TELEDYNE API T300 Installation and operating instructions

MANUAL ADDENDUM
MODEL T300U
CO Analyzer with Auto-Reference
(Addendum to T300/T300M Operation Manual, P/N 06864)
© TELEDYNE API (TAPI)
9970 CARROLL CANYON ROAD
SAN DIEGO, CA 92131-1106
Toll-free Phone:
800-324-5190
Phone:
[phone]
Fax:
[phone]
Email:
[e-mail]
Website:
http://www.teledyne-api.com/
Copyright 2010-2018 06867D DCN7970
Teledyne API 21 August 2018

06867D DCN7970 i
WARRANTY
See Warranty page in the T300/T300M Manual - P/N 06864.
ABOUT THIS MANUAL
This manual is intended for use in conjunction with the Model T300/T300M
Operation Manual, part number 06864. Where operation of the Model T300U
diverges from that of the Model T300/T300M, this addendum takes precedence.

Teledyne API - T300U Addendum to T300/T300M Manual
ii 06867D DCN7970
This page intentionally left blank.

06867D DCN7970 iii
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 are placed throughout this manual and inside the instrument. The symbols with
messages are defined 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 instrument should only be used for the purpose and in the manner described
in this manual. If you use this instrument in a manner other than that for which it
was intended, unpredictable behavior could ensue with
possible hazardous
consequences.
NEVER use any gas analyzer to sample combustible gas(es)!
Note Technical Assistance regarding the use and maintenance of the
T300/T300M or any other Teledyne API product can be obtained by
contacting Teledyne API’s Technical Support Department:
Phone: [phone]
Email: [e-mail]
or by accessing various service options on our website at
http://www.teledyne-api.com/.

Teledyne API - T300U Addendum to T300/T300M Manual
iv 06867D DCN7970
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
Cet instrument doit être utilisé aux fins décrites et de la manière décrite dans
ce manuel. Si vous utilisez cet instrument 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 JAMAIS utiliser un analyseur de gaz pour échantillonner des gaz
combustibles!

06867D DCN7970 v
TABLE OF CONTENTS
1. INTRODUCTION.....................................................................................................................................................................9
1.1. Reference Numbering Convention...................................................................................................................................9
1.2. T300U Overview...............................................................................................................................................................9
1.3. Calibration Valve Options for the T300U........................................................................................................................10
2. SPECIFICATIONS, APPROVALS, AND WARRANTY ........................................................................................................11
2.1. Specifications.................................................................................................................................................................11
2.2. EPA Equivalency Designation........................................................................................................................................12
2.3. Approvals and Certifications...........................................................................................................................................12
2.3.1. Safety .....................................................................................................................................................................12
2.3.2. EMC........................................................................................................................................................................12
2.3.3. Other Type Certifications........................................................................................................................................12
3. GETTING STARTED ............................................................................................................................................................13
3.1. Unpacking the T300U.....................................................................................................................................................13
3.2. Instrument Layout...........................................................................................................................................................13
3.3. Connections and Setup..................................................................................................................................................15
3.3.1. Electrical Connections............................................................................................................................................15
3.3.1.1. Connecting Analog Outputs............................................................................................................................15
3.3.2. Connecting Status Outputs.....................................................................................................................................17
3.3.3. Pneumatics.............................................................................................................................................................18
3.4. Startup, Functional Checks, and Initial Calibration.........................................................................................................20
3.4.1. Startup....................................................................................................................................................................20
3.4.2. Warning Messages.................................................................................................................................................20
3.4.3. Functional Checks..................................................................................................................................................21
3.5. Initial Calibration.............................................................................................................................................................22
3.5.1. Pre-Calibration Stabilization ...................................................................................................................................22
3.5.2. Basic CO Calibration SETUP .................................................................................................................................22
3.5.2.1. Calibration Gases ...........................................................................................................................................22
3.5.3. Basic CO Calibration Procedure.............................................................................................................................23
4. T300U OPERATING INSTRUCTIONS .................................................................................................................................25
4.1. Summary of Setup and operation Differences between T300U and T300/T300M Analyzers.........................................25
4.2. Operating Modes............................................................................................................................................................26
4.2.1. Auto-Reference Mode (A-REF) ..............................................................................................................................27
4.2.2. Test Functions........................................................................................................................................................28
4.3. SETUP RNGE: Analog Output Reporting Range Configuration ................................................................................29
4.3.1. Physical Range versus Analog Output Reporting Ranges......................................................................................29
4.3.2. Analog Output Ranges for CO Concentration.........................................................................................................29
4.3.3. RNGE MODE SNGL: Configuring the T300U Analyzer for Single Range Mode ...........................................31
4.3.4. RNGE MODE DUAL: Configuring the T300U Analyzer for Dual Range Mode.............................................32
4.3.5. RNGE MODE AUTO: Configuring the T300U Analyzer for Auto Range Mode..............................................33
4.3.6. SETUP RNGE UNIT: Setting the Reporting Range Unit Type.......................................................................35
4.4. SETUP MORE AREF: Configuring and Performing Auto-Reference Measurements............................................36
4.4.1. Adjusting the A-REF Mode Cycle Time ..................................................................................................................36
4.4.2. Forcing an Auto-Reference Measurement..............................................................................................................38
4.5. SETUP MORE VARS: Variables Setup and Definition..........................................................................................39
4.6. SETUP MORE DIAG: Diagnostics Functions.......................................................................................................40
4.7. Analog Output Configuration..........................................................................................................................................41
4.7.1. Analog I/O Configuration ........................................................................................................................................41
4.7.2. Analog Output Calibration.......................................................................................................................................44
4.7.3. Selecting a Test Channel Function for Output A4...................................................................................................45
4.7.4. Hessen Protocol.....................................................................................................................................................47
5. CALIBRATION PROCEDURES ...........................................................................................................................................49
5.1. Required Equipment, Supplies and Expendables ..........................................................................................................49
5.2. Manual Calibration .........................................................................................................................................................49
5.2.1. Manual Calibration Checks.....................................................................................................................................50
5.2.2. Manual Calibration with Zero/Span Valves.............................................................................................................50
5.2.3. Manual Calibration Checks with Zero/Span Valves................................................................................................50
5.2.4. Calibration With Remote Contact Closures ............................................................................................................50
5.2.5. Automatic Zero/Span Cal/Check (AutoCal) ............................................................................................................50
5.2.6. CO Calibration Quality............................................................................................................................................51
5.2.7. Calibration of Optional Sensors..............................................................................................................................51
6. EPA PROTOCOL CALIBRATION........................................................................................................................................53
7. INSTRUMENT MAINTENANCE ...........................................................................................................................................55

Teledyne API - T300U Addendum to T300/T300M Manual Table of Contents
vi 06867D DCN7970
7.1. Perfoming an Auto-Reference Measurement after Maintenance....................................................................................55
8. PRINCIPLES OF OPERATION.............................................................................................................................................59
8.1. Measurement Method ....................................................................................................................................................59
8.1.1. Auto-Reference (A-REF) Ratio...............................................................................................................................59
8.2. Pneumatic Operation......................................................................................................................................................60
8.2.1. The A-REF Carbon Monoxide Scrubber.................................................................................................................61
8.2.2. The A-REF Valve Assembly...................................................................................................................................61
8.2.3. The NafionDryer. .................................................................................................................................................61
8.3. Electronic Operation.......................................................................................................................................................64
8.3.1. Overview.................................................................................................................................................................64
8.3.2. The Relay PCA.......................................................................................................................................................65
8.3.2.1. Temperature Control of the Convection Oven ................................................................................................66
8.3.2.2. Oven Heater AC Power Configuration............................................................................................................67
8.3.2.3. Status LEDs....................................................................................................................................................68
8.3.3. Motherboard...........................................................................................................................................................68
8.3.3.1. A to D Conversion...........................................................................................................................................68
8.3.3.2. Sensor Inputs..................................................................................................................................................68
8.3.4. Power Distribution...................................................................................................................................................69
9. TROUBLESHOOTING & SERVICE......................................................................................................................................71
9.1. General Notes................................................................................................................................................................71
9.2. Fault Diagnosis with Warning Messages........................................................................................................................72
9.2.1. Fault Diagnosis with Test Functions.......................................................................................................................74
9.2.2. Relay Board Status LEDs.......................................................................................................................................76
9.3. Gas Flow Problems........................................................................................................................................................77
9.4. Other Performance Problems.........................................................................................................................................77
9.4.1. Unexplained Drift....................................................................................................................................................77
9.5. Subsystem Checkout .....................................................................................................................................................78
9.5.1. Relay Board............................................................................................................................................................78
9.5.2. Motherboard...........................................................................................................................................................78
9.5.2.1. A/D Functions .................................................................................................................................................78
9.6. Technical Assistance......................................................................................................................................................79
LIST OF FIGURES
Figure 3-1: T300U Internal Layout .................................................................................................................14
Figure 3-2: T300U Analog Output Connector ................................................................................................16
Figure 3-4: T300U Internal Pneumatic Flow – Ambient Zero/Span Valves (OPT 50A).................................19
Figure 4-1: Display during A-REF Mode........................................................................................................27
Figure 4-2: Analog Output Connector Pin Out...............................................................................................29
Figure 8-1: T300U Gas Flow during Auto-Reference Measurements............................................................59
Figure 8-2: Auto-Reference Measurement Cycle...........................................................................................60
Figure 8-3: Semi-Permeable Membrane Drying Process ..............................................................................62
Figure 8-4: T300U Electronic Overview Block Diagram.................................................................................65
Figure 8-5: T300U Heating Control Block Diagram........................................................................................66
Figure 8-6: T300U Oven Heater Configuration Jumpers...............................................................................67
Figure 8-7: T300U Oven Heater Configuration Circuit...................................................................................67
Figure 8-8: T300U Distribution Block Diagram...............................................................................................69
LIST OF TABLES
Table 2-1: T300U Basic Unit Specifications..................................................................................................11
Table 3-1: Analog Output Data Type Default Settings..................................................................................16
Table 3-2: Analog Output Pin Outs...............................................................................................................16
Table 3-3: Status Output Pin Assignments...................................................................................................17
Table 3-4: Possible Warning Messages at Start-Up.....................................................................................20
Table 4-1: T300U Operating Modes .............................................................................................................26
Table 4-2: Test Functions Defined................................................................................................................28

Table of Contents Teledyne API - T300U Addendum to T300/T300M Manual
06867D DCN7970 vii
Table 4-3: T300U VARS Menu .....................................................................................................................39
Table 4-4: T300U Diagnostic (DIAG) Submenus..........................................................................................40
Table 4-5: DIAG - Analog I/O Functions.......................................................................................................41
Table 4-6: Test Channels Functions Available on the T300U’s Analog Output............................................45
Table 4-7: T300U Hessen GAS ID List.........................................................................................................47
Table 4-8: Default Hessen Status Bit Assignments......................................................................................47
Table 5-1: AUTOCAL Modes........................................................................................................................50
Table 7-1: T300U Test Function Record.......................................................................................................57
Table 8-1: Auto-Reference Valve Operating States .....................................................................................61
Table 8-2: Relay Board Status LED’s ...........................................................................................................68
Table 9-1: Warning Messages - Indicated Failures ......................................................................................72
Table 9-2: Test Functions - Indicated Failures..............................................................................................74
Table 9-3: Relay Board Status LED Failure Indications ...............................................................................76
Table 9-4: Relay Board Control Devices.......................................................................................................78
LIST OF APPENDICES
APPENDIX A: Software Menu Trees, Revision L.8
APPENDIX B: Interconnect List and Diagram

Teledyne API - T300U Addendum to T300/T300M Manual Table of Contents
viii 06867D DCN7970
This page intentionally left blank.

06867D DCN7970 9
1. INTRODUCTION
This addendum for the Teledyne API Model T300U is a supplement to the T300/T300M
manual (P/N 06864) and provides an overview of the instrument operation and specific
details regarding those areas where the T300U is different in design or operating method
from the T300.
In most ways the T300U is identical to the T300/T300M in design and operation;
therefore, most of the basic set up information, operating instructions and calibration,
maintenance, troubleshooting and repair methods are the same and can be found in the
T300/T300M manual (P/N 06864).
1.1. REFERENCE NUMBERING CONVENTION
Unless otherwise specified, section, figure and table reference numbers referred to
within this text are relative to this document. EXAMPLE: “Table 2-1” refers to the table
within this document.
Additionally, in the electronic version(s) of this manual references internal to this
document will be active links to that section, figure or table.
References to sections, figures and tables in other manuals will be labeled as such and
will not be an active link. EXAMPLE: “Figure 6.1 of the T300/T300M Operators
Manual (P/N 06864)”.
1.2. T300U OVERVIEW
The Model T300U is a close derivative of the T300/T300M CO Analyzer; however its
higher sensitivity requires some changes to its design and operation, which are
documented in this addendum.
The primary differences between the T300U and the T300/T300M analyzers are:
•INTERFERENT REJECTION: Periodically the sample gas stream is routed through
an internal CO scrubber allowing the instrument to make a measurement of the
sample gas completely free of CO; the measurement made during this auto-
reference period (A-REF) is subtracted from the sample concentration
measurement. This corrects for instrument drift, ambient temperature changes and
changing CO2levels in the sample gas.
•OPERATING METHOD: An additional operating mode is added allowing the user to
manipulate several parameters associated with the A-REF measurement cycle.
•SAMPLE GAS CONDITIONING: A Nafiondrier is used to dry the sample and
alleviate any effects from humidity changes in the sample gas.
•IR OPTICS: The objective and field mirrors on the optical bench are gold plated.
This maximizes their reflectivity and increasing the amount of IR light reaching the
detector and improving the optical bench’s signal-to-noise performance.
•PNEUMATIC OPERATION: The flow rate is higher. It has a 1.8 LPM nominal flow
rate. The flow sensor is rated to 6 LPM.
•MECHANICAL DESIGN: The optical bench is placed in a temperature-controlled,
convection-heated oven. This dramatically reduces instrument noise and
temperature related drift.

Introduction Teledyne API - T300U Addendum to T300/T300M Manual
10 06867D DCN7970
1.3. CALIBRATION VALVE OPTIONS FOR THE T300U
The hardware options for the T300x family of analyzers are available in the T300U. For
a list and descriptions of these options please see Section 1 of the T300/T300M
Operators Manual (P/N 06864).
However, the T300U offers one calibration valve option: Ambient Zero and Ambient
Span, except that due to the auto-reference gas path and multi-tube Nafiondryer, this
option has a different gas flow in the T300U versus the T300/T300M.

06867D DCN7970 11
2. SPECIFICATIONS, APPROVALS, AND WARRANTY
2.1. SPECIFICATIONS
Table 2-1: T300U Basic Unit Specifications
PARAMETER SPECIFICATION
Ranges Min: 0-100 ppb Full scale
Max: 0-100 ppm Full scale (selectable dual ranges and auto ranging supported)
Measurement Units ppb, ppm, µg/m3, mg/m3(selectable)
Zero Noise 1≤ 10 ppb RMS
Span Noise 1< 0.5% of reading RMS above 2.5 ppm3
Lower Detectable Limit < 20 ppb
Zero Drift (24 hours) 2< 20 ppb
Span Drift (24 hours)
4
< 0.5% of reading above 5ppm
Lag Time 110 sec
Rise/Fall Time 1< 60 sec to 95%
Linearity 51% of full scale
Precision 1, 50.5% reading
Sample Flow Rate 1800 cm3/min. ± 20%
AC Power Requirements Rating 100V-120V~, 60Hz, 3.0 A
220V-240V~, 50/60 Hz, 3.0 A
Typical Power Consumption
165 W
225 W
Analog Output Ranges 10V, 5V, 1V, 0.1V (selectable)
Analog Output Resolution 1 part in 4096 of selected full-scale voltage
Recorder Offset ± 10%
Voltage Coefficient < 0.05 % of reading per V
Standard I/O
1 Ethernet: 10/100Base-T
2 RS-232 (300 – 115,200 baud)
2 USB front panel device ports
8 opto-isolated digital status outputs
6 opto-isolated digital control inputs (2 defined, 4 spare)
4 analog outputs
Optional I/O
1 USB com port
1 RS485
8 analog inputs (0-10V, 12-bit)
4 digital alarm outputs
Multidrop RS232
3 4-20mA current outputs
Environmental Conditions Installation Category (Over voltage Category) II Pollution Degree 2
Intended for indoor use only at altitudes
≤
2000 m
Temperature Range 5 - 40°C operating
Humidity Range 0-95% RH, Non-Condensing
Dimensions (HxWxD) 7" x 17" x 23.5" (178 mm x 432 mm x 597 mm)
Weight 50 lb (22.7 kg)
Certifications CE: EN61010-1:90 + A1:92 + A2:95, EN61326 - Class A
1 As defined by the USEPA 2 At constant temperature and voltage 3 Or 10 ppb, whichever is greater
4
Or 20 ppb, whichever is greater
5
Above 1 ppm range, otherwise 20 ppb for lower ranges

Specifications, Approvals, and Warranty Teledyne API - T300U Addendum to T300/T300M Manual
12 06867D DCN7970
2.2. EPA METHOD DESIGNATION
Teledyne API’s T300U carbon monoxide analyzer is designated as a reference method
(RFCA-1093-093) for CO measurement, as defined in 40 CFR Part 53. The official List
of Designated Reference and Equivalent Methods is published in the U.S. Federal
Register – http://www3.epa.gov/ttn/amtic/criteria.html.
2.3. APPROVALS AND CERTIFICATIONS
The Teledyne API Model T300/T300M analyzer was tested and certified for Safety and
Electromagnetic Compatibility (EMC). This section presents the compliance statements
for those requirements and directives.
2.3.1. SAFETY
IEC 61010-1:2001 (3rd Edition), Safety requirements for electrical equipment for
measurement, control, and laboratory use.
CE: 2006/95/EC, Low-Voltage Directive
2.3.2. EMC
EN 61326-1 (IEC 61326-1), Class A Emissions/Industrial Immunity
EN 55011 (CISPR 11), Group 1, Class A Emissions
FCC 47 CFR Part 15B, Class A Emissions
CE: 2004/108/EC, Electromagnetic Compatibility Directive
2.3.3. OTHER TYPE CERTIFICATIONS
MCERTS: Sira MC 050068/05
For additional certifications, please contact Technical Support.

06867D DCN7970 13
3. GETTING STARTED
CAUTION
GENERAL SAFETY HAZARD
To avoid personal injury, always use two persons to lift and carry the
T300/T300M.
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 ESD
protection when working with electronic assemblies will void the instrument
warranty. See A Primer on Electro-Static Discharge of the T300/300M
manual for more information on preventing ESD damage.
CAUTION!
Do not operate this instrument until you’ve removed dust plugs from SAMPLE
and EXHAUST ports on the rear panel!
Note Teledyne API recommends that you store shipping containers/materials for
future use if/when the instrument should be returned to the factory for repair
and/or calibration service. See Warranty section in this manual and shipping
procedures on our Website at http://www.teledyne-api.com under Customer
Support > Return Authorization.
3.1. UNPACKING THE T300U
Unpack and install the T300U per the directions in Sections 3.1 and 3.1.1. of the
T300/T300M manual (P/N 06864).
3.2. INSTRUMENT LAYOUT
The front panel of the T300U is identical to that of the T300/T300M (see Figure 3-1 of
the T300/T300M Operators Manual, P/N 06864). The Rear Panel is also very similar to
that of the T300/T300M (see Figure 3-4 of the T300/T300M Operators Manual, P/N
06864), the only difference being that the instrument’s particulate filter is mounted
externally on the upper left side of the rear panel rather than internally as on the
T300/T300M.
The internal layout of the T300U (Figure 3-1) differs from the T300/T300M due to the
need to create a thermally insulated, convection-heated oven in which the optical bench
temperature is raised and maintained at a high and very stable temperature. Additionally,
there is a multi-tube, high flow Nafiondryer that removes moisture from the sample
gas.

Getting Started Teledyne API - T300U Addendum to T300/T300M Manual
14 06867D DCN7970
Figure 3-1: T300U Internal Layout

Teledyne API - T300U Addendum to T300/T300M Manual Getting Started
06867D DCN7970 15
3.3. CONNECTIONS AND SETUP
The information found in Section 3.3 of the T300/T300M Operators Manual (P/N
06864) is applicable to the T300U with the exceptions of the Analog and Status Output
connections, as described here.
Note To maintain compliance with EMC standards, it is required that the cable
length be no greater than 3 meters for all I/O connections, which include
Analog In, Analog Out, Status Out, Control In, Ethernet/LAN, USB, RS-232,
and RS-485.
3.3.1. ELECTRICAL CONNECTIONS
The electrical connection instructions in the T300/T300M Operators Manual apply
except as differentiated herein.
3.3.1.1. Connecting Analog Outputs
The analog outputs for the T300U are different from those of the T300/T300M. Unlike
the T300/T300M which can include options for measuring both O2and CO, the T300U
is a single gas analyzer (CO) and therefore does not require the fully configurable
version of the analog outputs. The following information replaces the Analog Outputs
Section of the T300/T300M Operators Manual.
The T300U is equipped with several analog output channels accessible through a
connector on the rear panel of the instrument:
•Channels A1 and A2 output a signal that is proportional to the CO concentration of
the sample gas.
•The default analog output voltage setting of these channels is 0 to 5 VDC with
a reporting range of 0 to 500 ppb.
•An optional Current Loop output is available for each.
•The output labeled A4 is special. It can be set by the user to output any one a
variety of diagnostic test functions.
•The default analog output voltage setting of these channels is also 0 to 5 VDC.
•See Section 4.2.2 for a list of available functions.
•There is NO optional Current Loop output is available for Channel A4.
Table 3-1 lists the default settings for each of these channels.

Getting Started Teledyne API - T300U Addendum to T300/T300M Manual
16 06867D DCN7970
Table 3-1: Analog Output Data Type Default Settings
PARAMETER CHANNEL DEFAULT SETTING
A1
A2
A3
A4
1
DATA TYPE1 CONC1 CONC2 Not
Available TEST
CHANNEL
RANGE
0 – 5 VDC2
OVERRANGE
ON
REC OFS
0 mVDC
AUTO CAL.
ON
CALIBRATED
NO
OUTPUT
ON
1See Table A-6 of T300/T300M Appendix A for definitions of these DAS data types
2Optional current loop outputs are available for analog output channels A1& A2.
To access these signals attach a strip chart recorder and/or data-logger to the appropriate
analog output connections on the rear panel of the analyzer. Pin-outs for the analog
output connector are:
ANALOG OUT
A1 A2 A3 A4
+ -+ -+ -+ -
Figure 3-2: T300U Analog Output Connector
Table 3-2: Analog Output Pin Outs
Pin Analog Output
Standard Voltage
Output
Current
Loop Option
1
A1
V Out
I Out +
2
Ground
I Out -
3
A2
V Out
I Out +
4
Ground
I Out -
5
A3 NOT USED
6
7
A4
V Out
Not Available
8
Ground
Not Available

Teledyne API - T300U Addendum to T300/T300M Manual Getting Started
06867D DCN7970 17
3.3.2. CONNECTING STATUS OUTPUTS
The information found in Section 3.3.1.5. of the T300/T300M Operators Manual is
correct with the following exception:
Table 3-3: Status Output Pin Assignments
Output #
Status
Definition Condition
1 SYSTEM OK On if no faults are present.
2 CONC VALID On if CO concentration measurement is valid.
If the CO concentration measurement is invalid, this bit is OFF.
3 HIGH RANGE On if unit is in high range of
DUAL
or
AUTO
Range Modes.
4 ZERO CAL On whenever the instruments ZERO point is being calibrated.
5 SPAN CAL On whenever the instruments SPAN point is being calibrated.
6 DIAG MODE On whenever the instrument is in DIAGNOSTIC mode.
7
A-REF On whenever the instrument in is A-REF mode.
8 SPARE
D
EMITTER BUSS The emitters of the transistors on pins 1-8 are bussed together.
+
DC POWER + 5 VDC
Digital Ground The ground level from the analyzer’s internal DC Power Supplies.

Getting Started Teledyne API - T300U Addendum to T300/T300M Manual
18 06867D DCN7970
3.3.3. PNEUMATICS
The pneumatic flow of the T300U is different from the T300/T300M in two ways:
•The addition of a high-flow multi-tube Nafiondryer.
•An additional gas path that passes the sample gas though a CO scrubber used
during the auto-reference cycle.
INSTRUMENT CHASSIS
CO
Scrubber
Flow / Pressure
Sensor PCA
SAMPLE
PRESSURE
SENSOR
FLO W
SENSOR
Sample Gas
Flow Control
SAMPLE GAS
INLET
EXHAUST
GAS OUTLET
/
PUMP
GFC Wheel
Housing
GFC Motor Heat Sync
SAMPLE CHAMBER
Auto-
Reference
Valve
Multi-Tube NafionDryer
3 2
1
NO COM
NC
Figure 3-3: T300U Internal Pneumatic Flow – Basic Configuration