Related Manuals for Oldham OLCT IR
Summary of Contents for Oldham OLCT IR
- Page 1 OLCT IR TECHNICAL MANUAL INFRARED DETECTOR FOR FLAMMABLE GASES OR Part Number : NPOIRGB Revision : G.0 The Fixed Gas Detection Experts...
- Page 2 Copyright April 2016 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 OLDHAM, even if said company, individual or legal entity is directly involved in the sale of OLDHAM products. * In no event will OLDHAM be liable for any direct or indirect damage including those resulting from the sale and the use of its products IF THOSE PRODUCTS WERE NOT SPECIFIED AND SELECTED BY OLDHAM FOR SUCH USE.
- Page 4 The user therefore has an obligation to separate the OLCT IR from other waste to ensure that it is recycled safely for the environment.For further details on existing collection sites, contact the local administration or seller of the product.
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Page 5: Table Of Contents
Figure 3 ..................................2 Figure 4 ..................................3 Figure 5 ..................................4 INTRODUCTION ............................6 TECHNICAL SPECIFICATIONS ........................8 OLCT IR (CH HC) ................9 NTERFERENCE OF COMMON GASES ON INSTALLATION ............................12 START UP ..............................12 MAINTENANCE ............................14 .......................... - Page 6 User Manuel...
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Page 8: Figure 1
Ground screw Fastening lug Figure 1 OLCT IR OLCT IR with weather protection Avec coiffe anti- projection Cable gland, M20x1.5, optional (See Special instructions for use in ATEX explosive atmospheres) User Manual... -
Page 9: Figure 2
O-RING DIA. DIAM=65x3 6136242 LOCKING NUT M5 6903376 TERMINAL COVER 6123723 Ex TERMINAL 6152989 O-RING DIA DIAM=69x2 6135036 LED PCB 6451495 OPTION CABLE GLAND, M20, ARMOURED CABLE OR 6343489 CABLE GLAND, M20, NON-ARMOURED CABLE 6343493 Figure 2 OLCT IR Exploded view... -
Page 10: Figure 3
Figure 3 OLCT IR Terminal block Magnetic receiver Connection Iout Output signal in mA (terminal 1 of OLDHAM central units) Power supply 0 V (terminal 2 of OLDHAM +24VDC Iout central units) Power supply + (terminal 3 of OLDHAM +24VDC... -
Page 11: Figure 4
Ground screw Fastening lug Figure 4 OLCT IR GAS INLET AND OUTLET with by-pass adaptor (calibration cup) BY-PASS ADAPTOR Cable gland, M20 /M25... -
Page 12: Figure 5
Bracket (P/N 6322420) Figure 5 Ceiling mount for OLCT IR User Manual... -
Page 14: Introduction
The infrared technology used by the OLCT IR guarantees extreme detection accuracy. Powered with 24 Vdc, the OLCT IR provides a standard 4-20 mA analog output which is proportional to the measured concentration of gas. It features a non-intrusive calibration that enables calibration in hazardous area without declassifying the zone. - Page 15 The OLTC IR is available in various configurations: Methane Version (CH % LEL: optimized for methane detection, standard range is 0-100% LEL (0-5% vol.). The range can be adjusted to 0-4.4% vol. for those who consider this value as the lower explosive limit for methane. % Vol.: detection of methane from 0 to 100% vol.
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Page 16: Technical Specifications (1)
1 mA: detector fault 2 mA: calibration mode > 23 mA: out of range Wiring 3-wire shielded cable Load resistance (with OLDHAM controller) 8 Ohm in loop (250 meters with 1.5 mm² core size cable) Max. output load resistance 300 Ohm Cable entry M20 x1.5 (cable gland in option, See special instructions for use... -
Page 17: Interference Of Common Gases On Olct Ir (Ch And Hc)
Interference of common gases on OLCT IR (CH and HC) Any organic molecule with at least one C-H bond except for acetylene can potentially be detected by the OLCT IR, though the sensitivity varies. Note the following: Regardless the detector version, saturated hydrocarbons give a greater response than CH ... -
Page 18: User Manual
OLCT IR HC (propane calibration) OLCT IR HC calibrated to C3H8 : Interference of the main alkanes & alcohols OLCT IR HC calibré C : Interférence des principaux alcanes & alcools % LEL C3H8 % LEL C 100,0 90,0... - Page 19 2 – Technical specifications...
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Page 20: Installation
Look at figures 1 and 4 for the dimensions of the OLCT IR The OLCT IR detector is intended to be mounted on a vertical support structure, such as a wall. When it has to be mounted on a horizontal surface, use the ceiling mount (part number 6322420, see Fig. 5). - Page 21 4 – Start up...
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Page 22: Maintenance
Warning: Operations described in this paragraph are reserved for authorized and trained people otherwise the safety of the installation may be impaired. Do not open the OLCT IR housing since it contains an inert gas. If the detector has been opened, it shall be returned to factory for repair. - Page 23 Verification Required equipment gas calibration kit (calibration gas cylinder and its accessories) bump test cup (P/N 6313829) Procedure place the test cup over the weather protection and inject the calibration gas at a flow rate of 2 liters per minute.
- Page 24 I out: 2 mA adjustment (inject calgas LED: Moderate flash concentration as indicated on the OLCT IR housing) Note: Waiting time for the value to stabilise ~ 90 s Validation of sensitivity? NO = Exit from procedure with Slow sweep of the...
- Page 25 Index: Magnet Movement: Action of moving the magnet in front of the magnetic receptor located near the red LED (Fig. 3). Fast movement: < 1second. Slow movement: > 1second and until you exit the procedure exit (red LED off). ...
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Page 26: List Of Accessories
LIST OF ACCESSORIES Accessories Part No. By-pass adaptor / Calibration cup 6313863 Bump test cup 6313829 Service magnet 6155651 Sunshield (can also be used to prevent snow from 6313858 clogging the openings) Ceiling mount (bolts not included) 6322420 Weather protection (protective cover) 6313862 Thumbscrew (M5 D40) 6903376... - Page 27 7 – Special instructions for use in ATEX explosive atmospheres...
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Page 28: Special Instructions For Use In Atex Explosive Atmospheres And For Functional Safety
These detectors are classed as safety devices according to ATEX 94/9/CE 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 of ATEX Directive 94/9/CE... -
Page 29: Functional Safety
The detector OLCT IR was designed in conformity with IEC 61508 standard. The safety function of the OLCT IR is to detect combustible gases with infrared absorption technology and to deliver a 4-20mA current output proportionally to the gas concentration as a percentage of the LEL, respectively from 0 to 100% LEL. -
Page 30: Marking
Marking: OLCT IR Markings See the firm plate on the terminal block cover. The marking must include the following information: On the terminal block cover OLDHAM CE0080 OLCT IR - II 2GD Ex d e ia IIC T4 Gb Ex ia tb IIIC T135°C Db IP66... - Page 31 8 – Marking...
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Page 32: Manufacturer's Declaration Of Conformity
Manufacturer’s Declaration of Conformity User Manual... - Page 33 9 – Declaration of conformity...
- Page 34 User Manual...
- Page 36 The Fixed Gas Detection Experts EUROPEAN PLANT AND OFFICES Z.I.Est – rue Orfila CS 20417 – 62027 Arras Cedex FRANCE Tél: +33 (0)3 21 60 80 80 – Fax: +33 (0)3 21 60 80 00 Website: http://www. .com oldhamgas AMERICAS ASIA PACIFIC EUROPE Tel: +1 713-559-9280...