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USER MANUAL
OLCT 20
GAS DETECTOR
NPO20GB-Revision H.0

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Summary of Contents for Teledyne Everywhereyoulook OLCT 20

  • Page 1 USER MANUAL OLCT 20 GAS DETECTOR NPO20GB-Revision H.0...
  • Page 2 User Manuals in other languages are available on Website https://teledynegasandflamedetection.com Copyright  February 2024 by TELEDYNE OLDHAM SIMTRONICS S.A.S. All rights reserved. No reproduction of all or part of this document, in any form, is permitted without the written consent of TELEDYNE OLDHAM SIMTRONICS S.A.S.
  • Page 3: Table Of Contents

    OLCT 20 GAS DETECTOR USER MANUAL Table of Contents Overview ................... 1 Limitation of Liability ..................1 Ownership clauses .................... 1 Warnings........................ 2 Warranty ........................ 2 Important Information ..................2 Destruction of equipment ................3 Symbols used ....................... 3 Description ..................5 Overview .......................
  • Page 4 OLCT 20 GAS DETECTOR USER MANUAL Flameproof approved replacement sensors ......... 15 Intrinsically-safe approved replacement sensors ......... 16 Accessories ..................17 Technical Specifications ............... 19 Common ....................... 19 OLC 20d ........................ 19 OLCT 20d ....................... 19 OLCT 20i ......................... 19 Sensors ........................
  • Page 5: Overview

    It is important that you read this entire manual carefully and thoroughly. Limitation of Liability • TELEDYNE OLDHAM SIMTRONICS 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.
  • Page 6: Warnings

    GAS DETECTOR USER MANUAL Warnings • This is not a contractual document. TELEDYNE OLDHAM SIMTRONICS reserves the right to alter the technical features of its equipment at any time and for any reason without prior notice. • READ THESE INSTRUCTIONS CAREFULLY BEFORE USING FOR THE FIRST TIME: these instructions should be read by all persons who have or will have responsibility for the use, maintenance, or repair of the instrument.
  • Page 7: Destruction Of Equipment

    OLCT 20 GAS DETECTOR USER MANUAL Destruction of equipment European Union only. This symbol indicates that, in conformity with directive DEEE (2002/96/CE) and in accordance with local regulations, this product must not be discarded with household waste. It must be disposed of in a collection area that is designated for this purpose, for example at a site that is officially designated for 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.
  • Page 8 OLCT 20 GAS DETECTOR USER MANUAL NPO20GB Revision H...
  • Page 9: Description

    OLCT 20 GAS DETECTOR USER MANUAL Description Overview OLC 20 gas detectors are catalytic type detectors intended for the detection of combustible gases. They are flameproof certified (OLC 20d). OLCT 20 gas detectors are 4-20 mA transmitters and are intended for the measurement of combustible and toxic gases and oxygen.
  • Page 10: Mechanical Installation Of The Various Versions

    OLCT 20 GAS DETECTOR USER MANUAL Mechanical installation of the various versions Please ensure you read the paragraph: Special Specifications for use in Potentially Explosive Atmospheres in Accordance with European Directive ATEX 2014/34/EU. Figure 1 : Dimensions Cable length OLC/OLCT 20 0.2 m OLCT20D NPO20GB...
  • Page 11: Wiring Arrangements

    Wiring Arrangements Please ensure you read the paragraph: Special Specifications for use in Explosive Atmospheres in Accordance with European Directive ATEX 2014/34/EU. 3-wire version (OLC 20d, OLCT 20d) Figure 2 TELEDYNE OLDHAM OLC or OLCT 20 Grounding Power supply Signal (I)
  • Page 12: 2-Wire Intrinsic Safety Version (Olct 20I)

    OLCT 20 GAS DETECTOR USER MANUAL 2-wire Intrinsic Safety version (OLCT 20i) Figure 4 TELEDYNE OLDHAM SIMTRONICS controller OLCT 20 Zener Barrier NPO20GB Revision H...
  • Page 13: Installation

    OLCT 20 GAS DETECTOR USER MANUAL Installation It is recommended that you read the relevant guides for installing, operating and maintaining flammable gas and oxygen detectors (EN 60079-29-2) and toxic detectors (EN 45544-4). Regulations and operating conditions • Installation must comply with current edition of EN 60079-14 for systems installed in explosive atmospheres and eventually with any local or national additional requirements that may apply in the country of installation.
  • Page 14: Mounting The Detector

    OLCT 20 GAS DETECTOR USER MANUAL Mounting the detector The detector must be installed with the detection sensor pointing downwards. For combustible gas detectors, tilting the device more than 45° past vertical can lead to imprecise readings. Despite its high degree of protection (IP66), it may be necessary to protect the detector against adverse weather conditions (rain, dust, direct sunlight, etc.) and from direct spraying with cleaning or maintenance products (causing soiling of the detection sensor).
  • Page 15: Maintenance

    Calibration frequency will depend on the results of these tests (moisture, temperature, dust, etc.); however, the device should be calibrated at least once per year. The site manager is responsible for implementing the safety procedures at the site. TELEDYNE OLDHAM SIMTRONICS is not responsible for implementing safety procedures.
  • Page 16: Detector Olc 20

    Set the measuring channel to the calibration position (alarm relays inhibited) Apply the calibration cup and perform the calibration in accordance with the procedure defined during the training course provided by TELEDYNE OLDHAM SIMTRONICS or by an TELEDYNE OLDHAM SIMTRONICS’s authorized person Proceed the zero and span Set the measuring channel back to the "normal"...
  • Page 17 OLCT 20 GAS DETECTOR USER MANUAL However, as gas detectors are safety equipment, it is recommended to bump test the complete transmitter after a sensor replacement. 5.3.1 Calibration After removing the sensor from the transmitter, perform the calibration by using the calibrating bench provided for that purpose (see CALIBRO’s user manual).
  • Page 18: Calibration Specifications

    USER MANUAL 5.3.2 Calibration specifications Calibration shall be performed outside classified areas and by using suitable equipment that is described during the training course provided by TELEDYNE OLDHAM SIMTRONICS or by a person authorized by TELEDYNE OLDHAM SIMTRONICS. item 1 •...
  • Page 19: Spare Parts

    OLCT 20 GAS DETECTOR USER MANUAL Spare Parts All replacement parts must be TELEDYNE OLDHAM SIMTRONICS-manufactured parts. The use of non-TELEDYNE OLDHAM SIMTRONICS parts could jeopardize the instrument's safety. Flameproof approved replacement sensors Part number Description 6 313 757 OLC 20d sensor cell, 0-100% LEL, VQ1 type...
  • Page 20: Intrinsically-Safe Approved Replacement Sensors

    OLCT 20 GAS DETECTOR USER MANUAL Part number Description 6 313 772 OLCT 20d sensor cell, methylene/methylene chloride 6 313 773 OLCT 20d sensor cell, R12 6 313 774 OLCT 20d sensor cell, R134a 6 313 775 OLCT 20d sensor cell, MOS xxx number from 001 to 099 coresponding to gas code Intrinsically-safe approved replacement sensors Part number...
  • Page 21: Accessories

    OLCT 20 GAS DETECTOR USER MANUAL Accessories Accessory Illustration Code Tool kit Tool kit for maintenance. 6147869 Gas injection Inject the calibration gas onto the 6331141 pipe measurement sensor. Plastic material. Impact on reading: measurement Risk of electrostatic similar to measurement in diffusion charges.
  • Page 22 OLCT 20 GAS DETECTOR USER MANUAL Accessory Illustration Code Remote gas Used to detect ambient gases while 6327911 injection head a calibration gas injection pipe is Plastic material. being used. Only for combustible Risk of electrostatic gases, charges. Wipe with a Impact on reading: none.
  • Page 23: Technical Specifications

    OLCT 20 GAS DETECTOR USER MANUAL Technical Specifications Common Ingress Protection IP66 Weight 800 g Dimensions 60 X 120 mm Source mode current 4-20 mA Max. current 25 mA Fault current <1 mA OLC 20d Power supply: voltage on detector terminals = 2.8 V max Power consumption: 3-wire version = 400 mA max Measurement signal:...
  • Page 24: Sensors

    OLCT 20 GAS DETECTOR USER MANUAL Sensors Combustible 0-100% 6/15 Catalytic -20 to +55 0-95 +/-1% LEL (from 0-70% LEL)  gases (CH4) Arsine 1.00 -20 to +40 20 - 90 +/- 0.05 30/120  Chlorine 10.0  -20 to +40 10 - 90 +/- 0.4 10/60 Chlorine...
  • Page 25 OLCT 20 GAS DETECTOR USER MANUAL Freon R408a 1000 -20 to +55 20 - 95 +/- 15% (from 20-70% PE) 25/90  Ethanol -20 to +55 20 - 95 +/- 15% (from 20-70% PE) 25/60  Toluene  -20 to +55 20 - 95 +/- 15% (from 20-70% PE) 25/60 Isopropanol...
  • Page 26: Cross Gas Factors For Combustible Gases

    OLCT 20 GAS DETECTOR USER MANUAL Cross gas factors for combustible gases It is recommended that the detector is calibrated using the gas to be measured. Users wishing to calibrate the detector using a gas other that detected and factory-programmed should refer to the following table, and use the recommended gas and corresponding coefficient.
  • Page 27 OLCT 20 GAS DETECTOR USER MANUAL 8.6.2 Poison resistant catalytic sensor, type VQ1 Chemical Flash Vapor Coefficient- Coefficient- Coefficient - Coefficient - Formula point density Calibration gas Calibration gas Calibration gas Calibration (°C) CH4 (methane) C4H10 (Hydrogen) (Butane) C5H12 (Pentane) Ethyl acetate C4H8O2 2.10 11.50...
  • Page 28 OLCT 20 GAS DETECTOR USER MANUAL Chemical Flash Vapor Coefficient- Coefficient- Coefficient - Coefficient - Formula point density Calibration gas Calibration gas Calibration gas Calibration (°C) CH4 (methane) C4H10 (Hydrogen) (Butane) C5H12 (Pentane) Methacrylate Methane 5.00 15.00 -188 0.55 1.00 Methanol CH3OH 5.50 44.00...
  • Page 29: Special Instructions For Use In Explosive Atmospheres And Fonctional Safety

    OLCT 20 GAS DETECTOR USER MANUAL Special instructions for use in explosive atmospheres and fonctional safety General comments OLCT 20 gas detectors comply with the requirements of ATEX 2014/34/UE European Directive relating to explosive Dust and Gas atmospheres. The information given in the following sections should be respected and taken into account by the manager of the site where the equipment is installed.
  • Page 30: Threaded Joints

    USER MANUAL Threaded joints Threaded joints have different values than those specified in EN60079-1 standard. TELEDYNE OLDHAM SIMTRONICS does not allow the repair of the threaded joints and shall not be held responsible for any damage to the equipment or for any physical injury or death resulting from any product modification.
  • Page 31: Installation And Calibration

    The curve below gives the transmitter output current as a function of gas concentration. In the event that the user connects the transmitter to a non- TELEDYNE OLDHAM SIMTRONICS central controller, the user must ensure that the transfer curve is compatible with the equipment's input characteristics to correctly interpret the data coming in from the transmitter.
  • Page 32 OLCT 20 GAS DETECTOR USER MANUAL OLC 20d detector TELEDYNE OLDHAM SIMTRONICS SAS 62027, ARRAS France OLC20d CE0080 INERIS 01ATEX0004X II 2 GD Ex db IIC T6 Gb Ex tb IIIC T85°C Db T.Amb : -20°C to 70°C WARNING: Do not open when energized. Read user manual (cable entry).
  • Page 33 OLCT 20 GAS DETECTOR USER MANUAL OLCT 20i detector TELEDYNE OLDHAM SIMTRONICS SAS 62027, ARRAS France OLCT20i CE0080 INERIS 01ATEX0004X II 1 GD Ex ia IIC T4 Ga Ex ia IIIC T135°C Da T.Amb : -20°C to 70°C NPO20GB Revision H...
  • Page 34 OLCT 20 GAS DETECTOR USER MANUAL NPO20GB Revision H...
  • Page 35 OLCT 20 GAS DETECTOR USER MANUAL NPO20GB Revision H...
  • Page 36 Z.I. Est – CS 20417 Ruiping Road, Xuhui District TX 77429, 62027 ARRAS Cedex, SHANGHAI FRANCE CHINA Tel.: +1-713-559-9200 Tel.: +33 (0)3 21 60 80 80 TGFD_APAC@Teledyne.com www.teledynegasandflamedetection.com © 2024 TELEDYNE OLDHAM SIMTRONICS. All right reserved. NPO20GB Revision H.0 / February 2024...

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Everywhereyoulook olc 20Everywhereyoulook olct 20d

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