Simtronics GD1 MK3 Manuale utente
P/N: 850-816926-EN Rev6
Operating Manual
Simtronics GD1 MK3
Toxic Open Path Gas Detector
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Copyright June 2018 by Simtronics A.S.
All rights reserved. No reproduction of all or part of this document, in any form, is permitted
without the written consent of Simtronics A.S.
All of the information that is provided in this document is accurate to the best of our
knowledge.
As a result of continuous research and development, the specifications of this product may
be changed without prior notice.
Simtronics A.S.
Kabelgaten 8, Økern Næringspark
PO Box 314, Økern, NO-0511 Oslo, Norway
https://gasdetection.3M.com
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Thank you for choosing this SIMTRONICS instrument.
All of the necessary actions have been taken in order to ensure your complete satisfaction
with this equipment.
It is important that you read this entire manual carefully and thoroughly.
Limitation of Liability
The Company SIMTRONICS A.S., hereinafter referred to as “SIMTRONICS” throughout
this document, shall not be held responsible for any damage to the equipment or for
any physical injury or death resulting in whole or in part from the inappropriate use or
installation of the equipment, non-compliance with any and all instructions, warnings,
standards and/or regulations in force.
No business, person or legal entity may assume responsibility on behalf of
SIMTRONICS, even though they may be involved in the sale of SIMTRONICS products.
SIMTRONICS shall not be responsible for any direct or indirect damage, or any direct or
indirect consequence, resulting from the sale and use of any of its products UNLESS
SUCH PRODUCTS HAVE BEEN SELECTED BY SIMTRONICS ACCORDING TO THE
APPLICATION.
Ownership clauses
The drawings, specifications, and information herein contain confidential information
that is the property of SIMTRONICS.
This information shall not, either in whole or in part, by physical, electronic, or any
other means whatsoever, be reproduced, copied, divulged, translated, or used as the
basis for the manufacture or sale of SIMTRONICS equipment, or for any other reason
without the prior consent of SIMTRONICS.
Warning
This is not a contractual document. In the best interest of its customers and with the
aim of improving performance, SIMTRONICS reserves the right to alter the technical
features of its equipment without prior notice.
READ THESE INSTRUCTIONS CAREFULLY BEFORE THE FIRST USAGE: these instructions
should be read by all persons who have or will have responsibility for the use,
maintenance, or repair of the instrument.
This instrument shall only be deemed to be in conformance with the published
performance if used, maintained, and repaired in accordance with the instructions of
SIMTRONICS by SIMTRONICS personnel or by personnel authorized by SIMTRONICS.
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Important Information
The modification of the material and the use of parts of an unspecified origin shall
entail the cancellation of any form of warranty.
The use of the unit has been projected for the applications specified in the technical
characteristics. Exceeding the indicated values cannot in any case be authorized.
SIMTRONICS recommends regular testing of fixed gas detection installations (read
Chapter 6).
Warranty
The GD1 comes with a 5 year limited warranty on the product. The warranty covers
correct function inside specified tolerances. Warranty is void if the detector has been
installed or operated in conflict with specifications and procedures given in this
operating manual.
Destruction of the equipment
European Union (and EEA) only. This symbol indicates that, in conformity with
directive DEEE (2002/96/CE) and according to local regulations, this product may
not be discarded together with household waste.
It must be disposed of in a collection area that is set aside for this purpose, for
example at a site that is officially designated for the recycling of electrical and
electronic equipment (EEE) or a point of exchange for authorized products in the event of
the acquisition of a new product of the same type as before.
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TABLE OF CONTENTS
1. Introduction...................................................................................................................7
1.1. The system ........................................................................................................7
1.2. Definitions .........................................................................................................7
2. Installation .....................................................................................................................9
2.1. System parts......................................................................................................9
2.2. Positioning.......................................................................................................10
2.3. Mounting.........................................................................................................10
2.3.1. Mounting on pole.........................................................................................11
2.4. Sun shielding ...................................................................................................11
2.5. Electrical connection and wiring......................................................................12
2.5.1. Alternative wiring configurations .................................................................15
2.5.2. Cable types and specification .......................................................................16
2.5.3. Earth connection ..........................................................................................16
2.5.4. Performing loop test ....................................................................................17
3. Commissioning.............................................................................................................21
3.1. Preparation......................................................................................................21
3.2. Coarse alignment.............................................................................................21
3.3. Fine tuning.......................................................................................................23
3.3.1. Using a Web browser for tuning of signal strength......................................23
3.3.2. Using a HART® for tuning of signal strength.................................................30
3.4. Function test....................................................................................................35
3.4.1. Performing function test with CO2as a non-toxic alternative......................36
4. Operation.....................................................................................................................39
4.1. Analogue Output Protocol...............................................................................39
4.2. Test Cell filling and emptying instructions.......................................................40
5. Maintenance................................................................................................................41
5.1. Regular maintenance.......................................................................................41
5.2. Cleaning of optical surfaces.............................................................................41
6. Troubleshooting...........................................................................................................43
6.1. Error codes ......................................................................................................45
6.2. Tuning detector for less noise .........................................................................46
6.3. Interference from another GD1 ......................................................................48
6.4. Download the Diagnostics file .........................................................................48
6.5. Uploading a Configuration file.........................................................................49
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7. Certifications and standards ....................................................................................... 53
7.1. Certification .................................................................................................... 53
7.2. Marking........................................................................................................... 53
7.3. Specific condition for use in Explosive Atmosphere “X” ................................. 53
8. Accessories and spare parts ........................................................................................ 55
8.1. Ordering information for the GD1 .................................................................. 57
9. Technical Specifications .............................................................................................. 59
10. System description...................................................................................................... 61
10.1. System ............................................................................................................ 61
10.2. Application areas ............................................................................................ 62
10.3. Positioning considerations.............................................................................. 63
10.3.1. General positioning considerations regarding a gas cloud ..................... 63
10.4. Detection principles........................................................................................ 64
10.5. How to connect to the web interface with the Ethernet cable ...................... 65
10.6. Data logging functionality ............................................................................... 67
11. Support and contact details ........................................................................................ 71
11.1. Shipping instruction sending units to support ................................................ 71
EU Declaration of conformity............................................................................................... 75
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1. INTRODUCTION
1.1. The system
The GD1 is a laser-based open path Gas Detector with a separate transmitter (TX) and
receiver (RX). The TX emits infrared laser light detected by the RX. The detection principle
is based on measuring the absorption of light by the gas molecules along the optical line-
of-sight.
RECEIVER TRANSMITTER
1.2. Definitions
TX
Transmitter
RX
Receiver
Absolute
transmission
Strength of the optical signal
Relative
transmission
The relative strength of the optical signal in percentage relative to the
Absolute transmission when finishing alignment.
During commissioning, the GD1 is set up with optimum alignment and
signal strength. The relative transmission is used to keep track on how dirty
or out of alignment the system has become after the GD1 was
commissioned.
Laser light
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2. INSTALLATION
The area in which the detector may be installed must be in accordance
with the certification of the detector and in accordance with the
standards of the appropriate authority in the country of installation.
2.1. System parts
RECEIVER TRANSMITTER
The complete GD1 system consists of a TX sending a laser beam to the RX. Communication
to control room and power to the GD1 is connected to the TX. Between the TX and RX
there is a cable with communication and power.
The TX where the laser is located sends a diffused light beam (invisible) to the receiver. The
beam is shaped as a cone, not a focused laser beam as you might expect from a laser
pointer. The TX comes complete with the TX and junction box mounted on a backing plate.
The RX has a larger optical aperture to collect the transmitted light and add margin to path
alignment. The TX and RX communicate on a data link (cable). The RX comes complete with
the RX and junction box mounted on a backing plate.
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2.2. Positioning
Deciding on how the GD1 detectors should be placed at the site is discussed in section
10.3. During installation the detector should be positioned according to the following
points:
•Check that there is a free line of sight between the TX and RX.
•The measuring path should be horizontal.
•Avoid that the measuring path is blocked by temporary scaffolding, parked cars,
high traffic and moving structures.
•The detector should be attached to a mechanically rigid structure.
•The GD1 should be positioned as to avoid more than one TX transmitting into a RX.
Failing to do this can lead to interference between the detectors and false alarms.
•The transmitter and receiver units are to be fitted perpendicular to the measuring
path, within ± 20 degrees.
2.3. Mounting
The GD1 Transmitter and Receiver system assemblies are delivered on a 6mm (1/4")
universal mounting plate suitable for most mounting situations. See figure below for
general dimensions (mm).
The transmitter and receiver units are to be mounted perpendicular to the measuring path,
within ± 20 degrees.
397
210
185
9
372
Indice
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