Oldham OLC 100 User Manual
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Oldham OLC 100 User Manual

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OLC/OLCT 100
USER MANUAL
Gas Detector
Part Number: NPO100GB
Revision: F.1
The Fixed Gas Detection Experts

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Summary of Contents for Oldham OLC 100

  • Page 1 OLC/OLCT 100 USER MANUAL Gas Detector Part Number: NPO100GB Revision: F.1 The Fixed Gas Detection Experts...
  • Page 2 Copyright  2013 by Oldham 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 Oldham S.A.S. All of the information that is provided in this document is accurate to the best of our knowledge.

  • Page 3: Table Of Contents

    Composition of the detector ............... 8 Internal elements ..................9 Identifiers ....................10 Chapter 2 | Ranges ............... 11 OLC 100 and OLCT 100 ranges .............. 11 Chapter 3 | Installation ............13 Regulations and conditions of use ............13 Necessary equipment ................13 Electrical power supply ................
  • Page 4 Chapter 7 | Accessories ............39 Cable gland ....................42 Chapter 8 | Spare parts ............43 Chapter 9 | Declarations of EC conformity ......45 Chapter 10 | Technical specifications........53 Dimensional characteristics ..............53 General Specifications ................54 Catalytic sensor (OLCT 100 XP) ..............
  • Page 5 The extent of our responsibility  OLDHAM 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, installation, or storage of the equipment, which is the result of not complying with the instructions and warnings, and/or with the standards and regulations in force.
  • Page 6 Warning  This is not a contractual document. In the best interest of its customers and with the aim of improving performance, OLDHAM 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.

  • Page 7: Chapter 1 | Presentation

     either conducted directly via a connecting cable to a dedicated central measurement unit (as with the OLC 100 explosimeter) that operates on the principle of the Wheatstone bridge. Such a measurement unit is available in the OLDHAM range.

  • Page 8: Composition Of The Detector

    Composition of the detector A detector comprises the following elements: Description Company label Cover PCB protector (for OLCT version). PCB. Cable gland inlet. Enclosure. Sensor block. Nozzle. Ground connection. LEL sensor (high temperature). Figure 1 : component parts of an OLCT 100 detector OLC(T) 100 User manual...

  • Page 9: Internal Elements

    Sensor block connector. Calibration ribbon connector. 4 mA adjustment. Push button access for 4 mA adjustment. Zeroing. Sensitivity adjustment. OLC 100 detector OLCT 100 explosimeter OLCT 100 detector for toxic gases Figure 2 : internal view of the detectors 1 - Presentation...

  • Page 10: Identifiers

    Description Manufacturer's name. Type of product ATEX- IECEx Marking 0-100% LIE CE symbol and the number of the organisation that provided the OLDHAM production quality certification (INERIS Warning.. Type of gas detected and range of Figure 3 : Firmplate measurement.

  • Page 11: Chapter 2 | Ranges

    Chapter 2 | Ranges OLC 100 and OLCT 100 ranges The OLC 100 range is reserved for the detection of explosive vapor by using a Wheatstone bridge sensor. The OLCT 100 range of detectors is provided with an amplifier producing a 2 or 3 wire 4-20 mA analog output.
  • Page 12 OLC(T) 100 User manual...

  • Page 13: Chapter 3 | Installation

    Chapter 3 | Installation It is recommended that the guides relating to the installation, use, and maintenance of flammable gas and oxygen detectors (standard EN/IEC 60079- 29-2) and toxic gas detectors (standard EN 45544-4) should be clearly understood. Installation shall be in accordance with the standards in force, classification of the zone, and in conformity with standards EN/IEC 60079-14 and EN/IEC 61241-14, the editions in force, or with other national and/or local standards.

  • Page 14: Electrical Power Supply

    10 to 32 23,5 OLCT 100 XP SC 15,5 to 32 1550 OLC 100 By Oldham controller (1) Depends on the central measurement unit. Location of the detector Depending on the density of the gas to be detected or the application, the detector shall be positioned at the ground level, or on the ceiling at the same height as the airflow, or near to the air extraction ducts.

  • Page 15: Connector Cable

    Installation of the enclosure shall be secured with 4 x M6 screws and the appropriate plugs for the supporting material Figure 6 : fixing template for the enclosure A special holder is available for mounting the detector on the ceiling (see section on accessories.

  • Page 16: Cable Connection

    Type of detector Type of sensor Maximum length (km) for Maximum cable of cross-section as load indicated resistance for 4-20 Ma 0,5 mm² 0,9 mm² 1,5 mm² Upstream line voltage (Vcc) OLCT 100 XP Catalytic or semiconductor Electrochemical OLCT 100 XP (1) <4 <4 <4...
  • Page 17 Cable preparation The cable shall be taken from the controller (measurement and automation) to the point of measurement (see Figure 8). The passage, support, and protection of the cable shall be according to best practice. Cable entry It is essential that the instructions provided by the manufacturer of the compression gland are followed and the braided screen is correctly connected.
  • Page 18 4 - Insert the part back into the OLCT100. Cable connection The connection of the cable between the detector and controller should be made with the power off. The site should be at equal potential Connect the cable to the detector side before connecting the controller side. After the wiring has been completed, connect the cable screen to the ground terminal of the controller.
  • Page 19 Figure 9: connections for an intrinsically safe, 2-wire 4-20 Ma detector with a Zener diode Figure 10: connections for a 3-wire 4-20 Ma detector Figure 11: connections for a 3-wire OLC 100 type detector 3 - Installation...
  • Page 20 Connecting the enclosure to ground Connect the enclosure ground terminal to earth according to the regulations. This ground connection may, however, be taken from the terminal on the screw fixing the PCB to the inside of the housing. Figure 12 : Ground connection terminal Closing the cover Before connecting the cable to the terminal on the controller, it is essential that the cover is completely closed.

  • Page 21: Chapter 4 | Calibration

    Chapter 4 | Calibration The tasks described in this chapter are reserved for authorised trained personnel only, since these tasks are liable to affect detection reliability This procedure describes:  zero adjustment;  Sensitivity adjustment. Necessary equipment  Multimeter (ranges 0-30 mA and 0-2 V), intrinsically safe if necessary. ...

  • Page 22: Stabilization Time

    Stabilization time After mounting, it is essential to allow the detector temperature to stabilize. In addition, after turning the power on, certain sensors require a further pre-heating time. Any adjustment before the time indicated will result in an incorrect measurement, which may in turn compromise the safety of the goods and personnel.

  • Page 23: Calibrating The Olc 100

    30 by using the recommended gas and corresponding coefficient. Zeroing Proceed as follows : Figure 13 : Zeroing (OLC 100) 1. Inhibit any alarm signals on the controller. 2. Place the calibration cup onto the detector head (Figure 13, "A").
  • Page 24 Adjustment of gas sensitivity This procedure takes place after the zeroing stage: 1. Inhibit any alarm signals on the controller. 2. Place the calibration cup on the detector head (Figure 13, "A"). 3. Connect the calibration cup to the calibration gas cylinder "D" by using a flexible hose "B".

  • Page 25: Calibrating The Olct 100

    Calibrating the OLCT 100 Wait for the stabilization time on power-up. For a LEL detector, it is recommended to calibrate with the targeted gas. Should the operator calibrate with another gas, please refer to tables on pages 32 to 34 to know the recommended calibration gas and the cross sensitivity factor.
  • Page 26 7. After the measurement has stabilized (approx. 2 minutes), read the value on the multimeter "B". A measurement of 0.4 V corresponds to 4 mA, i.e. 0% gas. Note: for the oxygen detector, inject pure nitrogen instead of air. 8. If a different value is displayed, adjust the "0" control ("C") in order to correct the value until 0.4 V is exactly displayed.
  • Page 27 Use the following formula to determine the voltage value that is to be displayed: Voltage displayed (mV) = 400 + (1600 x calibration gas concentration) Sensor range For example, for a range of 1000 ppm CO with a calibration gas cylinder of 300 ppm, the voltage displayed will be: Voltage displayed (mV) = 400 + (1600 x 300) = 880 mV 1000...
  • Page 28 Calibration coefficients of explosive gases for catalytic detectors When a VQ1 type sensor is used (available for OLC 100 and OLCT 100), the coefficients are as follows: Chemical Flash Vapor Coefficient Coefficient Coefficient Coefficient Calibration gas Calibration gas - Calibration gas...
  • Page 29 Chemical Flash Vapor Coefficient Coefficient Coefficient Coefficient Calibration gas Calibration gas - Calibration gas - Calibration gas Formula point (°C) density CH4 (methane) H2 (Hydrogen) C4H10 (Butane) C5H12 (Pentane) Kerosene C10 - C16 0,70% 5,00% > 50 °C > 4 5,00 4,00 2,65...
  • Page 30 When an anti-poison 4F type sensor is used (only available for OLCT 100), the coefficients are as follows: LEL % Chemical Vapor Formula density Coef Coef Coef Acetone 2,15 13,0 Acetylene Ammoniac 15,0 30,2 Benzene C6H6 2,10 1,05 n-Butane C4H10 Ethane C2H6 15,5...

  • Page 31: Chapter 5 | Preventive Maintenance

    Frequency of maintenance Gas detectors are safety devices. OLDHAM recommends the regular testing of fixed gas detection installations. This type of test consists of injecting the calibration gas into the detector at a sufficient concentration to activate the pre-set alarms.

  • Page 32: Actions

    Actions Periodic maintenance comprises the following actions:  Removal of dust from the sensor’s protective housing, using only a dry cloth. No water or solvents should be used. Severely dusty heads or sensors should be replaced immediately.  For use in dusty explosive atmospheres, the user should undertake full and regular cleaning to avoid the build-up of dust.

  • Page 33: Chapter 6 | Maintenance

    The 4 mA level is factory-set. This value cannot be changed or adjusted. This check does not concern explosimeter OLC 100. Opening the cover This stage is necessary for the 4 mA check, zeroing, and calibration of the detector.

  • Page 34: Checking The Current Generator

    Checking the current generator Although this setting is made in the factory, it is possible that the transmitter and controller may have to be matched. In this case, proceed as follows Figure 15: checking the current generator 1. Insert the blue and green plugs on the measurement lead into the + and – multimeter sockets, respectively.

  • Page 35: Possible Errors

    Possible errors The table below summarizes the various possible detector errors: OLC 100 explosimeter Observed fault Possible cause Action Zero setting not Sensor Replace the sensor possible Cable Check cable Main unit detector module Check module Sensitivity Sensor Replace the sensor...
  • Page 36 OLCT 100 Detector Observed fault Possible cause Action Line current 0 mA Connector cable Check cable Power supply Check voltage Replace the PCB Line current < 1mA Power the detector down then power it up (Off/On) Replace the sensor Sensor Replace the PCB Check cable Line resistance too high...

  • Page 37: Replacing Sensor Block

    Replacing sensor block Standard Version First follow the instructions in the section Opening the cover The sensor block encloses the actual detector sensor itself. A sensor block can only be associated with a defined detector. A guide pin ensures that the sensor block goes together correctly Figure 16: The sensor block (the black component) fits in the cover of...
  • Page 38 High temperature version Proceed as follows for the high temperature version.  Inhibit any alarm signals on the controller.  Switch off the supply to the detector.  Loosen the maintenance screw (Figure 17, "B") on the detector head cover and remove it.

  • Page 39: Chapter 7 | Accessories

    Chapter 7 | Accessories Accessory Utilization Illustration Reference Tools kit 6147879 Tool kit for OLCT 100 including calibration cup, Allen key, sensor removal key and connector cable humidifier kit Used for the calibration of the 6335918 semi-conductor transmitters Calibration Facilitates the injection of 6331141 calibration gas on the sensor Effect on measurement:...
  • Page 40 Accessory Utilization Illustration Reference PTFE water Protects the gas inlet from dust 6335975 barrier and splashing Effect on measurement: no effect, but cannot be used for detecting O , HCl, HF, or CL Effect on response time: response time increased (contact us for heavy gases of a density greater than 3 and at low concentrations <...
  • Page 41 Accessory Utilization Illustration Reference Replacement Enables replacement of an 6793718 adaptater kit existing detector without having to re-drill holes. Duct B301172 Mounting kit 7 - Accessories...

  • Page 42: Cable Gland

    Cable gland Purpose Reference M20 cable gland for non-armoured cable 6343493 Material: stainless steel M20 cable gland for non-armoured cable 6343499 Material: Nickel-plated brass (not recommended for use with ammonia or acetylene) M20 cable gland for armoured cable 6343489 Material: stainless steel M20 cable gland for armoured cable.

  • Page 43: Chapter 8 | Spare Parts

    List of spares for the various detectors Part Number Description 6 314 010 Catalytic sensor 0-100% LEL CFC100 VQ1 for OLC 100 6 313 994 Catalytic sensor 0-100% LEL CFC100 4F for OLCT 100 6 314 042 Infrared sensor 0-100% LEL CH4 for OLCT 100 6 314 102 Infrared sensor 0-100% LEL (4.4% vol) CH4 pour OLCT 100...
  • Page 44 OLCT 100 Semiconductor sensor for ethanol, toluene, isopropanol, 2- 6 314 039 butanone and xylene for OLCT 100 6 451 626 OLC 100 Board 6 451 646 OLCT 100 IR Board 6 451 621 OLCT 100 SC Board...

  • Page 45: Chapter 9 | Declarations Of Ec Conformity

    Chapter 9 | Declarations of EC conformity The document hereafter (2 pages) reproduces the EC declaration of conformity. 9 – Declarations of EC conformity...
  • Page 46 OLC(T) 100 User manual...
  • Page 47 9 – Declarations of EC conformity...
  • Page 48 The document below (1 page) reproduces the 96/98/EC Marine Directive declaration of conformity (followed by the certificate, 3 pages). OLC(T) 100 User manual...
  • Page 49 9 – Declarations of EC conformity...
  • Page 50 OLC(T) 100 User manual...
  • Page 51 9 – Declarations of EC conformity...
  • Page 52 OLC(T) 100 User manual...

  • Page 53: Chapter 10 | Technical Specifications

    Chapter 10 | Technical specifications Dimensional characteristics M44 pitch 1 M44 pitch 1 M44 pitch 1 Figure 18: dimensional characteristics of the detectors 10 – Technical specifications...

  • Page 54: General Specifications

    General Specifications  OLC 100: 340 mA (current supply) Supply voltage at the detector terminals:  OLCT 100 XP HT: 15.5 V to 32 V  OLCT 100 XP LEL: 15.5 V to 32 V  OLCT 100 XP IR: 13.5 V to 32 V ...

  • Page 55: Catalytic Sensor (Olct 100 Xp)

    -40 to +70°C (sensor with OLCT 100 : 2% of the measurement between 71 identifying mark) and 100% LEL OLC 100 : 5% of the measurement between 71 and 100 % LEL 1% LEL between 0-70%LEL -20 to +200°C VQ1 sensor, high...
  • Page 56 Mark on sensor VQ1 4F poison resistant sensor Figure 19: mark on VQ1 sensor Toxic sensors (OLCT 100 XP and OLCT 100 IS) Common characteristics Measurement principle: Electrochemical sensor Pressure: Atmospheric ± 10% OLC(T) 100 User manual...
  • Page 57 Type of gas Measurement Temperature % RH Accuracy Lyfe Reponse Storage Warm- range Version Version range °C (ppm) (months) time conditions up time max (h) (ppm)  Arsine 1,00 -20 à +40 20 - 90 +/- 0,05 30/120  Formaldéhyde 50,0 -20 à...
  • Page 58   Ammoniac -20 à +40 15 - 90 +/- 5 50/90   1000 +/- 20 50/90   5000 50/120 +/-150 ou   Monoxyde d’Azote 11 - 90 -20 à 50 +/- 2 10/30 (gamme   100) ...

  • Page 59: Semiconductor Sensors (Olct 100 Xp)

    Semiconductor sensors (OLCT 100 XP) Common characteristics Measurement principle: semiconductor Temperature range: -20°C to +55°C Relative humidity: 20 to 95% RH (non-condensing relative humidity) Pressure: atmospheric ± 10% Lifetime (typical): 40 months -20 to 50 ℃, 20 to 60% RH, 1 bar ± 10%, 6 months Storage conditions: maximum Warm-up time (max):...

  • Page 60: Infrared Sensors (Olct 100 Xp-Ir)

    Infrared sensors (OLCT 100 XP-IR) Measurement range: 0–100% LEL (explosive gases) 0-100% Vol CH4 0-5000ppm CO 0–5% CO (carbon dioxide) 0-10% CO 0-100% CO Measurement principle: Infra-red absorption Accuracy: - CO version: +/- 3% of full-scale at mid-scale (20°C) - LEL version: +/- 5% of full-scale at mid-scale (20°C) Temperature range: -40 to +55 °C (LEL and Vol CH4) -20 to +50 °C (CO...

  • Page 61: Chapter 11 | Specific Instructions For Use In Explosive Atmospheres And Operational Safety

    Chapter 11 | Specific instructions for use in explosive atmospheres and operational safety General comments OLC/OLCT 100 conforms to the requirements of European Directive ATEX 94/9/CE relating to explosive Dust and Gas atmospheres. On account of their metrological performance as tested by the accredited organization INERIS (in process), the OLC/OLCT 100 transmitter detectors intended for the measurement of explosive gases are classed as safety devices in the sense of the European Directive and may, therefore, contribute to limiting the risks of explosion.

  • Page 62: Cable Entries

    Directive and may, therefore, contribute to limiting the risks of explosion. For this to be so, they must be connected to Oldham type MX 15, MX 32, MX 42A, MX 48, MX 43, MX 52 or MX 62 detection controllers, or otherwise connected to measurement systems with 4-20 mA inputs conforming to section 1.5 of Annex II...

  • Page 63: Transfer Curve

    If the user connects the Fault transmitter to a controller other than the one provided by Oldham, they should be certain that the transfer curve is fully compatible with the input characteristics of their equipment to ensure the proper interpretation of the information provided by the transmitter.

  • Page 64: Functional Safety

    Functional safety The detector is certified by INERIS (in process) to be in conformity with the requirements of standard EN 50402 for SIL capability 1 and 2 for the CH and HC versions. Applicable since 2005, this standard is concerned with electrical apparatuses for the detection and measurement of oxygen or toxic or flammable gases or vapors, and defines the requirements relating to the safety function of fixed gas detection systems.

  • Page 65: Special Conditions Of Use

    Special conditions of use In case of exposure above the measuring range, it is mandatory to bump test the instrument with gas and/or to perform a calibration. In the event of a change of position, it is necessary to re-calibrate the detector.
  • Page 66 OLC(T) 100 User manual...

  • Page 67: Appendix | Ordering Information

    Appendix | Ordering information Gas List Please find below the list of gases that the OLC/OLCT 100 detector can detect. Gas Code Methane 0-100 % LEL Methane 0-100% LEL (4.4% vol) Hydrogen 0-100% LEL Butane 0-100% LEL Propane 0-100% LEL Ammoniac 0-100% LEL Ethyl Acetate 0-100% LEL Butyl Acetate 0-100% LEL...
  • Page 68 Gas Code Diesel 0-100% LEL Natural gas 0-100% LEL Heptane 0-100 % LEL Hexane 0-100% LEL Isobutane 0-100% LEL Isobutene 0-100% LEL Isopropanol 0-100% LEL Kerosene (JP4) 0-100% LEL Methyl Methacrylate 0-100% LEL Methanol 0-100% LEL Methylamine 0-100% LEL Naphta 0-100% LEL Naphtalene 0-100% LEL Nonane 0-100% LEL Octane 0-100% LEL...
  • Page 69 Gas Code , 0-10 ppm SO2, 0-30 ppm , 0-100 ppm , 0-10 ppm , 0-2,000 ppm HCl, 0-30 ppm HCl, 0-100 ppm HCN, 0-10 ppm HCN, 0-30 ppm , 0-100 ppm , 0-1,000 ppm , 0-5,000 ppm , 0-3 ppm , 0-5% , 0-10 % volume , 0-100 % volume...
  • Page 70 Gas Code Chloromethane (Methylchloride), 0-500 ppm R123, 0-2,000 ppm FX56, 0-2,000 ppm R143a, 0-2,000 ppm R404a, 0-2,000 ppm R507, 0-2,000 ppm R410a, 0-1,000 ppm R32, 0-1,000 ppm R227, 0-1% volume R407c, 0-1,000 ppm R408a, 0-4,000 ppm R407f, 0-1000ppm Ethanol, 0-500 ppm Toluene, 0- 500 ppm Isopropanol, 0-500 ppm 2-Butanone (MEK), 0-500 ppm...
  • Page 71 Appendix...
  • Page 72 The Fixed Gas Detection Experts EUROPEAN PLANT AND OFFICES Z.I. Est – rue Orfila CS 20417 – 62027 Arras Cedex FRANCE Tel: +33 (0)3 21 60 80 80 – Fax: +33 (0)3 21 60 80 00 Website: http://www. .com oldhamgas AMERICAS ASIA PACIFIC EUROPE...

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