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Scion Instruments 456-GC Reference Manual
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Scion Instruments 456-GC Reference Manual

Greenhouse gases analyzer
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See also: Service Manual , Reference Manual
Greenhouse Gases
Revised March 2019
© 2015 Scion Instruments
Reference Manual
Analyzer
SCION Instruments HQ
Suite 34, Livingston Business Centre,
Kirkton Road South, Livingston,
EH54 7FA, Scotland, UK.
Tel: +44 1506 300 200
sales-eu@scioninstruments.com
www.scioninstruments.com
SCION Instruments NL BV
4462, Goes,
Stanleyweg 4.
The Netherlands
Tel: +31 113 348 926
sales-eu@scioninstruments.com
www.scioninstruments.com

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Summary of Contents for Scion Instruments 456-GC

  • Page 1 Reference Manual Greenhouse Gases Analyzer SCION Instruments HQ SCION Instruments NL BV Suite 34, Livingston Business Centre, 4462, Goes, Kirkton Road South, Livingston, Stanleyweg 4. EH54 7FA, Scotland, UK. The Netherlands Tel: +44 1506 300 200 Tel: +31 113 348 926 Revised March 2019 sales-eu@scioninstruments.com...

  • Page 2: Table Of Contents

    Scion Instruments SECTION CONTENTS INTRODUCTION ..........................3 INSTRUMENT SPECIFICATIONS ....................4 INSTALLATION OF COLUMNS, FLOW AND PRESSURE SETTINGS ........5 TUNING OF THE ECD CHANNEL ....................6 TUNING OF THE TCD/FID CHANNEL.................... 7 OPERATION ............................9 TROUBLE SHOOTING........................11 SYSTEM OVERVIEW ........................

  • Page 3: Introduction

    Scion Instruments INTRODUCTION The Greenhouse Analyzer is an analytical tool principally developed for the analysis of the greenhouse gasses CO , CH and N O in Air. The sample is simultaneously injected onto an ECD and a TCD/FID channel. The N O is analyzed on the ECD.

  • Page 4: Instrument Specifications

    Scion Instruments INSTRUMENT SPECIFICATIONS Every instrument is fully tested; the results of the tests, as well as the methods used during these tests, are presented as part of this manual (refer to section 1). The Greenhouse Analyzer is equipped with Electronic Flow controls (EFC) and a manual pressure regulator.

  • Page 5: Installation Of Columns, Flow And Pressure Settings

    Scion Instruments INSTALLATION OF COLUMNS, FLOW AND PRESSURE SETTINGS Tuning of the analyzer is only necessary in case new columns are installed or after flow or pressure settings have been changed Make sure, the instrument is connected to the minimum gas supply pressures as indicated in the pre-installation requirements (section 2 of this manual).

  • Page 6: Tuning Of The Ecd Channel

    Scion Instruments TUNING OF THE ECD CHANNEL Set the temperature of the column oven at 50ºC. • Turn off the make-up gas to the ECD. • • Switch V2 to the inject position and set the rear EFC-24 to give a flow of 20 ml/min, measured at the outlet of the ECD.

  • Page 7: Tuning Of The Tcd/Fid Channel

    Scion Instruments TUNING OF THE TCD/FID CHANNEL • Use Helium as carrier and Nitrogen as make-up gas. • Turn of all FID flows. Switch V1 to the inject position and set the front EFC- 24 to give a flow of 20 ml/min, measured at the outlet of the FID.
  • Page 8 Figure 3: Example chromatogram for the FID channel of the Greenhouse analyzer The system is now ready for conditioning Run the method continuously overnight to condition all columns. Refer to the 456-GC user manual for operating the Automation. Scion Instruments Greenhouse Gases Analyzer Reference Manual...

  • Page 9: Operation

    Scion Instruments OPERATION An operational method is preloaded in the instrument. Listed below is an example method; settings determining the application may be different. Valve Oven: Temperature: 50°C Sample delivery: V1 (IBV) V2 (IBV) V3 (EA) Initial 0.01 1.00 2.10 2.20...
  • Page 10 Scion Instruments Front detector (TCD): Temperature: 200 ºC Time constant: slow Filament temp.: 280 ºC Range: 0.05 Polarity: negative Autozero: DEFC-14 Reference flow: 20 ml/min Make-up flow: 20 ml/min (sample line purge) Middle detector (FID): Temperature: 300 ºC Time constant:...

  • Page 11: Trouble Shooting

    TROUBLE SHOOTING. For problems related to the basic hardware and electronics of the gas chromatograph, as well as injectors and detectors, refer to the 456-GC user manual. In case of any analytical problem, it is always advised to record an analysis using a reference sample.

  • Page 12: System Overview

    Scion Instruments System Overview Scion Instruments Greenhouse Gases Analyzer Reference Manual Page: 12...