SMC Open Path Combustible Gas Detector Quasar 900 Owner's Manual

Quasar 900

Open-Path Gas Detection System

User's and Maintenance Manual

TM 888200, Rev. F, February 2013

Factory Mutual

Class I Div. 1 Groups B, C, D

Class II,III Div. 1 Groups E, F, G

ATEX, IECEx

Ex II 2 GD, Ex de ia [ia] IIB+H2 T4 Gb

Ex tb IIIC T135°C Db IP66

218 Little Falls Rd., Cedar Grove, NJ 0700S9 USA;

Phone: +1 (973) 239 8398 Fax: +1 (973) 239 7614

Web-Site: www.spectrex.net

; Email: [email protected]

The SafEye monitoring system described in this document is the property of

Spectrex, Inc.

No part of the hardware, software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Spectrex, Inc.

While great efforts have been made to assure the accuracy and clarity of this document, Spectrex, Inc. assumes no liability resulting from any omissions in this document, or from misuse of the information obtained herein. The information in this document has been carefully checked and is believed to be entirely reliable with all of the necessary information included. Spectrex Inc. reserves the right to make changes to any products described herein to improve reliability, function, or design, and reserves the right to revise this document and make changes from time to time in content hereof with no obligation to notify any persons of revisions or changes. Spectrex, Inc. does not assume any liability arising out of the application or any use of any product or circuit described herein; neither does it convey license under its patent rights or the rights of others.

Warning:

This manual should be carefully read by all individuals who have or will have responsibility for using, maintaining or servicing the product.

The Source and Detector are not field-repairable due to the meticulous alignment and calibration of the sensors and the respective circuits. Do not attempt to modify or repair the internal circuits or change their settings, as this will impair the system's performance and void the Spectrex, Inc. Product warranty.

Spectrex Inc. - SafEye

TM

Quasar 900 Gas Detector Manual – TM 888200, Rev. F February 2013

T ABLE OF CONTENTS

1. Scope ............................................................................................................... 1

1.1 Product Overview ................................................................................................... 1

1.2 Document Overview ................................................................................................ 2

2. Technical Description ..................................................................................... 3

2.1 Features .................................................................................................................... 3

2.2 Applications ............................................................................................................. 3

2.3 Principle of Operation ............................................................................................ 4

2.3.1 Definitions of Terms .......................................................................................... 4

2.3.2 Spectral Finger Print .......................................................................................... 4

2.3.3 Optical Path ........................................................................................................ 4

2.3.4 Microprocessor Based ........................................................................................ 4

2.3.5 Gas Sensitivity ................................................................................................... 5

2.3.6 Gas Calibration .................................................................................................. 5

2.3.7 Flash Source ....................................................................................................... 5

2.3.8 Heated Optics ..................................................................................................... 5

2.3.9 HART Protocol .................................................................................................. 5

2.3.10 Handheld Unit .................................................................................................. 6

2.3.11 Modbus RS-485 ............................................................................................... 6

2.3.12 Tilt Mount ........................................................................................................ 7

2.4 Product Certification .............................................................................................. 7

2.4.1 ATEX, IECEx .................................................................................................... 7

2.4.2 FM / FMC .......................................................................................................... 7

2.4.3 SIL-2 .................................................................................................................. 7

2.4.4 Functional Test................................................................................................... 7

2.5 Models and Types ................................................................................................... 8

2.6 Description ............................................................................................................ 10

2.6.1 Flash Source Unit (Figure 1) ............................................................................ 10

2.6.2 Detector Unit (Figure 2)................................................................................... 11

3. Operation Mode ............................................................................................. 12

3.1 Normal Mode ......................................................................................................... 12

3.2 “Maintenance Call” Mode (3mA Output) ......................................................... 12

3.3 Fault Mode ............................................................................................................. 12

3.4 Zero Calibration Mode (1mA Output) ............................................................... 13

3.5 Visual Indicators ................................................................................................... 13

3.6 Output Signals ....................................................................................................... 14

3.6.1 0-20mA Current Output ................................................................................... 14

3.6.2 RS-485 Interface .............................................................................................. 14

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3.7 System Set up......................................................................................................... 14

3.7.1 Detection Function Programming .................................................................... 14

3.7.2 Detection Set-Up Function (See 3.6.3 for default setting)............................... 15

3.7.3 Detector Default Set up .................................................................................... 16

4. Technical Specifications .............................................................................. 17

4.1 General Specifications .......................................................................................... 17

4.2 Electrical Specifications ........................................................................................ 18

4.3 Mechanical Specifications .................................................................................... 19

5. Installation Instructions ............................................................................... 22

5.1 Introduction ........................................................................................................... 22

5.2 General Considerations ........................................................................................ 22

5.2.1 Personnel .......................................................................................................... 22

5.2.2 Tools Required ................................................................................................. 22

5.2.3 Site Requirements ............................................................................................ 22

5.2.4 The Source and Detector .................................................................................. 22

5.2.5 Guidance Tips for Gas Detector Locations ...................................................... 23

5.3 Preparations for Installation ................................................................................ 23

5.4 Certification Instructions ..................................................................................... 24

5.5 Conduit /Cable Installation .................................................................................. 25

5.6 Detector / Source Mounting ................................................................................. 25

5.6.1 Tilt Kit P/N 888270: ........................................................................................ 25

5.6.2 Detector / Source Installation (Figure No. 3 and 4) ......................................... 26

5.7 Detector Wiring (Fig. 4) ....................................................................................... 26

5.8 Detector Terminal Wiring .................................................................................... 30

5.9 Flash Source Wiring ............................................................................................. 30

5.9.1 Wiring (Fig. 4 and 6) ....................................................................................... 30

5.9.2 Terminal Wiring............................................................................................... 31

6. Operating Instructions ................................................................................. 32

6.1 SafEye Operation .................................................................................................. 32

6.2 Alignment of Unit .................................................................................................. 32

6.3 Powering up the System ....................................................................................... 33

6.4 Safety Precautions ................................................................................................. 34

6.5 Signal Verification ................................................................................................ 34

6.5.1 Signal Values Limitation ................................................................................. 34

6.6 Zero Calibration.................................................................................................... 35

6.7 Functional Check of Unit ..................................................................................... 36

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7. Maintenance Instructions ............................................................................. 37

7.1 General Maintenance............................................................................................ 37

7.2 Periodic Maintenance ........................................................................................... 37

7.2.1 Routine Optical Surface Cleaning ................................................................... 38

7.2.2 Signal Verification ........................................................................................... 38

7.2.3 Function Check of Unit .................................................................................... 38

8. Troubleshooting ............................................................................................ 39

Appendices ....................................................................................................... 41

A.

Wiring Configurations ............................................................................... 43

B.

Accessories ................................................................................................ 49

B1. Tilt Mount P/N 888270 ...................................................................................... 49

B2. Pole Mount (U-Bolt 5 inch) P/N 799225 ........................................................... 49

B3. Commissioning Kit P/N 888247 ........................................................................ 49

B4. RS485 Hand-Held Diagnostic Unit P/N 799810................................................ 49

B5. HART Hand-Held Diagnostic Unit P/N 888810................................................ 49

B6. HART Hand-Held Harness Kit P/N 888815 ...................................................... 50

B7. USB/RS485 Harness Converter Kit P/N 794079-8 ........................................... 50

B8. Mini Laptop Kit P/N 777820-1 .......................................................................... 50

B9. Sunshade P/N 888263 ........................................................................................ 50

Technical Support ....................................................................................................... 51

L

IST

O

F

F

IGURES

Figure 1: Flash Source ..................................................................................................... 10

Figure 2: Detector ............................................................................................................ 11

Figure 3: Tilt Mount ......................................................................................................... 27

Figure 4: Detector & Tilt Mount Assembly ...................................................................... 28

Figure 5: Detector with Cover Removed .......................................................................... 29

Figure 6: Source with Cover Removed ............................................................................. 31

Figure 7: Detector Wiring Terminal ................................................................................. 43

Figure 8: Source Wiring Terminal ................................................................................... 44

Figure 9: 0-20mA Sink 4-Wire .......................................................................................... 45

Figure 10: 0-20mA Unisolated Sink 3-Wire ..................................................................... 45

Figure 11: 0-20mA Source 3-Wire ................................................................................... 46

Figure 12: RS-485 Networking for Wiring Option 3 ........................................................ 47

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L IST OF T ABLES

Table 1: Model Number and Installation Distance ............................................................ 8

Table 2: LED Indication ................................................................................................... 13

Table 3: LED Indication ................................................................................................... 13

Table 4: Standard (default) 0-20mA Current for the Gas Channel .................................. 14

Table 5: Detection Distance Range .................................................................................. 17

Table 6: Detector and Source Max. Power Consumption ................................................ 18

Table 7: Tilt Mount Kit ..................................................................................................... 25

Table 8: Wiring Options ................................................................................................... 30

Table 9: Wiring Options ................................................................................................... 31

Table 10: Maintenance Channels’ Limit Values .............................................................. 34

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Quasar 900 Gas Detector Manual – TM 888200, Rev. F, February 2013

1. Scope

1.1 Product Overview

The SafEye ‘Quasar 900’ IR Open-Path Gas Detector employs an advanced

Xenon Flash Source and integrated electronics package, both housed in improved, Stainless steel housings to provide high quality and performance, fast response, line of sight gas monitoring. This high quality is backed by 3 years warranty for the complete SafEye system and 10 years for the Xenon Flash source bulb.

Quasar 900 detects ambient combustible gases over a path length of up to 660ft.

(200 m), even in harsh environments where dust, fog, rain, snow or vibration can cause a high reduction of signal. The SafEye Quasar 900 can maintain operation in up to 90% signal obscuration and ±0.5 degree of misalignment.

Quasar 900 is manufactured only in stainless steel with heated optical window to improve performance in icing, snow, and condensation conditions. The programmable functions are available through a RS 485 or HART port used with

Host software supplied by Spectrex and a standard PC or an I.S handheld unit.

The Quasar Source and Detector unit enclosures are ATEX and IECEx approved

EExd flameproof with an integral segregated rear, EExe terminal compartment which avoids exposure of the sensors and electronics to surrounding environment. The Detector also has a plug interface for connection to handheld

PC or HART handheld, which is intrinsically safe. Hence the combined approval -

Ex de ia [ia] IIB+H2 T4, Ex tb IIIC T135°C Db IP66.

This manual consists of a full description of the Detector and its features. It contains instructions on the installation, operation and maintenance.

 To use the WinHost software to change the required functions and for maintenance, refer to Manual TM 888062 for instructions

 To use the I.S Handheld Unit to change the required functions and for maintenance, refer to Manual TM 888060 for instructions.

 To use HART Protocol to change the required functions and for maintenance refer to Manual TM 888030. The HART can be connected on the 0-20mA line or through the IS port for setting

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1.2 Document Overview

This manual describes the Detector and its features and provides instructions on the installation, operation and maintenance.

This manual is divided into separate sections as follows:

Section 1.

Section 2.

Section 3.

Section 4.

Scope - a general introduction and overview of the product and the

Manual, with a brief description of its content.

Technical Description - the Detector’s theory of operation.

Operation Mode - the Detector’s operation modes, user interface and indications.

Technical Specifications

- the Detector’s electrical, mechanical and

Section 5.

Section 6.

Section 7.

Section 8. environmental specifications.

Installation Instructions

Operating Instructions

Troubleshooting

, including wiring and mode setting.

and power-up procedures.

Maintenance Instructions

and support procedures.

Appendix A. Wiring option Configurations - wiring diagrams for installation.

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2. Technical Description

2.1 Features

 Long Range Gas Detection up to 660ft (200m)

 Simultaneous detection of C1-C8 flammable gases

 High Sensitivity and fast response to Hydrocarbon gases

 Heated optics to improve performance in icing, condensation and snow conditions

 Continuous operation in extreme and harsh environmental

Conditions

 Solar blind and immune to industrial environments

 Withstands extreme vibration conditions

 Standard 0-20 mA Output

 HART Protocol: Communication Protocol

 RS-485 Output Modbus compatible for PC Communication Network for a maximum of 247 systems

 Simple one person installation, alignment, and calibration

 ATEX & IECEx pending to EX II 2 GD, Ex de ia [ia] IIB+H2 T4 Gb


 SIL-2 pending by TUV to SIL-2 Requirement

 FM / FMC approved per: Class I Div. 1 Group B, C and D

Class II/III Div. 1 Group E, F and G

Functional approved per FM 6325

Functional tested by FM per EN60079-29-4

 Programmable configuration via the handheld unit

 Fast connection to I.S. approved handheld diagnostic/calibration unit

(3mA)

 Warranty 3 years for the complete SafEye system

 Warranty 10 years for Xenon Flash bulb

2.2 Applications

The Quasar 900 system may be used to monitor flammable gas concentration in various applications, such as:

 Petrochemical, pharmaceutical and other chemical storage and production areas.

 Flammable and toxic chemical storage sites and hazardous waste disposal areas.

 Refineries, oil platforms, pipelines, refueling stations and fuel storage facilities.

 Hazardous loading docks, transportation depots and shipping warehouses rooms

 Compressor and pumping stations

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Systems

 Offshore Floating Production Storage and Shipping vessels (FPSO), and fixed oil rigs.

2.3 Principle of Operation

The Quasar system detects gases through a dual spectral range monitoring, analyzing the absorption of radiation caused by gases in the atmosphere and comparing it (ratio) to background atmospheric absorption.

2.3.1 Definitions of Terms

The following list defines gas concentrations measurement terms that are used in this manual:

LEL Lower Explosive Limit - The minimum concentration of a substance

(gas/vapor) in air mixture that can be ignited. This mixture is different for every gas/vapor, measured in % of LEL.

LEL.m Integral of Concentration in LEL units (1 LEL = 100% LEL) and the operation distance in meters (m).

2.3.2 Spectral Finger Print

Each hazardous material is detected at a specific wavelength selected according to its specific spectral absorption or "finger print". The detection process involves two separate filters, one transmitting radiation that is absorbed by a particular gas and one that is not sensitive to it.

2.3.3 Optical Path

The presence of hazardous airborne vapors, gases, or aerosols in a monitored area is detected when the defined substance crosses/enters the optical path between the radiation source unit and the detector.

Hazardous gases /vapors present in the atmosphere cause absorption of the radiation pulse in the optical path between the radiating source and the detector unit at some specific wavelengths. This causes a change in the signal intensity received by the detector, which is translated into an output related to the detector’s measuring scale.

The system analyzes the defined open path at the spectral bands specific to the materials being monitored. The Automatic Gain Control (AGC) unit compensates for environmental disturbances such as fog, rain, etc., through a constant comparison with its dual spectral beam.

2.3.4 Microprocessor Based

The incoming signals are analyzed by the built in microprocessor.

A sophisticated mathematical algorithm calculates between the various functions of the detected signal thresholds. Statistics, ratio algorithms, data communications, diagnostics and other functions are performed.

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2.3.5 Gas Sensitivity

The SafEye Quasar 900 Model uses wavelengths around 2.3µ spectral band to measure air flammability potential between the source and detector. At this wavelength, all hydrocarbon materials have an absorption peak. This enables the detector to achieve both regular sensitivity of 0-5 LEL.m.

The Quasar 900 detects hydrocarbon gases including methane, ethylene, propane, ethane, butane etc.

2.3.6 Gas Calibration

The Quasar 900 has three calibrations that can be changed by function Setup:

Gas 1 – 100% methane

Gas 2 – 100% propane

Gas 3 – 100% ethylene

The full scale of methane and propane is 5 LEL.m.

The full scale of ethylene is 8 LEL.m.

2.3.7 Flash Source

The Xenon Flash Source was originally introduced in the first SafEye development and was designed to overcome false alarms, which were experienced by early generations of the open path system. The new SafEye

Quasar 900 employs the latest generation of flash bulbs to provide even more power and extended operation life (10 years).

2.3.8 Heated Optics

SafEye Quasar includes heated optics for the Detector and source. The heater increases the temperature of the optical surface by 5-8°F (3-5°C) above the ambient temperature to improve performance in icing, condensation and snow conditions. The heated optics is configured to automatically operate when the change in temperature requires the heating (default).

However, the heated optics can be defined as one of the following modes:

1. Not operated (not an option on source unit)

2. On continuously

3. Automatic, per temperature change (default)

See Detector set-up section 3.6.

When operated ‘per temperature change’, the user can define the start temperature below which the window will be heated (default 41°F (5°C)). This temperature can be defined between 32°F (0°C) to 122°F (50°C). The heating will stop when the temperature is 27°F (15°C) above the start temperature.

2.3.9 HART Protocol

The Quasar 900 uses the HART Protocol.

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HART Communication is a bi-directional industrial field communication protocol used to communicate between intelligent field instruments and host systems.

HART is the global standard for smart instrumentation and the majority of smart field devices installed in plants worldwide are HART-enabled.

HART technology is easy to use and very reliable.

Through the HART connection, the SafEye is able to perform: set-up

 Detector

 Detector health and status

For more details, refer to the HART Manual TM 888030.

The HART communication can be connected on the 0-20mA line or through the IS connection with a standard Handheld loaded with our host software and a special harness.

2.3.10 Handheld Unit

The I.S.-approved handheld diagnostics unit (Part no. 799810) is available to make installation and maintenance easier. This is an all-on-one diagnostic / calibration / interrogation plug-in unit that allows for one-person installation and maintenance.

The handheld unit can be used:

1. For on-site function programming and set up changes to the

Detector.

2. During installation, the handheld unit will display all the detector’s parameters and confirm that the installation has been completed successfully. It is also required to perform the necessary Zero calibration function

3. For Maintenance and Trouble Shooting – The handheld unit will provide recommendation of maintenance action to overcome and optimize the Detector’s performance.

For more details, refer to Manual TM 888061.

2.3.11 Modbus RS-485

For more advanced communications, the Quasar 900 has a RS-485 Modbuscompatible output that provides data communication from a network (up to 247

Detectors) to a host computer or universal controller for central monitoring. This feature enables easy maintenance, local and remote diagnostic tools.

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2.3.12 Tilt Mount

The new design stainless steel tilt mount provides a smaller installation footprint that can conform to limited space constraints, while the sturdy construction maintains alignment even in constant vibration. The improved ‘X’ and ‘Y’ axis worm-gear adjustments provide quick and easy alignment for installation and maintenance procedures.

2.4 Product Certification

The open path Quasar 900 is approved for the following certification:

 ATEX, IECEx- pending

 FM/FMC

 SIL-2 (TUV) – pending

2.4.1 ATEX, IECEx

The Quasar 900 is pending to ATEX per SIRA 12ATEX1212X and IECEx per

IECEx SIR 12.0086X per:

 ATEX Ex II 2 GD

Ex d e [ia] ia IIB+H2 T4 Gb


 T Ambient –55°C to +65°C

This product is suitable to use in hazardous zones 1 and 2 with IIB+H2 group vapors present.

2.4.2 FM / FMC

The Quasar 900 is approved to FM / FMC Explosion Proof per:

 Class I, Div. 1 Group B, C and D, T6 -58°F (-50°C) ≤ Ta ≤ 149°F (65°C)

 Dust Ignition Proof – Class II/III Div. 1, Group E, F and G.

 Ingress Protection – IP66 & IP68, NEMA 250 Type 6P.

IP68 is rated for 2 meter depth for 45 minutes.

2.4.3 SIL-2

The Quasar 900 is pending to SIL-2 requirement per IEC 61508.4, chapter 3.5.12.

The alert condition according to SIL-2 can be implemented by alert signal via 0-

20mA current loop.

2.4.4 Functional Test

The Quasar 900 was functional approved per FM 6325

The Quasar 900 was functional tested by FM per EN60079-29-4

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2.5 Models and Types

The Quasar 900 includes 4 models with the same detector and different source. That gives the ability to get detection at distances of 7-200m.

Table 1: Model Number and Installation Distance

Model No. Detector Source Min.

Installation

Max.

Installation

901

902

903

904

QR-X-11X

QR-X-11X

QR-X-11X

QR-X-11X

QT-X-11X

QT-X-21X

QT-X-31X

QT-X-41X

Distance Distance

23 ft ( 7 m) 66 ft ( 20 m)

50 ft (15 m) 132 ft ( 40 m)

115 ft (35 m) 330 ft (100m)

265 ft (80 m) 660 ft (200 m)

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P/N Definition of Quasar 900

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2.6 Description

The SafEye comprises two main units:

 The Flash Infrared Source (Transmitter)

 The Infrared Detector (Receiver)

Quasar 900 detects gases over an open path transmitted from the Flash Source to the Detector.

2.6.1 Flash Source Unit (Figure 1)

The Flash Source unit emits IR radiation pulses at the rate of two pulses per second. The pulse width (5-10µsec) is very powerful. The front of the source

SafEye has a lens that collimates the IR beam for maximum intensity. The front window is heated to improve performance in icing, condensation and snow conditions.

There are four source types:

For Short Range – 901 – source P/N QT-X-11X

For Medium Range 1- 901 – source P/N QT-X-21X

For Medium Range 2- 903 – source P/N QT-X-31X

For Long Range - 904 – source P/N QT-X-41X

1 Front Window Section 7 Earth

2 Label

10 Cable Inlet

11 Indication Led

Figure 1: Flash Source

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The sources for models 901, 902 and 903 are the same electronically and optically. The only difference is in the apparatus

The source for model 904 has different optics with different XENON lamp source.

2.6.2 Detector Unit (Figure 2)

The Detector receives the transmitted pulsed radiation signals from the Flash

Source. The signals are then amplified and fed into an analog to digital signal converter to be processed by the internal microprocessor. When the signals drop below a prescribed level, the internal microprocessor will compensate for them.

This will allow the signal to be maintained even in severe weather conditions. The data is sent to the output interface section.

The front window of the Detector is heated to improve performance in icing, condensation and snow conditions.

There is one detector type that is suitable for all Quasar models 901, 902, 903 and 904 – P/N QR-X-11X.

1 Front Window Section 7 Earth

2 Label

Plate

Box

10 Cable Inlet

11 Indication Led

Figure 2: Detector

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3. Operation Mode

The Quasar 900 has four operational modes:

 Normal

 “Maintenance

 Fault

 Zero

3.1 Normal Mode

This mode is used for gas detection. In normal mode, the following statuses are possible:

Normal - Signal received from gas detection is at safe levels.

Warning* - Gases have been detected at warning levels.

Alarm* - Gases have been detected at alarm levels.

* For the standard 0-20mA output, the Warning and Alarm levels are not

relevant. The user chooses these alarm levels at the controller. The output

Detector will be 4mA at zero reading and 20mA for full-scale reading.

- Warning and Alarm states are relevant where the stepped 0-20mA output is used and will energize the warning and alarm relays.

- If the RS485 output is used, the Detector changes its status from ‘N’ to ‘W’ at

Warning level and to ‘A’ at Alarm.

3.2 “Maintenance Call” Mode (3mA Output)

This mode indicates low signal or low signal ratio that may be caused by a dirty window; misalignment; poor source or that one of the Detectors parameters is at the ‘limit’ value.

The Detector continues to function and reads any gas present, but provides a

(3mA) pre-warning signal that a maintenance procedure is required.

3.3 Fault Mode

In the Fault status, there are three fault types:

 Fault 1 (2mA Output) – Non critical

If this occurs, it is due to blockage, very low signal or in the case of partial obscuration or full beam block and detection is no longer possible . The Detector’s proper operation can be restored (Auto reset) during operation if the condition causing the problem is removed or resolved. This mode will occur after a delay of 60 sec. from the moment of the fault. This delay is important to eliminate momentary obscuration due to passing through the beam.

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 Fault 2 (2.5mA) – Misalignment

This occurs due to poor alignment.

 Low Voltage Fault (1mA Output)

In this case, detection is disabled due to low voltage being supplied to the Detector. The Detector returns to proper operation only when proper voltage level restored.

 Fault 2 (1mA Output) – Critical

In this case, the detection is disabled due to electrical / software operational failure or central device (memory, processor) fault. Such fault causes the Detector to cease operation. In case of fault in 0-20mA loop, the output will be 0mA.

3.4 Zero Calibration Mode (1mA Output)

This mode zeros the base level from which the Detector will read gas.

It should only be performed when there are:

 No combustible gases present

 Clear path between the Flash Source and Detector

 Clear weather conditions.

Zero calibration must be done after installation, re-alignment and window cleaning, using the handheld unit (or Host software on PC)

3.5 Visual Indicators

One 3-color LED indicator is located in the back side of the detector/source and can be seen through the back cover window. See figure 1, 2 item 11.

The detector statuses are listed in table 2.

Table 2: LED Indication

Detector Status LED Color LED Mode

Alignment / Standby Yellow

Zero Calibration Yellow

1Hz – flashing

Constant

Warning Red –

Alarm Red flashing

Steady

The source statuses are listed in table 3.

Table 3: LED Indication

Source

Status

LED Color LED Mode

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3.6 Output Signals

The SafEye system provides the following outputs:

 Standard mA

 Optional RS-485 Output for PC Communications

3.6.1 0-20mA Current Output

The 0-20mA output provides the detector status measurement showing a continuous reading of exact gas concentration.

The 0-20mA functions as current sink, but it can be configured as Source (see

App. A).

The maximum permitted load resistance for the 0-20mA output is 600Ω.

Table 4: Standard (default) 0-20mA Current for the Gas Channel

Current Reading Status And Description

0mA +0.3mA Fault in 0-20mA loop

1mA ±0.3mA

2mA ±0.3mA

Zero Calibration (In Progress), Fault 2

Fault 1 (non-Critical)

2.5mA ± 0.3mA

3mA ±0.3mA

4mA±0.5mA No

4-20mA Continuous measuring of gas concentration at a range

21mA between 0 and full scale. For methane and propane

1 LEL.m. will give 3.2mA. For ethylene 1 LEL.m. will give

2mA.

Concentration is over the range limit (more than full-scale concentration).

Malignement fault

“Maintenance Call”

3.6.2 RS-485 Interface

The RS-485 input/output sends complete data information to a PC and receives data or control commands from the PC. The protocol is Modbus compatible. The communication with the PC that is operated through the interface is executed only when used with appropriate host software.

3.7 System Set up

3.7.1 Detection Function Programming

The SafEye Quasar 900 incorporates several functions that can be set by the customer using:

 Host software. Refer to manual TM 888062 for programming instructions.

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 Handheld unit (P/N 799810). Refer to manual TM 888060 for programming instructions. The connection of the handheld to the detector is fast and intrinsically safe and allows function change with no need to open the detector.

3.7.2 Detection Set-Up Function (See 3.6.3 for default setting)

a. Gas Calibration

Three gas types can be selected for maximum compatibility to the required measured gas (es).

Gas Type:

 Methane – full scale 5 LEL.m.

 Propane – full scale 5 LEL.m.

 Ethylene – full scale 8 LEL.m.

These three calibrations are standard calibrations.

b. Zero Calibration

Enable Zero calibration is performed according to background

Disable The Detectors are not updated due to change of background

c. Address Setup

The Detector provides up to 247 addresses that can be used in RS-485 communication link.

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d. Heated Optic Operation

The heated optics for the Detector unit can be defined as one of the following modes:

 OFF -Not operated

 ON -Operated continuously

 AUTO - On, per temperature change (default)

When operated per temperature change, the user can define the start temperature below which the window will be heated between 0 to 50°C. The

Detector will stop heating the window when the temperature will be 15°C above the defined temperature.

This feature relates to the Detector only.

The Source heated optic must be defined with the order in two options:

 Heated

 Start heating below 41°F (5°C). (default)

3.7.3 Detector Default Set up

The Detector has 8 functions that can be programmed according to the customer requirement at factory or at customer facility using a software Host or a handheld unit. The standard set up is as follows:

Detector Default Set Up

Gas type

BG Zero Calibration

1

Enabled

0-20mA Continuous

Heat mode Auto

Heat on 5

Source Default Set-Up

Heat Mode Auto

Heat On 5

The Source default can be changed with the same Host.

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4. Technical Specifications

4.1 General Specifications

Detected Gases: Simultaneous detection of C1-C8 flammable gases

Detection Distance range:

Table 5: Detection Distance Range

Model

No.

901

902

903

904

Detector

QR-X-11X

QR-X-11X

QR-X-11X

QR-X-11X

Source

QT-X-11X

QT-X-21X

QT-X-31X

QT-X-41X

Minimum

Installation

Maximum

Installation

Distance Distance

23 ft ( 7 m) 66 ft ( 20 m)

50 ft (15 m) 132 ft ( 40 m)

115 ft (35 m) 330 ft (100 m)

265 ft (80 m) 660 ft (200 m)

3 sec to T90

Response time:

Spectral Response:

Sensitivity Range:

Field of View:

Alignment Tolerance:

Drift:

Minimum Detectable Level:

Temperature Range:

Immunity to false alarm:

2.0 - 3.0 micron

Full Scale

LEL.m.

Warning

LEL.m.

Alarm

LEL.m.

Gas

1

Gas

2

Gas

3

Methane

Propane 5 1 3

Ethylene

Line of Sight

± 0.5°

± 7.5% of the reading or ±4% of the full scale

(whichever is greater)

0.15 LEL.m

-67°F (-55°C) to +149°F (+65°C)

Does not produce false alarm and is not influenced by Solar Radiation, Hydrocarbon

Flames and other external IR Radiation

Sources.

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4.2 Electrical Specifications

 Operating Voltage: 18- 32 VDC

 Power Consumption

Table 6: Detector and Source Max. Power Consumption

Without Heated Optic (Max.) With Heated Optic (Max.)

Detector

Source

200mA 250mA

200mA 250mA

 Electrical input protection:

The input circuit is protected against voltage-reversed polarity, voltage transients, surges and spikes according to EN50270.

 Electrical outputs

A. 0-20mA Current Output:

The 0-20mA is isolated sink option. This output can be configured as

Source – see Appendix A.

The maximum permitted load resistance is 600 ohm.

B. Communication Network:

The Detector is equipped with an RS 485-communication link that can be used in installations with computerized controllers.

Communication is compatible with the Modbus protocol:

 This protocol is a standard and is widely used.

 It enables continuous communication between a single standard Modbus controller (Master device) and a serial Network of up to 247

Detectors.

 It enables connection between different types of

Spectrex Detectors or other Modbus devices to the same Network.

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C. HART Protocol

The HART Protocol is a digital communication signal at low level on top of the 0-20mA.

This is a bi-directional field communications protocol used to communicate between intelligent field instruments and the Host

System.

Through the HART Protocol the detector can:

 Display set-up

 Display detector status and definition detector

 Troubleshooting

4.3 Mechanical Specifications

Enclosure:

Explosion Proof:

Functional Testing:

Water and dust tight:

The Detector, Source and tilt mount are St. St. 316

Electro chemical and passivized coating.

ATEX

& IECEx EX II 2 GD,

Ex d e [ia] ia IIB+H2 T4 Gb

FM / FMC


Class I Div. 1 Groups B, C, and D

Class II/III Div. 1 Groups E, F, and G

T6 -58°F (-50°C) ≤ Ta ≤ 149°F (65°C)

Approved per FM 6325

Tested by FM per EN60079-29-4

IP66 & IP68

IP68 is rated for 2 meter depth for 45 minutes.

NEMA 250 type 6p

Conformal coated. Electrical Modules:

Electrical connection:

Dimensions:

(Two options - specified at time of order)

2 X M25 (ISO) or 2 X 3/4” - 14NPT conduits.

Detector

Source

10.5 x 5.1 x 5.1 m (267 x 130 x 130mm)

10.5 x 5.1 x 5.1 in (267 x 130 x 130mm)

Tilt Mount 4.7 x 4.7 x 5.5 in (120 x 120 x 40mm)

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Weight: Detector 11lb

Source

Tilt Mount

11 lb

4.2 lb

(5 kg)

(1.9 kg)

4.4 Environmental Specifications

The SafEye system is designed to withstand harsh environmental conditions. The source and detector units compensate for adverse conditions while maintaining accuracy.

 High Temperature:

Designed to meet MIL-STD-810C, method 501.1 procedure II

Operating temperature: +149 ºF (+65 ºC)

Storage temperature: +149 ºF (+65 ºC)

 Low Temperature:

Designed to meet MIL-STD-810C, method 502.1, procedure I

Operating temperature: -4 ºF (-20 ºC)

Storage temperature: -40 ºF (-40 ºC)

 Humidity:

Designed to meet MIL-STD-810C, method 507.1, procedure IV relative humidity of up to 95% for the operational temperature range.

 Salt and Fog:

Designed to meet MIL-STD-810C, method 509.1 procedure I.

Exposure to a 5% salt solution for 48 hours.

 Water and Dust:

IP67 per En60529

IP66 per En60529

Dust: Totally protected against dust.

Liquids: Protected against immersion between 15 cm and 1m in depth.

Protected against all water jets from all directions.

 Shock and Vibration:

Vibration: Designed to meet MIL-STD-810C, method 514.2, procedure VIII.

Mechanical Shock: Designed to meet MIL-STD-810C, method 516.1, procedure I.

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 Electromagnetic Compatibility (EMC):

This product is in conformance with EMC per EN50270:

Radiated Emission EN55022

Conducted Emission

Radiated Immunity

Conducted Immunity

ESD

Burst

Surge

Magnetic Field

EN55022

EN61000-4-3

EN61000-4-6

EN61000-4-2

EN61000-4-4

EN61000-4-5

EN61000-4-8

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5. Installation Instructions

The Detector and Flash Source units can be installed and maintained with the use of general-purpose common tools and equipment. The installation procedure has to be performed by suitably qualified personnel.

5.1 Introduction

This section does not attempt to cover all of the standard practices and codes of installation. Rather, it emphasizes specific points of consideration and provides some general rules for suitably qualified personnel. Special safety precautions are stressed wherever applicable.

5.2 General Considerations

5.2.1 Personnel

Only suitably qualified personnel, familiar with the local codes and practices, trained for gas detection maintenance should be employed. Wiring should only be performed or supervised by someone with knowledge of electronics and in particular wiring installation.

5.2.2 Tools Required

The SafEye system requires the following tools:

 Set of screwdrivers

 Set of hex keys/Allan wrenches (supply with commissioning kit)

Multimeter

5.2.3 Site Requirements

The installation position of the SafEye system must take into account if the gas being monitored is heavier or lighter than air, and the individual site requirements.

The site selected must give the Detector a direct view to the Source. The mounting point for each item should be secure and stable with minimal vibrations.

Equipment should be either mounted in a position where it cannot be knocked out of alignment, or guarded from physical impact.

5.2.4 The Source and Detector

The appropriate Detector should be selected for the length of open path to be monitored. To allow for ageing of the Source and a reduction of the IR signal due to adverse weather we recommend using a Detector that is not at the limit of its operating range.

The open path between the Source and Detector and the immediate surroundings should be kept clear of obscuration that might hinder the free movement of air in the protected area or block the infrared beam.

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5.2.5 Guidance Tips for Gas Detector Locations

Guidance Tips for Gas Detector locations in order to provide the best detection coverage:

 Below potential leak source for heavier than air gases

 Above potential leak sources for lighter than air gases

 Near to leak sources along the expected leak trajectory, taking into account prevailing wind directions

 Between leak source and potential ignition sources

 In area with expected heavy fog, rain or snow, consider the effect of long range installation and install the Detector at shorter range with the maximum intensity model available.

5.3 Preparations for Installation

Installation should comply with local, national and international regulations and norms as applicable to gas Detectors and approved electrical devices installed in hazardous areas. The Detectors can be installed with general-purpose common tools and equipment.

The System should include the following (in addition to this manual): unit unit

QR-X-11X (See 2.5)

QT-X-X1X (See 2.5)

Tilt

Bases

P/N 888270 o

1 base is used for the Detector o

1 base is used for the Flash Source.

P/N 888247 Kit

The Commissioning kit includes Function Check Filter and the Telescope Kit, which is used during each SafEye installation and then removed. They can be reused for all other SafEye installations on the site. Therefore, only one set is provided for several detectors.

Kit

 Function Check Filters

P/N 888210

P/N 888260-1, -2

P/N 799810

Other accessories are available (per the customer request):

 Pole Mount (U-Bolt 5 inch) P/N 799225

 HART Hand-Held Diagnostic Unit

 HART Hand-Held Harness Kit

 USB/RS485 Harness Converter Kit

P/N 888810

P/N 888815

P/N 794079-8

P/N 777820-1 Laptop

 Sunshade

See details in Appendix B.

P/N 888263

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1 Verify the appropriate Purchase Order. Record the Part No. and the Serial

No. of the detectors and source units and the installation date in the appropriate log book.

2 Open the container package immediately prior to detector installation and visually inspect the detectors; sources and accessories.

3 Verify that all components required for the detector installation are readily available before commencing the installation. In the event that the installation is not completed in a single session, secure and seal detectors and conduits.

4 For wiring, use color-coded conductors or suitable wire markings or labels.

Cross section of wire must be between 1mm² to 2.5mm² (18- 14AWG). The selection of wire gauge should be based on the number of detectors used on the same loop and the distance from the control unit. Max. Wire connection in the same terminal is two wire cross section of each wire is 1mm².

5.4 Certification Instructions

Do not open even when isolated when flammable atmosphere present.

The cable entry point may exceed 182°F (83°C) suitable precautions should be taken when selecting the cable.

1 The equipment may be used with flammable gases and vapors with apparatus groups IIA and IIB +H2 T4 in the ambient temperature range

-67°F (-50°C) to +149°F (+65°C).

2 Installation shall be carried out by suitably trained personnel in accordance with the applicable code of practice e.g. EN 60079-14:1997.

3 Inspection and maintenance of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice e.g. EN 60079-17.

4 Repair of this equipment shall be carried out by suitably trained personnel in accordance with the applicable code of practice e.g. EN 60079-19.

5 The certification of this equipment relies upon the following materials used in its construction:

Enclosure: 316L Stainless Steel

Glass

Seals: EPDM

If the equipment is likely to come into contact with aggressive substances, then it is the responsibility of the user to take suitable precautions that prevent it from being adversely affected, thus ensuring that the type of

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Quasar 900 Gas Detector Manual – TM 888200, Rev. F, February 2013 protection provided by the equipment is not compromised.

Aggressive substances: e.g. acidic liquids or gases that may attack metals, or solvents that may affect polymeric materials.

Suitable precautions: e.g. regular checks as part of routine inspections or establishing from the material’s data sheets that it is resistant to specific chemicals.

6 Special Conditions for safe use:

The Quasar 900 Open Path Gas Detectors & Flash Source Units shall not be used as safety related devices in accordance with directive 94/9/EC.

5.5 Conduit /Cable Installation

1 To avoid water condensation in the detector, it should be installed with the conduits/cable entries facing downward

2 Use flexible conduits/cables for the last portion connecting to the detector

3 When pulling the cables through the conduits, ensure that they are not tangled or stressed. Extend the cables about 12 inch (30cm) beyond the

Detector location to accommodate wiring after installation.

4 After the conductor cables have been pulled through the conduits, perform a continuity test

5.6 Detector / Source Mounting

The Detector Source should be mounted with the Tilt Mount Kit, Model 888270.

The Tilt enables the Detector to be rotated up to 45º in all directions and fine alignment of up to 3º.

5.6.1 Tilt Kit P/N 888270:

Item

Tilt Mount

Screw

Table 7: Tilt Mount Kit

Qty Type/Model

Spring Washer

1 888269

1 M10 x 1.5

1 No. 10

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5.6.2 Detector / Source Installation (Figure No. 3 and 4)

The detector and the source can be installed in two ways with the same Tilt

Mount.

1 Place the Tilt Mount holding plate (item 1) in its designated location and secure it with (4) fasteners through four (4) holes dia. 8.5mm.

Notes:

(1) Skip this step if the Tilt Mount is already installed.

(2) Detector removal for maintenance purpose does not require Tilt Mount removal.

2 Place the Detector, with its conduit/cable inlets pointing downwards on the

Detector holding plate of the Tilt Mount (item 2). Secure the Detector with

M10 x 1.5 screw with No. M10 spring washers (9,10). Secure the detector to the Tilt Mount use Hex Key No. 7 for M10 x 1.5 screw (item 9).

3 Repeat 1 – 2 to install the Source.

5.7 Detector Wiring (Fig. 4)

1 Release the back cover secure bolt (item 15, fig. 4), and open the detector back cover (item 14, fig. 4). The chamber is now revealed.

2 Remove the protective plug mounted on the Detector conduit/cable entry inlet; pull the wires through the Detector inlet (item 4, fig. 5). Use a 3/4” –

14NPT or M25x1.5 explosion-proof conduit connection / cable gland to

3 Connect the wires to the required terminals (item 2, fig. 5) according to the wiring diagram. See paragraph 5.8 and figures 8, 10, 11& 12 Appendix A. assemble the cable / explosion-proof conduit to the Detector.

4 Connect the grounding wire to the ground screw outside Detector (item 3.

Fig.5). The Detector must be well grounded to Earth Ground.

5 Place and secure the Detector back cover by screwing the cover and securing it using the secure bolt (item 15, Fig. 4).

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1 Tilt Mount Holding Plate

4 Horizontal Fine Alignment

Tightening Screw

Description

5 Vertical Fine Alignment Tightening

Screw

2 Detector/Source Holding Plate 6 Vertical Crude Alignment Tightening

Screw

3 Horizontal Crude Alignment

Tightening Screw

7 Vertical Find Alignment Screw

8 Horizontal Fine Alignment Screw

Figure 3: Tilt Mount

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1 Tilt Mount Holding Plate

2 Detector/Source Holding Plate

Description

3 Horizontal Crude Alignment Tightening

Screw

4 Horizontal Fine Alignment Tightening

Screw

9 Detector Tightening Screw

10 Detector Tightening Washer

11 Detector

12 Telescope

5 Vertical Fine Alignment Tightening Screw 13 Telescope Tightening Bolt

6 Vertical Crude Alignment Tightening

Screw

14 Detector Back Cover

7 Vertical Find Alignment Screw

8 Horizontal Fine Alignment Screw

15 Detector Back Cover Secure

Bolt

Figure 4: Detector & Tilt Mount Assembly

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Description

1 Housing

2 Terminal Board 6 Connection to Handheld Unit

3 Earth Terminal 7 Detector Holding Plate

4 Inlet Conduit

Figure 5: Detector with Cover Removed

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5.8 Detector Terminal Wiring

The Detector has six wiring terminals.

The following describes the function of each electrical terminal of the detectors.

Table 8: Wiring Options

Terminal

No.

Function

5.9 Flash Source Wiring

5.9.1 Wiring (Fig. 4 and 6)

1 Release the back screw bolt (item 15, fig. 4), and open the source back cover (item 14, fig. 4). The chamber is now revealed.

2 Remove the protective plug mounted on the source conduit/cable entry inlet; pull the wires through the source inlet (item 4, fig. 6). Use a 3/4” – 14NPT or

M25x1.5 explosion-proof conduit connection / cable gland to assemble the cable / explosion-proof conduit to the Detector.

3 Connect the wires to the required terminals (item 2, fig. 6) according to the wiring diagram. See paragraph 5.9.2 and figure 9 Appendix A.

4 Connect the grounding wire to the ground screw outside Detector (item 3.

Fig.6). The source must be well grounded to Earth Ground.

5 Place and secure the source back cover by screwing the cover and

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5.9.2 Terminal Wiring

The Flash Source contains six wiring terminals.

Table 9: Wiring Options

Terminal

No.

Function

+24V

3 Spare

4 Spare

Description

1 Housing

Board 6 N/A

3 Earth Terminal 7 Detector Holding Plate

4 Inlet

Figure 6: Source with Cover Removed

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6. Operating Instructions

6.1 SafEye Operation

Once the system is positioned, it will monitor for possible specified gases automatically sending signals to a standard control panel or a PC. This section describes the alignment, calibration and operation.

Important!

Accurate Alignment is essential for proper operation of the SafEye system.

6.2 Alignment of Unit

Using the Telescope performs full alignment.

Alignment procedure should be performed in two stages: Crude alignment and fine adjustment.

The Telescope includes a Periscope that consists of a prism and an ocular located vertical to the Telescope assembly. This allows the user to observe into the opposite unit perpendicularly to the alignment when access from the rear of the unit is impossible. For installations where rear access is possible the

Periscope is not necessary. In this case it can be removed by releasing the

Periscope Fastening Screw.

Important Notes: a. Prior To Telescope Installation, verify that the Telescope and Its

Sight Mounting are free from any dirt to ensure proper alignment according to factory calibration. b. Do not attempt to change any factory calibration at the Telescope or its mounting. This may prevent optimal alignment.

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Alignment procedure (refer to Fig. 4):

1 Make sure that the Detector and the Flash Source are installed properly.

Installation instructions are described in section 5 of this document

2 Remove the front shield using the two captive screws.

3 Install the Telescope Assembly (12) on the detector/source front. Fasten the

Telescope with Fastening Screws (13).

Alignment a. Use ¼” Allen screw driver for all alignment screws b. Loosen screws 5, 6 c. Approximately aim the source horizontally toward the detector d. Tighten screw 5 e. Loosen screws 3, 4 f. Approximately aim the source vertically toward the detector g. Tighten screw 3

5 Repeat 4 for the Detector

6 Fine a. Aim the Source to the Detector within horizontal axis using screws 7. Aim the cross to the detector or source center of the front window (see figure 1 & 2 item 8). b. Tighten screw 6 c. Aim within the vertical axis using screw 8 d. Tighten screw 4

Make sure the telescope cross is pointing to the detector and source center of the window.

7 Repeat 6 for the Detector alignment

8 Remove the telescope. Install the front shield.

6.3 Powering up the System

Important!

Prior to any operation or maintenance, follow the Safety Precautions in

Section 6.4.

1. Make sure that the Source and Detector are connected to power.

2. Make sure that the 4-20mA meter is connected to the Detector.

3. Power up the system 18-32VDC.

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4. After 60 seconds, the current meter will indicate 4mA.

Note:

Zero calibration should be performed after powering up the system

(see section 6.6).

6.4 Safety Precautions

After powering up, the Detector requires minimal attention in order to function properly, but the following should be noted:

1. Follow the instructions in the Manual; refer to the drawings and specifications issued by the manufacturer.

2. Do not open the detector/source housing while power is supplied.

3. Disconnect external devices, such as automatic extinguishing systems before carrying out any maintenance task warranty.

6.5 Signal Verification

The signal verification can be done through Host software supplied by Spectrex.

Refer to Manual TM 888062 or by Handheld unit refer to Manual TM 888060.

6.5.1 Signal Values Limitation

Tables below describe the maintenance data channels limitation limits.

Table 10: Maintenance Channels’ Limit Values

Channel Installation Distance Maintenance

Signal 1

Min

Reference 1V Gain1 1V Gain2 1V Gain4 The minimum signal allowed is

2V at Gain9

1V Gain1

Med. Max

1V Gain2 1V Gain4 The minimum signal allowed is

2V at Gain9

NQRat 0

LEL

Temp.

Voltage

0.95 – 1.05

0 LEL x m

Up to 25° C beyond room temp.

32VDC > V > 18VDC

Must be 0.95 – 1.05

0 LEL x m

Up to 25° C beyond room temp.

32VDC > V > 18VDC

Note: The installation information refers to the installation distance.

Min: The minimum distance as defines at the model no.

Med: Half of max distance as defines at the model no.

Max: The max distance defines by the model no.

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6.6 Zero Calibration

Refer to Handheld manual TM 888062 for the following procedure.

Zero calibration must be done after.

1. Installation.

2. Realignment.

3. Window Cleaning.

4. Any change in Detector or Source position.

Precise alignment must be performed prior to the zero calibration procedure. Zero calibration should be performed in good weather conditions with insignificant gas concentrations in the surrounding environment or indoors.

1. Switch from Normal to Alignment mode indication.

2. Switch from Alignment to Standby mode.

3. Switch from Standby to Zero Calibration mode.

The 0-20mA output should now be at 1mA.

4. Wait up to 60 seconds until it switches to Normal mode. The

Detector reading is now set to normal. The 0-20mA output should now indicate 4mA.

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6.7 Functional Check of Unit

The SafEye system has been calibrated at the factory for the User's specific gas or vapor detection requirements. The following procedure validates the functional operation of the system. The Functional Check Filter is a convenient operational check used to confirm that response has not changed from previous readings.

The filter is not used for calibration, which is unnecessary, nor does it equate to a particular quantity of gas.

Caution:

Automatic activation or any external device that should not be activated during the calibration check should be disconnected.

Notes:

1. This functional verification procedure is for a standard 0-20mA output.

2. Prior to starting the functional check, verify that the power to the units is on and that the current of the 0-20mA channel is stable. Record the reading.

1. Position the Functional Check filter in front of the SafEye Detector.

2. The functional check filter's window must be centered over the viewing window of the Detector.

3. Wait 20 seconds.

4. Read the 0-20mA current. Determine the difference between the reading taken with and without the Functional Check Filter. This difference is the 0-20mA current variance.

5. Record the 0-20mA current variance in the Maintenance Logbook. If the variance is more than a 30% change when compared to the previous check (see delivery form), repeat the alignment.

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7. Maintenance Instructions

7.1 General Maintenance

The SafEye Quasar 900 requires only simple periodic maintenance to provide satisfactory service and achieve maximum performance. The Detector and

Source units can be maintained with the use of common tools and equipment.

Record the periodic test results in Maintenance Logbook with a copy of the delivery form inside.

7.2 Periodic Maintenance

Recommended cleaning of optical surfaces to be performed periodically.

Note:

The frequency of cleaning operations is ultimately dependent upon the existing environmental conditions and the applications used.

1 Proper maintenance will allow the SafEye system to retain maximum performance and reliability.

2 The optical surfaces of the Source and Detector viewing windows should be kept as clean as possible as it is an active device.

3 Alignment procedures must be performed each time that the Source or the

Detector unit has been opened or moved for any reason.

4 The Signal Verification Check corroborates the current signals from the Flash

Source compared to that of previous alignments. It is recommended to perform this check every 6-12 months. The signal should be checked according to threshold levels (see. 6.5).

5 The functional check should be performed every 6 months (see 6.7)

6 Alignment procedure should be performed only if the signals are below

Threshold value (see 6.5)

7 Zero calibration (see 6.6) must be done every time the Detector or Source is realigned or windows cleaned.

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7.2.1 Routine Optical Surface Cleaning

The SafEye system, being an optical device, must be kept as clean as possible.

The optical surfaces concerned are the Source and Detector viewing windows.

To clean the optical window, proceed as follows:

1. Turn off the power to the SafEye detector and source.

2. In places where dust or dirt has accumulated on the optical surface, clean the surface with a small, soft-bristle brush.

3. The surfaces must then be washed thoroughly with water and a mild non-abrasive detergent.

4. Thoroughly rinse the glass surface with clean water; ensuring no residue is left behind.

5. Dry the glass with a clean dry soft cloth.

6. Enter in the Maintenance Logbook: Date, name of person and company who performed the maintenance service.

7. Turn on power to the SafEye detector and source.

8. Perform signal verification (section 6.5).

9. Perform zero calibration (see section 6.6).

10. Perform functional check (see section 6.7)

7.2.2 Signal Verification

The signal verification check determines the proper operation of the open path. It checks the alignment and cleanliness of the window or any problem in Source or

Detector. Use the PC Host software to measure the signal verification.

Refer to Manual TM 888062 or use I.S handheld unit. Refer to Manual TM 888060 for non I.S HandHeld Unit.

7.2.3 Function Check of Unit

The SafEye Quasar has been calibrated at the factory per the user’s specific gas or vapor detection requirements. This procedure validates the functional operation. The functional check must be done periodically. Refer to 6.7 for instructions.

Caution:

Automatic activation or any external device that should not be activated during the calibration check should be disconnected.

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8. Troubleshooting

Problem

“Maintenance call” status or R and S are below 2 V

DC at Gain 9

NQRat below the permitted limit

Cause

Poor alignment

Dirt on the window

Poor light source

Detector fault

Gas in the path

NQRat above the permitted limit

Temperature higher than

25° C beyond the room temperature

Ratio1 and Ratio2 out of the limit

Poor alignment

Electronic problem

Poor alignment

Dirt on the window

Detector fault

Low input voltage

Voltage less than 16V

DC. The Detector at “V” fault

Solution

Perform alignment

Clean the window

Replace the light source

Replace/repair Detector

Make sure that the path is clean and the weather conditions are good

Perform alignment


Perform alignment

Clean the window


Check the power supply and installation

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Appendices

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A. Wiring Configurations

Figure 7: Detector Wiring Terminal

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Figure 8: Source Wiring Terminal

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Figure 9: 0-20mA Sink 4-Wire

Figure 10: 0-20mA Non-isolated Sink 3-Wire

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Figure 11: 0-20mA Source 3-Wire

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RS-485 Communication Network

By using the RS-485 network capability of the SafEye Quasar 900 detector and additional software, it is possible to connect up to 32 Detectors in an addressable system with four (4) wires only (2 for power and 2 for communication). Using repeaters, the number of Detectors can be much larger (32 Detectors for each repeater) up to 247 on the same four (4) wires. When using the RS-485 network, it is possible to read each Detector status (FAULT, WARNING, and ALARM).

For more details, consult the factory.

Figure 12: RS-485 Networking for Wiring Option 3

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B. Accessories

B1. Tilt Mount P/N 888270

The Tilt Mounting Brackets allow accurate alignment of the detector/source for proper operation of the open path. The brackets give crude alignment of ±30° and fine alignment of ±5°.

B2. Pole Mount (U-Bolt 5 inch) P/N 799225

The U-bolt mount is available to facilitate 5” pipe mounting.

B3. Commissioning Kit P/N 888247

The Commissioning/Alignment Kit unit is required for commissioning and future maintenance checks. Only one kit is required per site.

The kit includes an Alignment Telescope P/N 88210, a Magnetic Mode

Selector P/N 790285, two Function Check Filter P/N 888260-1, -2 for system installation and periodical functional testing along with socket keys for access to units.

B 4 . RS485 Hand-Held Diagnostic Unit P/N 799810

RS485 Hand-Held diagnostic unit, fitted with harness and converter to the quick plug connection which provides easy and economical connection, will provide verification, status and instructions for correcting the detector’s parameters.

This is an I.S. approved Hand-Held with I.S. harness and converter to suit the detector and programmed with a special host for maintenance and commissioning.

B5. HART Hand-Held Diagnostic Unit P/N 888810

HART Hand-Held diagnostic unit fitted with harness to the quick plug connection which provides easy and economical connection. The HART Hand-Held will provide verification, status and instructions for correcting the detector’s parameters.

This is an I.S. approved Hand-Held with a special harness to suit the detector and a host for maintenance and commissioning.

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B6. HART Hand-Held Harness Kit P/N 888815

A quick plug connection with harness which is connected on one side to a standard HART Hand-Held unit and includes Spectrex host software that can be uploaded to an existing Hand-Held (does not include the Hand-Held).

B7. USB/RS485 Harness Converter Kit P/N 794079-8

The USB RS485 Harness Kit with RS485/USB converter, used with Spectrex Host software, enables the user to connect to any available PC or laptop to reconfigure settings or perform diagnostics on the Quasar 900 gas detector.

Refer to manual TM777050 for programming instructions when using the USB

RS485 Harness Kit.

B8. Mini Laptop Kit P/N 777820-1

The mini laptop, pre-loaded with Spectrex software, enables the user to reconfigure settings or perform diagnostics on all flame and gas detectors series.

Refer to manual TM777070 for programming instructions when using the Mini

Laptop Kit. The kit includes cable harness with RS485/USB converter. The mini laptop is programmed with maintenance winhost for all detectors' type.

B9. Sunshade P/N 888263

The Sunshade is designed to protect the detector from the heat of the sun.

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Technical Support

For all technical assistance or support, contact:

218 Little Falls Road

Cedar Grove, NJ 07009, USA

Tel: +1 (973) 239 8398

Fax: +1 (973) 239 7614

Email: [email protected]

Web-site: www.spectrex.net

Your Local Office:

SPECTREX INC.

USA (Texas)

Mr. Jay Cooley, Regional Sales Manager

16203 Park Row, Suite 150

Houston, Texas 77084

USA

Phone: +1 (832) 321 5229


Europe

Mr. Ian Buchanan, Regional Manager

6 Applecross Road

Glasgow G66 3TJ

United Kingdom

Phone: +44 (0) 141 578 0693


Far East

Mr. Deryk Walker, Regional Sales Manager

59 Fen Ji Hu, Danshui

Taipei County 25163

Taiwan (ROC)

Phone: +886 2 8626 2893

Mobile: +886 926 664 232


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SMC Open Path Combustible Gas Detector Quasar 900 Owner's Manual

Quasar 900

Open-Path Gas Detection System

User's and Maintenance Manual

1. Scope

2. Technical Description

3. Operation Mode

a. Gas Calibration

b. Zero Calibration

c. Address Setup

d. Heated Optic Operation

4. Technical Specifications

5. Installation Instructions

6. Operating Instructions

7. Maintenance Instructions

8. Troubleshooting

Appendices

A. Wiring Configurations

B. Accessories

Technical Support

Related manuals

Table of contents

SMC Open Path Combustible Gas Detector Quasar 900 Owner's Manual

Quasar 900

Open-Path Gas Detection System

User's and Maintenance Manual

1. Scope

2. Technical Description

3. Operation Mode

a. Gas Calibration

b. Zero Calibration

c. Address Setup

d. Heated Optic Operation

4. Technical Specifications

5. Installation Instructions

6. Operating Instructions

7. Maintenance Instructions

8. Troubleshooting

Appendices

A. Wiring Configurations

B. Accessories

Technical Support

Related manuals

Spectrex

SafEye 200 Series

Spectrex

SafEye Quasar 900

Crowcon

Open Path Gas Detectors

Spectrex

SafEye Quasar 950

Spectrex

SafEye Quasar 950

Table of contents