Spectrasensors SS2000 Operator's Manual

SS2000

Gas Analyzer

Operator’s Manual

H2S in Natural Gas

(U.S.)

Copyright © 2007 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.

SS2000

Gas Analyzer

Operator’s Manual

H2S in Natural Gas

(U.S.)

PRELIMINARY

Products of

11027 Arrow Route

Rancho Cucamonga, CA 91730

Tel: [phone]

Fax: [phone]

www.spectrasensors.com

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TABLE OF CONTENTS

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

List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii

List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .v

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3

About the Gas Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4

How the Analyzer Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4

2: Installation

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

Inspecting the Analyzer and Sample Conditioning System . . . . . . . . . . . . . . . . . 2–1

Installing the Analyzer and Sample Conditioning System . . . . . . . . . . . . . . . . . . 2–1

Hardware and Tools for Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Hardware: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Tools:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2

Mounting the Analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3

To mount the analyzer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3

Connecting Electrical Power to the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3

To connect electrical power to the analyzer: . . . . . . . . . . . . . . . . . . . . . . . . 2–4

Connecting Electrical Power to the Optional Enclosure Heater. . . . . . . . . . . . . . . 2–6

To connect electrical power to the optional enclosure heater: . . . . . . . . . . . . 2–6

Connecting Electrical Power to an Analyzer with an Optional Type X Purge. . . . . . 2–8

Connecting the Input and Output Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10

To connect the signal cables: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10

Connecting the Gas Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12

To connect the sample inlet line: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13

To connect the sample return line:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–14

Connecting the Optional Automatic Validation Gas (If Applicable) . . . . . . . . . . . 2–14

To connect the validation source: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–14

To connect the optional purge system:. . . . . . . . . . . . . . . . . . . . . . . . . . . 2–15

Conditioning the Analyzer Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16

3: Operating the SS2000 System

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3

Modes and Functions Defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4

Mode 1: (Normal Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4

Mode 2: (Set Parameter Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

Mode 3: Not Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

To change parameters in Mode 2: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

Spectrum Average . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5

High Alarm Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6

Logger Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7

Temperature Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7

SS2000 Operator’s Manual i

Pressure Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7

Concentration Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8

Peak Tracking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–8

Cancel Scrub Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–8

4/20 Alarm Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–9

Cancel General Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–9

Mode 4: (System Diagnostic Parameters - Channel A). . . . . . . . . . . . . . . 3–9

Mode 5: (System Diagnostic Parameters - Channel B). . . . . . . . . . . . . . 3–10

Mode 6: (Diagnostic Data Download) . . . . . . . . . . . . . . . . . . . . . . . . . 3–10

Scaling and Calibrating the Current Loop Signal . . . . . . . . . . . . . . . . . . . . . . . 3–10

To scale the current loop signal: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–10

Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12

Receiving Serial Data (RS-232 Output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13

To launch HyperTerminal:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–13

To capture and save data from the serial port: . . . . . . . . . . . . . . . . . . . . . 3–16

To read diagnostic data with HyperTerminal:. . . . . . . . . . . . . . . . . . . . . . . 3–16

Viewing Diagnostic Data with Microsoft Excel . . . . . . . . . . . . . . . . . . . . . . . . . 3–17

To import the data file into Excel: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–17

Validating the Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–20

Calibrating the Analyzer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–21

4: Gas Sample Conditioning System - H2S in Natural Gas

About the Sample Conditioning System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1

Operating the Sample Conditioning System. . . . . . . . . . . . . . . . . . . . . . . . .4–1

Servicing the Scrubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4–4

To Replace the Scrubber and Scrubber Indicator: . . . . . . . . . . . . . . . . . . . . 4–5

Appendix A: Troubleshooting

Gas Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–1

Contamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–1

To keep the sampling lines clean: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–1

Cleaning the Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–2

Tools and Supplies: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–2

To clean the mirrors: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–2

Excessive Sampling Gas Temperatures and Pressures . . . . . . . . . . . . . . . . . . . . A–3

Electrical Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–3

Instrument Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–4

Service Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–7

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–8

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A–8

Appendix B: Specifications

Index

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

ii H2S in Hydrogen Recycle

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. 1–7

Figure 1–4: Typical normalized 2

tional to the peak height. 1–7
Figure 2–1: AC connection terminal block in control box. 2–5
Figure 2–2: DC connection terminal block in control box. 2–6
Figure 2–3: AC connection terminal block for optional enclosure heater. 2–7
Figure 2–4: Type X enclosure purge wiring. 2–9
Figure 2–5: Mating terminal block for connecting signal cables. 2–11
Figure 2–6: SS2000 electronics control board showing s

alarm relays. 2–13
Figure 3–1: SS2000 LCD display. 3–2

Figure 3–2: SS2000/3000 Keypad. 3–3

Figure 3–3: SS2000 measurement display. 3–4
Figure 3–4: Temperature and pressure sensor cable connection. 3–11
Figure 3–5: Connection Description window. 3–14
Figure 3–6: Connect To window. 3–14
Figure 3–7: COM Properties window. 3–15
Figure 3–8: Hyperterminal window with streaming data. 3–16
Figure 3–9: Sample diagnostic data output. 3–18
Figure 3–10: Opening a data file in Excel. 3–19
Figure 3–11: Setting data type in Text Import Wizard. 3–19
Figure 3–12: Setting Tab and Space as delimiters. 3–20
Figure 3–13: Highlighting imported data for plotting in excel. 3–21
Figure 3–14: Chart Wizard - Step 1 window. 3–22
Figure 3–15: Data file plot in Excel. 3–22
Figure 3–16: Format Data Series window. 3–23

Figure 4–1: Flow schematic of SS2000 for H
Figure 4–2: Flow schematic continued of SS2000 for H

Figure 4–3: Scrubber and scrubber indicator. 4–4
Figure 4–4: Scrubber indicator showing H

Figure B–1: Outline schematic of SS2000 for H
Figure B–2: Flow schematic of SS2000 for H
Figure B–3: Electrical schematic of SS2000 for H

f signal where the species concentration is propor-

ignal terminal block and

S in natural gas. 4–2

2

S in natural gas. 4–3

2

S breakthrough. 4–5

2

S in Natural Gas. B–2

2

S in Natural Gas. B–3

2

S in Natural Gas. B–4

2

SS2000 Operator’s Manual iii

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iv H2S in Natural Gas

LIST OF TABLES

Table 2–1: Output/Input signal connections. 2–12
Table 3–1: Typical values for parameter setpoints. 3–6
Table A–1: Potential instrument problems and their solutions. A–4

Table B-1: SS2000 H

S in Natural Gas Analyzer Specifications. B–1

2

SS2000 Operator’s Manual v

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vi H2S in Natural Gas

1 - INTRODUCTION

The SpectraSensors SS2000 is a high-speed, diode-laser based extractive

analyzer designed for extremely reliable monitoring of very low (trace) to
standard concentrations of specific components in various background gases.
In order to ensure that the analyzer performs as specified, it is important to
pay close attention to the details of the installation and operation. This manual

contains a comprehensive overview of the SS2000 analyzer, and step-by-step

instructions on:

• Inspecting the Analyzer and Sample Conditioning System

• Installing the Analyzer and Sample Conditioning System

• Powering Up the Analyzer

• Operating the SS2000 System

• Receiving Serial Data (RS-232 Output)

• 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.

Because there are many options and accessories available for the SS2000, this

manual has been assembled in a modular fashion with sections addressing the
specific options and accessories ordered with this particular unit. 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.

SS2000 Operator’s Manual 1–1

Introduction

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.

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

Failure to follow all directions m a y result in fire.

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

Failure to follow all directions m a y result in damage or
malfunction of the analyzer.

Important information concerning the installation and operation
of the analyzer.

General Warnings and Cautions

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

Explosion hazard. Substitution of components may impair
suitability for Class 1, Div. 2.

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

1–2 H2S in Natural Gas

SS2000 Operator’s Manual

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 exposure 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
electricity discharge.

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

Do not hold or carry the analyzer by the measurement heads or
sample cells. Doing so may cause optical alignment problems
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.

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

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 Rancho Cucamonga,
California, SSI was incorporated in 1999 as a spin-off of the NASA/Caltech Jet

H

S in Natural Gas 1–3

2

Introduction

Propulsion Laboratory (JPL) with the purpose of commercializing space proven
measurement technologies initially developed at JPL.

Typical applications include real-time measurement of moisture, carbon dioxide
and corrosives (H

S) in natural gas, energy content of natural gas (BTU), trace

2

moisture and hydrogen sulfide in refineries and petrochemical plants, airborne
moisture and other atmospheric measurements from commercial aircraft for
Weather Services, and CO

, CO, H2, O2, H2, N2, H2S, C2H4, C2H4O, CH4, Cl2,

2

and many other species in various carrier gases for industrial process control
and EPA emissions compliance.

About the Gas Analyzer

The SS2000 is a tunable diode laser (TDL) absorption spectrometer operating

in the near- or mid-infrared. Each compact sensor consists of a TDL light
source, sample cell and detector specifically configured to enable high
sensitivity measurement of a particular component(s) without regard to 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. Typically, an appropriate
sample conditioning system is also included that assures that the analyzer is
receiving sample gas that can be correctly measured.

Each SS2000 is specifically configured for use at pipeline sampling stations,

refineries, plastics plants, or wherever accurate real-time measurements are
required over a wide measurement range. Depending on the particular
accessories and options ordered, the system may also include, for example, a
differential switching system that enables the sensor to compare the content
of the sample to a reference gas, and/or a heated enclosure for highest
sensitivity, and/or a purge system for purging flammable gasses ensuring safe
operation in hazardous environments, just to name a few.

How the Analyzer Works

The SS2000 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
detection. Because the measurement is made in the volume of the gas, the
response is much faster, more accurate and significantly more reliable than
traditional surface-based sensors that are subject to surface contamination.

In its simplest form, a diode laser absorption spectrometer typically consists of
a sample cell with a mirror at one end and a mirror or window at the 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 gas and eventually exiting the cell where the remaining

beam energy is measured by a detector. With the SS2000 analyzer, sample gas

flows continuously through the sample cell ensuring that the sample is always
representative of the flow in the main pipe.

1–4 H2S in Natural Gas

SS2000 Operator’s Manual

GAS OUT

MIRROR MIRROR

DETECTOR

I(λ)

LASER

I

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

0

(λ)

D

L

TRACE GAS ABSORPTION

α(λ)

GAS IN

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 energy, I

(λ), passes through the sample, attenuation occurs

0

via absorption by the trace gas with absorption coefficient α(λ). According to
the Beer-Lambert absorption law, the energy 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

I λ() I0λ()exp αλ()lc–[]=

,(1)

where c 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

1–

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

c

αλ()l

ln=

I λ()

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

I

λ()

0

.(2)

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

(λ), and the signal, I(λ), for a clean system

0

and one with contaminated mirrors (shown to illustrate the systems relative
insensitivity to mirror contamination). The positive slope of the raw data results
from current tuning 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 energy, any laser output fluctuations are
cancelled, and a typical, yet more pronounced, absorption 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-

H

S in Natural Gas 1–5

2

Introduction

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

resonance and normalizing the 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 the modulation frequency (2f), as shown in Figure 1–4. This phase-
sensitive 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 overlap with
background 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
CO and O

in various mixed hydrocarbon background streams, including

2

O, C2H2, H2S, NH3, CO2,

2

natural gas (alkanes), ethylene, propylene, refinery fuel gas, hydrogen
reformer gas, syngas 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.

1–6 H2S in Natural Gas

SS2000 Operator’s Manual

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

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

H

S in Natural Gas 1–7

2

Introduction

Use of ultra high reliability optical telecommunications diode lasers
(manufactured to stringent Telcordia GR 468 specifications), 316L stainless
steel, sapphire protected optical reflectors, absence of any moving parts and
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 highest reliability and
lowest total cost of ownership gas analyzer platform.

1–8 H2S in Natural Gas

2 - INSTALLATION

This section describes the processes used to initially install and configure your

SS2000. Once the analyzer arrives, you should take a few minutes to examine

the contents before installing the unit. This section discusses:

• What Should be Included in the Shipping Box

• Inspecting the Analyzer and Sample Conditioning System

What Should be Included in the Shipping Box

The contents of the crates should include:

• The SpectraSensors SS2000 with sample conditioning system (if

applicable)

• This Operator’s Manual with instructions on installing and operating

the analyzer

• One or two (if a dual-channel unit) external serial cables to connect

the analyzer to a computer to receive and transmit data

• Additional accessories or options as ordered

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

Inspecting the Analyzer and Sample Conditioning
System

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.

Each analyzer is custom configured with various accessories and options.
Confirm that you have received the correct unit. If there is any discrepancy,
please contact your sales representative.

Installing the Analyzer and Sample Conditioning
System

Installing the analyzer is relatively easy requiring only a few steps that, when
carefully followed, will ensure proper mounting and connection. This section
includes:

• Hardware and Tools for Installation

• Mounting the Analyzer

• Connecting Electrical Power to the Analyzer

• Connecting the Input and Output Signals

SS2000 Operator’s Manual 2–1

Installation

• Connecting the Gas Lines

• Powering Up the Analyzer

• Powering Down the Analyzer

Avoid jolting the instrument by dropping it or banging it against a
hard surface and do not attempt to pick up the instrument using
the sample cell as a handle as either may disturb the optical
alignment.

Hardware and Tools for Installation

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

Hardware:

• Membrane separator filter (if not included)

• Pressure regulator (if not included)

• 1/2” Unistrut

• Stainless steel tubing (SpectraSensors recommends using 1/4” O.D.

• 1/2” conduit hubs

• Conduit

• Source of plant nitrogen gas (4 SCF per hour) for purge unit(s), if

• 1/4” lag bolts or 1/4” machine screws and nuts

Tools:

• Hand drill and bits

• Tape measure

• Level

• Pencil

• Socket wrench set

• Screw driver

®

(or equivalent) bolts and spring nuts

x .035” wall thickness, welded or seamless stainless steel tubing)

applicable

• 7/16” open-end wrench

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SS2000 Operator’s Manual

Mounting the Analyzer

The SS2000 analyzer is manufactured for wall or Unistrut (or equivalent) metal

framing installations. Depending on your application and configuration, the
analyzer will come mounted on a plate or Unistrut frame. Refer to the layout
diagrams in Appendix B for detailed mounting dimensions.

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

It is critical to mount the analyzer so that the inlet and outlet lines
reach the inlet and outlet connections on the chassis while still
maintaining flexibility so that the sample lines are not under
excessive stress.

To mount the analyzer:

1. Select a suitable location to mount the analyzer. Choose a shaded
area or use an optional analyzer hood (or equivalent) to minimize
sun exposure.

SpectraSensors analyzers are designed for operation within the
specified temperature range of –4 °F to 122 °F (–20 °C to 50 °C).
Intense sun exposure in some areas may cause the analyzer
temperature to exceed the maximum.

2. Locate the mounting holes on your unit.

3. For wall installations, mark the centers of the top mounting holes.

Mounting dimensions are shown in Figure B–1 on page B–2.

4. Drill the appropriate size holes for the screws you are using.

5. Hold the analyzer in place and fasten with the top screws.

6. Repeat for the bottom mounting holes.

Once all four screws are tightened the analyzer should be very secure and
ready for the electrical connections.

Connecting Electrical Power to the Analyzer

Depending on your configuration, your analyzer will be configured for
115/240 VAC @ 50/60 Hz 1∅ input, or optionally 9-16 VDC or 18-32 VDC
input. Check the manufacturing data label, the terminal block labels, or the
specifications (see Table B-1 on page B–1) to determine the power input

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requirements. All work must be performed by technicians qualified in electrical
conduit installation.

Before attaching the wiring to the analyzer, make sure all power
to the wires is off.

Careful consideration should be tak en when grounding. Properly
ground the unit by connecting ground leads to the grounding
studs provided throughout the system that are labeled with the
ground symbol .

Depending on your configuration, the electrical wiring can typically be
connected to the analyzer through conduit hubs located at the bottom right of
the control box.

Units with an optional enclosure heater will have an additional power
connection through a conduit hub located at the bottom right of the enclosure
(see “Connecting Electrical Power to the Optional Enclosure Heater” on
page 2-6).

Units with an optional Type X purge will have one power connection via a 3/4”
NPT conduit opening on the purge controls (see “Connecting Electrical
Power to an Analyzer with an Optional Type X Purge” on page 2-8).

To connect electrical power to the analyzer:

1. Open the control box door. Take care not to disturb the electrical
assembly inside.

Failure to properly ground the analyzer can create a high-voltage
shock hazard.

2. Run conduit from the power source panel to the conduit hub nearest
the power terminal block. For analyzers in an explosion-proof
aluminum enclosure, thread the conduit directly into the enclosure
and use the supplied conduit seals as required by code.

Because the breaker or switch in the power panel will be the
primary means of disconnecting the power from the analyzer, the
power panel should be located in close proximity to the equipment
and within easy reach of the operator, or within 10 feet of the
analyzer.

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SS2000 Operator’s Manual

An approved switch or circuit-breaker rated for 15 amps should
be used and clearly marked as the disconnecting device for the
analyzer.

3. For AC systems, pull ground, neutral and hot wires into the control
box. For DC systems, pull ground, plus and minus wires.

4. Strip back the jacket and/or insulation of the wires just enough to
connect to the power terminal block.

5. For AC systems, attach the neutral and hot wires to the power
terminal block by connecting the neutral wire to the terminal marked
“NEU,” the hot wire to the terminal marked “LINE,” as shown in
Figure 2–1. For DC systems, connect the minus line to the terminal

VALVE &

ALARM

RELAYS

(if applicable)

VALVE &

ALARM

RELAYS

(if applicable)

LINE

NEU

Figure 2–1 AC connection terminal block in control
box.

marked “−,” and the positive line to the terminal marked “+,” as
shown in Figure 2–2.

6. Connect the ground wire to the ground terminal marked .

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VALVE &

ALARM

RELAYS

(if applicable)

VALVE &

ALARM

RELAYS

(if applicable)

+

_

Figure 2–2 DC connection terminal block in control
box.

Connecting Electrical Power to the Optional
Enclosure Heater

Units with an optional enclosure heater will have an additional power
connection through a conduit hub located at the bottom right of the enclosure.

To connect electrical power to the optional enclosure
heater:

1. Open the heated enclosure door. Take care not to disturb anything
inside.

Failure to properly ground the analyzer can create a high-voltage
shock hazard.

2. Open the power terminal box inside the heated enclosure, as shown
in Figure 2–3.

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