forcing a signal on the digital output that the

effects on the network and controller are understood, e.g. alarm activation, etc.

This option allows the digital output (if a digital communications board is fitted to the Transmitter Unit, e.g. LonWorks) to be forced to output an alarm signal, from Alarm 1 or Alarm 2 or no alarm.

Times out after approximately 5 minutes. The 4-20mA output and relays are unaffected.

Force Digital

Force Digital screen

Select output from 0, 1 or 2

esc

Calibration Menu

Use up/down buttons 0 = No output 1 = Alarm 1 output 2 = Alarm 2 output

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4.4.2 Configuration Menu

Configuration Menu Change Cartridge

Configure 4-20mA Configure Relays Configure Alarms Configure Digital Select Language Configure Backlight

Note: The Configure Backlight option is not available on CSA Certified

Transmitter Units.

The Configuration Menu changes settings for the Transmitter Unit, e.g. alarm operation, and also configures Certified Sensor operations, e.g. when changing the Certified Sensor gas cartridge.

This menu is protected by a Level 2 password.

Change Cartridge Configuration Menu

WARNINGS

This menu item allows the Certified Sensor gas cartridge to be changed under controlled conditions without generating faults or alarms. The process detects the presence or absence of the cartridge.

If a new cartridge type is inserted, the default alarm thresholds are loaded into the Transmitter Unit.

Note: If the new cartridge has different parameters to the previous cartridge,

Change cartridges using the procedure described below. Failure to correctly follow this procedure could result in the wrong cartridge being installed, and possibly non-detection of events. Alternatively, extraneous alarms could be triggered by chemicals detected but not of concern at a particular location.

Sensor Cartridges may contain corrosive solutions. Dispose of according to local and national regulations.

these are displayed for the operator to verify.

If a new cartridge of the same type as previously used is inserted, the configured alarm thresholds of the Transmitter Unit are loaded into the new cartridge’s actual parameters.

Caution: This only works if the Lowest Allowable Alarm Level (LAL) of

the new cartridge is lower than the transmitter’s configured alarm threshold. If it is not, a Fatal Fault error occurs.

This menu uses procedures from Chapter 5 where details about how to physically change the cartridge are provided.

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Change Cartridge

Change Cartridge screen

Follow cartridge

Change

cartridge

Checking

change

instructions

See Section 5

Success?

Yes

Calibration Menu

Fault diagnosis

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Configure 4-20mA Configuration Menu

Provides the means to configure the values for the 4-20mA signal output settings. Three settings are available:

Inhibit Value 1mA to 4mA, default is 1mA.

Warning Value 1mA to 6mA, default is 3mA.

Overrange Value 20mA to 21.5mA, default is 21mA.

Caution: When compliance with the ATEX EN50054 performance standard is required the warning and inhibit current shall not be configured to a value between than 3.1mA and 4.9mA

Once configured to a new value, the new value is output when the corresponding states occur.

When the Warning current is configured to be greater than 4mA the output pulses to the configured Warning current for approximately 1 second every 10 seconds.

Configure 4-20mA

Configure 4-20mA screen

Use up/down buttons to

Select setting

to change

Select value

choose setting from: Inhibit Warning Overrange

Use up/down

buttons

Select another setting?

Yes

esc

Calibration Menu

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Configure Relays Configuration Menu

This option allows the three Transmitter Unit relays to be configured for the current installation.

Latched relays are cleared by the Display Menu => Reset Alarms, Faults option or by switching the power off and on.

Configure Relays

Configure Relays screen

Select relay to

configure

Select relay

state

Select another relay?

Yes

Use up/down buttons to choose setting from: Fault Relay Alarm1 Relay Alarm2 Relay

Use up/down buttons to choose state from: ND (Normally De-energised) Non-Latching NE (Normally Energised) Non-Latching ND Latching NE Latching

esc

Configuration

Note: Alarm recovery is below alarm setpoint (25%).

As well as the ability to set the default state of the relay operation (energised or de-energised and latching or non-latching) by this method it is possible to set whether the relay contacts are normally open or normally closed by means of the links on the Transmitter Unit's Interconnect PCB (also see Chapter 3).

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Fault relay configuration example

Requirement: Normally De-energised, Non-Latching with the contact Normally Closed.

Implementation: Use the Configure Relays menu option to set the Fault relay operation requirement. Place the jumper on the J1 link to set the contact operation as follows:

This circuit diagram shows this.

Fault

Relay

(Relay in

de-energised

state)

Normally

Closed

Normally

Open

Fault Common

Fault

Other relays

J2 J3

similar

SK6

Fault

5 4 3

Alarm 1 2 1

Alarm 2

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4. OPERATION

Configure Alarms Configuration Menu

Caution: Alarm 2 value can be set below Alarm 1 value.

WARNING

When installed to measure flammable gas it is essential that

Indicates hazardous or unsafe practice which could result

either the Transmitter unit or control network is configured to

in severe injury or death to .personnel

latch the overrange condition. If the Transmitter unit local relays are used this should be achieved by enabling the overrange latching function of the Transmitter unit. Depletion of oxygen as a consequence of displacement by flammable gas can result in the gas reading returning to zero.

Provides the means to configure the point at which the alarms activate and whether overrange latching is required. The range of settings depends on the type of gas cartridge fitted to the Certified Sensor.

When the Transmitter Unit’s alarm thresholds are changed, the actual cartridge parameters are updated to reflect the Transmitter Unit's configured values.

The default state for Overrange latching is not latched. When activated, overrange latching causes the Transmitter Unit to latch the A1

and A2 Alarm relays and the 4-20mA output if an overrange gas condition is detected. Overrange latching only effects alarm relay latching after an overrange condition, not at the A1 and A2 alarm thresholds. Overrange latching only operatesin the normal Transmitter Unit active condition, not in Gas Challenge or Gas calibrate conditions.

Configure Alarms

Configure Alarms screen

Use up/down buttons to

Select alarm

action to configure

choose setting from: Alarm1 Relay Alarm2 Relay Overrange Latching

Set alarm value

or overrange

latching on/off

Select another option?

Use up/down buttons

esc

Yes

Configuration

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Configure Digital Configuration Menu

This menu item displays a screen that reports information about digital communications if a digital communications board is fitted to the Transmitter Unit, e.g. LonWorks. An example of a typical screen is as follows:

Configure Digital Network Type: LonWorks

Connection Type: FTT-10 Node Id: 00A176094800 Node Address: N/A Baud Rate: 78.0kbit/s Node S/W Ver: 1.0 Assert Service Pin

Network Type Displays the type of digital network installed. Connection Type Shows the type of transceiver used for digital output. Node Id Displays the identifier for the Transmitter Unit. Node Address Shows the address of the unit on the digital network,

if applicable.

Baud Rate Displays the current network communications rate. Node S/W Ver Shows the version of the board software.

The list also provides a choice, Assert Service Pin, to bind the Transmitter Unit to the host digital network (see 4.8).

Caution: If a Transmitter Unit is replaced, including the LonWorks PCB,

the replacement unit must be rebound to the LonWorks network. If the LonWorks PCB is removed from a faulty Transmitter Unit and fitted into a new Transmitter Unit, then the previous binding remains operational.

Configure Digital

Configure Digital screen

Assert Service

Configuration

Use up/down

buttons

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Select Language Configuration Menu

Provides the means to change the language in which text on the LCD screen is displayed.

Select Language

Select language screen

Choose

language from

list

Configuration

Use up/down

buttons

Configure Backlight Configuration Menu

This option allows the LCD screen backlight to be switched on or off.

Configure Backlight

Notes:

1. The Configure Backlight

control is not

Configure Backlight screen

available on CSA Certified Transmitter Units.

Toggle

backlight on or

off

Use up/down

buttons

2. The backlit screen is best viewed in a darkened

location.

Configuration

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WARNING

Alarms should be reset until it is confirmed that gas

is not present.

not

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4. OPERATION

4.4.3 Display Menu

Display Menu Reset Alarms, Faults

Calibration Info Current Config

The Display Menu reports back the current settings for the Transmitter Unit and Certified Sensor, e.g. calibration and configuration setting information.

This menu is protected by a Level 1 password.

Reset Alarms, Faults Display Menu

This option displays a screen that reports the state of each of the Transmitter Unit alarms. These are Fault Relay, Alarm1 Relay, Alarm2 Relay and Overrange. Each of these can be Active or Inactive.

It also allows latched alarms and overrange to be reset provided that the conditions responsible for causing them are no longer present.

Reset Alarms, Faults

Reset Alarms screen

Choose Reset

Alarms

Use up/down

buttons

Note: Alarms are

not reset until the esc button

is pressed to leave the

Display Menu

Alarms reset

and return to the Main Menu.

Display Menu

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Calibration Info Display Menu

This option displays a screen that reports information about the calibration of the Transmitter Unit and Certified Sensor. An example of a typical screen is as follows:

Calibration Info Last Calib: 163

Next Calib: 4205 Gas: PH3 FSD: 1.200 ppm Calib Interval: 4368 Predicted Life: 8571

Last Calib Displays the time in hours since the last calibration was

carried out.

Next Calib Displays the time in hours to the next calibration based on

the calibration interval (Calib Interval).

Gas Displays the type of gas cartridge fitted to the Certified

Sensor.

FSD Displays the maximum range of measurement. Calib Interval Displays the calibration interval in hours. Predicted Life Displays the typical life of the cartridge in hours.

Current Config Display Menu

This option displays 2 screens sequentially that report the current Transmitter Unit and Certified Sensor configuration settings, e.g. alarm settings, relay configurations, etc.

Initial Screen

An example of a typical initial screen is as follows:

Current Config Gas: PH3

FSD: 1.200 ppm Alarm1: 0.150 ppm Alarm2: 0.300 ppm Inhibit: 1.2 mA Warnin g: 3.0 mA Overrange 21.0 mA

Gas Reports the type of gas cartridge fitted to the Certified

Sensor.

FSD Displays the maximum range of gas measurement. Alarm1 Reports the alarm value set for Alarm1. Alarm2 Displays the alarm value set for Alarm2.

Inhibit Reports the value at which the 4-20mA Inhibit alarm is set

to activate.

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Warning Displays the value at which the 4-20mA Warning alarm is

set to activate.

Overrange Reports the value at which the 4-20mA Overrange alarm

is set to activate.

Second Screen

The second screen is displayed after navigating past the last entry on the initial screen by using the down button. A typical example is as follows:

Current Config Fault Relay: NE/L

Alarm1 Relay: Alarm2 Relay: NE/NL Tx Version: 1.02 Sensor

Version: 1.2

NE/NL

Fault Relay Reports the contact configuration (see Note) for the Fault

Relay.

Alarm1 Relay Displays the contact configuration (see Note) for the

Alarm1 Relay.

Alarm2 Relay Reports the contact configuration (see Note) for the Alarm2

Relay.

Tx Version Displays the current version of the transmitter software. Sensor Version Reports the current version of the Certified Sensor

software.

Note:

The abbreviations used on the screen for the contact settings mean the following:

ND Normally De-energised NE Normally Energised L Latching NL Non-Latching

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4.4.4 History Log Menu

History Log Menu View History Log

Reset History Log

The History Log Menu enables the recorded log for the unit to be viewed by the operator and also reset, or cleared. The logcontains information about events that happen during the life of the Transmitter Unit, e.g. time of last Certified Sensor calibration, time of last alarm, etc.

This menu is protected by a Level 2 password.

View History Log History Log Menu

This sub-menu item displays screens that consist of one or more pages of information, each displaying a message, recording the history of the unit since the log was last reset. The most recent event is viewed first.

History Page 32/61

000038:16 Tx Alert Sensor Comms Error

To navigate through the unit's history use the up/down buttons to view different pages.

Note: Keep the button pressed continuously to quickly scroll through the pages

of a large log record.

The top line of the message indicates the current page number and then the total number of pages in the log. An example is 22/45, i.e. 22nd page of 45 pages.

The next line contains the history clock time in hours and minutes since the event occurred. Each time you subsequently view this time therefore it will be different.

To calculate the date/time of a recorded event take the displayed time on screen away from the current date/time.

The next lines contain the text of the log recording the event.

After viewing the page(s) use the esc button to return to the History Log Menu.

Notes:

1. There is a maximum of 64 history entries. The first and subsequent recorded entries are overwritten as the log exceeds this figure.

2. The log time is not incremented when the unit is powered down.

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4. OPERATION

Reset History Log History Log Menu

Caution: Resetting the log removes all recorded data and resets the

history clock to zero.

This option is used to clear the current message content of the history log.

Reset History Log

Reset History Log screen

Are you sure?

Yes

Messages cleared

from log

History Log Menu

4.4.5 Change Passwords Menu

Change Passwords Menu Level 1 Password

Level 2 Password Level 3 Password

Use up/down

buttons

The Change Passwords Menu allows the system administrator to change the passwords for each of the three levels of access.

This menu is protected by a Level 3 password.

Level 1 Password Change Passwords Menu

This sub-menu item allows the Level 1 Password to be changed.

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4. OPERATION

Level 1 Password

Level 1 Password screen

Enter Old

Password

Enter New

Password

ReEnter New

Password

Success?

Yes

Change Passwords Menu

Use esc/up/

down/ok

buttons

Use esc/up/

down/ok

buttons

Use esc/up/

down/ok

buttons

Level 2 & Level 3 Password Change Passwords Menu

Both these sub-options allow the password to be changed in the same way as for the Level 1 Password.

4.4.6 Reset Passwords

The Reset Passwords option allows the system administrator to reset all the passwords back to the default password supplied when the unit is first delivered, i.e. (ok, up, down and down). This provides initial access to all of the menus. Access to the Reset Passwords option requires a special password that consists of the following sequence of 8 (not 4) control button presses:

(up, down, ok, esc, esc, ok, down, up)

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4.5 USER TASKS

The following table provides a quick reference list of typical tasks and how to carry them out via the menu system.

Tasks related to: Sub-Menu Sub-Menu Option User Level 4-20mA loop

Set Inhibit, Warning Configuration Configure 4-20mA 2 and Overrange levels Zero setting Calibration 4-20mA Set Zero 2 Test operation Calibration Force 4-20mA 2

Alarms

Set overrange latching Configuration Configure Alarms 2 on or off Set gas alarm levels Configuration Configure Alarms 2 Reset alarms Display Reset Alarms 1

Checking the unit’s settings

Calibration settings Display Calibration Information 1 Configuration settings Display Current Configuration 1

Checking the unit’s operational history

View the unit's log History Log View History Log 2 Clearing the history log History Log Reset History Log 2

Digital communications

View settings Configuration Configure Digital 2 Register the Configuration Configure Digital 2 communications board Test operation Calibration Force Digital 2

Display Screen

Turn backlight on/off * Configuration Configure Backlight 2 Change the on-screen Configuration Select Language 2 display language

Gas

Test unit with gas Calibration Gas Challenge 2 Change a gas sensor Configuration Change Cartridge 2 cartridge Calibrate gas Calibration Gas Calibrate 2

Passwords

Change a password Change Passwords Level 1 Password 3

Change Passwords Level 2 Password 3

Change Passwords Level 3 Password 3 Reset all passwords Reset passwords 3 to default

Relays

Set-up relay contacts Configuration Configure Relays 2 Test relays Calibration Force Relays 2

* The Configure Backlight control is not available on CSA Certified Transmitter

Units.

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4. OPERATION

4.6 FAULT DIAGNOSIS

Apex system faults can be those displayed on the Transmitter Unit screen or be of a general type. This section describes:

• Error messages displayed on the Transmitter Unit LCD screen.

These are either fault or warning types. They can normally be corrected at the Transmitter Unit or Certified Sensor.

• Errors that are not diagnosed by the system itself but need some action.

For example the Certified Sensor reads low when gas is applied. To rectify this fault the control system span needs to be adjusted.

• Signal ranges and fault conditions on the 4-20mA output.

• How to clear latched alarms

4.6.1 Displayed Error Messages

The error messages on the LCD screen are similar to the following:

Panels flash alternately until

F:No Cartridge

FAULT

fault cleared

The following table lists all the displayed Fault (F) and Warning (W) messages.

Message Cause/Remedy

F: Sensor Failed A Certified Sensor fault has developed.

Check the connections between transmitter and Certified Sensor.

If fault remains replace the complete Certified Sensor assembly.

F: No Cartridge The Certified Sensor reports there is no cartridge

fitted.

Check that the cartridge is fitted correctly.

If no cartridge present, fit required cartridge.

F: Wrong Cartridge The wrong type of cartridge has been fitted in the

Certified Sensor.

Replace the cartridge with correct type for the target gas.

F: Cartridge Failed The cartridge has failed.

Replace the cartridge.

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W: Temperature Error The cartridge is being operated at temperatures F: Temperature Error outside its specified temperature range.

Identify the cause of temperature problem. Fit suitable accessories or relocate the Certified

Sensor as appropriate. If fault persists replace the Certified Sensor.

W: End of Cell Life The cartridge is reaching, or has reached, the end F: End of Cell Life of its useful service life.

Warning - replace the cartridge within the

next 3 months.

Fault - replace the cartridge immediately.

W: Calibration Needed The cartridge requires calibration. F: Calibration Needed Perform zero and span calibration procedures.

FATAL FAULT A fatal error has occurred.

Note the displayed fault code and conditions, and contact the manufacturer for advice.

NO SENSOR The transmitter can not detect the presence of

the sensor.

Sensor Comms Fail Sensor incorrectly connected or faulty.

Check connections between Certified Sensor and transmitter unit.

If connections correct but message remains, replace Certified Sensor.

4.6.2 General Faults

The following table lists symptoms and causes for general fault diagnosis.

Gas Reading Symptom Cause/Remedy

Non-zero all the time Gas could be present, ensure that there is no target

gas in the atmosphere.

Background or other volatile organic gases that may be present, e.g. solvents, can interfere with the operation of the Certified Sensor.

Non-zero when no Adjust the system zero. gas is present (Calibration Menu => Gas Calibrate).

Low when gas Adjust the system span concentration setting. is applied (Calibration Menu => Gas Calibrate).

High when gas Adjust the system span concentration setting. is applied (Calibration Menu => Gas Calibrate).

Zero when gas Check that the Certified Sensor gas entry is not is applied obstructed.

Check that the sinter and any filter, if fitted, is not blocked. Replace the cartridge. (Configuration Menu => Change Cartridge).

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4. OPERATION

4.6.3 4-20mA output signal ranges and fault conditions

. .

Concentrations

Overrange

Pulsed warnings

Warnings

0.5

General Fault Output Signal Level Fault Conditions Type

Faults 0 - 0.5mA Sensor Failed

(default is 0.5mA) No Cartridge

Warnings 1.0 - 3.5mA - constant Temperature Error

4.0 - 6.0mA - pulsed 1/sec End of Cell Life

(default is 3mA) Calibration Needed

Over range 20 - 21.5mA Gas Reading exceeded Warnings (default is 21mA) full scale

Inhibit

Fault

Wrong Cartridge Cartridge Failed Temperature Error End of Cell Life Calibration Needed No Sensor, Sensor Comms Fail Fatal Fault

Inhibit - Locks relays and outputs

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4. OPERATION

4.6.4 Clearing latched alarms

WARNING

Alarms should be reset until it is confirmed that gas

The fault and alarm relays may be set to be latched (see Configuration Menu). So when an alarm message is displayed on the LCD screen it may continue to be displayed even when the fault causing the problem is corrected.

Note: Alarms may not be set to be latched, but because alarm recovery is set

25% below alarm setpoint it could appear that they are for a short while.

To reset a latched alarm carry out the following procedure:

not

is not present.

(1) Press esc at the Gas Reading display.

The Main Menu is displayed.

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

(2) Select (highlight) Display Menu from the list.

(3) Press ok.

(4) When prompted enter the current Level 1 password.

Obtain the password from the system administrator.

The Display Menu is shown.

Display Menu Reset Alarms, Faults

Calibration Info Current Config

(5) Select the Reset Alarms, Faults option.

(6) Press ok.

The Reset Alarms, Faults menu is displayed.

Reset Alarms, Faults Reset Alarms

Fault Relay: Inactive

Alarm1 Relay: Inactive

Relay: Inactive

Alarm2

Overrange: Inactive

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4. OPERATION

The menu displays the state of the fault and alarm relays and the overrange.

(7) Select Reset Alarms from the list.

(8) Press ok.

The display returns to the Display Menu.

Note: Alarms are not reset until the esc button is pressed to leave the Display

Menu and return to the Main Menu.

4.7 SYSTEM CALIBRATION

Caution: The calibration procedure should only be performed by qualified

personnel.

This section describes how to calibrate the gas cartridge fitted to an Apex Certified Sensor. The Transmitter Unit and other system components do not require calibration. This procedure is sometimes referred to as system or sensor calibration.

Cartridge are supplied from the factory fully calibrated for the target gas, re-calibration at commissioning/start-up should not normally be required, However, if operating this product in accordance with EN50073:1999, or if local / national regulations require the cartridge to be calibrated this procedure should be followed. This procedure is also applicable if a cartridge requires re-calibration following a warning or fault message, or as part of routine maintenance

The calibration adjustments are carried out at the Transmitter Unit and gassing is performed at the Certified Sensor (this may be locally or remotely located).

The following equipment is required:

• Flow Housing accessory (Part No: 2110B2140) - fitted with rubber seal and supplied with loose hydrophobic filter

• Test gas

• Regulator

Note: Zero gas and Span gas should be at roughly the same humidity levels to

avoid erroneous cell responses.

A hydrophobic filter is supplied loose with the Flow Housing which must be fitted when calibrating sensors with flammable gas cartridges.

When calibrating sensors fitted with other cartridge types then the filter mounted in the sensor cap for normal gas sensing operation (if one was used) should be fitted to the Flow Housing.

(1) At the Certified Sensor remove the cap or accessory.

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4. OPERATION

Sensor body

Lug

Filter

lug location

(3 off)

Sensor cap

or accessory

Rotate the cap/accessory in an anticlockwise direction by 1/4 turn to release the bayonet fitting and pull off.

(2) If calibrating a sensor with a non-flammable gas cartridge remove the

filter, if fitted, from the sensor cap/accessory and fit it to the Flow Housing.

If fitted, the filter is held in place in the cap/accessory by its three lugs. Carefully prise the filter free from the lug location points in the cap or accessory.

If calibrating a sensor with a flammable gas cartridge fit the hydrophobic filter supplied with the Flow Housing into the housing.

In either case, to fit a filter into the Flow Housing, first remove the factoryfitted seal from the Flow Housing. The seal is held in place in the housing by its three lugs. Carefully prise the seal free from the lug location points in the housing.

The filter then locates in the Flow Housing in the same way as the removed seal. Ensure that the filter is placed in the Flow Housing the correct way round with the three lugs closest to the front face of the housing (where the gas pipes exit) and correctly engaged in the location points.

Filter

Lug

(3 off)

Filter

lug location

(3 off)

(3) Fit the Flow Housing onto the Certified Sensor body.

Flow Housing

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4. OPERATION

Reverse the cap removal procedure. The following diagram shows the Flow Housing accessory fitted to the Certified Sensor.

(4) Press the esc button at the Transmitter Unit.

The Main Menu is displayed.

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

(5) Navigate to the Calibration Menu option.

Certified

Sensor

Flow

Housing

Use the up/down keys.

(6) Press ok.

(7) Enter the current Level 2 password.

The Calibration Menu is displayed.

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4. OPERATION

Calibration Menu Gas Calibrate

Gas Challenge 4-20 mA Set Zero Force 4-20mA Force Relays Force Digital

(8) Navigate to the Gas Calibrate option.

Use the up/down keys.

(9) Press ok.

The Zero Calibration screen is displayed with the message:

Zero Gas then <OK>

(10) Ensure there is no gas present on the Certified Sensor.

If gas is suspected to be in the vicinity of the sensor either check the area using a calibrated portable gas sensing device, e.g. Zellweger Analytic's Impact, or flow clean air over the Certified Sensor using the Flow Housing accessory .

(11) Press ok.

The Transmitter Unit zeros the sensor. The LCD screen displays the message:

Calibrating - Wait

When successfully completed the LCD screen shows the message:

Success! OK:Continue

(12) Press ok.

The Span Calibration screen is displayed with the message:

Calibrate? OK/ESC

This gives the choice to stop the calibration procedure at this point (after zero calibration) or continue to include the span and full gas calibration.

(13) Press ok to continue with Span Calibration.

To skip the span calibration process, press the esc key.

Note: At this point, depending on the type of gas cartridge fitted to the sensor, a

choice of two calibration gases may be displayed, e.g. C7H8 has the options C7H8 and CH4 as choices. If so choose the one that will be used for calibration and press ok. Otherwise the process continues at the following step.

(14) Set the required test gas Span Conc. value.

Use the up/down keys.

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4. OPERATION

(15) Press ok.

The LCD screen displays the message:

Apply Gas then <OK>

(16) Connect the Flow Housing (using either gas pipe) to the regulated cylinder

containing a known concentration of the target gas at approximately the sensor alarm point, e.g. 50% LEL Methane in air.

It is recommended for most sticky gases the tubing should be PTFE with short pieces of rubber tube to make the final connection due to the inflexibility of PTFE. This minimises adhesion of the gas to the tube surface and allows for more accurate measurement.

WARNING

As some test gases may be hazardous, the Flow Housing

outlet should exhaust to a safe area.

(17) Apply the target gas to the Certified Sensor.

Pass the gas through the flow housing at a rate of between 0.7l/m

and 1.0l/m. Wait for the gas reading to stabilise before continuing

Note: Certified Sensors should be calibrated at concentrations representative

of those to be measured. It is always recommended that the Certified Sensor is calibrated with the target gas it is to detect.

Caution: Where the user calibrates any Certified Sensor using a different

gas, responsibility for identifying and recording calibration rests with the user. Refer to the local regulations where appropriate.

(18) Press ok.

The LCD screen displays the message:

Calibrating - Wait

(19) When calibration is successfully completed the message is displayed:

Success! OK:Continue

Ensure that the sensor and the vicinity around it is clear all traces of the calibration gas before continuing. This is to avoid triggering spurious alarms.

If calibration fails at any point discard the cartridge and replace with a new one (see Chapter 5).

(20) Press ok.

The Calibration Menu is displayed.

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4. OPERATION

(21) Press the esc button twice.

The Main Menu and then the Gas Reading screen is displayed.

(22) Remove the test equipment, refit the sensor cap to the sensor (with

reinstalled filter if previously removed for the test) and return the system to normal operation (see 4.2).

4.8 BINDING COMMUNICATION BOARDS TO NETWORKS

This section describes how to carry out the configuration procedure necessary to bind a LonWorks Communications Board to the digital network. As the board forms part of the Transmitter Unit the component becomes a node on the network.

The procedure is necessary after fitting a LonWorks Communications Board to an Apex Transmitter Unit and connecting the digital network wiring (also see Chapter 3).

(1) Power-up the Transmitter Unit.

(2) Check that the Transmitter Unit completes its start-up sequence

successfully.

The Gas Reading should be displayed. Refer to 4.6 if an error message is displayed.

(3) Press the esc button on the front panel.

The Main Menu is displayed.

Main Menu Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

(4) Select the Configuration Menu option.

Use the up/down keys.

(5) Press the enter button.

(6) Enter the current Level 2 password.

The Configuration Menu is displayed.

Configuration Menu

Change Cartridge Configure 4-20mA Configure Relays Configure Alarms

Configure Digital

Select Language Configure Backlight

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4. OPERATION

(7) Select the Configure Digital option.

(8) Press the enter button.

The Configure Digital menu is shown displaying information similar to the following.

Configure Digital Network Type: LonWorks

Connection Type: FTT-10 Node Id: 00A176094800 Node Address: N/A Baud Rate: 78.0kbit/s Node S/W Ver: 1.0 Assert Service Pin

For a full explanation of the information see the Configure Digital menu option described earlier in this chapter.

(9) Select the Assert Service PIN option.

Use the up/down keys.

(10) Press the enter button.

This binds the node to the network controller.

The display automatically returns to the Configuration Menu.

(11) Press the esc button twice

This returns to the Gas Reading display via the Main Menu.

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5. MAINTENANCE

The Apex system requires some routine maintenance.

This section provides information about the following:

• Schedule for routine maintenance

• Procedures for routine maintenance/parts replacement

5.1 ROUTINE MAINTENANCE SCHEDULE

The following table lists the recommended Apex system maintenance tasks and their frequency.

Sensor Type Frequency Maintenance Action Equipment

Required

All models On overrange Calibrate the Test gas,

gas alarm system (see regulator,

Chapter 4). flow Replace the sensor housing. cartridge if necessary.

All models On suspected Calibrate the Test gas,

exposure to system (see regulator, contaminating Chapter 4). flow gases Replace the sensor housing.

cartridge if necessary.

All models 3 monthly Check the filters/cartridge

face for cleanliness. Replace if required.

All models 6 monthly Calibrate the Test gas,

system (see regulator, Chapter 4). flow

housing.

Cl2, O2, and NH3 Annually Replace the sensor

cartridge if required.

H2S, CO 2 yearly Replace the sensor

cartridge if required.

Note: No routine calibration is required for the Transmitter Unit or Certified Sensor

electronics. Only the cartridge can be re-calibrated. This procedure is also sometimes referred to as system or sensor calibration.

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5. MAINTENANCE

5.2 MAINTENANCE PROCEDURES /PARTS REPLACEMENT

The following sections describe how to carry out the tasks listed in the maintenance schedule and how to replace parts suggested by Fault Diagnosis in Chapter 4. It tells how to change the following items:

• Certified Sensor Filter

• Certified Sensor Cartridge

• Certified Sensor

• Transmitter Unit Front Panel Assembly

• CSA Transmitter Unit User Interface Cover Assembly

5.2.1 Changing the Certified Sensor Filter

The Certified Sensor filter is located in the sensor cap or accessory attached to the end of the sensor body. This procedure allows the filter to be safely changed with the unit powered-up.

Note: Before starting the procedure check that the new filter is the correct type

for the application. Three filter types are available: Mesh, Hydrophobic and Carbon (see Chapter 2 and Appendix C).

To replace the filter carry out the following procedure:

(1) Remove the Certified Sensor cap or accessory from the sensor body.

Rotate the cap or accessory in an anticlockwise direction by 1/4 turn to release the bayonet fitting and pull off.

Sensor body

Lug

Filter

(3 off)

Filter

lug location

Sensor cap

or accessory

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5. MAINTENANCE

(2) Remove the existing filter.

The filter is held in place in the cap by its three lugs. Carefully prise the filter free from the lug location points in the cap or accessory.

(3) Insert a new filter.

Ensure that the filter is correctly placed in the cap the correct way round with the three lugs closest to the front face of the cap or accessory and correctly engaged in the location points.

(4) Refit the cap or accessory.

Reverse the removal procedure.

5.2.2 Changing the Certified Sensor Cartridge

WARNINGS

Before installing a cartridge check that the number on the cartridge label matches the gas type and range for the function required. A list of cartridges is given in Appendix A.

Sensor Cartridges may contain corrosive solutions. Dispose of according to local and national regulations.

The Certified Sensor cartridge is located in the sensor body and protected by the cap or accessory. This procedure allows the cartridge to be safely changed with the unit powered-up.

To replace a cartridge carry out the following procedure:

(1) Press esc at the Gas Reading display.

The Main Menu is displayed.

Main Menu

Calibration Menu

Configuration Menu

Display Menu History Log Menu Change Passwords Menu Reset Passwords

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5. MAINTENANCE

(2) Select Configuration Menu from the list.

(3) Press ok.

(4) Enter the current Level 2 password.

For information about passwords see Chapter 4.

The Configuration Menu is displayed.

Configuration Menu Change Cartridge

Configure 4-20mA Configure Relays Configure Alarms Configure Digital Select Language Configure Backlight

(5) Select Change Cartridge from the menu list.

(6) Press ok.

The Change Cartridge screen is displayed.

Change Cartridge

Change Cartridge Now

Cartridge: Present

Whilst this screen is showing, the cartridge can be safely replaced with the unit powered-up as follows.

(7) Remove the Certified Sensor cap or accessory from the sensor body.

Sensor body

Sensor cap

Rotate the cap or accessory 1/4 turn in an anticlockwise direction to release the bayonet fitting.

(8) Remove the existing cartridge.

The cartridge plugs into two sockets in the Certified Sensor body and is located by means of a tab.

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5. MAINTENANCE

To remove the cartridge without damaging it, grasp the visible part of the cartridge and pull it firmly straight out of the sensor body without twisting. Slight resistance is initially felt as the cartridge is pulled out of the electrical sockets.

Notes:

1. If replacing an Oxygen cartridge with another Oxygen cartridge ensure that the Oxygen Transducer Adaptor is left in place on the Certified Sensor body.

2. If replacing an Oxygen cartridge with a different type of cartridge ensure that the Oxygen Transducer Adaptor is removed from the sensor body.

3. If replacing a standard cartridge with an Oxygen cartridge ensure that the Oxygen Transducer Adaptor supplied with the Oxygen cartridge is fitted to the Certified Sensor body. The adaptor is fitted to the sensor body via a bayonet fitting.

The Change Cartridge screen now displays the following message.

Change Cartridge

Change Cartridge Now

Cartridge: Not Present

(9) Fit the replacement cartridge.

Caution: Only cartridges with the following part numbers can be fitted

to the Certified Sensor:

2110B30x0, 31x0, 32x0, 33x0, 34x0 series 2110B3700 - 2110B3999 range

Notes:

1. Certified to CSA 22.2 No. 152 only when fitted with specific cartridges. See Specifications for details.

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5. MAINTENANCE

Caution: Do not force the cartridge as this may cause damage to the pins

of the connecting plugs. Twisting and pushing can bend the pins and make the cartridge inoperative.

Socket (2 off)

Locating

tab

recess

Sensor body

(10) Press ok.

The Change Cartridge screen now displays the following message.

This screen is displayed while the cartridge is checked by the Transmitter Unit.

When the checks are completed successfully the following type of information about the new cartridge is displayed on the screen.

Change Cartridge

Working Please Wait

Plug

(2 off)

Locating

tab

Cartridge

Check that the information displayed corresponds to the type of replacement cartridge fitted.

(11) Press ok.

The Change Cartridge screen now displays the following message.

Change Cartridge

New Cartridge Type Gas: HF FSD: 12.00 ppm Alarm1: 1.50ppm Alarm2: 3.00ppm

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5. MAINTENANCE

Change Cartridge

Success! OK: Continue

(12) Press ok.

The screen display returns to the Configuration Menu.

(13) Press esc twice.

The screen returns to the Gas Reading display.

(14) Refit the cap or accessory to the Certified Sensor.

Reverse the removal procedure.

(15) Check that the system is working correctly.

Use the Calibration Menu => Gas Challenge menu option to check correct operation of the unit in the presence of the gas being sensed without triggering alarms, etc. (see Chapter 4).

Apply gas using a gas test module.

(16) Return the system to normal operation.

5.2.3 Changing the Certified Sensor

The Certified Sensor may be mounted in a Transmitter Unit or remotely in a Certified Junction Box. When replacing certified components also refer to the Control Drawings (see Appendix B).

To replace a Certified Sensor fitted to a Transmitter Unit or a Certified Junction Box carry out the following procedure:

Caution: Ensure that the Transmitter Unit/Certified

Junction Box flamepath is not damaged during this procedure. The flamepath is formed by the mating surfaces of the Transmitter Unit/Certified Junction Box top and base (see the component diagrams in Chapter 3).

(1) Isolate all associated power supplies and ensure that they remain OFF

during this procedure. Ensure a gas free atmosphere.

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5. MAINTENANCE

Metal

retaining

cable

Transmitter Unit

top

Metal retaining

cable

Certified Junction

Box top

Top fixing screw

(3 off)

(2) Detach the Transmitter Unit or Certified Junction Box top.

Unscrew the three captive M8 hexagon key bolts underneath the base. Lift the top clear. For the Transmitter Unit only lift the top clear of the locating pins.

Caution: For the Transmitter Unit only take care not to damage or strain the

ribbon cable connecting the lid and the Interconnect PCB in the base of the unit.

(3) For the Transmitter Unit support the top and ensure that it is supported

whilst the next two steps are carried out.

For the Certified Junction Box let the metal retaining cable, attaching the base and the top, hold the top, then go to Step (7).

(4) Unlatch the ribbon cable Zero Insertion Force (ZIF) connector on the

Transmitter Unit Interconnect PCB.

Grip the ends of the ZIF and pull it vertically upwards until it is felt to stop and the ribbon cable is loose. Refer to the Transmitter Unit installation component diagrams in Chapter 3.

(5) Pull the ribbon cable clear.

(6) Remove the support from the Transmitter Unit top.

Let the metal retaining cable, attaching the base and the top, hold the top.

(7) Disconnect the Certified Sensor wiring.

Remove the wiring from the terminal blocks on the Interconnect PCB in the base of the Transmitter Unit or Certified Junction Box.

Record the location of the sensor wiring in the terminal blocks.

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5. MAINTENANCE

(8) Unscrew the Certified Sensor from its mounting point.

Certified

Sensor mounting

point

Certified

Sensor

The sensor unscrews in an anticlockwise direction. Feed the connecting cable out through the mounting point.

(9) Feed the cable from the replacement Certified Sensor in through the sensor

mounting point.

(10) Fit the replacement Certified Sensor.

Screw the threaded end of the replacement Certified Sensor firmly into the mounting point until it is fully home.

(11) Cut the sensor cable to the required length.

(12) Connect the sensor wiring to the terminals.

Refer to the wiring notes recorded in step 3 and to the diagram and wiring tables in Chapter 3.

(13) Refit the top to the Transmitter Unit or Certified Junction Box base.

Cautions:

1. Ensure that there is no moisture inside the unit before fitting the lid.

2. Use only the captive bolts supplied, replacement with alternative bolts will invalidate certification.

3. For the Transmitter Unit take care not to damage or strain the ribbon cable connecting the lid and the base.

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5. MAINTENANCE

The Transmitter Unit top should be aligned using the locating pins on the base and then lowered onto the base. The Junction Box base does not have the locating pins.

Ensure that the lid retaining cable and/or wiring are not trapped and the O-ring in the top is correctly located. Check that there is no discernible gap between the top and the base.

Tighten the captive M8 bolts to 5Nm (3.68 foot-pounds).

Note: If the replacement sensor is to be fitted with the original gas sensing cartridge,

then remove the cartridge from the replaced sensor and fit it to the new one following similar procedures to those in the sub-section 5.2.2.

(14) Switch on all associated power supplies.

(15) Check that the system is working correctly.

Use the Calibration Menu => Gas Challenge menu option to check correct operation of the unit in the presence of the gas being sensed without triggering alarms, etc. (see Chapter 4).

Apply gas using a gas test module.

(16) Return the system to normal operation.

See Chapter 4.

5.2.4 Changing the Transmitter Unit Front Panel Assembly

This assembly may need to be replaced if the screen becomes damaged or the display and buttons do not operate correctly. One of the following two types of Front Panel Assembly may be fitted depending on the Transmitter Unit version:

• CSA Transmitter Unit Front Panel Assembly 2110B2825

• All other versions 2110B2820

The assembly is attached to the top of the Transmitter Unit by two screws.

Front Panel

Apex top

Assembly

Retaining screws

esc

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5. MAINTENANCE

To replace the assembly carry out the following procedure.

(1) Isolate all associated power supplies and ensure that they remain OFF

during this procedure. Ensure a gas free atmosphere.

(2) Unscrew the two Front Panel Assembly retaining screws.

Use a hex-key tool to loosen the captive M4 screws.

(3) Pull the Front Panel Assembly forward away from the top.

Temporarily refit the M4 hex-key tool to one of the retaining screws and gently lever the assembly out of the recess in the top.

(4) Discard the removed Front Panel Assembly.

(5) Place the replacement assembly into the recess in the top of the Transmitter

Unit.

(6) Secure the two retaining screws.

Tighten to 2.0Nm.

(7) Switch on all associated power supplies.

(8) Check that the system is working correctly.

Ensure that the LCD screen is displaying a valid Gas Reading (see Chapter 4). Carry out a short random check of the menu system to ensure

the front panel buttons are working correctly and the Transmitter Unit is responding and the LCD Screen is showing the correct information.

(9) Return the system to normal operation.

See Chapter 4.

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APPENDIX A - SPECIFICATIONS

This section of the handbook provides specification information about the following components:

• Transmitter Unit

• Certified Sensor

• Cartridges

• Accessories

• LonWorks Communication Board

A.1 TRANSMITTER UNIT AND SENSOR

The Apex Transmitter Unit is designed to operate with the Certified Sensors specified in the tables later in this section. The Certified Sensors are designed so that they all have a common electrical interface to the Transmitters Unit. The cartridge data is digitised and processed into a gas reading by the Certified Sensor. The decision on whether gas alarms are present is also made within the Certified Sensor.

A.1.1 Gases and Ranges

The Transmitter Unit with Certified Sensor can be fitted with any of the cartridges listed in the tables in section A.2.

A.1.2 Input/Output

Power supply: +24VDC nominal (18-32V). Total power supply loop

resistance should be less than 30 ohms with ECC cartridge, 16 ohms with Catalytic cartridge.

Power consumption: Relays active - 3.6W ECC cartridge, 5.6W Catalytic

cartridge.

Relays: Three relays: A1, A2 and Fault.

Contact rating: 100mA (min), 2A (max) at 30Vdc non-inductive except UL/CSA where specification is +28VDC 1A.

Single pole change-over type connected to two terminals:

• one terminal connected to the relay common

• one terminal connected via a user configurable link to either the relay contact normally open or normally closed.

100

Honeywell Sieger Apex Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual