Spectrasensors SS1000 Operator's Manual

SS1000

Gas Analyzers

Operator’s Manual

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SS1000 Operator’s Manual

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Products of

11027 Arrow Route

Rancho Cucamonga, CA 91730

Tel: [phone]

Fax: [phone]

www.spectrasensors.com

Copyright © 2010 SpectraSensors, Inc. No part of this manual may be reproduced in
whole or in part without the express written permission of SpectraSensors, Inc.
SpectraSensors reserves the right to change product design and specifications at any
time without prior notice.

SS1000

Gas Analyzers

Operator’s Manual

This manual applies to firmware version:

v2.41

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SS1000 Operator’s Manual i

TABLE OF CONTENTS

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i

List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v

List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

1: Introduction

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

How to Use This Manual. . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Special Symbols Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

SpectraSensors Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

About the Gas Analyzers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . 1-4

Ho

w the Analyzer Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2: Installation

What Should be Included in the Shipping Box . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Inspecting the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Hardware and Tools for Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . .

. . 2-1

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

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

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

To connect the sample supply line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

To connect the sample return . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . .

. 2-4

Conditioning the SCS Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

Connecting Electrical Power to the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Connecting the Output Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

3: Operating the Analyzer

Powering Up the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

To power up the analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . 3-1

Powering Down the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

To power down the analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Operating the Analyzer from the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Modes Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Mode 1: (Normal Mode) . . . . . . . . . . . . . . . . . . . .

. . . . . . . .

. . . . . . . . . . 3-4

Mode 2: (Set Parameter Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Mode 3: (Not Used) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Mode 4: (System Diagnostic Parameters) . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Mode 5: (Not Used) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Mode 6: (Diagnostic Data Downl

oad) . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . 3-5

Mode TEST: (System Test) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Changing Measurement and Control Parameters. . . . . . . . . . . . . . . . . . . . . . . . 3-6

To change parameters in Mode 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Measurement and Control Parameters Defined . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

S Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . 3-8

S

Factor Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

# Spectrum Average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Logger Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Peak Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Temperature Unit . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Pressure Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Concentration Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

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SS1000 Operator’s Manual

ii 49000-02079 rev. A 4-29-10

Pipeline Pressure (if applicable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Modbus Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Modbus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

User Analyzer ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

User Sample ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

User Component ID . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Adj

usting Analyzer Reading to Match Specific Standard(s) . . . . . . . . . . . . . . . . 3-12

To adjust the analyzer reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Changing Measurement Range (for dual-range moisture systems only) . . . . . . . 3-13

To change measurement range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . 3-15

Va

lidating the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

To validate the analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Calibrating the Analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

4: Serial Port Communications

Receiving Serial Data (RS-232 Output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

To launch HyperTerminal . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . 4-1

To capture and save data from the serial port . . . . . . . . . . . . . . . . . . . . . . . 4-4

To read diagnostic data with HyperTerminal . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Viewing Diagnostic Data with Microsoft Excel . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

To import the data file into Excel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Modbus Communications Protocol . . . . . . . . . .

. . . . . . . . . .

. . . . . . . . . . . . . 4-10

Framing/Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Reading/Writing in Daniel Modbus Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Reading/Writing in Gould Modb

us Mode . .

. . . . . . . . . . . . . . . . . . . . . . . . 4-13

To enable Modbus communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Modbus Accessible Parameter Definitions. . . . . . . . . . . . . . . . . . . . . . . 4-16

Appendix A: Troubleshooting

Gas Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Membrane Separator Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

To replace the membrane . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . A-1

C

ontamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

To keep the sampling lines clean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Cleaning the Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Tools and Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

To clean the mirrors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

Excessive Sampli

ng Gas Temperatures and Pressures . . . . . . . . . . . . . . . . . . . . A-5

Electrical Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

Peak Tracking Reset Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

To check the PkDf and PkD1 values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

To reset the Peak Tracking Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

Instrument Problems. . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Re

moving the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Checking the Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Service Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . A-8

War

ranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Appendix B: Specifications

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

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Table of Contents

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SS1000 Operator’s Manual v

LIST OF FIGURES

Figure 1–1: Schematic of a typical laser diode absorption spectrometer. 1-5
Figure 1–2: Typical raw signal from a laser diode absorption spectrometer with and

without mirror contamination. 1-6

Figure 1–3: Typical normalized absorption signal from a laser diode absorption

spectrometer. 1-6

Figure 1–4: Typical normalized 2

f signal where the species concentration is propor-

tional to the peak height. 1-7
Figure 3–1: SS1000 keypad. 3-3
Figure 4–1: Connection Description window. 4-2
Figure 4–2: Connect To windo

w. 4-2

Fi

gure 4–3: COM Properties window. 4-3
Figure 4–4: Hyperterminal window with streaming data. 4-3
Figure 4–5: Sample diagnostic data output. 4-6
Figure 4–6: Sample diagnostic data output (continued). 4-7
Figure 4–7: a) Opening a data file in Excel. b) Setting data type in Text Import

Wizard. 4-8

Figure 4–8: a) Setting Tab and Space as delimiters. b) Highlighting imported data

for plotting in Excel. 4-9
Figure 4–9: Chart Wizard - Step 1 window. 4-10
Figure 4–10: a) Data file plot in Excel. b) Format Data Series window. 4-11
Figure B–1: SS500/SS2000

analyzer externa

l features. B-3

Figure B–2: Fuse location on DC to DC converter. B-4

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SS1000 Operator’s Manual vii

LIST OF TABLES

Table 3–1: Measurement and control parameters. 3-7
Table 4–1: Modbus register map . 4-15
Table A–1: Fuse specifications (refer to Figure B–1 or Figure B–2). A-8
Table A–2: Potential instrument problems and solutions . A-10
Table B–1: SS1000 moisture in natural gas analyzer specifications. B-1
Table B–2: SS1000 carbon dioxide in natural gas analyzer specifications. B-2
Table B–3: Replacement parts for SS1000 SS1000 Operator’s Manual

analyzers. B-5

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SS1000 Operator’s Manual

01-92-4 A .ver 97020-00094iiiv

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SS1000 Operator’s Manual 1–1

1 - INTRODUCTION

SpectraSensors SS1000 products are high-speed, diode-laser based extractive
analyzers designed for extremely reliable monitoring of very low (trace) to
standard concentrations of H

2

O or CO2 in Natural Gas. In order to ensure that
the analyzer performs as specified, it is important to pay close attention to the
details of the installation and operation. This manual contains a comprehensive
overview of the SS1000 analyzer and step-by-step instructions on:

• Inspecting the Analyzer

• Setting up the Analyzer

• Powering Up the Analyzer

• Operating the Analyzer

• Serial Port Communications

• Powering Down the Analyzer

• Troubleshooting

Who Should Read This Manual

This manual should be read and referenced by anyone installing, operating, or
having contact with the analyzer.

How to Use This Manual

Take a moment to familiarize yourself with this Operator’s Manual by reading
the Table of Contents.

There are a number of options and accessories available for the SS1000
analyzers. This manual has been written to address the most common options
and accessories. Read each section in the

manual carefully so you can quickly

and easily install and operate the analyzer.
The manual includes images, tables, and charts that provide a visual

understanding of the analyzer and its functions. Special symbols are also used
to make you aware of potential hazards, important information, and valuable
tips. Pay close attention to this information.

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– 01-92-4 A .ver 97020-000942

Special Symbols Used in This Manual

This manual uses the following symbols to represent potential hazards, caution
alerts, and important information associated with the analyzer. Every symbol
has significant meaning that should be heeded.

General Warnings and Cautions

Following are general warnings and cautions to observe when servicing the
analyzer.

This icon denotes a warning statement. Warning statements
indicate a potentially hazardous situation which, if not avoided,
may result in serious injur

y or death.

Failure to follow all directions may result in fire.

Failure to follow all directions or substitution of components may
result in explosion.

Class IIIb radiation product. When open, avoid exposure to beam.

Failure to follow all directions may result in damage or
malfunction of the analyzer.

Important information concerning the installation and operation
of the analyzer.

Process samples may contain hazardous material in potentially
flammable

and/or toxic

concentrations. Personnel should have a
thorough knowledge and understanding of the physical properties
of the sampler and prescribed safety precautions before operating
the Sample Conditioning System.

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Introduction

101-92-4 A .ver 97020-00094

–3

Explosion hazard. Substitution of components may impair
suitability for Class I, Div. 2.

Explosion hazard. Do not connect or disconnect equipment unless
power has been switched off or the area is known to be non­hazardous.

Always disconnect the main power to the instrument before
attempting any repair.

Read and understand all instructions before attempting to operate
the instrument. Observe all caution notes and warning labels.

Class IIIb invisible laser radiation. When open, avoid expo

sure to

beam.

Conforms to provisions of US 21 CFR1040 10. Class I laser
product. Refer servicing to the manufacturer’s qualified
personnel.

Use a damp cloth to clean display and keypad to avoid static
electric discharge.

Do not exceed 10 psig (0.7 barg) in sample cell. Damage to cell
may result.

Do not hold or carry the analyzer by the measurement heads or
sample cells. Doing so may result in optical misalignment
affecting the performance of the sensor.

When selecting an

analyzer, the

total system design must be
considered to ensure safe, trouble-free performance. Function,
sizing, proper installation, operation, and maintenance are
beyond the control of SpectraSensors and are the responsibilities
of the system designer and user.

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SS1000 Operator’s Manual

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– 01-92-4 A .ver 97020-000944

SpectraSensors Overview

SpectraSensors, Inc. (SSI) is a leading manufacturer of state-of-the-art
electro-optic gas analyzers for the industrial process, gas distribution and
environmental monitoring markets. Headquartered in Houston, Texas, SSI was
incorporated in 1999 as a spin-off of the NASA/Caltech Jet Propulsion
Laboratory (JPL) with the purpose of commercializing space-proven
measurement technologies initially developed at JPL.

About the Gas Analyzers

The SS1000 is a tunable diode laser (TDL) absorption spectrometers operating
in the near- (IR-A, 0.75

–1.4 µm) to short-wavelength infrared (IR-B, 1.4–3

µm). Each compact sensor consists of a TDL light source, sample cell and
detector specifically configured to enable high sensitivity measurement of a
particular component in 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.

An appropriate

sample conditionin

g system may also be included with the
system that has been specifically designed to deliver an optimum sample
stream that is representative of the process stream at the time of sampling.
Most SS1000 analyzer systems are configured for use at extractive natural gas
sampling stations.

How the Analyzer Works

The SS1000 analyzer employs 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
detect

ion. 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 other
through which the laser beam can pass, as shown in Figure 1–1. The laser
beam enters the cell and reflects off the mirror(s) making one or more trips
through the sample ga

s and eventu

ally exiting the cell where the remaining
beam intensity is measured by a detector. With the SS1000 analyzers, sample
gas flows continuously through the sample cell ensuring that the sample is
always representative of the flow in the main pipe.

If equipment is used in a manner not specified by the
manufacturer, the protection provided by the manufacturer may
be impaired.

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Introduction

101-92-4 A .ver 97020-00094

–5

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, I

0

(λ), passes through the sample, attenuation occurs
via absorption by the trace gas with absorption cross section σ(λ). According
to the Beer-Lambert absorption law, the intensity

remaining, I(λ), as measured
by the detector at the end of the beam path of length l (cell length × 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(.

Figure 1–2 shows typical raw data from a laser absorption spectrometer scan
including the incident laser intensit

y, I

0

(λ), and the transmitted intensity, I(λ),
for a clean system and one with contaminated mirrors (shown to illustrate the
systems relative insensitivity to mirror contamination). The positive slope of
the 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 cancelled, and a typical, yet more
pro

nounced, abs

orption profile results, as shown in 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

L

D

DETECTOR

LASER

RORRIMRORRIM

I

0

(λ)

I(λ)

TRACE GAS ABSORPTION

α(λ)

GAS IN

GAS OUT

Figure 1–1 Schematic of a typical laser diode
absorption spectrometer.

I λ( ) I0λ( )exp σ λ( )lN–[ ]=

N

1–

σ λ( )l

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

I λ( )

I0λ( )

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

ln=

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Figure 1–2 Typical raw signal from a laser diode
absorption spectrometer with and without mirror
contamination.

Figure 1–3 Typical normalized absorption signal
from a laser diode absorption spectrometer.

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Introduction

101-92-4 A .ver 97020-00094

–7

data, the technique self calibrates every scan resulting in measurements that
are unaffected by mirror contamination.

SpectraSensors takes the fundamental absorption spectroscopy concept a step
further by using a sophisticated signal detection technique called wavelength
modulation spectroscopy (WMS). When employing WMS, the laser drive
current is modulated with a kHz sine wave as the laser is rapidly tuned. A lock­in amplifier is then used to detect the harmonic component of the signal that
is

at twice th

e modulation frequency (2f), as shown in Figure 1–4. This phase­sensitive detection enables the filtering of low-frequency noise caused by
turbulence in the sample gas, temperature and/or pressure fluctuations, low­frequency noise in the laser beam or thermal noise in the detector.

With the resulting low-noise signal and use of fast post-processing algorithms
combined with careful calibration to correct for secondary effects caused by
temperature and pressure variations and occasional spectral o

verlap with

ba

ckground species, reliable parts per million (ppm) or even parts per billion
(ppb) detection levels are possible (depending on target and background
species) at real-time response rates (on the order of 1 second).

All SpectraSensors TDL gas analyzers employ the same design and hardware
platform. Measuring different trace gases such as H

2

O, HCl, H2S, NH3, CO2, CO

and O

2

in various mixed hydrocarbon background streams, including natural
gas (alkanes), ethylene, propylene, refinery fuel gas, hydrogen reformer gas,
sy

ngas and others, is accomplished by simply choosing a different optimum
diode laser wavelength between 700 nm and 3000 nm which provides the least
amount of sensitivity to background stream variations. Use of ultra-high

Figure 1–4 Typical normalized 2f signal where the
species concentration is proportional to the peak
height.

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reliability optical telecommunications diode lasers (manufactured to stringent
Telcordia GR 468 specifications), 316L stainless steel, coated optical reflectors,
absence of any moving parts, tolerance to condensation of process liquids and
accumulation of particulates from gas streams eliminates requirements for
field calibration and frequent maintenance making SpectraSensors TDL
analyzers the most reliable gas analyzer platform with the lowest total cost of
ownership.

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SS1000 Operator’s Manual 2–1

2 - INSTALLATION

Installing the analyzer is relatively easy requiring only a few steps that, when
carefully followed, will ensure proper mounting and connection. Once the
analyzer arrives, you should take a few minutes to examine the contents before
installing the unit.

What Should be Included in the Shipping Box

The contents of the box should include:

• The SpectraSensors SS1000

• This Operator’s Manual with instructions on setting up and operating

the analyzer

• Carrying case

• Membrane separator filter (installed)

• 100–250 VAC, 50/60 Hz battery charger

• Quick-connect fittings for inlet and outlet tubes

• One external serial cable to connect the analyzer to a computer

• Additional accessories or options as ordered.

If any of these contents are missing, contact your sales representative.

Inspecting the Analyzer

Unpack and place the unit on a flat surface. Carefully inspect all enclosures for
dents, dings, or general damage. Inspect the inlet and outlet connections for
damage, such as bent tubing. Report any damage to the carrier.

Hardware and Tools for Installation

Depending on the particular model, the configuration of accessories and
options ordered, you may need the following hardware and tools to complete
the installation process.

Hardware:

• Heated pressure regulator (if inlet pressure is >10 psig or no probe

regulator exists)

Avoid jolting the instrument by dropping it or banging it against a
hard surface. Do not attempt to pick up the instrument using the
sample cell. Either action may disturb the optical alignment.

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• Stainless steel tubing or flexible stainless steel tubing

(SpectraSensors recommends using 1/4" O.D. x 0.035" wall
thickness, seamless stainless steel tubing).

Tools:

• 7/16" open-end wrench

• 9/16" open-end wrench.

Setting up the Analyzer

The SS1000 analyzer is manufactured for temporary installation at a sampling
point. Place the analyzer at a location relatively free of vibration and close to
the sampling point. Choose a shaded area or use an optional analyzer hood (or
equivalent) to minimize sun exposure. Refer to the

layout di

agrams in

Appendix B for detailed dimensions.

Connecting the Gas Lines

Once the analyzer has been suitably place, you are ready to connect the
sample supply and sample return lines. All work must be performed by
technicians qualified in pneumatic tubing.

When setting up the analyzer, be sure not to position the
instrument so that it is difficult to operate adjacent devices. Allow
3 feet of room in front of the analyzer and any switches.

It is critical to set up the analyzer so that the

inlet and outlet li

nes
reach the inlet and outlet connections on the chassis while still
maintaining flexibility so that the sample lines are not under
excessive stress.

In order to capture a representative sample of gas, the sample
must be captured from the pipeline using a probe equipped with
a standard or heated field-pressure reducing regulator. For more
information, refer to the American Petroleum Institute's “Manual
of Petroleum Measurement Standards,” Chapter 14, Se

ction 1 -

N

atural Gas Samples for Custody Transfer.

The sample supply port on the analyzer is equipped with a
membrane separator filter to prevent liquid from entering the
sample cell and accumulating on the internal optics.

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Installation

201-92-4 A .ver 97020-00094

–3

To connect the sample supply line:

1. The analyzer comes with a 1/8" quick-connect fitting for the sample
supply and a 1/4" quick-connect fitting for the sample return. Attach
these fittings to the analyzer.

2. Confirm that the sample probe is correctly installed at the supply tap
and that the sample probe isolation valve is closed.

3. Also, confirm that the field-pressure reducing station is installed
properly at the sample probe and that the pressure regulator at the
field-pressure reducing station is closed (adjustment knob turned
fully co

unter-clockwise).

4. Check that the relief valve vent line is properly installed from the
field-pressure reducing station to the low-pressure flare (or
atmospheric vent connection).

5. Determine appropriate tubing route from the field-pressure reducing
station to the analyzer.

6. Run stainless steel tubing from the field-pressure reducing station
(set for the specified inlet pressure) to the sample supply port of the
analyzer. Bend tubing using industrial grade benders, check tubing
fit to ensure proper seating

between the

tubing and fittings. Fully

ream all tubing ends. Blow out the lines for 10

–15 seconds with

clean, dry nitrogen or air prior to making the connection.

7. Connect the inlet tube to the analyzer using the 1/8" stainless steel
compression-type quick connect fitting provided.

8. Tighten all new compression fittings 1 1/4 turns with a wrench from
finger tight. For connections with previously swaged ferrules, thread
the nut to the previously pulled up position, then tighten slightly with
a wrench. Secure tubing to appropriate structural supports as
requir

ed.

9. Chec

k all connections for gas leaks. SpectraSensors recommends

using a liquid leak detector.

The sample at the sample tap may be at a high pressure. Use
extreme caution when operating the sample probe isolation valve
and field-pressure reducing regulator.

All valves, regulators, switches, etc. should be operated in
accordance with site lock-out/tag-out procedures.

Do not exceed 10 psig (0.7 barg) in sample cell. Damage to cell
may result.

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SS1000 Operator’s Manual

2

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10. While gas is flowing, briefly open the bypass valve on the membrane
separator filter to clear out any liquids that may have accumulated
during startup.

To connect the sample return:

1. Confirm that the low-pressure flare or atmospheric vent header
shut-off valve is closed.

2. Determine appropriate tubing route from the analyzer to the low­pressure flare or atmospheric vent header.

3. Run stainless steel tubing from the sample return port to the low­pressure flare or atmospheric vent header connection. Bend tubing
using industrial

grade benders, check tubing fit to ensure proper
seating between the tubing and fittings. Fully ream all tubing ends.
Blow out the lines for 10–15 seconds with clean, dry nitrogen or air
prior to making the connection.

4. Connect the sample return tube to the analyzer using the 1/4"
stainless steel compression-type quick connect fitting provided.

5. Tighten all new fittings 1 1/4 turns with a wrench from finger tight.
For connections with previously swaged ferrules, thread the nut to
the previously pulled up position, then tighten slightly wi

th a wrench.

Secure

tubing to appropriate structural supports as required.

6. Check all connections for gas leaks. SpectraSensors recommends
using a liquid leak detector.

Conditioning the SCS Tubing

Newly installed systems invariably have some trace contaminants and/or are
intended for measuring trace amounts of gas constituents that tend to cling to
system walls resulting in erroneous readings if the constituents are not in
equilibrium with the system walls. Therefore, once the analyzer is completely
connec

ted, the ent

ire system (i.e., from the sample source valve to the vent or
return) should be conditioned by flowing sample gas through the system for up
to 12 hours (or until reading stabilizes) after the system is powered up and
before actual readings are taken. Progress of the system conditioning can be
monitored via the gas concentration readings. Once the gas constituents have
reached equilibrium with the system walls, the readings should stabilize.

All valves, regulators, switches, etc. should be operated in
accordance with site

lock-out/tag-out procedures.

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Installation

201-92-4 A .ver 97020-00094

–5

Connecting Electrical Power to the Analyzer

The analyzer comes equipped with a fully charged internal battery. Battery life
is approximately 12 hours under normal operating conditions. A 100

–250 VAC,

50/60 Hz battery charger is supplied with the analyzer. To recharge the battery,
plug the charger cable into the jack on the back of the analyzer under the serial
port.

Connecting the Output Signals

The serial output is supplied from the serial port located on the back of the
analyzer below the on/off switch. The analyzer can be connected to a serial port
on a computer with the factory-s

upplied external serial cable. If the receiving
computer has only a USB port available, a USB-to-serial adapter can be used.
SpectraSensors recommends RadioShack

®

P/N 26-183.

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2– 01-92-4 A .ver 97020-000946

THIS PAGE INTENTIONALLY LEFT BLANK

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SS1000 Operator’s Manual 3–1

3 - OPERATING THE ANALYZER

Powering Up the Analyzer

After setting up the analyzer and connecting the gas lines, you are ready to
power up the analyzer.

To power up the analyzer:

1. Power up the analyzer by turning on the power switch on the back
of the analyzer.

2. The analyzer goes through an initialization period counting down
from 15 while showing the firmware version, release date and
measurement type [Dual Peak (DP) or Direct Measurement (DM)] on
the bottom line.

The laser housing labels on the flanges of the sample cell warn
about exposure to laser radia

tion inside. Never open the sample
cell unless directed to do so by a service representative and the
analyzer power is turned off.

The optical head has a seal and “WARNING” sticker to prevent
inadvertent tampering with the device. Do not attempt to
compromise the seal of the optical head assembly. Doing so will
result in loss of device sensitivity and inaccurate measurement
data. Repairs can then only be performed by the factory and

are

not

covered under warranty.

See Figure B–1 or Figure B–2 for locating fuses. If you need to
replace a fuse, use only the same type and rating of fuse as the
original, as listed in Table A–1.

Initializing...

15

v2.41 08-12-09 DM

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3. After initialization, the LCD displays the Normal Mode screen with
four lines (the third of which is blank for single-channel units).

4. Enable Peak Tracking following the procedure outlined in “To
change parameters in Mode 2” on page 3-6.

5. Continuous updates of the measurement parameters displaying on

the LCD indicate that the analyzer is operating normally.

6. Allow approximately three additional minutes for the analyzer to
stabilize before recording measurements.

Powering Down the Analyzer

It may be necessary to power down the analyzer for problem solving or
maintenance reasons.

To power down the analyzer:

1. Power down the analyzer by turning off the power switch on the back
of the analyzer.

2. If the analyzer is going to be shut down for a long period of time,
turn off sample flow to the analyzer by closing the sample probe
shut-off valve at the sample supply tap.

3. Allow pressure in the field-pressure reducing regulator to dissipate
until only a low residual pressure is indicated on the pressure gauge
at the field station.

4. C

lose the field-pressure reducing regulator (adjustment knob turned

fully counterclockwise).

Operating the Analyzer from the Keypad

The keypads enable the operator to modify measurement units, adjust
operational parameters, and perform diagnostics. During normal operation, the
LCDs continuously display the measured components’ concentrations, sample
cell temperatures, and sample cell pressures.

<NORMAL MODE>

H2O: 1.0256lb/mmscf

P: 954.4mb T: 76.1F

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Operating the Analyzer

301-92-4 A .ver 97020-00094

–3

The SpectraSensors keypad is shown in Figure 3–1. To activate any functions
on the keypad, press the mode key # followed by a number on the keypad to
specify a mode.

When you press the # key, the word MODE displays on the LCD. At this point,
the analyzer waits for you to press a second key.

The * key functions as the “enter” key. The analyzer saves the displayed
parameter value when you press this key. Always press * after entering a value
on the keypad (unless the entr

y was made in erro

r).

If you do make an error, press the # key followed by the 1 key to return to
Mode 1 without saving.

Modes Defined

Use the keypad to access the following modes by pressing the key # key first
followed by a number (1, 2, 4 or 6) to activate a mode. The following section
explains each mode and the corresponding information that displays on the
LCD.

You must press the # key before pressing a number or function
key to trigger a response from the keypad.

LCD Panel

Reserved for
Service Diagnostics

System
Diagnostics

Diagnostic Data Export
to Serial Port

Functions as

“ENTER” Key

Activates Keypad

Functions

Normal Display

Change Parameters

System Diagnostic

Parameters

#

MODE

E

TEST

ENTER

1

4

7

_

2

5

8

0

3

6

9

.

*

NORM

DIAG

PARAM

DIAG

PARAM

DATA

CH.A

CH.B

CH.A

CH.B

TRANS

Figure 3–1 SS1000 keypad.

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Mode 1: (Normal Mode)

Continuously displays updated measurements. Press the # key followed by the
1 key.

The measurements displayed are:

• H2O — Concentration in units selected in Mode 2.

• P — Pressure in the sample cell in units selected in Mode 2.

• T — Temperature in the sample cell in units selected in Mode 2.

Mode 2: (Set Parameter Mode)

Enables user to view and change measurement parameters. Follow the
procedure under “To change parameters in Mode 2” on page 3-6 for
viewing and changing any of the parameters.

Mode 3: (Not Used)
Mode 4: (System Di

agnostic Parameters)

Displays system diagnostic data for Channel A. These values may be useful
when troubleshooting the system. Press the # key followed by the 4 key.

The diagnostic parameters in Mode 4 displayed are:

• PP2F: Shows the value of the concentration signal in A/D counts. A

normal range is 0 to 8190 depending on the concentration.

+

# 1

<NORMAL MODE>

H2O: 1.0256lb/mmscf

P: 954.4mb T: 76.1F

+

# 4

PP2F:8190 PkDf:34.00
Powr:2538 PkD1:34.00
Indx: 301
Zero: -24

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–5

• Powr: Shows the laser power detected at the absorption peak in A/D

counts. Acceptable values are between 1000 and 2000. A number
below 1000 may indicate that either the optics need to be cleaned or
there is an alignment problem. A value below 200 will cause a Power
Fail.

• Indx: Shows the position of the absorption peak within the

wavelength scan. It should normally be at 290 with the peak tracking
turned on. Typically, values outside of the range of 241 to 339
indicate a Spectrum Fail condition.

• Zero: Shows the detector signal value when the laser is turned off.

It should be in the range of -50 to +50. Outside of this range, a Null
Fail displays.

• PkDf: The factory laser current set point in mA that matches the

target absorption line.

• PkD1: The laser current set point after adjustment by the peak-

tracking software. It should be within a few mA of the PkDf value. If
the analyzer is experiencing problems, one of the first
troubleshooting steps should be to check the peak tracking.
Tracking Fail may be displayed if PkD1 differs by more than 4 mA
from

PkDf. For more information on troubleshooting these issues,

see “Peak Tracking Reset Procedure” on page A-5.

Mode 5: (Not Used)
Mode 6: (Diagnostic Data Download)

Used to transfer diagnostic data to the serial port and read the individual data
points of both the DC and 2f spectra that the instrument analyzes to calculate
the gas concentration. Viewing these data can be helpful in diagnosing
problems with the analyzer. Press # key followed by the 6 key.

The data points, along with int

ermediate calculation results, are output to the

serial port(s) whenever Mode 6 is selected.

+

#

6

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Mode TEST: (System Test)

Provides basic diagnostic test results indicating that the laser power,
pressure/temperature sensors, and the infrared spectrum that the system
records for analysis are all nominal. Press the # key followed by the TEST key.

The LCD displays the system test data.

Changing Measurement and Control Parameters

In Mode 2, all of the pertinent measurement and control parameters can be
viewed and changed. Refer to Table 3–1 for a list of parameters and value
ranges.

To change parameters in Mode 2:

1. Press the # key followed by the 2 key. The LCD prompts for a

numeric password.

2. Enter the user password (3142) on the keypad, then press the * key
to enter the number.

3. Starting with the first parameter, enter a new value and/or press the
* key to store the value and cycle to the next parameter.

+

#

TEST

<SYSTEM TEST>
Laser Power: OK
PT Sen: OK Trak: OK
Spectr: OK Null: OK

<SET PARAMETER MODE>

Enter password

v2.41 08-12-09 DM

<SET PARAMETER MODE>

S Factor

1.00000
Enter a value

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Operating the Analyzer

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–7

4. When finished changing or viewing the measurement and control
parameters, press the # key followed by the 1 key to return to Mode
1 and normal operation.

Table 3–1 Measurement and control parameters.

Parameter Setting Function

teS resUrotcaF S

-99 – 99
Default = 1

Analyzer response adjustment
to match calibration standard in
the field.

S Factor Offset User Set

-999999 – 999999
Default = 0

Analyzer offset adjustment to
match calibration standard in
the field.

# Spectrum Average 1 – 240

Default = 4

Sets the number of scans aver­aged for each measurement

sgnidaer 003 – 1etaR reggoL

Default = 4

Sets the number of measure­ments to include in a running
average

ot ytilibapac gnikcart kaep steS2 ,1 ,0gnikcarT kaeP

off, on, or reset

DO

Alarm Setup Not applicable for SS1000
Alarm Setpoint Not applicable for SS1000
4-20 mA Alarm Action Not applicable for SS1000
4-20 mA % Test Not applicable for SS1000
4 mA Span Not applicable for SS1000
20 mA Span Not applicable for SS1000

-met rof tinu yalpsid eht steS1 ro 0tinU erutarepmeT

perature

-serp rof tinu yalpsid eht steS3 ro ,2 ,1 ,0tinU erusserP

sure

-noc rof tinu yalpsid eht steS1 ro 0tinU noitartnecnoC

centration

ot desu erusse

rp enilepip steS999999 – 0erusserP enilepiP

calcula

te dew point

Modbus Address User Set

0 – 250

Sets Modbus address for the
analyzer

teS resUedoM subdoM

0, 1, or 2

Sets type of Modbus protocol

teS resUDI rezylanA

0 – 2147483647

Customer definable value for
analyzer ID

teS resUDI elpmaS

0 – 2147483647

Customer definable value for
sample ID

teS resUDI tnenopmoC

0 – 2147483647

Customer definable value for
component (analyte) ID

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Measurement and Control Parameters Defined

S Factor

The S Factor parameter is a user definable value that enables adjustment
(without affecting the factory calibration) of the analyzer response (or slope)
in the field [see “Adjusting Analyzer Reading to Match Specific
Standard(s)” on page 3-12].

S Factor Offset

The S Factor Offset parameter is a user definable value that enables
adjustment (without affecting the factory calibration) of the analyzer offset in
the field [see “Adjusting Analyzer Reading t

o Match Specific

Standard(s)” on page 3-12].

# Spectrum Average

The # Spectrum Average parameter sets the number of scans that the
analyzer averages for when determining the concentration. Averaging over
multiple scans lowers noise in the measurement but inherently increases the
response time. Each scan adds about 0.25 seconds to the response time. For
example, if #Spectrum Average is set to “4,” an updated concentration value
will be calculated about once every second.

<SET PARAMETER MODE>

S Factor

1.00000
Enter a value

<SET PARAMETER MODE>

S Factor Oset

0.00000
Enter a value (%)

<SET PARAMETER MODE>
# Spectrum Average
16
Enter a value

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Operating the Analyzer

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–9

Logger Rate

For applications where an external data logger is employed, use the logging
rate to set the number of measurements to include in the running average. The
display and the current loop output will each have a value representing the
running average of the concentration over a number of measurements equal to
Logger Rate.

Peak Tracking

The peak tracking function is a software utility that continuously adjusts the
laser current to keep the absorption peak of the measured component at the
center of the scan. There are thre

e choices: 0 for no peak tracking, 1 for peak
tracking (default), or 2 to reset the peak tracking function. In most cases, the
peak tracking should be left on (i.e. Peak Tracking set to 1).

Temperature Unit

The Temperature Unit parameter designates the display units for the
measured cell temperature. There are two choices: 0 for degrees Celsius and
1 for Fahrenheit. The default value is the standard unit of measurement in the
region the analyzer is being used.

<SET PARAMETER MODE>
Logger Rate
4
Enter a value

<SET PARAMETER MODE>
Peak Tracking
1
0:O 1:Track 2:Reset

<SET PARAMETER MODE>
Temperature Unit
0
0:C 1:F

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SS1000 Operator’s Manual

3– 01-92-4 A .ver 97020-0009401

Pressure Unit

The Pressure Unit parameter designates the display units for the measured
absolute pressure in the cell. There are four choices: 0 for millibar, 1 for Torr,
2 for kPa, and 3 for psia.

Concentration Unit

The Concentration Unit parameter designates the display units for the
measured concentration. There are three choices: 0 for ppmv, 1 for lb/MMscf,
and 2 for dew point (calculated at the Pipeline Pressure set below and
displayed in the Temperature Unit set above). For percentage level
analyzers

, the choices are: 0

for ppmv and 1 for %.

Pipeline Pressure (if applicable)

On moisture systems, the Pipeline Pressure parameter sets the pressure for
the calculation of dew point. The value entered here will have the units
designated by the Pressure Unit parameter, which will be reflected by the
term in parentheses in the display.

<SET PARAMETER MODE>

Pressure Unit

0:mb1:Torr2:kPa3:psi

<SET PARAMETER MODE>

Concentration Unit
0
0:ppmv 1:lb 2:DP

<SET PARAMETER MODE>

Pipeline Pressure

0.00000
Enter a value (mb)

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–11

Modbus Address

The Modbus Address parameter sets the analyzer address for when the
analyzer is used as a Modbus device. Addresses from 1 to 250 can be used.

Modbus Mode

The Modbus Mode parameter sets the communications protocol for the RS232
port. There are three choices: 0 for turning the Modbus capabilities off and

defaulting to generic serial output as described in “Receiving Serial Data
(RS-232 Output)” on page 4-1; 1 for enabling the analyzer to respond to
Gould Modbus RTU function codes 3, 6 and 16; and 2 for enabling the analyzer
to respond

to Daniel Modbus R

TU function codes 3, 6 and 16.

User Analyzer ID

The User Analyzer ID parameter assigns a numeric identification to the data
enabling SCADA or DCS systems to associate data with a particular analyzer.

<SET PARAMETER MODE>
Modbus Address
1
Enter a value(1-250)

<SET PARAMETER MODE>
Modbus Mode
0
0:O 1:GMR 2:DMR

<SET PARAMETER MODE>
User Analyzer ID
0
Enter a value

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SS1000 Operator’s Manual

3– 01-92-4 A .ver 97020-0009421

User Sample ID

The User Sample ID parameter assigns a numeric identification to the data
enabling SCADA or DCS systems to associate the data with a particular sample
point.

User Component ID

The User Component ID parameter assigns a numeric identification to the
data enabling SCADA or DCS systems to associate the data with a particular
analyte.

Adjusting Analyzer Reading to Match Specific
Standard(s)

In some instances, the user may wish to adjust the analyzer reading to match
the concentration (or concentrations) of a spec

ific standard (or standards). The
S Factor and S Factor Offset parameters are used to adjust the analyzer
output in the field without affecting the factory calibration. Both parameters are
used when samples from two different concentration standards are available,
whereas only the S Factor Offset parameter is used when a sample from only
one concentration standard is available.

The value of the S Factor parameter,

S, is determined by

,

where

C

1

is the certified concentration of standard No. 1, C2 is the certified

concentration of standard No. 2,

A

1

is the measured concentration (analyzer

reading) of standard No. 1, and

A

2

is the measured concentration (analyzer

reading) of standard No. 2.
The S Factor Offset parameter,

O, is determined by

,

<SET PARAMETER MODE>
User Sample ID
0
Enter a value

<SET PARAMETER MODE>
User Component ID
0
Enter a value

S

C2C1–

A

2A1

–

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

=

O C1S A1( )–=

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Operating the Analyzer

301-92-4 A .ver 97020-00094

–13

where when a sample from only one concentration standard is available.

To adjust the analyzer reading:

1. Validate the analyzer using one or two concentration standards [see
“Validating the Analyzer” on page 3-15].

2. Calculate the S Factor and/or S Factor Offset parameter(s) using

the equations above.

3. Follow the procedure under “To change parameters in Mode 2”
on page 3-6 to enter the new values.

Confirm the new values by re-measuring the bottle(s) of test gas.

Changing Measurement Range (for dual-range
moisture systems onl

y)

The measurement range on moisture systems that have been specifically
calibrated for dual-range operation can be switched by changing a few key
parameters. Refer to the parameter specifications that come with the analyzer
calibration documents.

To change measurement range:

1. Follow the procedure under “To change parameters in Mode 2”
on page 3-6 to enter new parameter values.

2. Scroll through the parameters by pressing the * key until arriving at
the Peak Tracking parameter.

SpectraSensors recommends validating the analyzer using only
H

2

O & CO2 in CH4. Bottles of test gas with certified concentrations
of approximately 20% and 80% of full scale are recommended for
two point validation. For single point validation, a bottle with a
certified concentration of approximately 50% of full scale should
be used.

When procuring a gas standard, make sure the background gas is
that specified (H

2

O & CO2 in CH

4

) or a mix that closely resembles

the contents of the process stream and have the gas stan

dard
certified to better than the specified precision of the analyzer, if
possible.

S 1=

<SET PARAMETER MODE>
Peak Tracking
1
0:O 1:Track 2:Reset

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3. Press the 0 key followed by the * key to turn peak tracking off. Press
the # key followed by the 1 key to return to Mode 1.

4. Press the # key followed by the 2 key. The LCD prompts for a

numeric password.

5. Enter the user password (7758) on the keypad, then press the * key
to enter the number. This puts you into the factory mode.

6. Enter the Phase value (as provided with the calibration documents)
for the desired range followed by the * key.

7. Enter the Midpoint value (as provided with the calibration
document

s) for the desired range followed by the * key.

8. Repeat for Ramp Amplitude, Imod, RCalb, Zero Offset, Span,
PA1, PA2, PA3 and PA4.

9. Press the # key followed by the 1 key to return to Mode 1.

10. Follow the procedure under “To change parameters in Mode 2”

on page 3-6 to enter new parameter values.

When changing parameters in factory mode, be careful not to
change any parameters other than those specified for range
change or the calibration and/or operation of the analyzer may be
adver

sely affected.

<SET PARAMETER MODE>

Enter password

v2.40 08-12-08 DM

<SET PARAMETER MODE>
Phase
320
Enter a value

<SET PARAMETER MODE>
Midpoint

59.70000
Enter a value

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Operating the Analyzer

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–15

11. Scroll through the parameters by pressing the * key until arriving at
the Peak Tracking parameter.

12. Press the 1 key followed by the * key to turn peak tracking on. Press
the # key followed by the 1 key to return to Mode 1.

The analyzer should stabilize at the new settings within a few minutes.

Faults

Fault messages appear on the front panel LCD. System faults include one or
more of the following:

• Power Fail: this fault occurs when the DC signal becomes too weak

for a reliable measurement typically as a result of mirr

or

contamination.

• Null Fail: this fault occurs if the detector signal value is out of the

range of -50 to +50 when the laser is turned off.

• Spectrum Fail: this fault occurs when the system is unable to

adequately fit a curve to the measured signal typically as a result of
DC signal saturation in the absence of absorbing gas in the
measurement cell, too much noise in the signal or an unexpected gas
mixture in the measurement cell.

• P/T Fail: this fault occurs when the pressure and/or temperature in

the measurement cell exceeds the specified maximum operating
levels.

• Track Fail: this fault occurs when the peak tracking function is out

of range [PkDf (factory set midpoint) and PkD1 (peak track
midpoint) differ by more than 4 counts].

See Appendix A for recommendations and solutions to common problems
resulting in a system fault.

Validating the Analyzer

Validation of the analyzer can be achieved by measuring an appropriate gas
standard.

To validate the analyzer:

1. Connect a bottle of validation gas to the sample supply port (at the
specified supply pressure).

<SET PARAMETER MODE>
Peak Tracking
1
0:O 1:Track 2:Reset

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3– 01-92-4 A .ver 97020-0009461

2. Turn on the validation gas and adjust the flow to the specified value.

3. Check the factory calibration report for S Factor and/or S Factor
Offset parameter values to be used when measuring validation gas.

4. If applicable, set the appropriate S Factor and/or S Factor Offset

parameter values (see “To change parameters in Mode 2” on
page 3-6).

5. Make a measurement after the gas flows for approximately five
minutes or when the value on the LCD settles.

6. After validation, switch the analyzer back to process ga

s adjust the

flow to the specified value to return to normal operation.

7. If applicable, reset the S Factor and/or S Factor Offset parameter
values to those used for normal operation (typically 1 and 0,
respectively).

SpectraSensors recommends validating the analyzer using only

H2O & CO2 in

CH

4

. A bottle of test gas with a certified concentration representing 50% of full

scale should be used.

Calibrating the Analyzer

Calibrating the analyzer is typically not required under normal circumstances.
SpectraSensors calibrates each analyzer to a National Institute of Standards
and Technology (NIST) traceable standard before shipping the unit to the end
user. Because SpectraSensors analyzers use a non-contact form of
measurement, they are relatively insensitive to contamination, are quite
rugged and virtually maintenance free ensuring years of reliable service.

The adjustment setpoints of the analyzer flowmeters and
pressure regulators will be interactive and may require
readjustment multiple

times until the final setpoints are obtained.

The analyzer system has been designed for the sample flow rate
specified. A lower than specified sample flow rate may adversely
affect analyzer performance. If you are unable to attain the
specified sample flow rate, contact your factory sales
representative.

When procuring a gas standard, make sure the background gas is
that specified (CO

2

in CH4) or a mix that closely resembles the

contents of the process stream and have the

gas standard
certified to better than the specified precision of the analyzer, if
possible.

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SS1000 Operator’s Manual 4–1

4 - SERIAL PORT COMMUNICATIONS

Receiving Serial Data (RS-232 Output)

When the Modbus Mode parameter is set to 0, the analyzer is configured to
transfer a string of data from the analyzer to a serial device via the RS-232
output. The receiving device is typically a computer terminal running
HyperTerminal, which is a program included with Microsoft

®

Windows® 95, 98,
& XP that enables serial communication and the viewing, capturing and storage
of serial port data and messages.

To launch HyperTerminal:

1. On your Windows desktop, click Start followed by Run (usually
located in the lower right side of the Start Menu).

2. Type Hypertrm.exe and hit Return to launch HyperTerminal.

3. Once HyperTerminal is activated, the Connection Description

window appears, as shown in Figure 4–1. Type in a Filename
(where the terminal session settings will be stored for future recall)
and click on any icon. Click OK.

4. The Connect To window appears prompting for a connection, as

shown in Figure 4–2. Click the Menu Arrow under Connect Using
to view the choices.

5. Click on the appropr

iate port to which your analyzer is connected

(COM1, COM2, COM3, etc.) as established under “Connecting the

Output Signals” on page 2-5. Click OK.

6. Once the port is chosen, the COM Properties window appears.

Make sure the COM properties for the port selected reflect those
shown in Figure 4–3 (9600 baud, 8 data bits, 1 stop bit, no parity,
and no flow control).

7. Click OK to establish the connection.

Once connected, the data will start streaming through the Hyperterminal
Window as shown in Figure 4–4.

For quicker access to HyperTerminal, save a HyperTerminal
shortcut to the desktop.

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Figure 4–1 Connection Description window.

Figure 4–2 Connect To window.

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Serial Port Communications

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Figure 4–3 COM Properties window.

Figure 4–4 Hyperterminal window with streaming

data.

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The data string is comma and space delimited with a carriage return and
includes:

• Concentration - analyte concentration (user selected units)

• Pressure - cell pressure (user selected units)

• Temperature - cell temperature (user selected units)

• PP2F - magnitude of concentration signal (counts)

• Powr - DC signal at absorption peak (counts)

• Indx - position of absorption peak in scan

• Reference Peak PP2F (only for DP systems)

• Reference Peak Powr (only for DP systems)

• Reference Peak Indx (only for DP systems)

• Zero - detected signal with laser turned off (counts)

• PkD1 - present midpoint value (mA)

To capture and save data from the serial port:

1. To save the data from the serial port, use the Transfer/Capture

Text function and enter the Filename to where you would like to

store the captured data.

2. To stop the capture of the serial data, click on Transfer/Capture

Text/Stop.

To read diagnostic data with HyperTerminal:

1. Before entering Mode 6, make sure the serial port on the computer

used for serial communication is connected to the analyzer

and the

output stream is showing on the screen as described in “To launch

HyperTerminal” on page 4-1.

2. To save the data from the serial port, use the Transfer/Capture

Text function and enter the Filename to where you would like to

store the captured data.

The number of seconds between each line of data output should
be the # Spectrum Average number set in Mode 2 or Mode 3
divided by 4.

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Serial Port Communications

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–5

3. Once capturing is in place, enter Mode 6 by pressing # key followed

by the 6 key.

The index shown on the LCD display counts by 50’s from 0 to 511 in
a few seconds and the screen displays:

4. Press the # key followed by the 1 key to return to Mode 1.

5. Once normal operation resumes, wait approximately three minutes

then stop the capture of the serial data. To stop the capture of the
serial data, click on Transfer/Capture Text/Stop. The resulting
data files contain the downloaded data as shown in Figure 4–5.

You c

an import th

e stored data file into a spreadsheet program such as

Microsoft Excel

®

to plot the data (see "Viewing Diagnostic Data with

Microsoft Excel" for more information.

Viewing Diagnostic Data with Microsoft Excel

A spreadsheet program such as Microsoft Excel can import the data collected
in the Mode 6 data dump for viewing and plotting.

To import the data file into Excel:

1. In Excel, click Open and choose the name of the spectrum file saved

while in Mode 6. Be sure to select All Files (*.*) under Files of

type: while searching, as shown in Figure 4–7a.

2. T

he Text Import Wizard should open. Choose the Delimited

option and click Next, as shown in Figure 4–7b.

3. Under Delimiters, choose the Tab and Space options, check the

Treat Consecutive Delimiters as One box, as shown in Figure

4–8a, and then click Finish to display the spreadsheet. The first few

+

# 6

Dump Stats Mode...

Index: 0

Mode

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Figure 4–5 Sample diagnostic data output.

SpectraSensors HardHat: v2.31 Single 08-08-08 DM
Idx DC AC

0 3181 3830
1 2699 3727
2 2007 3493
3 1359 3207

<<Information Deleted>>
509 3150 4095

510 3153 4095
511 3157 4095

Computational Statistics v2.31 Single 08-08-08 DM
Ambient counts after averaging

Voltage: -1368 Temperature: -1532 Pressure: -206
ac counts after averaging

Peak Index: 240 Raw Count: 4095
Left Dip Index: 240 Raw Count: 4095
Right Dip Index: 278 Raw Count: -4095
pp2f (peak minus average of dips): 8190

dc counts after averaging
raw at peak index: 2025
computed at peak index: 1714
raw at [peak index - 140]: 736 index: 100
raw at [peak index + 140]: 2692 index: 380
laser off, zero level: -10
dc level (computer power at peak - zero level): 1724
Lf_response (rcalb * dc level): 6616712

Calculated values
Supply Voltage: 4.588 volts
Concentration: 10.9129 ppmv
Temperature: 27.1 C
Pf_MidShift: 0.0000
Pressure: 1076.9 mb

Settings
Phase: 90
Midpoint: 60.0000
Ramp amplitude: 35
Imod: 8
Rcalb: 3.838000E+03
Zero Offset (ppmv): 0.000000E+00
SpanFct(x1000): 1000
Span (ppmv):422.00
PA 1: 1.000E+00
PA 2: 0.000E+00
PA 3: 0.000E+00
PA 4: 0.000E+00
c0 Coeff: 0.00000E+00
c1 Coeff: 1.00000E+00
c2 Coeff: 0.00000E+00
c3 Coeff: 0.00000E+00
Peak Index Location: 290
Xleftvmr: 240
Xrightvmr: 340
Left Dip Range: 100
Right Dip Range: 100
DC Left Range: 140
DC Right Range: 140
Null Fail Range Min: -50
Null Fail Range Max: 50
mA Index Scale: 0.03030303
Peak Track Range Min: 3
Peak Track Range Max: 70
Peak Track Num Avgs: 3600
Peak Track Con Span: 10
Peak Track Con Span: 95
Peak Track Temp Min: -5

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Serial Port Communications

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–7

Figure 4–6 Sample diagnostic data output
(continued).

Peak Track Temp Max: 60
PT Matrix: 1
fc0 Background Coeff: 1.00000E+00
fc1 Background Coeff: 0.00000E+00
fc2 Background Coeff: 0.00000E+00
fc3 Background Coeff: 0.00000E+00
fp0 Background Corr: 1.00000E+00
fp1 Background Corr: 0.00000E+00
fp2 Background Corr: 0.00000E+00
fp3 Background Corr: 0.00000E+00
pp2f Direction: 1
Ref Peak Range Min: -180
Ref Peak Range Max: -80
Ref PeakTo Dip Range: -100
Serial Number: 100000000
S Factor: 1.00000
S Factor Offset: 0.00000
# Spectrum Average: 4
Logger Rate: 4
Peak Tracking: 0
DO Alarm Setup: 0
Alarm Setpoint(ppmv): 430.0
4-20mA Alarm Action: 0
4-20mA % Test: 101
4 mA span (ppmv): 0.000
20 mA span (ppmv): 422.000
Temperature Unit: 0
Pressure Unit: 0
Concentration Unit: 0
Pipeline Pressure: 0.00
Modbus Address: 0
Modbus Mode: 0
User Analyzer ID: 0
User Sample ID: 0
User Component ID: 0

Constants
Kf_spanfactorFactor: 0.001000
Null Point: 6

Diagnostics
ppmv: 10.9129
PP2F: 8190
Power: 1714
PkDf: 60.0000
PkDl: 60.0000
Index: 240
Zero: -10

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Figure 4–7 a) Opening a data file in Excel. b) Setting
data type in Text Import Wizard.

b)

a)

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Serial Port Communications

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Figure 4–8 a) Setting Tab and Space as delimiters.
b) Highlighting imported data for plotting in Excel.

a)

b)

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lines look like the normal serial output data received before the
Mode 6 command was entered. Look for the three columns of
numbers at the bottom of the file.

4. Click on the upper right cell of the three columns, as shown in Figure
4–8b. Hold the Shift key down while pressing the End key followed
by the Down Arrow key to highlight the third column. Keep holding
down the Shift key and press the End key followed by the Left

Arrow key to select the three columns by 512 rows.

5. Click the Chart Wizard button on the Task Bar.

The Chart

Wizard

should open, as shown in Figure 4–9.

6. Choose the X-Y (Scatter) chart type and the Smoothed Lines
Without Markers sub-type. Click Finish to display a graph of the

spectrum, as shown in Figure 4–10a. If the 2f curve appears flat,
double click on it to get to the Format Data Series Window. Select
the Axis tab, and select Plot Series on Secondary Axis, as shown
in Figure 4–10b. Click OK to rescale the plot.

Modbus Communications Protocol

Modbus is a serial communications protocol published by Modicon in 1979 for
use with its programmable logic controllers (PLCs). It has become a de facto

Figure 4–9 Chart Wizard - Step 1 window.

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Serial Port Communications

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–11

-500

0

500

1000

1500

2000

2500

3000

0 200 400 600

-150

-100

-50

0

50

100

150

200

250

Series1

Series2

Figure 4–10 a) Data file plot in Excel. b) Format
Data Series window.

a)

b)

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standard communications protocol in industry, and is now the most commonly
available means of connecting industrial electronic devices. Modbus is used

extensively in leu of other communications protocols because it is openly
published and royalty-free, relatively easy to deploy, and capable of moving
raw bits or words without placing many restrictions on vendors.

Modbus enables communication between many devices connected to the same
network, for example, a supervisory computer with a remote terminal unit
(RTU) in supervisory control and data acqui

sition (SCADA) systems.

The S

pectraSensors analyzer acts as a slave in a master/slave(s) network of
devices. It can receive queries from a master and send responses back using
either Gould Modbus RTU protocol or Daniel Extended Modbus RTU protocol.

Framing/Protocol

The transmission mode used to communicate is either Gould Modbus RTU or

Daniel Modbus RTU with port parameters 9600 (baud rate), 8 (data bits), 1
(stop bit), no (parity), and none (flow control/handshake).

The transmission mode is set by the user via the Modbus Mod

e parameter.
See “To change parameters in Mode 2” on page 3-6. Note that the generic
serial output (HyperTerminal) is disabled if either Gould or Daniel Modbus is
selected.

Functions

Available functions are 0x03 (read holding registers), 0x06 (write to a single

register), 0x16 (write to multiple registers), and 0x43 (read device
identification).

Addressing

The analyzer's Modbus slave node address can be in the range of 0-250 with

the default being 1. All analyzers will respond to an address of 0, so this
address can be used to interrogate a single

unit when its address is unknown

or to determine its address.
See Table 4–1 on page 4–15 for register definitions for both Gould and Daniel

Modbus modes. Be aware that for Gould Modbus the table follows the
convention of identifying the register with an offset of 40001. For example, the
actual value transmitted in the starting register field of the command is the
listed register value minus 40001, e.g. register 47001 is addressed as 7000.

Reading/Writing in Daniel Modbus Mode

Daniel Modbus supports three types of registers: short integer, long integer and

floating point. Each “short integer” register is two bytes in length and will
contain an integer value. Each “long integer” register is four bytes in length and
will contain an integer value and each “floating point” register is four bytes in
length and will contain a floating point value.

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Serial Port Communications

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Reading/Writing in Gould Modbus Mode

Gould Modbus supports three types of variable data, short integer, long integer
and floating point, but all registers are addressed as word (two byte) registers.
A “short integer” value is contained in one register whereas a “long integer” or
“floating point” value requires two contiguous registers. The registers are
defined as Read or Read/Write.

An appropriate password must be downloaded to the password register prior
to writing to most registers. The User Level 1 (L1)

user password 314

2 will
allow access to those registers which have been pre-defined as user
configurable. Other writable registers can only be downloaded or changed by
SpectraSensors support personnel using a User Level 2 (L2) password.

To enable Modbus communications:

1. Confirm that the serial cable has been properly connected. See
“Connecting the Output Signals” on page 2-5.

2. Power up the analyzer (see “Powering Up the Analyzer” on page

3-1).

3. Press the # key followed by the 2 key (Channel A) or the # key
followe

d by the 3 key (Channel B). The LCD prompts for a numeric

password. Enter the user password (3142) on the keypad, then
press the * key to enter the number to enter Mode 2 (Set Parameter

Mode - Channel A) or Mode 3 (Set Parameter Mode - Channel B).

Use caution when writing to registers as changing the value of a
writable register may affect the calibration of the analyzer.

<SET PARAMETER MODE>

Enter password

v2.41 08-12-08 DM

<SET PARAMETER MODE>

S Factor

1.00000
Enter a value

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4. Press the * key repeatedly until the Modbus Address parameter is
displayed.

5. Enter the desired Modbus Address and press the * key to store the
value and cycle to the Modbus Mode parameter.

6. Enter the desired Modbus Mode and press the * key to store the
value.

7. Press the # key followed by the 1 key to return to Mode 1.The
analyzer is now ready to receive Modbus queries.

<SET PARAMETER MODE>
Modbus Address
1
Enter a value(1-250)

<SET PARAMETER MODE>
Modbus Mode
0
0:O 1:GMR 2:DMR

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Table 4–1 Modbus register map .

Parameter

Daniel

Reg.

Gould

Reg.

Data
Type

Action Min Max

Concentration 7001 47001 Float Read 0 0
Temperature 7002 47003 Float Read 0 0

00daeRtaolF500743007erusserP
00daeRtaolF9007450071DkP

Firmware Version 7057 47113 Float Read 0 0

taolF102741017rotcaF S

R/W L1

a

0 9

S Factor Offset 7102 47203 Float

R/W L1

a

-9 9

Pipeline Pressure 7104 47207 Float

R/W L1

a

0 9999.9
4 mA span Not applicable for SS1000
20 mA span Not applicable for SS1000
Zero Offset 7151 47301 Float

R/W L2

b

-100000 100000

Span Not applicable for SS1000

taolF5037435171AP

R/W L2

b

-299 299

taolF7037445172AP

R/W L

2

b

-299 299

taolF9037455173AP

R/W L2

b

-299 299

taolF1137465174AP

R/W L2

b

-299 299

taolF313747517ffeoC 0C

R/W L2

b

-999999 999999

taolF513748517ffeoC 1C

R/W L2

b

-999999 999999

taolF713749517ffeoC 2C

R/W L2

b

-999999 999999

taolF913740617ffeoC 3C

R/W L2

b

-999999 999999

taolF323742617fDkP

R/W L2

b

1 249

taolF523743617blaCR

R/W L2

b

10 100000
Alarm Flags 5001 45001 Long Read 0 0
Analyzer ID 5101 45201 Long

R/W L1

a

0 2.0E9

Sample ID 5102 45203 Long

R/W L1

a

0 2.0E9

Component ID 5103

45205 Long

R/W L1

a

0 2.0E9

Serial Number 5152 45303 Long

R/W L2

b

0 4.2949E9

00daeRtrohS100341003F2PP
00daeRtrohS200342003rwoP
00daeRtrohS300343003xdnI
00daeRtrohS400344003oreZ

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Modbus Accessible Parameter Definitions

• Concentration – current live concentration in selected engineering

units.

• Temperature – current live temperature of the gas sample in

selected engineering units.

• Pressure – current live pressure reading of the gas sample in

selected engineering units atmospheric.

• PkD1 – midpoint current (mA) of laser scan being used in the

analyzer when peak tracking is turned on.

• Firmware Version – firmware version running in the analyzer.

• S Factor – slope adjustment enabling the analyzer to be tuned to

match a specific calibration standard without affecting the factory
calibration.

# Spectrum Average 3201 43201 Short

R/W L1

a

1 240

Logger Rate 3202 43202 Short

R/W L1

a

1 299

Peak Tracking 3203 43203 Short

R/W L1

a

0 2
Alarm Action Not applicable for SS1000
Temperature Unit 3205 43205 Short

R/W L1

a

0 1
Pressure Unit 3206 43206 Short

R/W L1

a

0 3
Concentration Unit 3207 43207 Short

R/W L1

a

0 2
Modbus Device Address 3208 43208 Short

R/W L1

a

0 250
Modbus Mode 3209 43209 Short

R/W L1

a

0 2
DO Alarm Setup 3210

43210 Short

R/W L1

a

0 107
4-20mA % Test Not applicable for SS1000

trohS103341033esahP

R/W L2

b

1 358
Ramp Amplitude 3303 43303 Short

R/W L2

b

1 249

trohS403344033domI

R/W L2

b

0 99
Password 4999 44999 Short R/W 0 9999

a. Write privilege requires User Level 1 (L1) password to be downloaded to the Pass-

word register.

b. Write privilege requires User Level 2 (L2) password to be downloaded to the Pass-

word register

Table 4–1 Modbus register map (Continued).

Parameter

Daniel

Reg.

Gould

Reg.

Data
Type

Action Min Max

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Serial Port Communications

401-92-4 A .ver 97020-00094

–17

• S Factor Offset – offset adjustment enabling the analyzer to be

tuned to match a specific calibration standard without affecting the
factory calibration.

• Pipeline Pressure – sets the pressure used in calculating dew point.

The pressure unit is mb when setting this parameter via Modbus
communications and as set by the Pressure Unit parameter when
setting via the front panel.

• Zero Offset – factory set offset applied to the concentration

calculation before compensation coefficients. A negative value adds
and a positive value subtra

cts.

• PA1, PA2, PA3, PA4 – factory set coefficients in the pressure

compensation equation. Should not be changed in field.

• C0, C1, C2, C3 – factory set non-linearity coefficients for extended

range equipment. Should not be changed in field.

• PkDf – midpoint current (mA) of laser scan.

• Rcalb – factory set gain adjustment for the concentration reading.

• Alarm Flags – long integer register identifying the status of each

individual alarm in the analyzer as follows:

Bit 0 = 1, general fault condition exists
Bi

t 1 = 1, Null Fail alarm cond

ition exists
Bit 2 = 1, Spectrum Fail condition exists
Bit 3 = 1, P/T Fail condition exists
Bit 4 = 1, Power Fail condition exists
Bit 5 = 1, Track Fail condition exists

• User Analyzer ID – user defined numeric analyzer ID.

• User Sample ID – user defined numeric sample ID.

• User Component ID – user defined numeric component ID.

• Serial Number – factory assigned hardware serial number for the

analyzer.

• PP2F – (counts) concentration signal.

• Powr – (counts) laser power detected at the absorption peak.

• Indx – position of the absorption peak along scan.

• Zero – (counts) detected signal level with laser off.

• # Spectrum Average – number of scans averaged for each

measurement.

• Logger Rate – running average of the concentration reading.

• Peak Tracking – turns peak tracking on and off.

• Temperature Unit – sets the temperature units.

• Pressure Unit – sets the pressure units.

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SS1000 Operator’s Manual

4– 01-92-4 A .ver 97020-0009481

• Concentration Unit – sets the concentration units.

• Modbus Address – user assigned numeric address identifying

analyzer to Modbus host system.

• Modbus Mode – sets the Modbus communication protocol type.

• DO Alarm Setup – sets function of the secondary digital output.

• Phase – factory set phase relationship between the modulating

current and lock-in detection circuit.

• Ramp Amplitude – factory set laser current scan range about the

midpoint.

• Imod – factory set laser current modulation amplitude.

• Password – password required to change register settings. In the

above table those registers denoted as R/W L1 can be modified if the
User Level 1 password is downloaded to this register. Likewise, those
registers denoted as R/W L2 can only be modified if the level 2
password is downloaded to this register. Level 2 registers are
reserved for SpectraSensors personnel use only.

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SS1000 Operator’s Manual A–1

Appendix A: Troubleshooting

This section presents recommendations and solutions to common problems,
such as gas leaks, contamination, excessive sampling gas temperatures and
pressures, and electrical noise. If your analyzer does not appear to be
hampered by one of these related problems, contact your sales representative
for service.

Gas Leaks

Probably the most common cause of erroneous measurements is outside air
leaking into the sample supply line. It is recommended the supply lines be

periodically leak-tested, especially if the

analyzer has been relocated or has
been replaced or returned to the factory for service and the sample lines have
been reconnected.

Membrane Separator Filter

The analyzer comes equipped with a membrane separator filter that separates
out entrained liquids from the sample gas. If moisture accumulation is
suspected, briefly open the bypass valve on the membrane separator filter to
clear out any liquids.

If measured moisture concentration levels are higher than actual or an excess
amount of wet ga

s has pass

ed through the filter, the membrane may need to

be replaced.

To replace the membrane:

1. Detach the 1/8" inlet tubing and the 1/4" compression fitting from
the sample supply port on the analyzer.

2. Unscrew the two 10-32 socket head cap screws that attach the filter
to the analyzer.

Do not use plastic tubing of any kind for sample lines. Plastic
tubing is permeable to moisture and other substances which can
contaminate the sample stream. SpectraSensors recommends
using 1/4" O.D x0.035" wall thic

kness, seamless

stainless steel

tubing.

Process samples may contain hazardous material in potentially
flammable and/or toxic concentrations. Personnel should have a
thorough knowledge and understanding of the physical properties
and safety precautions for the sample contents before operating
the SCS.

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SS1000 Operator’s Manual

A

– 01-92-4 A .ver 97020-000942

3. Once detached, remove the four socket head cap screws in the filter
body.

4. Open the filter body and replace the membrane.

5. Reassemble the filter body and attach the filter to the analyzer.

6. Connect the 1/8" inlet tubing and the 1/4" compression fitting to the

sample supply port on the analyzer.

7. Tighten all new compression fittings 1-1/4 turns with a wrench from
finger tight. For connections with previously swaged ferrules, thread
the nut to the previously pulled up position, then tighten slightly with
a wrench. Secure tubi

ng to appropriate structural supports as

required.

8. Check all connections for gas leaks. SpectraSensors recommends
using a liquid leak detector.

Contamination

Contamination and long exposure to high humidity are valid reasons for
periodically cleaning the gas sampling lines. Contamination in the gas sampling
lines can potentially find its way to the sample cell and deposit on the optics or
interfere with the measurement in some other way. Although the analyzer is
designed to withstand some contaminat

ion, it is recomme

nded to always keep

the sampling lines as contamination free as possible.

To keep the sampling lines clean:

1. Make sure that a membrane separator filter (included with most
systems) is installed ahead of the analyzer and operating normally.
Replace the membrane if necessary. If liquid enters the cell and
accumulates on the internal optics, a Power Fail will result.

2. If mirror contamination is suspected, see “Cleaning the Mirrors”
on page A-3.

3. Turn off the sample valve at the tap in accordance with site loc

k-out,

tag-out rules.

4. Disconnect the gas sampling line from the supply port of the
analyzer.

5. Wash the sampling line with alcohol or acetone and blow dry with
mild pressure from a dry air or nitrogen source.

6. Once the sampling line is completely free of solvent, reconnect the
gas sampling line to the supply port of the analyzer.

Do not exceed 10 psig (0.7 barg) in sample cell. Damage to cell
may result.

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Troubleshooting

A01-92-4 A .ver 97020-00094

–3

7. Tighten all new compression fittings 1-1/4 turns with a wrench from
finger tight. For connections with previously swaged ferrules, thread
the nut to the previously pulled up position, then tighten slightly with
a wrench. Secure tubing to appropriate structural supports as
required.

8. Check all connections for gas leaks. SpectraSensors recommends
using a liquid leak detector.

Cleaning the Mirrors

If contamination makes its way into the cell and accumulates on the internal
optics, a Power Fail will result. If mirror contamination is sus

pected, please
consult with your factory sales representative before attempting to clean the
mirrors. If advised to do so, use the following procedure.

Tools and Supplies:

• Lens cleaning cloth (Cole Parmer

®

EW-33677-00 TEXWIPE

®

Alphawipe® Low-Particulate Clean Room Wipes or equivalent)

• Reagent-grade isopropanol (ColeParmer

®

EW-88361-80 or

equivalent)

• Small drop dispenser bottle (Nalgene

®

2414 FEP Drop Dispenser

Bottle or equivalent)

• Acetone-impenetrable gloves (North NOR CE412W Nitrile Chemsoft™

CE Cleanroom Glo

ves or equivalent)

• Hemostat (Fisherbrand™ 13-812-24 Rochester-Pean Serrated

Forceps)

• Bulb blower or dry compressed air/nitrogen

• Torque wrench

Do not attempt to clean the cell mirror until you have consulted
with your factory service representative and have been advised to
do so.

The sample cell assembly contains a low-power, 10 mW MAX, CW
Class IIIb invisible laser with a wavelength between 700­3000 nm. Never open the sample cell flanges or the optical
assembly unless

the power is turned off.

Alway

s handle the optical assembly by the edge of the mount.

Never touch the coated surfaces of the mirror.

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SS1000 Operator’s Manual

A– 01-92-4 A .ver 97020-000944

• Marker

• Flashlight

To clean the mirrors:

1. Power down the analyzer following the procedure outlined in “To
power down the analyzer” on page 3-2.

2. Close the pressure regulator at the field-pressure reducing station

(adjustment knob turned fully counter-clockwise).

3. Close the sample probe isolation valve.

4. Close the low-pressure flare or atmospheric vent header shut-off

valve.

5. Disconnect the analyzer from the sample supply and return lines.

6. If possible, purge the system with nitrogen for 10 minutes.

7. Carefu

lly mark the orientat

ion of the mirror assembly on the cell

body.

8. Gently remove the mirror assembly from the cell by removing the 6
socket-head cap screws and set on a clean, stable and flat surface.

9. Look inside the sample cell at the top mirror using a flashlight to
ensure that there is no contamination on the top mirror.

10. Remove dust and other large particles of debris using a bulb blower
or dry compressed air/nitrogen. Pressurized gas duster products are
not recommended as the propellent may deposit liquid droplets onto
the optic

surface.

11. Put on clean acetone-impenetrable gloves.

12. Double fold a clean sheet of lens cleaning cloth and clamp near and

along the fold with the hemostats or fingers to form a “brush.”

13. Place a few drops of isopropanol onto the mirror and rotate the
mirror to spread the liquid evenly across the mirror surface.

Careful marking of the mirror orientation is critical to restoring
system performance upon reassembly after cleaning.

Due to its proximity to the optical head, SpectraSensors does not
reco

mmend cleaning the top mirror. If the top mirror is visibly

contaminated, contact your factory service representative.

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Troubleshooting

A01-92-4 A .ver 97020-00094

–5

14. With gentle, uniform pressure, wipe the mirror from one edge to the
other with the cleaning cloth only once and only in one direction to
remove the contamination. Discard the cloth.

15. Repeat with a clean sheet of lens cleaning cloth to remove the streak
left by the first wipe. Repeat, if necessary, until there is no visible
contamination on the mirror.

16. Carefully replace the mirror assembly onto the cell in the same
orientation as previously marked making sure the o-ring is properly
seated.

17. Tighten the 6 socket-head cap screws evenly with a

torque wrench

to 13 in-lbs.

Excessive Sampling Gas Temperatures and
Pressures

The embedded software is designed to produce accurate measurements only
within the allowable cell operating range (see Table B–1 on page B–1 or
Table B–2 on page B–2). Pressures and temperatures outside these ranges will
trigger a P/T Fail fault.

Electrical Noise

High levels of electrical noise can interfere with laser operation and cause it to
become unstable. Always connect the analyzer to a properly grounded po

wer

source.

Peak Tracking Reset Procedure

The analyzer’s software is equipped with a peak tracking function that keeps
the laser scan centered on the absorption peak. Under some circumstances,
the peak tracking function can get lost and lock onto the wrong peak. If the
difference between PkDf and PkD1 is more than 4, or Track Fail is displayed,
the peak tracking function should be reset.

Never rub an optical surface, especially with dry tissues, as this
can mar or scratch the coated surface.

If the press

ure, temperature, or any other readings on the LCD
appear suspect, they should be checked against the specifications
(see Table B–1 on page B–1 or Table B–2 on page B–2).

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SS1000 Operator’s Manual

A

– 01-92-4 A .ver 97020-000946

To check the PkDf and PkD1 values:

For Channel A, press the # key followed by the 4 key to enter Mode 4 (System
Diagnostic Parameters - Channel A) or press the # key followed by the 5 key

to enter Mode 5 (System Diagnostic Parameters - Channel B). A brief wait
screen will appear as the diagnostic data for Channel B is polled.

18. Compare the values for PkDf and PkD1. If the difference is more
than 4, reset the peak tracking function.

To reset the Peak Tracking Function:

1. Press the # key followed by the 2 key (Channel A) or the # key
followed by the 3 key (Channel B). The LCD prompts for a numeric

password. Enter the user password (3142) on the keypad, then

PP2F:8190 PkDf:34.00
Powr:2538 PkD1:34.00
Indx: 301
Zero: -24

<Diagnostic for CHB>

Please wait...

PP2F:8190 PkDf:47.00
Powr:2028 PkD1:47.00
Indx: 253 T: 50.7
Zero: -16 P: 955.7

<SET PARAMETER MODE>

Enter password

v2.40 08-12-08 DM

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Troubleshooting

A01-92-4 A .ver 97020-00094

–7

press the * key to enter the number to enter Mode 2 (Set Parameter

Mode - Channel A) or Mode 3 (Set Parameter Mode - Channel B).

2. Press the * key to cycle through the screens until the Peak
Tracking parameter appears.

3. Press 2 (RESET) followed by the * key. The peak tracking function

will cycle off then on and reset.

4. Press the mode key # followed by 1 to return to Mode 1 (Normal
Mode).

Instrument Problems

If the instrument does not appear to be hampered by gas leaks, contamination,
excessive sampling gas temperatures an

d pressures, or electrical noise, refer

to Table A–2 before contacting your sales representative for service.

Removing the Cover

If necessary, the analyzer cover can be removed by first unscrewing the ten

cover screws, as shown in Figure B–1, and gently lifting the cover off the
system taking care not to damage the display and keypad cables. Disconnect

the display and keypad cables if necessary to gain access to the internal
components.

The display and keypad cables are attached to the electronics
inside the housing. Care must be taken when removing the cover
to avoid damaging the cables or connectors. If disconnecting the
cables is necessary, be sure to reconnect each one with the proper
orientation. When reattaching the cover make sure the cables are
not pinched between the body and the cover.

<SET PARAMETER MODE>

S Factor

1.00000
Enter a value

<SET PARAMETER MODE>
Peak Tracking
1
0:O 1:Track 2:Reset

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SS1000 Operator’s Manual

A

– 01-92-4 A .ver 97020-000948

Checking the Fuses

The main fuse is located on the back panel of the analyzer, as shown in Figure

B–1. An additional fuse is located on the DC to DC converter board inside the
housing, as shown in Figure B–2. If you need to replace a fuse, use only the

same type and rating of fuse as the original as listed in Table A–1.

Service Contact

If the troubleshooting solutions do not resolve the problem, contact your sales
representative. If returning the unit is required, obtain a Return Materials

Authorizatio

n (RMA) Number from your sales representative before

returning the analyzer to the factory. Your sales representative can determine
whether the analyzer can be serviced on-site or should be returned to the
factory.

Disclaimers

SpectraSensors accepts no responsibility for consequential damages arising
from the use of this equipment. Liability is limited to replacement and/or repair
of defective components.

This manual contains information protected by copyright. No part of this guide
may be photocopied or reproduced

in any form without prior written consent

from SpectraSensors.

Warranty

The manufacturer warrants the items delivered shall be free from defects
(latent and patent) in material and workmanship for a period of one year after
delivery to the Buyer. The Buyer’s sole and exclusive remedy under this
warranty shall be limited to repair or replacement. Defective goods must be

returned to the manufacturer and/or its distributor for valid warranty claims.
This warranty shall become inapplicable in instances where the items ha

ve

been misus

ed or otherwise subjected to negligence by the Buyer.

Notwithstanding any other provision of this contract, no other warranties,
whether statutory or arising by operation of law, expressed or implied,
including but not limited to those of merchantability or fitness for particular

Table A–1 Fuse specifications (refer to Figure B–1 or Figure B–2).

DWG Ref. Description Rating

F1 Miniature Fuse, 5 x 20 mm, Time Delay 250VAC/3.00A
F2 Miniature Fuse, 5 x 20 mm, Time Delay 250VAC/3.15A

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Troubleshooting

A01-92-4 A .ver 97020-00094

–9

purpose, shall apply to the goods or services hereunder, other than the repair
and replacement warranty above. Seller shall in no event be liable to Buyer or
any third party for any damage, injury or loss, including loss of use or any
direct or indirect incidental or consequential damages of any kind.

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SS1000 Operator’s Manual

A

– 01-92-4 A .ver 97020-0009401

Table A–2 Potential instrument problems and solutions .

Symptom Response

Non-Operation (at start up) Is the power switch on?

Is the battery dead? If so, connect the
charger.

Non-Operation (after start up) Is the battery dead? If so, connect the

charger.
Check fuse(s). If bad, replace with

equivalent amperage, slow-blow fuse.
Contact a factory sales representative

for service information.

Power Fail

Turn off the power switch, remove the
cover and check the optical head cables
for a loose connection. Do not discon-

ne

ct or reconnect any optical head

cable

s with the power turned on.

Verify power failure by pressing the #
key followed by the 4 key and checking
the DC value. If it is greater than 200,
then the Power Fail fault is spurious.
Return to Mode 1 by pressing the #
key followed by the 1 key and see if the
fault has changed.

Check the inlet and outlet tubes to see
if they are under any stress. Remove
the connections to the inlet and outlet
tubes and see if the power goes up.
Perhaps th

e existing tubing ne

eds to be
replaced with stainless steel flexible
tubing.

Capture diagnostic data and send the
file to SpectraSensors (see “To read

diagnostic data with HyperTermi­nal” on page 4-4).

Possible alignment problem. Contact a
factory sales representative for service
information.

Possible mirror contamination issue.
Contact a factory sales representative
for service information. If advised to do
so, clean the mirrors by following the
instructions under

“To clean the mir-

rors

” on page A-4.

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Troubleshooting

A01-92-4 A .ver 97020-00094

–11

Null Fail Verify Null Fail fault by pressing the #

key followed by the 4 key and checking
the zero reading is outside the range of

-50 to 50. If not, the Null Fail fault is
spurious. Return to Mode 1 by press­ing the # key followed by the 1 key

and see if the fault has changed.
Capture diagnostic data and send the

file to SpectraSensors (see “To read

diagnostic data with HyperTermi­nal” on page 4-4).

Table A–2 Potential instrument problems and solutions (Continued).

Symptom Response

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SS1000 Operator’s Manual

A

– 01-92-4 A .ver 97020-0009421

Spectrum Fail Turn off the power switch, remove the

cover and check the optical head cables
for a loose connection. Do not discon-

nect or reconnect any optical head
cables with the power connected.

Turn the analyzer off for 30 seconds
and then turn it on again.

Reset the peak tracking (see “Peak
Tracking Reset Procedure” on page
A-5).

Capture diagnostic data and send the
file to SpectraSensors (see “To read

diagnostic data with HyperTermi­nal” on page 4-4).

P/T Fa

il Chec

k that the actual pressure in the
measurement cell is within specification
(see Table B–1 on page B–1 or
Table B–2 on page B–2).

If the pressure reading is incorrect,
Turn off the power switch, remove the
cover and check that the pressure/tem­perature cable is tight. Check the con­nector on the pressure transducer.
Check the pressure connector on the
driver board.

Check that the actual temperature in
the measurement cell is within specifi­cation (

see Table B

–1 on page B–1 or

Table B–2 on page B–2).
If the temperature reading is incorrect,

Turn off the power switch, remove the
cover and check that the pressure/tem­perature cable is tight. Check the con­nector on the cell temperature sensor.
Check the temperature connector on
the driver board. (Note: A temperature
reading greater than 150 °C indicates a
short circuit on the temperature sensor
leads; a reading of less than –40 °C
indicates an open ci

rcuit).

Table

A–2 Potential instrument problems and solutions (Continued).

Symptom Response

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Troubleshooting

A01-92-4 A .ver 97020-00094

–13

Track Fail Press the # key followed by the 4 key

and see if PkDf and PkD1 differ by
more than 4, otherwise erroneous
fault.

Reset the peak tracking (see “Peak

Tracking Reset Procedure” on page
A-5).

Front panel display is not lit and no char­acters appear

Turn off the power switch, remove the
cover and check connections of the dis­play cable.

Strange characters appear on front panel
display

Turn off the power switch, remove the
cover and check conn

ections of t

he dis-

play cable.

Pressing keys on front panel do not have
specified effect

Turn off the power switch, remove the
cover and check connections on keypad

cable.

Reading seems to always be high by a
fixed amount

See “Adjusting Analyzer Reading to
Match Specific Standard(s)” on
page 3-12.

Capture diagnostic data and send the
file to SpectraSensors (see “To read

diagnostic data with HyperTermi­nal” on page 4-4).

Reading seems to always

be high by a

f

ixed percentage

See “Adjusting Analyzer Reading to
Match Specific Standard(s)” on
page 3-12.

Capture diagnostic data and send the
file to SpectraSensors (see “To read

diagnostic data with HyperTermi­nal” on page 4-4).

Reading seems to always be low by a
fixed amount

See “Adjusting Analyzer Reading to
Match Specific Standard(s)” on
page 3-12.

Capture diagnostic data and send the

file to SpectraSensors (see “To read

diagnostic data with H

yperTermi-

na

l” on page 4-4).

Reading seems to always be low by a
fixed percentage

See “Adjusting Analyzer Reading to
Match Specific Standard(s)” on
page 3-12.

Table A–2 Potential instrument problems and solutions (Continued).

Symptom Response

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SS1000 Operator’s Manual

A

– 01-92-4 A .ver 97020-0009441

Reading is erratic or seems incorrect Check for contamination in the sample

system, especially if the readings are
much higher than expected.

Capture diagnostic data and send the

file to SpectraSensors (see “To read

diagnostic data with HyperTermi-

nal” on page 4-4).

Reading goes to full scale

Gas concentration is greater than or

equal to full scale value.

Serial Output is displaying garbled data

Make sure the computer COM port is

set for 9600 baud, 8 data bits, 1 stop

bit, no par

ity, and no flow c

ontrol.

Be sure no other programs are using
the COM port selected.

Make sure the connections are good.

Verify the correct pin connections with

an ohmmeter.

Make sure to select the correct COM

port that the cable is plugged into.

LCD does not update. Unit is locked up.

Switch off power, wait 30 seconds, and

then switch power back on.

eht naht ssel si noitartnecnoc saG”0“ ot seog gnidaeR

lower detection limit.

Serial output is prov

iding no

data Make sure the computer COM port is

set for 19200 baud, 8 data bits, 1 stop
bit, no parity, and no flow control.

Be sure no other programs are using

the COM port selected.

Make sure the connections are good.

Verify the correct pin connections with

an ohmmeter.

Make sure to select the correct COM

port into which the cable is plugged.

Table A–2 Potential instrument problems and solutions (Continued).

Symptom Response

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SS1000 Operator’s Manual B–1

Appendix B: Specifications

Table B–1 SS1000 moisture in natural gas analyzer specifications.

Performance

Concentration (H20)

a

a. Consult factory for alternative ranges.

0.5–20 lbs/MMSCF (10–422 ppmv)
)vmpp4±( FCSMM/bl2.0± ytilibataepeR

Response time

b

b. Software adjustable.

Display updates every second

Application Data

Environmental Temperature Range -4 to 122 °F (-20 to 50 °C) Standard

14 to 140 °F (-10 to 60 °C) Optional

Environmental Relative Humidity 80% for temperatures up to 31°C MAX

m

0004 ot pUedutitlA

)grab1.2–7.1( gisp03–52erusserP telnI elpmaS

)grab7.0 ot 3.0–( gisp01 ot 5.4–erusserP gnitarepO lleC

)MPL 0.1–5.0( HFC 2–1etaR wolF elpmaS

,senima ,lonahtem ,locylg esahp sag rof enoNytivitisneS tnanimatnoC

hydrogen sulfides or mercaptans.

Electrical & Communications

Input Voltages

c

c. Supply voltage not to exceed ±10% of nominal. Transient over-voltages according to

category II.

100–240 VAC, 50/60 Hz

9–16 VDC or

18–32 VDC

CAV042@A5.0 ,CAV021@A1tnerruC

1.6 A @ 24 VDC, 3.2 A @ 12 VDC
subdoM leinaD/dluoG ro 232SR cireneGstuptuO

4–20mA Loop (concentration only)

erutarepmet llec ,erusserp llec ,noitartnecnoCyalpsiD DCL

Physical Specifications

Dmm041xWmm604xHmm754eziS

(18"Hx 16" W x 5.5" D)

)gK5.11( sbl52 .xorppAthgieW

leetS sselniatS dehsiloP seireS L613noitcurtsnoC lleC elpmaS

Area Classification

D & C spuorG ,2 noisiviD ,I ssalC ASCnoitacifitreC

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SS1000 Operator’s Manual

B

– 01-92-4 A .ver 97020-000942

Table B–2 SS1000 carbon dioxide in natural gas analyzer specifications.

Performance

Concentration (CO2)

a

a. Consult factory for alternative ranges.

0–10%

%2.0± ytilibataepeR

Response time

b

b. Software adjustable.

Display updates every second

Application Data

Environmental Temperature Range -4 to 122 °F (-20 to 50 °C) Standard

14 to 140 °F (-10 to 60 °C) Optional

Environmental Relative Humidity 80% for temperatures up to 31°C MAX

m0004 ot pUedutitlA

)grab1.2

–7.1( gisp03–52erusserP telnI elpmaS

)grab7.0 ot 3.0–( gisp01 ot 5.4–erusserP gnitarepO lleC

)MPL 0.1–5.0( HFC 2–1etaR wolF elpmaS

,senima ,lonahtem ,locylg esahp sag rof enoNytivitisneS tnanimatnoC

hydrog

en sulfides or mercaptans.

Electrical & Communications

Input Voltages

c

c. Supply voltage not to exceed ±10% of nominal. Transient over-voltages according to

category II.

100–240 VAC, 50/60 Hz

9–16 VDC or 18–32 VDC

CAV042@A5.0 ,CAV021@A1tnerruC

1.6 A @ 24 VDC, 3.2 A @ 12 VDC
subdoM leinaD/dluoG ro 232SR cireneGstuptuO

4–20mA Loop (co

ncentration only)

erutarepmet llec ,erusserp llec ,noitartnecnoCyalpsiD DCL

Physical Specifications

Dmm041xWmm604xHmm754eziS

(18"Hx 16" W x 5.5" D)

)gK5.11( sbl52 .xorppAthgieW

leetS sselniatS dehsiloP seireS L613noitcurtsnoC lleC elpmaS

Area Classification

D & C spuorG ,2 noisiviD ,I ssalC ASCnoitacifitreC

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Specifications

B01-92-4 A .ver 97020-00094

–3

PO WE R S WI TC H

RS232 PORT

FU S E (F1)

BATT ER Y CH ARG E R

INP UT

SA MP LE

R E TURN

LIQUI D DRA I N

SA MP LE S U PP LY

(10 PS IG M AX.)

MEM BRAN E

S E PARATOR

HAND LE ( S HO WN I N

FO L DE D POS ITI ON)

L CD

DISP L AY

KEY PAD

6.68

[170 ]

16. 60

[422 ]

18.1 9

[462 ]

8.66

[220 ]

6.68

[170 ]

CO VE R

SCR EW (X1 0)

Figure B–1 SS500/SS2000 analyzer external features.

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SS1000 Operator’s Manual

B

– 01-92-4 A .ver 97020-000944

Figure B–2 Fuse location on DC to DC converter.

FU S E (F 2)

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Specifications

B01-92-4 A .ver 97020-00094

–5

Spare Parts

Below is a list of spare parts for the SS1000 Operator’s Manual analyzer with
recommended quantities for 2 years of operation. Due to a policy of continuous
improvement, parts and part numbers may change without notice. Not all parts
listed are included on every analyzer. When ordering, please specify the system
serial number to ensure that the correct parts are identified.

Table B–3 Replacement parts for SS1000 SS1000 Operator’s Manual analyzers.

Part

Number

Description

2 YR

QTY

-elbaC laireS lanretxE60171-20910

-draoB lortnoC erutarepmeT00031-20910

-ylbmessA dapyeK11003-20910

-ylbmessA yalpsiD00013-20910

-CD/CA ,esuF ,tiK11000-99120

-ylbmessA recudsnarT erusserP20171-20910

-ssaP 2 ,notiV ,)swercs ,sgnir-o( serapS , tiK50000-99120

-lleC lacitpO ,slooT gninaelC ,tiK70000-99120

2 rotarapeS enarbmeM ,gniR-O & enarbmeM39120-00016

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B

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THIS PAGE INTENTIONALLY LEFT BLANK

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xednIlaunaM s’rotarepO 0001SS –1

INDEX

Absorption 1–4, 1–5
Absorption coefficient 1–5
Absorption profile 1–5
Absorption spectrometer 1–4
Absorption spectroscopy 1–4
Accessories. See Options.
Acetone A–2
Acetone-impenetrable gloves A–3, A–4
Alarm flags 4–17
Attenuation 1–5
Background gas 3–13, 3–16
Beam path 1–5
Beer-Lambert absorption law 1–5
Cautions 1–2
Cleaning

Gas sampling lines A–2

Mirrors A–3
COM port A–14
COM properties 4–1, 4–3
Concentration 3–2, 3–5, 3–8, 3–9
Contamination 1–5, 3–16, A–1, A–2
Current loop 3–9
Current tuning 1–5
Data 1–5

Dia

gnostic 3–4, 3–5

, 4–6, 4–7
Normalized 2f 1–7
Normalized absorption 1–6
Raw 1–5

Data string 4–4
Detection levels 1–7
Detector 1–4, 1–5
Diode laser absorption spectrometer 1–4
Electrical noise A–1, A–5
Erroneous readings 2–4
Excessive sampling gas pressure A–1,

A–5, A–7

Excessive sampling gas temperature

A–1, A–5, A–7

External data logger 3–9
Faults

Null Fail 3–5, 3–15, A–11
P/T Fail 3–15, A–5, A–12
Power Fail 3–5, 3–15, A–2, A–3,

A–10

Spectrum Fail 3–5, 3–15, A–12
Track Fail 3–5, 3–15, A–5, A–13

Field-pressure reducin

g station 3–

2
Firmware version 4–16
Flowmeter 3–16
Gas leaks 2–3, 2–4, A–1, A–2, A–3

Gas sampling line A–2
Gas standard 3–15
Hardware 2–1
HyperTerminal 4–1
Import stored data into spreadsheet 4–5
Incident intensity 1–5
Initialization period 3–1
Installation 2–1
Intermediate calculation 3–5
Isopropanol A–3, A–4
Keypad 3–2, 3–3
Laser absorption spectrometer 1–5
Laser beam 1–4
Laser output fluctuations 1–5
LCD display 3–2
Leak detector 2–3, 2–4, A–2, A–3
Leaks A–1
Lens cleaning cloth A–4, A–5
Lens tissue A–3
Lock-in amplifier 1–7
Measurement

parameter

s 3–2
Measurement units 3–2
Membrane separator A–2
Microsoft Excel 4–5
Mirror contamination 1–5, 1–7, A–2, A–3
Modes

Mode 1 (Normal Mode) 3–3, 3–4,

3–7, 3–14, 3–15, 4–5, 4–14, A–7

Mode 2 (Set Parameter Mode) 3–4,

3–6, 4–4, 4–13, A–7

Mode 3 (Not Used) 3–4
Mode 3 (Set Parameter Mode -

Channel B) 4–4, 4–13, A–7

Mode 4 (System Diagnostic

Parameters - Channel A) A–6

Mode 4 (System Diagnostic

Parameters) 3–4

Mode 5 (Not Used) 3–5
Mode 5 (System Diagnostic

Parameters - Channel B) A–6

Mode 6 (Diagnostic

Data Downl

oad)

3–5, 4–4, 4–5, 4–10

Mode TEST (System Test) 3–6

National Institute of Standards and

Technology 3–16
Natural frequencies 1–5
Noise in the measurement 3–8
Optional analyzer hood 2–2
Options 1–1
Outline schematic B–4

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SS1000 Operator’s Manual

Index

– 01-92-4 A .ver 97020-000942

Output Signal

Serial output 2–5

Parameters

Calibration

C0 4–17
C1 4–17
C2 4–17
C3 4–17
Imod 3–14, 4–18
Midpoint 3–14
PA1 3–14, 4–17
PA2 3–14, 4–17
PA3 3–14, 4–17
PA4 3–14, 4–17
Phase 3–14, 4–18
PkDf 4–17
Ramp Amplitude 3–14, 4–18
RCalb 3–14, 4–17
Span 3–14
Zero Offset 3–14, 4–17

Diagnostic

Indx 3–5, 4–4, 4–17
PkD1 3–5, 3–15, 4–4, 4–16, A–6,

A–13

PkDf 3–5, 3–15, A–6, A–13
Powr 3–5, 4–17
PP2F 3–4, 4–4, 4–17
Reference Peak Index 4–4
Reference Peak Power 4–4
Reference Peak PP2F 4–4
Zero 3–5, 4–4, 4–17

Measurement and control 3–6

# Spectrum Average 3–8, 4–4,

4–17

Channel B

S Factor 3–16
S Factor Offset 3–16

Concentration Unit 3–10, 4–18
DO

Alarm Setup

4–18

Logger Rate 3–9, 4–17
Modbus Address 3–11, 4–14,

4–18

Modbus Mode 3–11, 4–1, 4–12,

4–14, 4–18

Peak Tracking 3–2, 3–9, 3–13,

3–15, 4–17, A–7

Pipeline Pressure 3–10, 4–17
Powr 4–4
Pressure Unit 3–10, 4–17
S Factor 3–8, 3–12, 3–13, 4–16
S Factor Offset 3–8, 3–12, 3–13,

4–17

Temperature Unit 3–9, 3–10,

4–17

User Analyzer ID 3–11, 4–17
User Component ID 3–12, 4–17
User Sample ID 3–12, 4–17

Password 3–6, 3–14, 4–13, 4–16, 4–18,

A–6
Peak tracking function 3–9
Port

Sample inlet 2–3

Sample return 2–4
Potential hazards 1–2
Pressure regulator 3–16
Recommendations and

solutions to

common

problems 3–15, A–1
Resonances. See Natural Frequencies
Response time 3–8
Return materials authorization (RMA)

number A–8
RS-232 Output 4–1
Sample 1–4
Sample cell 1–4, A–2
Sample cell pressure 3–2
Sample cell temperature 3–2
Sample conditioning system (SCS) 1–4
Sample gas 1–4, 1–5
Serial number 4–17
Serial port 4–4
Service contact A–8
Species concentration 1–5
Spectra

2

f 3–5, 4–10

DC 3–5
Spectral overlap 1–7
Stainless steel tubing 2–3, A–1
Symbols 1–2
System conditioning 2–4
Tools 2–1, 2–2
Tools and suppli

es A–3

Tr

ace species detection 1–4
Tunable diode laser 1–4
Units 3–9

Concentration 3–10
Pressure 3–10

Temperature 3–9
Validation 3–15
Valve

Shut-off 3–2
Variations 1–7

Pressure 1–7

Temperature 1–7
Warnings 1–2
Wavelength modulation spectroscopy

1–7

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