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Oldham CTX 300 CO2 User Manual

Analogic co2 gas detector
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CTX 300 CO
User manual
2
Analogic CO
Gas Detector
2
Part Number: NP300CO2GB
Revision: B.0
07/2015→
The Fixed Gas Detection Experts

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Summary of Contents for Oldham CTX 300 CO2

  • Page 1 CTX 300 CO User manual Analogic CO Gas Detector Part Number: NP300CO2GB Revision: B.0 07/2015→ The Fixed Gas Detection Experts...
  • Page 2 April 2016 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 information provided in this document is accurate to the best of our knowledge.

  • Page 3: Table Of Contents

    Contents Chapter 1 | General Information ..........5 User Manual ....................5 Symbols used ..................... 5 Safety instructions ..................6 Important information ................. 6 Liability limits ....................7 Chapter 2 | Introduction ............9 General Information ................... 9 CTX300 CO versions ................
  • Page 4 Chapter 8 Technical specifications ........29 Chapter 9 | Annex ..............31 CTX 300 overview ..................31 CTX 300 User manual...

  • Page 5: Chapter 1 | General Information

    The aim of this manual is to supply simple and accurate information to the user. Oldham cannot be held liable for any misinterpretations in the reading of this manual. In spite of our efforts to produce an error-free manual, it may nonetheless contain some unintentional technical inaccuracies.

  • Page 6: Safety Instructions

    This symbol indicates: You must refer to the instructions. This symbol indicates: Warning! In the present mode of use, failure to adhere to the instructions preceded by this symbol can result in a risk of electric shock and/or death. European Union (and EEA) only. This symbol indicates that this product must not be discarded with household waste, as per the EEA directive (2002/96/EC) and your own national regulations.

  • Page 7: Liability Limits

    Liability limits Neither Oldham nor any other associated company under any circumstances can be held liable for any damage, including, without limitations, damages for loss or interruption of manufacture, loss of information, defect of the MX 43 control unit, injuries, loss of time, financial or material loss, or any direct or indirect consequence of loss occurring in the context of the use or impossibility of use of the product, even in the event that Oldham has been informed of such damage.
  • Page 8 CTX 300 User manual...

  • Page 9: Chapter 2 | Introduction

    Chapter 2 | Introduction General Information CTX300 CO gas detectors are designed to measure carbon dioxide. With robust materials, a specifically-adapted design, appropriate accessories, stainless bolts and a polyamide case (IP54), CTX 300 detectors are designed to withstand the roughest conditions. Figure 1: overview of a CTX 300 with display (left) and without display (right).

  • Page 10: Ctx300 Co Versions

    CTX300 CO versions In the case of a CTX 300 for the CO detection, this manual can only be used for devices delivered since July 2015. P/N : 6314124 P/N : 6514879 P/N : 6514880 P/N : 6514881 P/N : 6514882 Figure 2: CTX 300 CO detector Figure 3: CTX 300 CO...

  • Page 11: Chapter 3 | Installation And Connection

    Chapter 3 | Installation and connection Installing the detectors Layout While the measuring sensor is always located on the underside of the detector, several factors determine where the detector should be located: ■ If the gas being measured is lighter than the air, place the detector near the ceiling. ■...
  • Page 12 Mechanical installation Figure 4: overall dimensions of the CTX 300. Figure 5: drilling diagram for wall mounting (view of the side flatten onto the ceiling). CTX 300 User manual...

  • Page 13: Electrical Connections

    Stainless Screw CHC LI2 6902218 Stainless Electrical connections Wiring specifications If needed, consult the grounding instructions for Oldham instruments and related connection materials in Annex 1. Connections for the various types of sensors Wire CTX 300 CO CTX 300 CO...
  • Page 14 +24 VDC Control unit Detector Signal Figure 7: connection of a 3-wire sensor to an Oldham control unit. Connection of a 3-wire CTX300 sensor to a non-OLDHAM control unit with an internal power supply Other control unit +24 VDC Detector Signal Figure 8: Connection of a 3-wire CTX300 sensor to a non-OLDHAM control unit.
  • Page 15 Operating mode CTX300 with display ■ Remove the 4 screws (ref. 1). ■ Remove the cover (ref. 2). Figure 9 ■ Completely remove the screw (ref. 4). ■ Unscrew the screw a few turns (ref. 3). Figure 10 ■ Turn the display circuit as shown (ref.
  • Page 16 CTX 300 without display ■ Unscrew the 4 screws (ref. 1). ■ Remove the cover (rep. 2). ■ Proceed to wire the sensor according to the terminal location. Figure 12 CTX 300 User manual...

  • Page 17: Chapter 4 | Powering Up And Use

    Chapter 4 | Powering up and use Powering up ■ The sensor turns on when connected to a power supply. ■ If the sensor has a display, the green LED will be lit (ref. 2) and a value will appear on the display screen (ref. 1). Figure 13 4-20 mA analog output For CTX 300 sensors, the 4-20 mA output current is proportional to the gas level.

  • Page 18: Chapter 5 | Maintenance

    The adjustment operations in this paragraph are reserved for authorized, trained personnel because they may compromise detection reliability 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 19 30% of the measurement range at a minimum). The recommended rate is 60 l/h. Note: when dealing with dangerous gases, you MUST consult a specialized Oldham technician or use another sensor pack recently pre-calibrated at a factory.
  • Page 20 CTX 300 calibration case: CTX 300 with display ■ The sensor is operating: the green light (ref. 1) is lit and the display screen shows the measurement level. Figure 15 ■ Verify that the sensor is located in a clean-air environment. If not, inject synthetic air at a flow rate of 60 l/h.
  • Page 21 case: CTX 300 without display ■ The sensor is operating. ■ Verify that the sensor is located in a clean-air environment. calibration follow recommendations. ■ Connect a voltmeter to the AF+ and AF- terminals (caliber mV/DC). Figure 17 ■ Wait for the signal to stabilize and adjust the zero by using the ZERO potentiometer located on the sensor pack (Figure 18, ref.
  • Page 22 ■ Adjust the displayed value using the potentiometer (Figure 18, rep.1). Example sensor. Scale 0-5000 ppm. Standard gas concentration: 3000 ppm. Reading: 1360 mV. ■ Shut off the calibration gas injection. ■ Withdraw the gas injection pipe. ■ Then wait and check that the scale has returned to zero.

  • Page 23: 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: ■ Connect a voltmeter to the AF+ and terminals (caliber mV/DC) (Figure 19).

  • Page 24: Replacing A Sensor

    Replacing a sensor Sensors must be replaced: ■ When calibration is no longer possible (no sensitivity); ■ During preventative maintenance. The replacement sensor should be identical to the original sensor (same gas, same range). After a sensor has been replaced, a calibration or test (for pre-calibrated sensors) must be conducted.

  • Page 25: Chapter 6 | Spare Parts

    Chapter 6 | Spare parts List of spare parts for different detectors. Replacement parts must imperatively be guaranteed origin Oldham. Otherwise, material safety could be jeopardized. CTX 300 CO Description Picture 6147868 CTX 300 tool kit. 6322420 Mounting brace and bolts (CTX 300) ceiling mount.
  • Page 26 Description Picture 6327906 Device for remote gas introduction. 6335953 Replacement filter. PTFE protector filter. Pre-calibrated CO sensor pack 6314193 CTX 300 CO - 5000 ppm / 0.50% vol. sensor pack. – 5% vol. 6314191 CTX 300 CO sensor pack. – 100% vol. 6314192 CTX 300 CO sensor pack.

  • Page 27: Chapter 7 | Certification

    Chapter 7 | Certification The following page reproduces the EU declaration of conformity. 7 - Certification...
  • Page 28 CTX 300 User manual...
  • Page 29 Chapter 8 Technical specifications Polycarbonate housing. Enclosure. Detector-transmitter Function. Highly visible backlight display unit Display (optional, gas dependent) In operation: green color Indicator (on CTX 300 : 3-wire) lights Failure / maintenance: yellow color 2 wires, shielded LiYCY type – CTX 300 without display unit Link 3 wires, shielded LiYCY type –...
  • Page 30 0.50% -40°C to +50°C 0% to 95% RH +/-2% <20 5.00% -40°C to +50°C 0% to 95% RH +/-2% <20 100% -40°C to +50°C 0% to 95% RH +/-2% <20 IR : Infrared CTX 300 User manual...
  • Page 31 Chapter 9 | Annex CTX 300 overview Figure 22: CTX 300 with sensor pack and display – overview. 9 – Annex...
  • Page 32 Figure 23: CTX 300 – overview. CTX 300 User manual...
  • Page 33 9 – Annex...
  • Page 34 CTX 300 User manual...
  • Page 35 9 – Annex...
  • 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...

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