Endress+Hauser SS1000 Bedienungsanleitung

Products Solutions Services

BA02186C/66/EN/01.21

70193628

Valid as of version

HC12 v2.51

(Device firmware)

Operating Instruction

SS1000 TDLAS Gas Analyzer

Non-hazardous (certified) locations

General Purpose

Endress+Hauser i

TABLE OF CONTENTS

1: Introduction

Who Should Read This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

How to Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Standard Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

General Warnings and Cautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Equipment labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Instructional symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Conventions Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

About the Gas Analyzers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

How the Analyzers Work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Wavelength Modulation Spectroscopy (WMS) signal detection . . . . . . . . . 1-7

Getting to Know the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Lifting/carrying the analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

2: Safety

Potential Risks Affecting Personnel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Mitigating risks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Explosion hazard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

3: Installation

What Should be Included in the Shipping Box . . . . . . . . . . . . . . . . . . . . . . . 3-1

Inspecting the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Hardware and Tools for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Setting up the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Connecting the Gas Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Conditioning the Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Connecting Electrical Power to the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Connecting the Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Appendix A: Specifications

Spare Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

Appendix B: Maintenance and Troubleshooting

Removing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Gas Leaks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Contamination. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Mirror Cleaning or Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Excessive Sampling Gas Temperatures and Pressures . . . . . . . . . . . . . . . . . B-7

Membrane Separator Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Electrical Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Checking the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Instrument Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-13

Service repair order (SRO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-13

Renewity returns. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-13

Before contacting Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-13

Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-14

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-15

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-15

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-15

SS1000 TDLAS Analyzer BA02186C

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THIS PAGE INTENTIONALLY LEFT BLANK

Endress+Hauser 1–1

1 - INTRODUCTION

Endress+Hauser’s SS1000 product is a high-speed, diode-laser based

extractive analyzer designed for extremely reliable monitoring of very low

(trace) to standard concentrations of specific components in various

background gases. In order to ensure that the analyzer performs as specified,

it is important to closely review the installation and operation sections of this

manual.

To operate the analyzer through firmware programming, please consult the

Description of Device Parameters for instruction.

Who Should Read This Manual

This manual should be read and referenced by anyone installing, operating or

having direct contact with the analyzer.

How to Use This Manual

Take a moment to familiarize yourself with this manual by reading the Table

of Contents.

This manual has been written to address the most common options and

accessories. Images, tables and charts have been included to provide a visual

understanding of the analyzer and its functions. Special symbols are also used

to provide the user with key information regarding the system configuration

and/or operation. Pay close attention to this information.

Standard Documentation

All documentation is available on the Endress+Hauser’s website:

www.endress.com.

This document is an integral part of the complete document package, which

also includes:

Part

Number Document Type Description

TI01643C Technical Informa-

tion

Planning aid for your device.

The document contains all the

technical data on the analyzer.

GP01181C Description of Device

Parameters

Provides the user with an overview

of the HC12 v2.51 firmware func-

tionality.

SS1000 TDLAS Analyzer BA02186C

1–2 Endress+Hauser

General Warnings and Cautions

Instructional icons are provided in this manual and various safety labels are

adhered to the analyzer to alert the user of potential hazards, important

information and valuable tips. Following are the symbols and associated

warning and caution labels to observe when servicing the analyzer. Some of

these symbols are provided for instructional purposes only and are not labeled

on the system.

Equipment labels

Warning statement for hazardous voltage. Contact may cause

electric shock or burn. Turn off and lock out system before

servicing.

Failure to follow all directions may result in damage or

malfunction of the analyzer.

Maximum voltage and current specifications for the fuse closest

to label.

PROTECTIVE EARTH GROUND - Symbol indicates the

connection point of the ground wire from the main power source.

FUNCTIONAL EARTH GROUND - Symbol indicates grounding

points intended primarily for troubleshooting.

INVISIBLE LASER RADIATION - Avoid

exposure to beam. Class 3b Radiation Product.

Refer servicing to the manufacturer or qualified

personnel.

WARNING

CLASS 3B INVISIBLE LASER

RADIATION WHEN OPEN

AVOID EXPOSURE TO THE BEAM

BA02186C SS1000 TDLAS Analyzer

Endress+Hauser 1–3

Instructional symbols

Conventions Used in this Manual

In addition to the symbols and instructional information, this manual is created

with “hot links” to enable the user to quickly navigate between different

sections within the manual. These links include table, figure and section

references and are identified by a pointing finger cursor when rolling over

the text. Simply click on the link to navigate to the associated reference.

Removing label from measurement cell optical

head will void analyzer warranty.

General notes and important information concerning the

installation and operation of the analyzer.

Failure to follow all directions may result in fire.

INVISIBLE LASER RADIATION - Avoid exposure to beam.

Class 3b Radiation Product. Refer servicing to the manufacturer-

qualified personnel.

Failure to follow all directions may result in damage or

malfunction of the analyzer.

Maximum voltage and current specifications for fuses.

SS1000 TDLAS Analyzer BA02186C

1–4 Endress+Hauser

About the Gas Analyzers

The SS1000 includes tunable diode laser (TDL) operating in the near- to short-

wavelength infrared. Each compact sensor consists of a TDL light source,

sample cell and detector specifically configured to enable high sensitivity

measurement of a particular component within the presences of other gas

phase constituents in the stream. The sensor is controlled by microprocessor-

based electronics with embedded software that incorporates advanced

operational and data processing algorithms.

How the Analyzers Work

The SS1000 employs SpectraSensors’ tunable diode laser absorption

spectroscopy (TDLAS) to detect the presence of trace substances in process

gases. Absorption spectroscopy is a widely used technique for sensitive trace

species detection. Because the measurement is made in the volume of the gas,

the response is much faster, more accurate and significantly more reliable than

traditional surface-based sensors that are subject to surface contamination.

In its simplest form, a diode laser absorption spectrometer typically consists of

a sample cell with a mirror at one end, and a mirror or window at the opposite

end, through which the laser beam can pass. Refer to Figure 1-1. The laser

beam enters the cell and reflects off the mirror(s) making one or more trips

through the sample gas and eventually exiting the cell where the remaining

beam intensity is measured by a detector. With the SS1000, sample gas flows

continuously through the sample cell ensuring that the sample is always

representative of the flow in the main pipe.

BA02186C SS1000 TDLAS Analyzer

Endress+Hauser 1–5

Figure 1–1 Schematic of a typical laser diode absorption

spectrometer (0.8 m measurement cell)

Due to their inherent structure, the molecules in the sample gas each have

characteristic natural frequencies (or resonances). When the output of the

laser is tuned to one of those natural frequencies, the molecules with that

particular resonance will absorb energy from the incident beam. That is, as the

beam of incident intensity, I0(), passes through the sample, attenuation occurs

via absorption by the trace gas with absorption cross section (). According

to the Beer-Lambert absorption law, the intensity remaining, I(), as measured

by the detector at the end of the beam path of length / (cell length x number

of passes), is given by

, (1)

where N represents the species concentration. Thus, the ratio of the absorption

measured when the laser is tuned on-resonance versus off-resonance is

directly proportional to the number of molecules of that particular species in

the beam path, or

. (2)

1 TEC 5 Detector

2 Laser 6 Window

3 Inlet 7 Pressure sensor

4 Optical head 8 Outlet

9 Far mirror

I  I0 exp   lN– =

N1–

  l

-------------- I 

I0 

-------------

ln=

SS1000 TDLAS Analyzer BA02186C

1–6 Endress+Hauser

Figure 1–2 shows the typical raw data (in arbitrary units [a.u.]) from a laser

absorption spectrometer scan including the incident laser intensity, I0(), and

the transmitted intensity, I(), for a clean system and one with contaminated

mirrors (shown to illustrate the system’s relative intensity to mirror

contamination). The positive slope of raw data results from ramping the current

to tune the laser, which not only increases the wavelength with current, but

also causes the corresponding output power to increase. By normalizing the

signal by the incident intensity, any laser output fluctuations are canceled, and

a typical, yet more pronounced, absorption profile results. Refer to Figure 1–3.

Note that contamination of the mirrors results solely in lower overall signal.

However, by tuning the laser off-resonance as well as on-resonance and

normalizing the data, the technique self calibrates every scan resulting in

measurements that are unaffected by mirror contamination.

Figure 1–2 Typical raw signal from a laser diode absorption

spectrometer with and without mirror contamination

1 Incident energy, I0()4 Signal (a.u.)

2 Raw signal, I()5 Wavelength (a.u.)

3 Raw signal, I() (contaminated mirrors)

3.0

2.5

2.0

1.5

1.0

0.5

0.0

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