TELEDYNE API N901 User manual

Copyright 2021 092910910A DCN8375
Teledyne API 23 February 2021
User Manual
Model N901
Hydrocarbon Analyzer
© Teledyne API (TAPI)
Toll-free Phone:
[phone]
9970 Carroll Canyon Road
Phone:
[phone]
San Diego, California
Fax:
[phone]
92131-1106
Email:
[e-mail]
USA
Website:
http://www.teledyne-api.com

092910910A DCN8375 Teledyne API N901 HC Analyzer i
NOTICE OF COPYRIGHT
© 2021 Teledyne API (TAPI). All rights reserved.
TRADEMARKS
All trademarks, registered trademarks, brand names or product names appearing in
this document are the property of their respective owners and are used herein for
identification purposes only.

ii Teledyne API N901 HC Analyzer 092910910A DCN8375
SAFETY MESSAGES
Important safety messages are provided throughout this manual for the purpose of
avoiding personal injury or instrument damage. Please read these messages
carefully. Each safety message is associated with a safety alert symbol and is placed
throughout this manual; the safety symbols are also located inside the instrument. It
is imperative that you pay close attention to these messages, the descriptions of
which are as follows:
WARNING: Electrical Shock Hazard
HAZARD: Strong oxidizer
GENERAL WARNING/CAUTION: Read the accompanying message
for specific information.
CAUTION: Hot Surface Warning
Do Not Touch: Touching some parts of the instrument without
protection or proper tools could result in damage to the part(s)
and/or the instrument.
Technician Symbol: All operations marked with this symbol are to be
performed by qualified maintenance personnel only.
Electrical Ground: This symbol inside the instrument marks the
central safety grounding point for the instrument.
CAUTION
This product should only be used for the purpose and in the manner
described in this manual. If you use this product in a manner other than
that for which it was intended, unpredictable behavior could ensue with
possible hazardous consequences.
NEVER exceed the recommended range of measurement for this product!
For Technical Assistance regarding the use and maintenance of this instrument or
any other Teledyne API product, contact Teledyne API’s Technical Support
Department:
Telephone: [phone]
Email: [e-mail]
or access any of the service options on our website at http://www.teledyne-api.com/

092910910A DCN8375 Teledyne API N901 HC Analyzer iii
CONSIGNES DE SÉCURITÉ
Des consignes de sécurité importantes sont fournies tout au long du présent manuel
dans le but d’éviter des blessures corporelles ou d’endommager les instruments.
Veuillez lire attentivement ces consignes. Chaque consigne de sécurité est
représentée par un pictogramme d’alerte de sécurité; ces pictogrammes se retrouvent
dans ce manuel et à l’intérieur des instruments. Les symboles correspondent aux
consignes suivantes:
AVERTISSEMENT Risque de choc électrique
DANGER: Oxydant puissant
AVERTISSEMENT GÉNÉRAL / MISE EN GARDE: Lire la
consigne complémentaire pour des renseignements
spécifiques
MISE EN GARDE: Surface chaude
Ne pas toucher: Toucher à certaines parties de l’instrument
sans protection ou sans les outils appropriés pourrait entraîner
des dommages aux pièces ou à l’instrument.
Pictogramme «technicien : Toutes les opérations portant ce
symbole doivent être effectuées uniquement par du personnel
de maintenance qualifié.
Mise à la terre: Ce symbole à l’intérieur de l’instrument
détermine le point central de la mise à la terre sécuritaire de
l’instrument.
MISE EN GARDE
Ce produit doit être utilisé aux fins décrites et de la manière
décrite dans ce manuel. Si vous utilisez ce produit d’une autre
manière que celle pour laquelle il a été prévu, l’instrument
pourrait se comporter de façon imprévisible et entraîner des
conséquences dangereuses.
Ne dépassez jamais la place de mesure recommandée pour ce
produit!

iv Teledyne API N901 HC Analyzer 092910910A DCN8375
WARRANTY
WARRANTY POLICY (02024J)
Teledyne API (TAPI), a business unit of Teledyne Instruments, Inc., provides that:
Prior to shipment, TAPI equipment is thoroughly inspected and tested. Should
equipment failure occur, TAPI assures its customers that prompt service and support
will be available. (For the instrument-specific warranty period, please refer to the
“Limited Warranty” section in the Terms and Conditions of Sale on our website at:
http://www.teledyne-api.com/terms_and_conditions.asp).
COVERAGE
After the warranty period and throughout the equipment lifetime, TAPI stands ready
to provide on-site or in-plant service at reasonable rates similar to those of other
manufacturers in the industry. All maintenance and the first level of field
troubleshooting are to be performed by the customer.
NON-TAPI MANUFACTURED EQUIPMENT
Equipment provided but not manufactured by TAPI is warranted and will be
repaired to the extent and according to the current terms and conditions of the
respective equipment manufacturer’s warranty.
PRODUCT RETURN
All units or components returned to Teledyne API should be properly packed for
handling and returned freight prepaid to the nearest designated Service Center. After
the repair, the equipment will be returned, freight prepaid.
The complete Terms and Conditions of Sale can be reviewed at
http://www.teledyne-api.com/terms_and_conditions.asp
CAUTION – Avoid Warranty Invalidation
Failure to comply with proper anti
-Electro-Static Discharge (ESD)
handling and packing instructions and Return Merchandise
Authorization (RMA) procedures when returning parts for repair or
calibration may void your warranty. For anti
-ESD handling and
packi
ng instructions please refer to the manual, Fundamentals of
ESD, PN 04786, in its
“Packing Components for Return to Teledyne
API’s Customer Service”
section. The manual can be downloaded
from our website at
http://www.teledyne-api.com. RMA procedures
can also be found on our website
.

092910910A DCN8375 Teledyne API N901 HC Analyzer v
ABOUT THIS MANUAL
Note We recommend that all users read this manual in its entirety
before operating the instrument.
CONVENTIONS USED
In addition to the safety symbols as presented in the Safety Messages page, this
manual provides special notices related to the careful and effective use of the
instrument and related, pertinent information.
ATTENTION
COULD DAMAGE INSTRUMENT AND VOID WARRANTY
This special notice provides information to avoid damage
to your instrument and possibly invalidate the warranty.
Important
IMPACT ON READINGS OR DATA
Provides information about that which could either affect
accuracy of instrument readings or cause loss of data.
Note
Provides information pertinent to the proper care,
operation or maintenance of the instrument or its parts.

vi Teledyne API N901 HC Analyzer 092910910A DCN8375
TABLE OF CONTENTS
Safety Messages...................................................................................................................................... ii
Warranty.................................................................................................................................................. iv
Table of Contents.................................................................................................................................... vi
List of Figures.......................................................................................................................................... ix
List of Tables ........................................................................................................................................... ix
1. INTRODUCTION, SPECIFICATIONS, APPROVALS, & COMPLIANCE ...............................................11
Specifications .................................................................................................................................. 11
Safety .............................................................................................................................................. 12
EMC ................................................................................................................................................ 12
2. GETTING STARTED .............................................................................................................................. 13
Unpacking .......................................................................................................................................13
Ventilation Clearance...........................................................................................................14
Instrument Layout ........................................................................................................................... 15
Front Panel........................................................................................................................... 15
Rear Panel ........................................................................................................................... 16
Internal Chassis ................................................................................................................... 18
Connections and Startup................................................................................................................. 19
Electrical Connections ......................................................................................................... 19
Connecting Power ................................................................................................. 19
Connecting Analog Outputs Option.......................................................................20
Connecting the Digital I/O Expansion Board Option .............................................21
Connecting Communications Interfaces................................................................22
Pneumatic Connections .......................................................................................................23
Critical Tubing, Pressure, Venting and Exhaust Requirements ............................ 24
Basic Pneumatic Connections............................................................................... 25
Basic Connections from Calibrator ......................................................................... 26
Pneumatic Flow Diagrams ................................................................................................... 27
Startup, Functional Checks and Calibration ........................................................................ 29
Power Status ......................................................................................................... 29
Startup ...................................................................................................................30
Alerts: Warnings and Other Messages..................................................................31
Functional Checks................................................................................................. 32
Menu Overview ............................................................................................................................... 33
Home Page ..........................................................................................................................34
Dashboard............................................................................................................................36
Alerts ....................................................................................................................................37
Calibration ............................................................................................................................38
Utilities.................................................................................................................................. 39
Setup....................................................................................................................................39
Setup Menu: Features/Functions Configuration ............................................................................ 40
Setup>Data Logging (Data Acquisition System, DAS) ........................................................ 40
Configuring Trigger Types: Periodic......................................................................42
Configuring Trigger Types: Conditional................................................................43
Downloading DAS (Data Acquisition System) Data .............................................. 43
Setup>Events....................................................................................................................... 44
Editing or Deleting Events .....................................................................................45
Using Events as Triggers for Data Logging........................................................... 46
Setup>Dashboard ................................................................................................................ 46
Setup>AutoCal (with Valve Option) .....................................................................................46
Setup>Vars ..........................................................................................................................47
Setup>GC Gas Config .........................................................................................................49
Setup>Homescreen .............................................................................................................50

092910910A DCN8375 Teledyne API N901 HC Analyzer vii
Setup>Digital Outputs (Option)............................................................................................51
Setup>Instrument................................................................................................................. 52
Setup>Comm (Communications)....................................................................................... 52
COM1 .................................................................................................................. 52
TCP Port1............................................................................................................53
TCP Port2............................................................................................................53
Network Settings ................................................................................................. 54
Transferring Configuration to Other Instruments ............................................................................55
3. COMMUNICATIONS AND REMOTE OPERATION ...............................................................................56
Serial Communication .....................................................................................................................56
Ethernet........................................................................................................................................... 56
NumaView™ Remote......................................................................................................................56
4. CALIBRATION ........................................................................................................................................57
Important Precalibration Information ............................................................................................. 57
Calibration Requirements .................................................................................................... 57
Zero Air ................................................................................................................................ 58
Calibration (Span) Gas ........................................................................................................ 58
Data Recording Devices ......................................................................................................59
Calibration Procedures.................................................................................................................... 59
Calibration and Check Procedures for Basic Configuration ................................................59
O2Calibration ........................................................................................................ 60
CH4 Calibration ..................................................................................................... 61
NMHC Calibration..................................................................................................62
Calibration and Check Procedures with Span Cal Valve and Digital Expansion Board
Options Installed ............................................................................................................................ 64
Automatic Span Cal Check (Auto Cal)............................................................................................ 64
5. MAINTENANCE AND SERVICE ............................................................................................................66
Maintenance Schedule....................................................................................................................66
Operational Health Checks .............................................................................................................67
Software/Firmware Updates............................................................................................................67
Remote Updates .................................................................................................................. 67
Manual Reload/Update Procedures..................................................................................... 68
Time Zone Changes........................................................................................................................ 69
Service and Troubleshooting ..........................................................................................................70
Fault Diagnosis with Alerts................................................................................................... 71
Using the Diagnostic Signal I/O Functions ..........................................................................71
Fault Diagnosis with LEDs ................................................................................................... 71
Calibration Problems............................................................................................................ 72
Absence of Analyzer Response to Sample Gas ................................................... 72
Unstable Zero and Span........................................................................................73
Inability to Span - Deactivated SPAN Button ........................................................ 73
Other Possible Performance Problems ............................................................................... 73
Trouble Igniting the Flame Ionization Detector (FID) ............................................73
Negative Chromatograph Peaks ...........................................................................74
Slow Response...................................................................................................... 74
Subsystem Check for Troubleshooting................................................................................74
AC Main Power......................................................................................................75
LCD/Display Module..............................................................................................75
RS-232 Communications.......................................................................................75
Service Procedures.............................................................................................................. 76
Flow Adjustment (Calibration) Procedures............................................................ 76
Column Maintenance............................................................................................. 77
Filter Element Replacement ..................................................................................78
Pump Replacement ............................................................................................... 78
Fuse Replacement Procedure...............................................................................79

viii Teledyne API N901 HC Analyzer 092910910A DCN8375
Technical Assistance ......................................................................................................................80
6. PRINCIPLES OF OPERATION .............................................................................................................. 81
Pneumatic Operation ...................................................................................................................... 82
Electronic Operation........................................................................................................................82
Modules................................................................................................................................82
Power Switches.................................................................................................................... 83
Appendix A - MODBUS Registers
Appendix B - Interconnects

092910910A DCN8375 Teledyne API N901 HC Analyzer ix
LIST OF FIGURES
Figure 2-1. Front Panel Layout ................................................................................................................... 15
Figure 2-2. Rear Panel Layout.................................................................................................................... 16
Figure 2-3. Internal Chassis Layout ............................................................................................................ 18
Figure 2-4. Analog Outputs Connectors Panel Option ............................................................................... 20
Figure 2-5. Digital I/O Connector Panel Option .......................................................................................... 21
Figure 2-6. Mainboard JP1 Location and Pin Arrangements...................................................................... 22
Figure 2-7. Gas Line Connections from Calibrator – Basic Configuration.................................................. 26
Figure 2-8. Gas Line Connections without Calibrator ................................................................................. 26
Figure 2-9. Pneumatic Flow Diagram of Sample Capture Cycle ................................................................ 27
Figure 2-10. Pneumatic Flow Diagram of Measure Cycle .......................................................................... 28
Figure 2-11. Pneumatic Flow Diagram of Sample Capture Cycle with Span Valve Option ....................... 28
Figure 2-12. Pneumatic Flow Diagram of Measure Cycle with Span Valve Option.................................... 29
Figure 2-13. Status Screens at Startup....................................................................................................... 30
Figure 2-14. Home Page............................................................................................................................. 30
Figure 2-15. Viewing Active Alerts Page..................................................................................................... 31
Figure 2-16. Sample Dashboard Page ....................................................................................................... 32
Figure 2-17. User Interface Orientation ...................................................................................................... 34
Figure 2-18. Concentration Graph (top) and Meter Graph (bottom) ........................................................... 35
Figure 2-19. Parameter Graph from Dashboard Page ............................................................................... 36
Figure 2-20. Active Alerts Page .................................................................................................................. 37
Figure 2-21. Active Alerts Cleared .............................................................................................................. 38
Figure 2-22. Utilities>Alerts Log of Active and Past Alerts and Events ...................................................... 38
Figure 2-23. Datalog Configuration, New Log Page ................................................................................... 40
Figure 2-24. Datalog Configuration, Existing Log ....................................................................................... 40
Figure 2-25. Creating a New Data Log ....................................................................................................... 41
Figure 2-26. Datalog Periodic Trigger Configuration .................................................................................. 42
Figure 2-27. Datalog - Conditional Trigger Configuration ........................................................................... 43
Figure 2-28. DAS Download Page.............................................................................................................. 43
Figure 2-29. Example Events List ............................................................................................................... 44
Figure 2-30. Event Configuration ................................................................................................................ 44
Figure 2-31. Configured Event Sample....................................................................................................... 45
Figure 2-32. Edit or Delete an Event........................................................................................................... 45
Figure 2-33. Dashboard Display and Configuration.................................................................................... 46
Figure 2-34. GC Gas Configuration ............................................................................................................ 49
Figure 2-35. Homescreen Configuration..................................................................................................... 50
Figure 2-36. Digital Outputs Setup.............................................................................................................. 51
Figure 2-37. Communications Configuration, Network Settings ................................................................. 54
Figure 2-38. Configuration Transfer............................................................................................................ 55
Figure 4-1. Reconfiguration when Nitrogen Used as Span Gas................................................................. 58
Figure 4-2. Auto Cal Page........................................................................................................................... 64
Figure 5-1: Report Generation Page........................................................................................................... 67
Figure 5-2. Remote Update Page ............................................................................................................... 68
Figure 5-3. Manual Update Page (and other utilities) ................................................................................. 68
Figure 5-4. Time Zone Change Requirements ........................................................................................... 69
Figure 5-5. Mainboard................................................................................................................................ 72
Figure 5-6. Flow Adjust Menu ..................................................................................................................... 77
Figure 5-7. Fuse Access ............................................................................................................................. 79
Figure 6-1. Chromatograph Example of THC, O2, and CH4Peaks ............................................................ 81
LIST OF TABLES
Table 1-1. Specifications............................................................................................................................. 11
Table 2-1. Ventilation Clearance................................................................................................................. 14

x Teledyne API N901 HC Analyzer 092910910A DCN8375
Table 2-2. Rear Panel Description.............................................................................................................. 17
Table 2-3. Analog Output Pin Assignments ................................................................................................ 20
Table 2-4. Digital Input/Output Pin Assignments ........................................................................................ 21
Table 2-5. JP1 Configurations for Serial Communication........................................................................... 23
Table 2-6. Menu Overview .......................................................................................................................... 33
Table 2-7. Utilities Submenu Descriptions .................................................................................................. 39
Table 2-8. Key Variables with Default Values and Descriptions................................................................. 47
Table 2-9. Common Variables with Descriptions........................................................................................ 48
Table 2-10. Setup>Instrument Menu .......................................................................................................... 52
Table 2-11. COM1 Setup ............................................................................................................................ 52
Table 2-12. LAN/Ethernet Configuration Properties ................................................................................... 54
Table 3-1. Ethernet Status Indicators ......................................................................................................... 56
Table 4-1. Auto Cal Programming Sequence Execution ............................................................................ 65
Table 5-1. Maintenance Schedule .............................................................................................................. 66

092910910A DCN8375 Teledyne API N901 HC Analyzer 11
1. INTRODUCTION, SPECIFICATIONS, APPROVALS, &
COMPLIANCE
Teledyne API’s Model N901 Hydrocarbon Analyzer is a high-sensitivity instrument that
uses Gas Chromatography (GC) with a Flame Ionization Detector (FID) to measure the
concentration of Total Hydrocarbons (THC) and Methane (CH4) in air, and calculates the
difference to provide an accurate non-Methane (non-CH4) concentration reading. The
range and performance of the N901 are tuned specifically for use in ambient air quality
monitoring assessments.
The Model N901 is designed for simple operation and maintenance with a modular
hardware and electronics architecture. A long-life stainless-steel fritted filter is used at the
sample intake to effectively remove particulate matter without introducing any gas-phase
measurement artifacts. Instrument operation, calibration functions and data handling are
all automated and controlled using the internal NumaViewTM Software (NVS) interface,
without the need for an external PC. Additionally, NumaViewTM Remote Software can also
be used for remote communications, for access to the graphical user interface, for
downloading data, and for other operations.
The section on Principles of Operation (Section 6) provides more information on the
method and the functional details.
SPECIFICATIONS
Table 1-1. Specifications
Parameter
Description
Ranges (Methane)
Min: 0-5 ppm
Max: 0-1,000 ppm
Measurement Units
ppm, ppb
Zero Drift
Zero baseline performed once per cycle
Span Drift (24 hr)
< 1% of full scale
Lower Detectable Limit
<25 ppb (Methane); <25 ppb (Propane)
Linearity
<1% of full scale
Precision
<1% of reading or 0.05 ppm (whichever is greater)
Sample Flow Rate
60 cc/min ±10%
Carrier Gas
50 to 70 psi, N2 UHP Grade (99.999% purity), consumption 20 cc/min
Fuel Gas
50 psi ± 5%, H2 UHP Grade (99.999% purity), consumption 35 cc/min
FID Air
50 psi ± 5%, HC Free clean air, consumption 350 cc/min
Auxiliary Air
70 psi ± 5%, Clean Dry Air, consumption 1 cc/actuation
AC Power
Rating
Typical Power Consumption
100-120 V~, 60 Hz, 3 A
220-240 V~, 50/60 Hz, 3 A
130 W
135 W
Power Entry Module Fuse
5.0 A, 250 V AC, 5 mm x 20 mm, SLO-BLO

12 Teledyne API N901 HC Analyzer 092910910A DCN8375
Parameter
Description
Communications
Standard I/O
1 Ethernet (TCP/IP)
1 RS-232
2 front panel USB device ports
Optional I/O
Universal Analog Output Board (all user-definable):
4 x isolated voltage outputs (5 V, 10 V)
3 x individually isolated current outputs (4-20 mA)
Digital I/O Expansion Board includes:
3 x isolated digital input controls (fixed)
5 x isolated digital output controls (user-definable)
3 x form C relay alarm outputs (user-definable)
Operating Temperature
5-40
o
C
Humidity Range
0-95% RH, Non-Condensing
Dimensions HxWxD 7” x 17” x 23.5” (178 x 432 x 597 mm)
Weight 35 lbs (16 kg)
Environmental Conditions •Installation Category (Over Voltage Category ) II Pollution Degree 2
•Intended for Indoor Use Only at Altitudes ≤2000m
Note: All specifications are based on constant conditions
SAFETY
IEC/EN 61010-1:2010 (3rd Edition), Safety requirements for electrical equipment for
measurement, control, and laboratory use.
CE:2014/35/EU, Low-Voltage Directive
EMC
EN 61326-1 (IEC 61326-1), Class A Emissions/Industrial Immunity
FCC 47 CFR Part 15B, Class A Emissions
CE: 2014/30/EU, Electromagnetic Compatibility Directive

092910910A DCN8375 Teledyne API N901 HC Analyzer 13
2. GETTING STARTED
This section addresses unpacking, connecting, and initializing the instrument, getting an
overview of the menu system, and setting up/configuring the functions.
UNPACKING
CAUTION - GENERAL SAFETY HAZARD
To avoid personal injury, always use two persons to lift and
carry the analyzer.
ATTENTION
COULD DAMAGE INSTRUMENT AND VOID WARRANTY
Printed Circuit Assemblies (PCAs) are sensitive to electro-static
discharges too small to be felt by the human nervous system. Failure
to use Electro-Static Discharge (ESD) protection when working with
electronic assemblies will void the instrument warranty. Refer to the
manual, Fundamentals of ESD, PN 04786, which can be downloaded
from our website at http://www.teledyne-api.com.
ATTENTION
COULD DAMAGE INSTRUMENT AND VOID WARRANTY
Do not operate this instrument without first removing dust plugs from
SAMPLE and EXHAUST ports on the rear panel.
Note Teledyne API recommends that you store shipping containers
and
materials for future use if/when the instrument should be
returned to the factory for repair and/or calibration service. See
Warranty statement in this manual and Return Merchandise
Authorization (RMA) on our Website at http://www.teledyne-
api.com.
Verify that there is no apparent external shipping damage. If damage has occurred, please
advise the shipper first, then Teledyne API.
Included with your instrument is a printed record of the final performance characterization
performed on your instrument at the factory. This record, titled Final Test and Validation
Data Sheet, is an important quality assurance and calibration record and should be placed
in the quality records file for this instrument.

14 Teledyne API N901 HC Analyzer 092910910A DCN8375
With no power to the unit, carefully remove the top cover of the instrument and check for
internal shipping damage by carrying out the following steps:
1. Carefully remove the top cover and check for internal shipping damage.
a. Remove the screws located on the instrument’s sides.
b. Slide the cover backward until it clears the instrument’s front bezel.
c. Lift the cover straight up.
2. Inspect the interior of the instrument to ensure all circuit boards and other
components are intact and securely seated.
3. Check the connectors of the various internal wiring harnesses and
pneumatic hoses to ensure they are firmly and securely seated.
4. Verify that all of the optional hardware ordered with the unit has been
installed. These are listed on the paperwork accompanying the instrument.
WARNING – ELECTRICAL SHOCK HAZARD
Never disconnect PCAs, wiring harnesses or electronic
subassemblies while under power.
VENTILATION CLEARANCE
Whether the instrument is set up on a bench or installed in a rack, be sure to leave sufficient
ventilation clearance.
Table 2-1. Ventilation Clearance
AREA
MINIMUM REQUIRED CLEARANCE
Back of the instrument 10 cm / 4 in
Sides of the instrument 2.5 cm / 1 in
Above and below the instrument 2.5 cm / 1 in

092910910A DCN8375 Teledyne API N901 HC Analyzer 15
INSTRUMENT LAYOUT
Instrument layout includes front panel, rear panel connectors, and the internal chassis layout.
FRONT PANEL
The front panel (Figure 2-1) includes two USB ports for peripheral device connections,
which can be used with mouse and keyboard as alternatives to the touchscreen interface,
or with flash drive for uploads/downloads (devices not included).
Figure 2-1. Front Panel Layout

16 Teledyne API N901 HC Analyzer 092910910A DCN8375
REAR PANEL
Figure 2-2 shows the layout of the rear panel, and Table 2-2 provides descriptions.
Figure 2-2. Rear Panel Layout

092910910A DCN8375 Teledyne API N901 HC Analyzer 17
Table 2-2. Rear Panel Description
COMPONENT FUNCTION
AIR IN
Connect an air source free of hydrocarbon and moisture. The pressure must be between
45-55 PSI. The air consumption is 350CCM
AUX IN*
Connect clean zero air or Nitrogen with pressure between 65-75 PSI to actuate the switch
valve. It is possible to connect both CARRIER IN and AUX-IN ports on one line. The
consumption of the Aux In is 1CC per actuation
FID EXHAUST
Keep this port clear and open in a well-ventilated area for output from the FID, which is
primarily air and some water vapor and other combustion byproducts. If instrument is in an
enclosed or poorly ventilated area, vent this port with shortest line possible with the largest
inner diameter possible in order to prevent back pressure to the detector.
CARRIER IN*
Connect UHP Nitrogen (N
2
) gas (99.999% purity). The pressure supplied must be
between 45-70 PSI. The gas consumption is ~20 CCM.
SAMPLE IN
Connect a gas line from the source of sample gas to the externally mounted filter.
Calibration gas can also enter here, at ambient pressure, on units without the pressurized
valve option installed.
SAMPLE EXHAUST
Connect an exhaust gas line of not more than 10 meters long here that leads outside the
shelter or immediate area surrounding the instrument. The line must be ¼” tubing or
greater.
Cal Out
For use in calibration when valve options installed. Connect the output to the Sample In
port with Tee fitting to vent the extra gas
Cal In
For use in calibration when valve options installed. The Calibration gas that connects to
the ports should be 15PSI ± 2PSI
FUEL
Connect UHP Hydrogen (H
2
) gas (99.999% purity) with pressure between 45-55 PSI. Fuel
consumption is ~35 SCCM while flame is on. (Fuel line is shut off during Standby mode to
minimize fuel consumption).
Cooling fan
Pulls ambient air into chassis through side vents and exhausts through rear.
Power cable
connector
Connector for three-prong cord to apply AC power to the analyzer.
CAUTION! The cord’s power specifications (specs) MUST comply with the power
specs on the analyzer’s rear panel label
Power
On/Off
Switch
Rocker switch to power unit on or off.
CAUTION! Prior to powering OFF, use front panel button for “soft” power-down of internal
components.
Fuse drawer
For circuit protection.
Model/specs label
Identifies the analyzer model number and provides power specs.
DIGITAL I/O Option
For remotely activating the span calibration mode.
ANALOG OUT Option
For voltage or current loop outputs to a strip chart recorder and/or a data logger.
ETHERNET
Connector for network or Internet remote communication, using Ethernet cable.
COM
Serial communications port for RS-232.
* It is possible to connect both CARRIER IN and AUX-IN ports on one line, using a tee-fitting, only if the line can supply
70 PSI continually (between 65-75 PSI).

18 Teledyne API N901 HC Analyzer 092910910A DCN8375
INTERNAL CHASSIS
Figure 2-3 shows the internal chassis layout.
Figure 2-3. Internal Chassis Layout