Endress+Hauser SS2100 Series User manual

Products Solutions Services
Operating Instructions
SS2100-series
TDLAS Gas Analyzer
Sample Conditioning System
BA02337C/66/EN/01.23
70214287

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Operating Instructions SS2100-series Sample Conditioning System
Table of Contents
1Introduction ........................................ 3
1.1 Document function...............................................3
1.2 Intended use .........................................................3
1.3 Symbols used ........................................................3
1.4 Standard documentation......................................5
1.5 Manufacturer address ..........................................6
1.6 Glossary.................................................................6
2Safety .................................................. 8
2.1 Personnel qualifications.......................................8
2.2 Potential risks affecting personnel ......................8
2.3 Product safety.......................................................9
2.4 Workplace safety................................................10
2.5 Operational safety ..............................................10
2.6 Lifting provisions for the analyzer.....................11
3Product description........................... 12
3.1 Sample conditioning system overview...............12
3.2 Regulators at the probe ......................................13
3.3 Filters ..................................................................13
3.4 Regulator heaters ...............................................13
3.5 Sample transport tubing.....................................14
3.6 Bypass flow control.............................................14
3.7 Pressure regulator ..............................................14
3.8 Flow controller....................................................14
3.9 Scrubber ..............................................................14
3.10 Validation systems..............................................14
3.11 Sample return and vent......................................14
3.12 SCS heaters .........................................................14
4Incoming product acceptance and
identification .................................... 15
4.1 Scope of delivery.................................................15
4.2 Checking the SCS installation.............................15
5Installation........................................ 16
5.1 Connecting electrical power............................... 16
5.2 Connecting the gas lines.................................... 19
6Starting up the SCS............................24
6.1 Starting heating components ............................ 24
6.2 Starting the field pressure reducing station...... 25
6.3 Starting the process sample............................... 25
7Validation for trace moisture (H2O)
or ammonia (NH3) systems...............27
7.1 Validation methods............................................ 27
7.2 Permeation tubes for validation of trace H2O
or NH3measurements........................................ 27
7.3 Installing the permeation tube for NH3
systems............................................................... 29
7.4 Replacing the permeation tube.......................... 29
7.5 Permeation tube storage.................................... 30
7.6 Using validation gas........................................... 30
8Sample conditioning system
maintenance......................................31
8.2 Shutting down the SCS....................................... 33
8.3 Filter maintenance............................................. 35
8.4 Replacing a fuse ................................................. 36
8.5 Mirror maintenance........................................... 36
8.6 Replacing the pressure sensor........................... 40
8.7 Scrubber maintenance for H2S systems............. 47
8.8 Replacing the dryer for H2O and NH3systems .. 50
8.9 Heat trace sleeve bundle.................................... 50
9Instrument troubleshooting .............51
9.1 Warnings and errors.......................................... 51
9.2 Troubleshooting symptoms ............................... 52
10 Service................................................53
10.1 Packing, shipment, and storage ........................ 53
10.2 Service................................................................. 54
10.3 Disclaimers ......................................................... 54
10.4 Warranty ............................................................ 54

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SS2100-series Sample Conditioning System Operating Instructions
1Introduction
1.1 Document function
This operating instruction provides an overview of the SS2100-series TDLAS Gas Analyzer sample conditioning
system (SCS), including the use of components, operation, and maintenance of the device, as well as troubleshooting
procedures. It is important to closely review the sections of this manual to ensure the SCS performs as specified.
1.2 Intended use
Endress+Hauser’s SS2100-series products are high-speed, diode laser-based extractive analyzers designed for
extremely reliable monitoring of very low (trace) to standard concentrations of specific components in a variety of
background gases.
Use of the device for any purpose other than that described poses a threat to the safety of people and of the entire
measuring system and is therefore not permitted. The manufacturer is not liable for damage caused by improper or
non-designated use.
1.2.1 How to use this manual
There are many options and accessories available for SS2100-series sample conditioning systems (SCS). This manual
has been written to address the most common options and accessories. Images, tables, and charts have been included
to provide a visual understanding of the SCS and its functions. Special symbols are also used to provide the user with
key information regarding the system configuration and operation. Pay close attention to this information.
1.3 Symbols used
1.3.1 Warnings
Structure of Information
Meaning
WARNING
Causes (/consequences)
Consequences of non-compliance (if applicable)
‣ Corrective action
This symbol alerts you to a dangerous situation. Failure to avoid the dangerous
situation can result in a fatal or serious injury.
CAUTION
Causes (/consequences)
Consequences of non-compliance (if applicable)
‣ Corrective action
This symbol alerts you to a dangerous situation. Failure to avoid this situation
can result in minor or more serious injuries.
NOTICE
Cause/situation
Consequences of non-compliance (if applicable)
‣ Action/note
This symbol alerts you to situations which may result in damage to property.
1.3.2 Safety symbols
Symbol
Description
Hazardous voltage and risk of electric shock.
INVISIBLE LASER RADIATION - Avoid exposure to the beam. Class 3R Radiation Product. Refer servicing to
manufacturer-qualified personnel.

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Operating Instructions SS2100-series Sample Conditioning System
1.3.3 Informational symbols
Symbol
Meaning
Tip: Indicates additional information.
Reference to documentation
Reference to page
Reference to graphic
Notice or individual step to be observed
1., 2., 3. … Series of steps
Result of a step
1.3.4 Symbols on this device
Symbol
Description
The warning label will be affixed to the front side of all analyzer enclosures that contain sample gas.
Hazards may vary by stream composition. One or more of the following conditions may apply:
Flammable. Gases used in the processing of this analyzer may be extremely flammable. Any work in
a hazardous area must be carefully controlled to avoid creating any possible ignition sources (e.g.,
heat, arcing, sparking, etc.).
Toxins. Endress+Hauser analyzers measure a variety of gases, including high-level H2S. Follow all
safety protocols governing toxic gases and potential leaks.
Inhalation. Inhaling toxic gases or fumes may cause physical damage or death.
Technicians are expected to follow all safety protocols established by the customer that are necessary
for servicing or operating the analyzer. This may include, but is not limited to, lockout, tagout
procedures, toxic gas monitoring protocols, personal protective equipment (PPE) requirements, hot
work permits and other precautions that address safety concerns related to performing service or
operation on process equipment located in hazardous areas.
The High Voltage symbol alerts people to the presence of electric potential large enough to cause
injury or damage. In certain industries, high voltage refers to voltage above a certain threshold.
Equipment and conductors that carry high voltage warrant special safety requirements and
procedures. Turn off and lock out system before servicing.
Maximum voltage and current specifications for the fuse closest to label.

PROTECTIVE EARTH GROUND — Symbol indicates the connection point of the ground wire from the
main power source.
FUNCTIONAL EARTH GROUND — Symbol indicates grounding points intended primarily for
troubleshooting.
INVISIBLE LASER RADIATION — Avoid exposure to beam. Class 3B Radiation Product. Refer servicing
to the manufacturer or qualified personnel.
Removing label from measurement cell optical head will void analyzer warranty.
CAUTION
CLASS 3B INVISIBLE LASER
RADI ATION WHEN OPEN
AVOID EXPOSURE TOTHE BEAM

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SS2100-series Sample Conditioning System Operating Instructions
1.4 Standard documentation
All documentation is available:
•On the USB provided with the analyzer
•Endress+Hauser’s website: www.endress.com
Each analyzer shipped from the factory is packaged with documents specific to the model that was purchased. This
document is an integral part of the complete document package, which also includes:
Part Number
Document Type
Description
Technical Information
TI01667C
SS2100 Technical
Information
Planning aid for your device. This document contains information for the analyzer
including system design with sample conditioning components and inlet/outlet
points, certificates and approvals, and product technical data.
TI01669C
SS2100i-1 Technical
Information
Planning aid for your device. This document contains information for the analyzer
including system design with sample conditioning components and inlet/outlet
points, certificates and approvals, and product technical data.
TI01670C
SS2100i-2 Technical
Information
Planning aid for your device. This document contains information for the analyzer
including system design with sample conditioning components and inlet/outlet
points, certificates and approvals, and product technical data.
TI01668C
SS2100a Technical
Information
Planning aid for your device. This document contains information for the analyzer
including system design with sample conditioning components and inlet/outlet
points, certificates and approvals, and product technical data.
Safety Instructions
XA02750C
SS2100 Safety
Instructions
Requirements for installing or operating the SS2100 TDLAS Gas Analyzer related
to personnel or equipment safety.
XA02751C
2-pack and 3-pack
Safety Instructions
Safety Instructions for the SS2100 2-pack and 3-pack TDLAS Gas Analyzer for
multiple analytes.
XA02687C
SS2100i-1 Safety
Instructions
Requirements for installing or operating the SS2100i-1 TDLAS Gas Analyzer
related to personnel or equipment safety.
XA02694C
SS2100i-2 Safety
Instructions
Requirements for installing or operating the SS2100i-2 TDLAS Gas Analyzer
related to personnel or equipment safety.
XA03100C
SS2100i-2 Safety
Instructions (INMETRO)
Requirements for installing or operating the INMETRO-certified SS2100i-2 TDLAS
Gas Analyzer related to personnel or equipment safety.
XA03101C
SS2100i-1 Safety
Instructions (INMETRO)
Requirements for installing or operating the INMETRO-certified SS2100i-1 TDLAS
Gas Analyzer related to personnel or equipment safety.
XA02782C
SS2100a Safety
Instructions
Requirements for installing or operating the SS2100a TDLAS Gas Analyzer related
to personnel or equipment safety.
Operating Instructions
BA02281C
SS2100 Operating
Instructions
Provides a comprehensive overview of the SS2100 analyzer and step-by-step
installation instructions.
BA02189C
SS2100i-1 Operating
Instructions
Provides a comprehensive overview of the SS2100i-1 analyzer and step-by-step
installation instructions.
BA02197C
SS2100i-2 Operating
Instructions
Provides a comprehensive overview of the SS2100i-2 analyzer and step-by-step
installation instructions.
BA02163C
SS2100a Operating
Instructions
Provides a comprehensive overview of the SS2100a analyzer and step-by-step
installation instructions.
Device Parameters
GP01177C Description of Device
Parameters FS 5.16
Provides the user with an overview of the FS 5.16 firmware functionality.
GP01180C
Description of Device
Parameters NS 5.14
Provides the user with an overview of the NS 5.14 firmware functionality.
GP01181C Description of Device
Parameters HC12
Provides the user with an overview of the PP2f (HC12) firmware functionality.

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Operating Instructions SS2100-series Sample Conditioning System
For additional instruction manuals, refer to the Endress+Hauser website, www.endress.com,to download the
published documentation.
To determine which Description of Device Parameters applies to your analyzer, refer to the following product-
firmware matrix.
TDLAS Analyzer Model
PP2f (HC12) firmware
FS firmware
NS firmware
SS2100, SS2100a,
SS2100i-1, SS2100i-2
Not applicable Applies to trace measurement
(differential) analyzers
Applies to non-differential
analyzers
SS2100 2- and 3-pack Applies to non-differential
analyzer electronics (right-
side)
Applies to trace measurement
(differential) analyzer
electronics (left-side)
Not applicable
SS500, SS2000
Applies to all analyzers
Not applicable
Not applicable
1.5 Manufacturer address
Endress+Hauser
11027 Arrow Route
Rancho Cucamonga, CA 91730
United States
www.endress.com
1.6 Glossary
Term
Description
2-wire
In a 2-wire current loop, the transmitter, DC power supply, and PLC are connected in series. Not only are
the 2 wires providing power for the transmitter, but they are also the signal lines.
4-20 mA
An analog current loop for process control applications, used to carry signals from process
instrumentation to PID controllers, SCADA systems, and programmable logic controllers (PLCs). They are
also used to transmit controller outputs to the modulating field devices such as control valves.
Acceptance testing
A test conducted to determine if the requirements of a specification or contract are met. It may involve
chemical tests, physical tests, or performance tests.
Analyte
A substance whose chemical constituents are being identified and measured.
Bend radius (BR)
The minimum radius one can bend a pipe, tube, sheet, cable or hose without kinking it, damaging it, or
shortening its life.
Calibration
A process in which a known amount of various gases are used to produce an accurate analyte reading.
Capacitance The ratio of the change in electric charge of a system to the corresponding change in its electric potential.
Connectorization
An electrical connector for terminating a shielded cable and connecting the cable to regularly arranged
contact pins.
CW laser Continuous wave laser, as opposed to a pulsed laser, have an uninterrupted beam that gives a nominally
constant output over a set interval.
Density
The mass of a substance is its mass per unit volume.
Differential
TDLAS technology based on subtracting one spectrum from another. A dry spectrum, the response from a
sample when the analyte of interest has been completely removed, is subtracted from the wet spectrum,
the response from the sample when the analyte is present. The remainder is a spectrum of the pure
analyte.
Divert valve
A divert valve is located between a chromatograph (gas or liquid) and the source of a mass spectrometer,
and acts to either allow the flow from the chromatograph to enter the source or not.
Input/output (I/O) The communication between an information processing system, such as a computer, and the outside
world, possibly a human or another information processing system. Inputs are the signals or data
received by the system and outputs are the signals or data sent from it.
Ion Atomic, molecular, or radical species with a non-zero net electric charge.
Laser
A device that emits light through a process of optical amplification based on the stimulated emission of
electromagnetic radiation.

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SS2100-series Sample Conditioning System Operating Instructions
Term
Description
Lockout, tagout Proper lockout, tagout (LOTO) practices and procedures safeguard workers from hazardous energy
releases. OSHA's Lockout, Tagout Fact sheet describes the practices and procedures necessary to disable
machinery or equipment to prevent hazardous energy release. The OSHA standard for The Control of
Hazardous Energy (Lockout, Tagout) (29 CFR 1910.147) for general industry outlines measures for
controlling different types of hazardous energy. The LOTO standard establishes the employer's
responsibility to protect workers from hazardous energy. Employers are also required to train each
worker to ensure that they know, understand, and can follow the applicable provisions of the hazardous
energy control procedures.
Non-differential
TDLAS technology in which TDL spectroscopy measurements are made directly from the sample.
Permeation tube
(perm tube)
A sealed cylinder of a permeable material with an analyte of interest inside. The analyte slowly
permeates through the walls of the tube at a rate governed by temperature and tube geometry.
Permeation tubes (perm tubes) are a preferred method for delivering precise concentrations from ppb to
high ppm.
Probe A physical device used to connect electronic test equipment to items under test.
Relay
An electrically operated switch consisting of a set of input terminals for a single or multiple control
signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple
contact forms, such as make contacts, break contacts, or combinations thereof.
Spectrometer
A scientific instrument used to separate and measure spectral components of a physical phenomenon.
Spectroscopy A study of the absorption and emission of light and other radiation by matter, as related to the
dependence of these processes on the wavelength of the radiation.
Stream composition
The makeup of the materials within a specific stream.
Vent to atmosphere The intentional and controlled release of gases containing alkane hydrocarbons -
predominately methane
- into earth's atmosphere.
Vent to flare
(flaring)
The controlled burning that takes place during production and processing of gas.
Wavelength
The spatial period of a periodic wave. The distance over which the wave's shape repeats.
Wavelength
modulation
spectroscopy (WMS)
A derivative form of absorption spectroscopy that has been increasingly applied for measurements in
harsh environments due to its improved sensitivity and noise-
rejection capabilities over direct absorption.
Used by TDLAS analyzers.

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Operating Instructions SS2100-series Sample Conditioning System
2Safety
Each analyzer shipped from the factory includes safety instructions and documentation to the responsible party or
operator of the equipment for the purpose of installation and maintenance. This manual should be read and
referenced by anyone installing, operating, or having direct contact with the analyzer.
Technicians are expected to be trained and follow all safety protocols that have been established by the
customer in accordance with the area hazard classification to service or operate the analyzer.
This may include, but is not limited to, toxic and flammable gas monitoring protocols, lockout, tagout procedures,
the use of PPE requirements, hot work permits and other precautions that address safety concerns related to the
use and operation of process equipment located in hazardous areas.
2.1 Personnel qualifications
Personnel must meet the following conditions for mounting, electrical installation, commissioning, and maintenance
of the device. This includes, but is not limited to:
•Be suitably qualified for their role and the tasks they perform:
•Installation, commissioning, operation, and maintenance of the measuring system may be carried out only by
specially trained technical personnel.
•Technical personnel must be authorized by the plant operator to carry out the specified activities. Technical
personnel must have read and understood these Operating Instructions and must follow the instructions
contained herein.
•Electrical connections may be performed only by an electrical technician.
•Be trained in explosion protection.
•Be familiar with national and local regulations and guidelines (e.g., CEC, NEC ATEX/IECEx, or UKEX).
•Be familiar with lockout, tagout procedures, toxic gas monitoring protocols, and PPE requirements.
•Faults at the measuring point may only be rectified by authorized and specially trained personnel.
WARNING
Substitution of components is not permitted.
Substitution of components may impair intrinsic safety.
Repairs not described in the Operating Instructions provided must be carried out only directly at the
manufacturer's site or by the service organization.
2.2 Potential risks affecting personnel
This section addresses the appropriate actions to undertake when faced with hazardous situations during or before
service of the analyzer. It is not possible to list all potential hazards within this document. The user is responsible for
identifying and mitigating any potential hazards present when servicing the analyzer.
2.2.1 Exposure to process gas
1. Shut off the process gas to the analyzer before any service that would require opening a part of the sample
plumbing.
2. Purge the system with nitrogen.
3. Shut off the nitrogen purge before opening any part of the sample system.
2.2.2 Exposure to toxic gas (H2S)
Use the following procedure if the SCS included a safety purge kit as ordered. If there has been any suspected leak
from the sample system and accumulated SCS enclosure, do the following:
1. Purge the SCS enclosure to remove any potentially toxic gas.
2. Test the H2S levels of the SCS enclosure using the port from the safety purge kit to ensure the purge has cleared
any toxic gas.
3. If no gas leak is detected, open the SCS enclosure door.

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SS2100-series Sample Conditioning System Operating Instructions
If the SCS was not purchased with a safety purge, purging enclosure as explained in the above procedure is not
possible. Instead, purchase a portable or fixed H2S detector and test at the breather drain or open the enclosure with
the detector at hand to determine if there is a leak.
CAUTION
Follow all safety protocols governing toxic gases and potential leaks.
2.2.3 Electrocution hazard
1. Shut off power at the main disconnect external to the analyzer.
WARNING
Complete this action before performing any service that requires working near the main input power or
disconnecting any wiring or other electrical components.
If service must be performed with power engaged (gain adjustment, etc.), note any live electrical components
and avoid all contact with them.
2. Only use tools with a safety rating for protection against accidental contact with voltage up to 1000V (IEC 900,
ASTF-F1505-04, VDE 0682/201).
2.2.4 Laser safety
The Endress+Hauser TDLAS Gas Analyzer is a Class 1 laser product, which poses no threat to equipment operators.
The laser internal to the analyzer controller is classified Class 3B and could cause eye damage if the beam is viewed
directly.
WARNING
Before servicing, shut off all power to the analyzer.
2.2.5 Explosion hazard
Any work in a hazardous area must be carefully controlled to avoid creating any ignition sources (e.g., heat, arcing,
sparking, etc.). All tools must be appropriate for the area and hazards present. Electrical connections must not be
made or broken with power on (to avoid arcing).
2.3 Product safety
The Endress+Hauser sample conditioning system is designed in accordance with good engineering practice to meet
state-of-the-art safety requirements, has been tested, and left the factory in a condition in which it is safe to operate.
It meets general safety standards and legal requirements. It also complies with the EU directives listed in the specific
EU Declaration of Conformity. Endress+Hauser confirms this by affixing the CE mark to the analyzer system.
2.3.1 General
•Adhere to all warning labels to prevent damage to the unit.
•Do not operate the device outside the specified electrical, thermal and mechanical parameters.
•Only use the device in media to which the wetted materials have sufficient durability.
•Modifications to the device can affect the explosion protection and must be carried out by staff authorized to
perform such work by Endress+Hauser.
•Install the controller circuit wiring according to the Canadian Electrical Code (CEC) respective National Electrical
Code (NEC) using threaded conduit or other wiring methods in accordance with NEC articles 501 to 505, or IEC
60079-14.
•Install the device according to the manufacturer’s instructions and regulations.
•The flameproof joints of this equipment are outside the minimums specified in IEC/EN 60079-1 and shall not be
repaired by the user.

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Operating Instructions SS2100-series Sample Conditioning System
Only open the controller cover if the following conditions are met
•An explosive atmosphere is not present.
•All device technical data is observed (see nameplate).
•An electrostatic charge (e.g., caused by friction, cleaning or maintenance) is avoided on the attached stainless
steel nameplate, if present, and on painted metallic housings that are not integrated into the local potential
equalization (ground) system.
In potentially explosive atmospheres
•Do not disconnect any electrical connections while the equipment is energized.
•Do not open the connection compartment cover when energized or the area is known to be hazardous.
2.3.2 General pressure
The system is designed and tested with appropriate margins to ensure that is it safe under normal operating
conditions, which include temperature, pressure, and gas content. The operator is responsible for ensuring that the
system is shut off when these conditions are no longer valid.
2.3.3 Electrostatic discharge
The coating and the adhesive label are non-conducting and may generate an ignition capable level of electrostatic
discharge under certain extreme conditions. The user should ensure that the equipment is not installed in a location
where it may be subjected to external conditions, such as high-pressure steam, which may cause a build-up of
electrostatic charges on non-conducting surfaces. To clean the equipment, use only a damp cloth.
2.3.4 Chemical compatibility
Never use vinyl acetate or acetone or other organic solvents to clean the analyzer housing or labels.
2.3.5 Canadian Registration Number
In addition to the requirements above for general pressure safety, Canadian Registration Number (CRN) systems
must be maintained using CRN approved components without any modification to the sample conditioning system
(SCS) or analyzer.
2.4 Workplace safety
As the user, you are responsible for complying with the following safety conditions:
•Installation guidelines
•Local standards and regulations
•Regulations for explosion protection
It is not possible to list all potential hazards within this document. The user is responsible for identifying and
mitigating any potential hazards present when servicing the analyzer.
Technicians are expected to follow all safety protocols established by the customer that are necessary for servicing
the analyzer. This may include, but is not limited to lockout, tagout procedures, toxic gas monitoring protocols, PPE
requirements, hot work permits, and other precautions that address safety concerns related to performing service on
process equipment located in hazardous areas.
2.5 Operational safety
Before commissioning the entire measuring point
1. Verify that all connections are correct.
2. Ensure that electrical cables and hose connections are undamaged.
3. Do not operate damaged products. Protect them against unintentional operation.
4. Label damaged products as defective.

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SS2100-series Sample Conditioning System Operating Instructions
During operation
1. If faults cannot be rectified, products must be taken out of service and protected against unintentional operation.
2. Keep the door closed when not carrying out service and maintenance work.
2.6 Lifting provisions for the analyzer
Due to the analyzer’s size and weight, the use of a forklift, pallet jack, etc. to lift or move the analyzer is
recommended. If the analyzer is to be lifted by hand, designate multiple individuals and distribute the weight among
personnel to avoid injury.
Before removing from the crate, move the analyzer as close as possible to the final installation location. Never lift the
analyzer by the electronics enclosure. Always carry the load using one of the following points or methods. Refer to
Mounting the analyzer in the Operating Instructions for more information. See Standard documentation →for the
Operating Instructions related to your analyzer.
•Mounting points
•Support beneath instrument (best used when employing a forklift)
CAUTION
Always use a lifting truck or a forklift to transport the analyzer. Two people are needed for the installation.
Ensure all equipment used for lifting and moving the analyzer is rated for the weight load.
Lift the device by the recessed grips.

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Operating Instructions SS2100-series Sample Conditioning System
3Product description
The sample conditioning system (SCS) is designed to deliver a vapor sample to the analyzer that is free of
particulates and liquids, and is representative of the process at the time of sampling. The SCS also delivers the
sample at optimal temperature, pressure, and flow rate to the measurement cell. To ensure the integrity of the
sample stream and its analysis, care must be taken to install and operate the SCS properly. Therefore, any personnel
operating or maintaining the analyzer must have a thorough understanding of the design and function of the SCS.
WARNING
The process sample at the sample tap may be at a high pressure.
A pressure reducing regulator is located at the sample tap to reduce the sample pressure and allow operation of
the sample conditioning system at a low pressure.
Use extreme caution when operating the sample probe isolation valve and field pressure reducing regulator.
Personnel should have a thorough understanding of the operation of the analyzer and the procedures presented
here before operating the SCS.
Process upsets, unknown or unexpectedly high concentrations of liquids or particulate contaminants, and high or low
pressures or temperatures can cause excessive maintenance, failure of the SCS, or damage to the measurement cell.
By understanding the function and limitations of each component in the SCS and performing regular monitoring of
the system function, most problems can be avoided or diagnosed and corrected to ensure normal operation.
CAUTION
Process samples may contain hazardous material in potentially flammable and 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.
3.1 Sample conditioning system overview
Endress+Hauser TDLAS gas analyzers are designed for extractive sampling rather than in situ applications. This
allows for filtration, temperature, pressure, and flow control of the sample to protect the optical components of the
system, and provides for ease of maintenance without shutting down the process.
Components used in the SCS are described in this section. Please refer to as-built drawings for system drawings of
your analyzer configuration. If there are any remaining questions concerning the design, operation, or maintenance
of the SCS, contact Service →.
Endress+Hauser sample conditioning systems are designed to filter incoming gas, as well as control pressure and
flow to the analyzer. The SCS uses a 7-micron particulate filter and a membrane separator that removes entrained
liquids or particles from the natural gas stream before they enter the analyzer. Because Endress+Hauser analyzers
are immune to vapor phase contaminants found in natural gas, using the particulate filter and membrane separator
prevents any contamination of the analyzer.
The membrane separator is a three-port device operating on most analyzers except those for trace moisture and
ammonia. When gas enters the separator inlet, only the vapors will pass through the membrane to the outlet. The
outlet flow passes through a flow control valve and a flow meter to the analyzer. Blocked liquids or particles can be
flushed from the separator housing out the bypass port.
If the correct probe and regulator is used at the sample extraction point, and the sample transport line is heated to
prevent condensation, no liquids or particles should reach the SCS. Under normal conditions, the membrane
separator will remove very little liquid, if any. The main purpose of the separator will be to protect the analyzer in the
case of an upset condition.
Besides filtering the incoming gas, the SCS is also responsible for controlling flow and pressure to the analyzer. An
instrument-grade pressure regulator is used to set the final pressure of the gas before it enters the analyzer. There is
one flow meter for the flow path to the analyzer and one flow meter for the flow path of the bypass. The flow meters
have a built-in controller to set flow rates to the recommended values (see Specifications in the Operating
Instructions → for flow and pressure settings).

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SS2100-series Sample Conditioning System Operating Instructions
Typically, the SCS is assembled inside a stainless steel enclosure which is insulated and heated using a temperature
controller. This ensures that the sample remains in a stable vapor phase and improves the measurement
performance.
In some cases, additional components are included in the SCS, depending on the application, such as coalescing
filters, liquid knockouts, pumps, and heaters. Refer to your as-built drawings for an overview of your system
configuration.
3.2 Regulators at the probe
The pressure of the sample gas is reduced at the sample probe, or sometimes reduced in the probe itself, to minimize
transport lag time in sample delivery to the analyzer. A guard filter is used to protect the regulator from larger
particulates in the sample.
Refer to the following diagram showing the interface of the probe and the analyzer system. The analyzer system
provided by Endress+Hauser is represented by the blue dashed outline. The probe and field pressure reducing station
may also be supplied by Endress+Hauser but these are separate from the analyzer system.
A0054916
Figure 1. Sample regulators at probe
1. Heated enclosure 4. Regulator
2. Endress+Hauser TDLAS Gas Analyzer 5. Probe
3. Heat trace
3.3 Filters
A guard filter is typically installed at the inlet to the SCS with a fine element to protect the flow controllers, flow
meters and pressure regulators from fine particulates.
A bypass filter with a fritted metal, glass fiber, or polymetric membrane filter may also be in place to remove larger
quantities of particulates or entrained liquids and mists. Some filters may fit with liquid knock-out traps to protect
the system from free liquids.
Accumulation of liquids in these filters, or a steady flow of liquid from a liquid knock-out trap, should be investigated
and corrected immediately as this is an abnormal condition.
3.4 Regulator heaters
In most applications, the process sample is at high pressure. When the pressure is reduced, the sample cools due to
the Joule-Thompson effect. The amount of cooling varies depending on the application, but oftentimes must be offset
using a heated sample regulator to prevent condensation of some sample components. Sample probe regulators can
be electrically or steam heated. Some probes have the pressure reducing valve parts inserted into the process piping,
so that the Joule-Thompson cooling is offset by warming from the flowing sample. Note that for these probes to work
correctly, the process gas must be flowing anytime the sample is flowing, or liquid condensation may collect in the
sample transport line, or even freeze up the sample probe regulator. Refer to the as-built drawings for the proper
regulator pressure setting.
1
1 3 2
4
5

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Operating Instructions SS2100-series Sample Conditioning System
3.5 Sample transport tubing
Sample transport tubing must be made of an appropriate material, which may be coated, and of an appropriate
diameter for the application. The sample transport tubing may be heat-traced to prevent sample condensation or to
prevent fluctuations in measurement due to changes in ambient temperature.
3.6 Bypass flow control
A sample flow control valve and flow meter are provided to maintain a flow of fresh sample to the SCS even during
system shutdown. The flow control valve is a needle valve and should be closed gently if used to shut off flow
completely, to avoid damaging the valve. If the bypass flow meter has a glass tube, perform an occasional check for
evidence of liquid in the tube. If liquid is found in the bypass or sample cell flow meter tubes, investigate and correct
immediately.
3.7 Pressure regulator
All Endress+Hauser TDL cells are limited to a maximum 0.7 barg (10 psig) pressure. To ensure that this pressure is
not exceeded, a pressure regulator is provided inside the sample system.
3.8 Flow controller
A sample flow controller is provided with the SCS in which a flow control needle valve and flow meter similar to the
sample bypass are used. In some cases, a differential flow controller is used. As with the bypass flow control valve, if
the flow control needle valve and flow meter must be used for sample shut-off, close the valve gently to avoid
damage.
3.9 Scrubber
All trace measurement applications require the use of a scrubber. The scrubber is switched into the flowing sample
going to the measurement cell to remove the trace moisture component. A spectrum of the sample gas that is free of
H2O is acquired and saved in the analyzer controller memory. This is the “dry” spectrum. The scrubber is then
bypassed, and the sample spectrum is acquired with H2O in the sample. This is the “wet” spectrum. The analyzer
controller subtracts the dry spectrum from the wet spectrum and the concentration of trace moisture is measured.
The same dry spectrum may be used for 10 to 30 minutes, depending on the controller’s program, before a new dry
spectrum is acquired.
The automatic valves that control switching the sample stream into the scrubber or bypassing the scrubber are
pneumatically operated valves.
3.10 Validation systems
System validation is accomplished in the SCS using a permeation device. Refer to Validation for trace moisture (H2O)
or ammonia (NH3) systems →.
3.11 Sample return and vent
Tunable diode laser spectroscopy is inherently sensitive to sample pressure in the measurement cell, so all
Endress+Hauser analyzers are calibrated for a range of sample pressures. Most applications benefit from operation
at low pressures instead of high pressures. Sometimes the analyzer is designed to vent the sample to atmosphere, or
an atmospheric pressure return system. Return to a flare or other sample return must recognize the pressure
limitations of the cell and the calibration of the analyzer.
3.12 SCS heaters
Differential analyzers have heated SCS enclosures to avoid condensation of sample components. For these trace
measurement systems, temperature stability of the SCS is critical to the measurement. Precise temperature control is
accomplished with a PID temperature controller, which maintains close tolerance on the system’s temperature.

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SS2100-series Sample Conditioning System Operating Instructions
4Incoming product acceptance and identification
Once the analyzer arrives, you should take a few minutes to examine the contents of the container before installing.
4.1 Scope of delivery
The contents of the crates include:
•The Endress+Hauser SS2100-series analyzer and sample conditioning system
•Applicable SS2100-series Safety Instruction
•External serial cable(s) to connect the analyzers to a computer to receive and transmit data
•Additional accessories or options as ordered
If any of these contents are missing, refer to Service →.
4.2 Checking the SCS installation
The integral SCS is factory set with the appropriate pressures, flow rates, and enclosure temperature, as indicated in
the as-built drawings. However, before operating the system for the first time, a careful check of the installation of
the entire SCS from the sample probe to the flare or vent is recommended. Purging the transport line to confirm that
no dust, particulates, or liquids were trapped during installation is recommended.
To perform SCS installation checks, confirm the following:
All valves are closed, and all switches are off.
The following conditions for electrical power are met:
•Power is available to the analyzer, SCS, and heat-traced sample tubing (if applicable)
•Local switches are off.
•Field analog and alarm signal wiring is interconnected properly. See Connecting signals and alarms in the
Operating Instructions →.
All sample system tubing has been thoroughly leak checked.
The heat-traced sample transport tubing is installed correctly:
•There is no exposed tubing or pockets.
•Tubing is terminated properly at each end.
•Tubing has been purged clean and pressure tested.
The following conditions for a flare or vents are met:
•(If applicable) The low-pressure flare or atmospheric vent is properly connected.
In some applications, vents from the SCS (relief vent, bypass vent, and cell vent) can have individual
¼” tubing connections. These vents should be routed to an atmospheric vent or low-pressure flare
header.
In other applications, these SCS vents are routed to a common ½” tubing connection within the sample
conditioning system. This common vent should be routed to an atmospheric vent or low-pressure flare
header.
•The analyzer house atmospheric vent is properly installed.
An optional sample probe or field pressure reducing station may be provided by Endress+Hauser or through a
third party. This is not included in a standard configuration.
If a sample probe is used with the analyzer, the sample probe is correctly installed at the process supply tap and
that the sample probe isolation valve is closed.
The following conditions for a field pressure reducing station are met:
•The field pressure reducing station is installed properly at the sample probe.
•The relief valve at the field pressure reducing station has been set to the specified setpoint. The relief valve
is located on the pressure reducing regulator at the process sample tap.
Although the relief valve has been preset at the factory, the setpoint must be confirmed prior to
operation of the sample system. To confirm the relief valve setting, refer to Relief valve setting →.
•The relief valve vent line is properly installed from the field pressure reducing station or the SCS to the low-
pressure flare or atmospheric connection. Route a ¼” tube from the relief valve vent to an atmospheric vent
or low-pressure flare vent.
If applicable, the sample probe and field pressure reducing station are properly heat-traced and insulated
without any exposed surfaces.

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Operating Instructions SS2100-series Sample Conditioning System
5Installation
This chapter describes the procedure to mount and install your SS2100 analyzer. For installation instructions related
to the SS2100-series TDLAS gas analyzers, and for system programming and operation information, refer to the
Operating Instructions and Description of Device Parameters, respectively. See Standard documentation → for
specific manuals related to your instrument.
Installing the sample conditioning system requires steps that when carefully followed ensure proper connection. The
steps are outlined in the following sections:
•Connecting electrical power to the sample conditioning system
•Connecting the gas lines to the sample conditioning system
For instructions on mounting the sample conditioning system, refer to Mounting the analyzer in the Operating
Instructions →.
CAUTION
The safety of the analyzer is the responsibility of the installer and the organization they represent.
Incorrect transportation can cause injury and damage the device.
Always use a lifting truck or a forklift to transport the analyzer. Two people are needed for the installation.
Ensure all equipment used for lifting/moving the sample conditioning system and analyzer are rated for the
weight load.
Lift the device by the recessed grips.
5.1 Connecting electrical power
Depending on your configuration, your analyzer will be configured for 120 VAC or 240 VAC at 50/60 Hz single-phase
input, or optional 24 VDC input. Check the rating label to determine the power input requirements.
Units with an enclosure heater have an additional power connection through a conduit hub located at the bottom
right of the sample conditioning system heated enclosure. Refer to your as-built drawings. Refer to Connecting
electrical power to the analyzer in the Operating Instructions →for instructions on connecting power to the
SS2100-series TDLAS gas analyzers.
Before connecting electrical power, review and follow all warnings and cautions.
CAUTION
Interconnection of the analyzer enclosure and sample system enclosure shall be accomplished using wiring
methods approved for Class 1, Division 2 hazardous locations as per the Canadian Electrical Code (CEC)
Appendix J and the National Electric Code (NEC) Article 501, or methods described in the Standard IEC/EN
60079-0 and IEC/EN 60079-14.
The installer is responsible for complying with all local installation codes.
Certified glands and cables should be used where appropriate in compliance with local regulations.
Endress+Hauser Class I Division 2 analyzers use a non-incendive protection method, and as such all portions
of the local installation codes apply.
The maximum allowed inductance to resistance ratio (L/R ratio) for the field wiring interface must be less than
25 µH/Ω. The maximum total loop capacitance shall be 0.27 microfarads.
An approved switch or circuit breaker rated for 15 amps should be used and clearly marked as the disconnecting
device for the analyzer.
The power distribution panel or switch should be near the equipment and within easy reach of the operator. A
switch or circuit breaker shall not interrupt a protective earth ground.
All electrical work must be performed by qualified personnel.
5.1.1 Protective chassis and ground connections
Before connecting any electrical signal or power, the protective and chassis grounds must be connected.
Requirements for the protective and chassis grounds are as follows:
•Protective and chassis grounds must be of equal or greater size than any other current-carrying conductors,
including the heater located in the sample conditioning system.

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SS2100-series Sample Conditioning System Operating Instructions
•Protective and chassis grounds must remain connected until all other wiring is removed.
•Insulated protective and chassis ground wiring must use the green and yellow color.
•Protective grounding wire current carrying capacity must be at minimum the same as the main supply.
•Earth bonding/chassis ground shall be at least 12 AWG (4 mm2).
Green-and-yellow insulation shall only be used for:
•Protective earth conductors
•Protective bonding conductors
•Potential equalization conductors for safety purposes
•Functional earth
WARNING
Failure to properly ground the system may create a high-voltage shock hazard.
Careful consideration should be taken 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 .
Refer to your as-built drawings for grounding locations.
5.1.2 Connecting power to the SCS heater
WARNING
Hazardous voltage and risk of electric shock.
Failure to properly ground the analyzer may create a high-voltage shock hazard.
Conduit seals should be used where appropriate, and in compliance with local regulations.
CAUTION
Ensure that power requirements listed on the heater match the power supplied.
If there is a discrepancy, notify the local authority before connecting power to the heater.
To connect electrical power to the enclosure heater
1. Open the SCS enclosure door.
2. Open the power terminal box inside the SCS enclosure, as shown below.
A0054917
Figure 2. AC connection terminal block for enclosure heater
3. Run conduit from the power distribution panel to the conduit hub on the lower right side of the SCS labeled for
power input. Refer to Application of conduit lubricant →.
4. Pull ground, neutral and line (hot) wire (#14 AWG minimum) into the power terminal box inside the heater
controller enclosure.
5. Strip back the jacket or insulation of the wires just enough to connect to the power terminal block.

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Operating Instructions SS2100-series Sample Conditioning System
6. Attach the neutral and hot wires to power terminals 4, 5, and 6. Terminals 1, 2, and 3 are connected to the
heater in the factory.
a. Connect the ground wire to terminal 4.
b. Connect the neutral wire to terminal 5.
c. Connect the line (hot) wire to terminal 6.
7. Close the power terminal box and latch the heated enclosure door.
5.1.3 Application of conduit lubricant
To ensure proper installation, using STL8 thread lubricant on all conduit screw threads and tapped openings is
recommended. STL8 thread lubricant is a lithium-based, anti-galling substance with excellent adhesion that
maintains rain-tightness and grounding continuity between conduit fittings. This lubricant has proven effective
between parts made of dissimilar metals and is stable in temperatures from –28 °C to 148 °C (–20 °F to 300 °F).
CAUTION
Do not use this lubricant on exposed current-carrying parts.
Eyes: May cause minor irritation.
Skin: May cause minor irritation.
Ingestion: Relatively non-toxic. Ingestion may result in a laxative effect. Ingestion of substantial quantities may
cause lithium toxicity.
To apply conduit lubricant
1. Holding the fitting piece at one end, generously apply the STL8 lubricant on the threaded surface (at least five
threads wide) as shown below.
A0054918
Figure 3. Applying conduit lubricant
2. Screw the pipe thread onto the conduit fitting until the lubricated threads are engaged.
5.1.4 Heat trace bundle sleeve
The heat trace bundle sleeve, manufactured by others, is an option for the SCS. When heat trace is ordered, the
following is provided:
•A conduit hole sized for a ¾in hub, sealed with a plug
•A heat trace bundle sleeve for the heat trace bundle to enter the SCS
NOTICE
The customer is responsible for installing the heat trace bundle according to the manufacturer’s instructions.
All electrical connections must be made in a junction box supplied by the customer and installed external to the
SCS enclosure per site requirements.
Interconnection of the heat trace bundle and enclosure shall be accomplished using wiring methods approved for
Class I, Division 2 hazardous locations as per the Canadian Electrical Code (CEC) Appendix J and the National
Electric Code (NEC) Article 501, or methods described in the Standard IEC/EN 60079-0 and IEC/EN 60079-14.
The installer is responsible for complying with all local installation codes.

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SS2100-series Sample Conditioning System Operating Instructions
The heat-shrinkable entry seal Model NUS-4X supplied by Endress+Hauser provides a waterproof fitting where the
heat trace bundle enters the SCS enclosure. This seal consists of a three-part assembly; a rigid plastic nylon nut, an
O-ring, and the heat-shrinkable molded area.
Tools needed
•Adjustable spanner wrench
•Heat gun
•RTV sealant
•Cable cutter
To install the heated line seal
1. From the inside of the enclosure, place the rigid plastic nylon threaded nut through the access hole to the
exterior so that the nut flanged end is against the inside of the enclosure.
2. From the outside of the enclosure, place the O-ring over the nut threaded end and position against the enclosure.
3. Screw the shrinkable, internally threaded nose onto the rigid nut.
4. Tighten using an appropriately sized spanner wrench.
Refer to the heat trace manufacturer’s website for instructions on installing the heat trace bundle.
5.2 Connecting the gas lines
Once you have verified that the SCS is functional and that the SCS circuit is de-energized, you are ready to connect
the sample and return gas lines. These include:
•Supply line
•Sample bypass return
•Sample return
•Pressure relief vent, if applicable
•Validation source, if applicable
•Purge supply, if applicable
•Instrument air supply
Consult your as-built drawings for guidance.
WARNING
Process samples may contain hazardous material in potentially flammable and toxic concentrations.
Personnel should have a thorough knowledge and understanding of the physical properties and safety
precautions for the sample contents before installing the SCS.
All following work must be performed by technicians qualified in pneumatic tubing.
Using electropolished or silco-coated, ¼” O.D. x 0.035” wall thickness, seamless stainless steel tubing is
recommended. Coated tubing is not needed for instrument air, nitrogen, or sample return. Refer to your as-built
drawings for supply and return port locations.
5.2.1 Instrument air
In the SCS, instrument air or nitrogen is used for two purposes:
•Pneumatically drives air-operated solenoid valves
•If safety purge option is installed, instrument air or nitrogen purges
When air-operated valves are used in the analyzer, they should be supplied with instrument air or nitrogen filtered
with a 5-micron particulate filter. If lubrication oil, aerosols, or other liquids are present in the air, they must be
removed using an appropriate coalescing filter.
Pressure should be set within the range indicated on the SCS tag at the instrument air inlet. Refer to the
specifications and system drawings in your as-built drawings. If no pressure setting is listed, pressure should be
maintained between 4.5 barg (65 psig) and 10.34 barg (150 psig).

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Operating Instructions SS2100-series Sample Conditioning System
Refer to Sample conditioning system maintenance →and your analyzer’s Operating Instructions → for
information related to maintenance or troubleshooting.
5.2.2 Connecting the sample supply line
WARNING
The process sample at the sample tap may be at a high pressure.
Use extreme caution when operating the sample probe isolation valve and field sample reducing pressure
regulator.
Consult sample probe manufacturer instructions for proper installation procedures.
All valves, regulators, switches, etc. should be operated in accordance with site lockout, tagout procedures.
Do not exceed 0.7 barg (10 psig) in the sample cell. Damage to cell may result.
Preparing to connect the sample supply line
Before connecting the sample supply line, do the following:
•Ensure the sample probe is correctly installed at the process supply tap.
•Confirm the sample probe isolation valve is closed.
•Confirm the field pressure reducing station is installed properly at the sample probe.
•Ensure the pressure regulator at the field pressure reducing station is closed (adjustment knob turned fully
counterclockwise) and the relief valve vent line is properly installed to the low-pressure flare or atmospheric vent
connection.
•Determine an appropriate tubing route from the field pressure reducing station to the SCS.
•Ensure the field pressure reducing station is set to the specified supply pressure in your as-built drawings.
To connect the sample supply line
1. Run electropolished or silco-coated, stainless steel tubing from the field pressure reducing station to the sample
supply port of the SCS.
2. Prepare the stainless steel tubing:
•Bend tubing using industrial grade benders.
•Check tubing fit to ensure proper seating between the tubing and fittings.
•Fully ream all tubing ends.
3. Blow out the line for 10 to 15 seconds with clean, dry nitrogen or air.
4. Connect the sample supply tube to the SCS using the ¼” stainless steel compression-type fitting provided.
5. When using a heat trace sample bundle, refer to manufacturer instructions for heat trace bundle installation.
6. Secure and tighten fittings:
•Tighten all new fittings 1¼ 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.
7. Check all connections for gas leaks using a liquid leak detector.
5.2.3 Connecting the sample return line
CAUTION
All valves, regulators, switches, etc. should be operated in accordance with site lockout, tagout procedures.
Do not exceed 0.7 barg (10 psig) in the sample cell. Damage to cell may result.
Preparing to connect the sample return line
Before connecting the sample supply line, do the following:
Confirm that the low-pressure flare or atmospheric vent header shut-off valve is closed.
Determine appropriate tubing route from the SCS to the low-pressure flare or atmospheric vent header.