TELEDYNE API T320U Installation and operating instructions

Manual Addendum
Models T320 and T320U
N2O Analyzers
(Addendum to T300/T300M Manual, PN 06864)
© TELEDYNE API (TAPI)
9970 CARROLL CANYON ROAD
SAN DIEGO, CA 92131-1106
USA
Toll-free Phone: [phone]
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: http://www.teledyne-api.com/
Copyright 2011-2016
07406B DCN7347
Teledyne API
29 September 2016

07406B DCN7347 i
SAFETY MESSAGES
Important safety messages are provided throughout this manual. Please read these messages carefully.
A safety message alerts you to potential hazards that could hurt you or others. Each safety message is
associated with a safety alert symbol. These symbols are found in the manual and inside the instrument. The
definition of these symbols is described below:
WARNING: Electrical Shock Hazard
HAZARD: Strong oxidizer
GENERAL WARNING/CAUTION: Read the accompanying
message for specific information.
CAUTION: Hot Surface Warning
Technician Symbol: All operations marked with this symbol are to
be performed by qualified maintenance personnel only.
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.
Electrical Ground: This symbol inside the instrument marks the
central safety grounding point for the instrument.
CAUTION - General Safety Hazard
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 T320/T320U or any other Teledyne API
product can be obtained by contacting Teledyne API’s Technical Support Department:
Phone: [phone]
Email: sda_techsup[email protected]
or by accessing various service options on our website at http://www.teledyne-api.com/.

ii 07406B DCN7347
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!

07406B DCN7347 iii
TABLE OF CONTENTS
1. INTRODUCTION.....................................................................................................................................................................5
2. SPECIFICATIONS, APPROVALS AND WARRANTY ...........................................................................................................7
2.1. Specifications ...................................................................................................................................................................7
2.2. EPA Equivalency Designation..........................................................................................................................................8
2.3. CE Mark Compliance .......................................................................................................................................................8
2.4. Warranty...........................................................................................................................................................................8
3. GETTING STARTED ..............................................................................................................................................................9
3.1. Unpacking the T320/T320U..............................................................................................................................................9
3.2. Initial Operation of the T320/T320U .................................................................................................................................9
3.3. Functional Check..............................................................................................................................................................9
3.4. Initial Calibration.............................................................................................................................................................10
3.4.1. Calibration Gases...................................................................................................................................................10
3.4.2. Internal Pneumatic Flow.........................................................................................................................................11
3.4.3. Pneumatic Connections to T320/T320U Basic Configuration:................................................................................12
3.4.4. Pneumatic Connections to T320/T320U with Internal Valve Options Installed.......................................................13
3.4.5. Pneumatic Connections to T320/T320U in Multipoint Calibration Applications.......................................................14
4. FREQUENTLY ASKED QUESTIONS & GLOSSARY..........................................................................................................15
5. OPTIONAL HARDWARE AND SOFTWARE .......................................................................................................................17
5.1. Calibration Valve Options for the T320/T320U...............................................................................................................17
5.1.1. Zero/Span with common Shutoff valves (Option 50G)............................................................................................18
6. BASIC OPERATION.............................................................................................................................................................19
6.1. Test Functions................................................................................................................................................................19
6.1.1. Selecting a Test Channel Function for Output A4...................................................................................................20
7. ADVANCED FEATURES......................................................................................................................................................21
8. REMOTE OPERATION.........................................................................................................................................................23
8.1.1. Hessen Protocol.....................................................................................................................................................23
9. CALIBRATION PROCEDURES ...........................................................................................................................................25
10. EPA PROTOCOL CALIBRATION .....................................................................................................................................27
11. PRINCIPLES OF OPERATION..........................................................................................................................................29
12.MAINTENANCE SCHEDULE.............................................................................................................................................31
13. TROUBLESHOOTING & SERVICE...................................................................................................................................33
LIST OF FIGURES
Figure 3-1. T320 Pneumatic Flow ............................................................................................................................11
Figure 3-2. T320U Pneumatic Flow..........................................................................................................................11
Figure 3-2. Pneumatic Connections, Basic Configuration Using Gas Dilution Calibrator........................................12
Figure 3-3. Pneumatic Connections, Basic Configuration Using Bottled Span Gas................................................12
Figure 3-4. Pneumatics: Option Z/S Valve with Shutoff Valve for Pressurized Span and Atmospheric Zero..........13
Figure 3-5. Pneumatics: Option Z/S without Shutoff Valve......................................................................................13
Figure 3-6. Pneumatics: Option Z/S Valve with Common Shutoff Valve for Pressurized Zero and Span...............14
Figure 5-1. Internal Pneumatic Flow, Option Zero/Span with Common Shutoff Valves ..........................................18
LIST OF TABLES
Table 2-1. T320/T320U Basic Unit Specifications......................................................................................................7
Table 5-1. T320/T320U Available Valve Options .....................................................................................................17
Table 5-2. Zero/Span/Shutoff Valve Operating States for Option 50G....................................................................18
Table 6-1. Test Functions Defined ...........................................................................................................................19
Table 6-2. Test Channels Functions Available on the T320/T320U’s Analog Output..............................................20

TABLE OF CONTENTS Teledyne API T320/T320U Addendum to T300/T300M Manual
iv 07406B DCN7347
LIST OF APPENDICES
APPENDIX A – MENU TREES and SOFTWARE DOCUMENTATION
APPENDIX B –SPARE PARTS LIST
APPENDIX C - REPAIR QUESTIONNAIRE
APPENDIX D - SCHEMATICS

07406B DCN7347 5
1. INTRODUCTION
The T320 and T320U are Gas Filter Correlation (GFC) analyzers that are designed to measure low level and
trace level nitrous oxide (N2O), respectively. The primary difference between the models is their maximum
operating range; 1000 ppm for the T320 and 200 ppm for the T320U. The T320 and T320U are designed to be
used for monitoring background levels of N2O in the atmosphere, byproducts of combustion products and
contamination of bottled gases.
This addendum is a supplement to the T300/T300M manual (P/N 06864) to facilitate setup, operation,
calibration, troubleshooting and repair of T320 and T320U nitrous oxide (N2O) analyzers. Most of the basic set
up information, operating instructions as well as maintenance, troubleshooting and repair methods are the same
for the T320/T320U and can be found in the T300/T300M manual (P/N 06864). The T320 is very similar to the
T300M, and the T320U is very similar to the T300:
T320 = T300M T320U = T300
When using the T300/T300M manual, it is necessary to substitute the words nitrous oxide for carbon monoxide
and the chemical abbreviation N2Ofor CO:
Carbon Monoxide →Nitrous Oxide CO →N2O
There are six major differences between the T320/T320U and their counterpart models, T300M/T300:
•Operating wavelength: A different photo detector is used that closely matches the peak absorption
wavelength of N2O.
•Gas Filter Correlation Filter (GFC) wheel: The GFC wheel is filled with N2O rather than CO to
correlate properly with N2O.
•Software: Display text strings, variable names and variable values reflect the difference in gas name
and physical characteristic.Wherever “CO” is displayed on the T300/T300M “N2O” will be displayed on
the T320/T320U.
•Calibration Methods: There are no specialized USEPA calibration methods since these methods
currently do not exist.
•Calibration Gases: Since there are no readily available low cost N2O scrubbers and traditional zero air
generators like the TAPI model 701, which do not remove N2O, zero gas must be either N2or synthetic
air - especially for the T320U.
•Calibration Valve Options:Due to there being no N2O scrubbers or traditional zero air generators for
either the T320 or the T320U, Options 51B and 51C for the T300M and T300 are not available for the
T320 or T320U.
NOTE
The information contained in this addendum is relevant to T320/T320U analyzers, some of which may
not be applicable to the current version of software.

Introduction Teledyne API T320/T320U Addendum to T300/T300M Manual
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07406B DCN7347 7
2. SPECIFICATIONS, APPROVALS AND WARRANTY
This section provides the specifications for the T320 and the T320U analyzers, and references approvals and
warranty.
2.1. SPECIFICATIONS
Specifications differ between the T320 and the T320U analyzers for Ranges, Noise, Lower Detectable Limit and
Drift.
Table 2-1. T320/T320U Basic Unit Specifications
Parameter Model T320 Model T320U
Ranges Min: 0-1 ppm Full scale 0-200 ppb Full scale
Max: 0-1000 ppm Full scale (selectable, dual
ranges and auto ranging supported) 0-200 ppm Full scale (selectable, dual ranges and auto ranging supported)
Measurement Units ppb, ppm, µg/m
3
, mg/m
3
(selectable)
Zero Noise
1,2
< 0.02 ppm (RMS) < 5 ppb (RMS)
Span Noise
1, 2, 3
< 0.5% of reading RMS over 8 ppm < 0.5% of reading RMS over 2 ppm
Lower Detectable Limit
1,2
< 0.04 ppm < 10 ppb
Zero Drift (24 hours)
2
< 0.1 ppm < 25 ppb
Span Drift (24 hours)
2,
4
< 0.5% of reading < 0.5% of reading
Lag Time
1
<10 sec
Rise/Fall Time
1
<60 sec to 95%
Linearity
6
1% of full scale
Precision
1,
5
0.5% reading
Sample Flow Rate 800 cm
3
/min. ± 10%
Voltage Coefficient < 0.05 % of reading per V
Power Requirements 100V-120V, 220V-240V, 50/60 Hz
Analog Output Ranges 10V, 5V, 1V, 0.1V (selectable)
Recorder Offset ±10%
Analog Output Resolution 1 part in 4096 of selected full-scale voltage
Included I/O
1 Ethernet: 10/100Base-T
2 RS-232 (300 – 115,200 baud)
2 USB device ports
8 opto-isolated digital status outputs
6 opto-isolated digital control inputs
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

Specifications, Approvals and Warranty Teledyne API T320/T320U Addendum to T300/T300M Manual
8 07406B DCN7347
Parameter
Model T320
Model T320U
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)
Environmental Conditions Installation Category (Over voltage Category) II Pollution Degree 2
Certifications CE: IEC 61010-1:2001
North American: cNEMKO (Canada): CAN/CSA-C22.2 No. 61010-1-04
NEMKO-CCL (US): UL No. 61010-1 (2nd Edition)
1
As defined by the USEPA
2 At constant temperature and sample pressure
3
Or 20 ppb, whichever is greater
4
Or 10 ppb, whichever is greater
5 Or LDL whichever is greater
6
For values greater than twice the LDL
2.2. EPA EQUIVALENCY DESIGNATION
There is no US EPA reference method for the measurement of nitrous oxide; therefore, neither the T320 nor the
T320U are designated as reference or equivalent methods. Hence, the EPA Protocol Calibration section of the
Model T300/T300M Operation Manual does not apply.
2.3. CE MARK COMPLIANCE
See the CE Mark Compliance section of the T300/T300M manual (P/N 06864).
2.4. WARRANTY
See the Warranty page of the T300/T300M manual (P/N 06864).

07406B DCN7347 9
3. GETTING STARTED
3.1. UNPACKING THE T320/T320U
Follow the unpacking directions in the Getting Started section of the T300/T300M manual (P/N 06864); note that
the Final Test and Validation Data Sheet for the T320 or the T320U are unique.
3.2. INITIAL OPERATION OF THE T320/T320U
The analyzer should be started and allowed to warm up; a functional check followed by calibration should be
performed. The process for starting and warming up the T320/T320U is identical to that described in the Initial
Operation section of the T300/T300M Operators Manual (P/N 06864).
3.3. FUNCTIONAL CHECK
The functional check information also in the Initial Operation section of the T300/T300M Operators Manual (P/N
06864) is applicable to the T320/T320U with the following exception(s).
The Test functions available from the front panel of the T320 or T320U are:
1
These range displays appear if the
instrument’s reporting ranges are set for
either the DUAL to AUTO modes.
2
Not in “U” models.
3
Only in “U” models.
4
Only appears if analog output A4 is
actively reporting a TEST FUNCTION.
SAMPLE RANGE=50.000 PPM N2O= XXXX
<TST TST>CAL SETUP
Toggle <TST TST> buttons
to scroll through list of
functions
·RANGE=[Value] PPB
·RANGE1=[Value] PPB
1
·RANGE2=[Value] PPB
1
·STABIL=[Value] PPM or PPB
·N2O MEAS=[Value] MV
·N2O REF=[Value] MV
·MR RATIO=[Value]
·PRES=[Value] IN-HG-A
·SAMP FL=[Value] CC/M
·SAMPLE TEMP=[Value]ºC
2
·BENCH TEMP=[Value]ºC
·WHEEL TEMP=[Value]ºC
·OVEN TEMP=[Value]ºC
3
·BOX TEMP=[Value]ºC
2
·PHT DRIVE=[Value] MV
·SLOPE=[Value]
·OFFSET=[Value]
·TEST=[Value] MV
4
·TIME=[HH:MM:SS]

Getting Started Teledyne API T320/T320U Addendum to T300/T300M Manual
10 07406B DCN7347
3.4. INITIAL CALIBRATION
3.4.1. CALIBRATION GASES
The information found in the Calibration Gases section of the T300/T300M Operators Manual (P/N 06864) is
applicable to the T320/T320U with the following exceptions:
ZERO GAS
Zero gas is similar in chemical composition to the atmosphere that is to be measured but scrubbed of all
components that might affect the analyzers readings, in this case N2O and water vapor. For the
T320/T320U this gas MUST be synthetic air, ultra zero air or nitrogen (N2).
NOTE
Zero air created by a Zero Air Generator like the T-API Model T701 should not be used since the T701
does not scrub N2O. Likewise since there are no effective and convenient catalytic, absorptive or
reactive scrubbers for N2O, T-API does not offer a zero scrubber cartridge.
SPAN GAS
Span gas is specifically mixed to match the chemical composition of the type of gas being measured at
near full scale of the desired measurement range. In this case, N2O measurements made with the
T320/T320U analyzer, it is recommended that you use a span gas with a N2O concentration equal to
80% of the measurement range for your application.
EXAMPLE: If the application is to measure between 0 ppm and 500 ppm, an appropriate span gas
concentration would be 400 ppm N2O in N2.
Some applications require a multipoint calibration procedure where span gases of different
concentrations are applied to the analyzer under test. We recommend using a bottle of calibrated N2O
gas of higher concentration in conjunction with a gas dilution calibrator such as a Teledyne Instruments
Model T700. This type of calibrator precisely mixes a high concentration gas from with zero gas (both
supplied externally as either synthetic air or N2) to accurately produce span gas of the correct
concentration. Linearity profiles can be automated with this model and run unattended over night.
Currently there are no Standard Reference Material (SRM) N2O gases available off-the-shelf from NIST
(National Institute of Standards and Technology) therefore it is essential that span gas be purchased
from a reputable supplier and that the gas be traceable to a reputable national standards laboratory.

Teledyne API T320/T320U Addendum to T300/T300M Manual Getting Started
07406B DCN7347 11
3.4.2. INTERNAL PNEUMATIC FLOW
The T320 internal pneumatic flow is illustrated in Figure 3-1.
The T320U internal pneumatic flow is illustrated in Figure 3-2.
INSTRUMENT CHASSIS
Flow / Pressure
Sensor PCA
SAMPLE
PRESSURE
SENSOR
FLOW
SENSOR
Sample Gas
Flow Control
SAMPLE GAS
INLET
EXHAUST
GAS OUTLET
Particulate Filter
PUMP
GFC Wheel
Housing
GFC Motor Heat Sync
SAMPLE CHAMBER
Figure 3-1. T320 Pneumatic Flow
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
Multi-Tube NafionDryer
Figure 3-2. T320U Pneumatic Flow

Getting Started Teledyne API T320/T320U Addendum to T300/T300M Manual
12 07406B DCN7347
3.4.3. PNEUMATIC CONNECTIONS TO T320/T320U BASIC CONFIGURATION:
The information found in the Pneumatic Connections section of the T300/T300M Operators Manual (P/N 06864)
is applicable to the T320/T320U with the following changes:
•Synthetic air, ultra-zero air or N2should be used as the zero gas rather than a Zero Gas Generator like
the TAPI Model 701. The following figures document this difference.
Source of
SAMPLE GAS
Removed during
calibration
VENT
Calibrated N
2
O
Gas
at 100x span gas
concentration
VENT here if input
is pressurized
Chassis
PRESSURE SPAN
IZS
SAMPLE
EXHAUST
VENT SPAN
Model T700 Gas
Dilution
Calibrator
Zero Gas
Synthetic Air,
Ultra-Zero Air,
N
2
Figure 3-3. Pneumatic Connections, Basic Configuration Using Gas Dilution Calibrator
Source of
SAMPLE GAS
Removed during
calibration
VENT
Calibrated
N
2
O Gas
at span gas
concentration
VENT here if input
is pressurized
Chassis
PRESSURE SPAN
IZS
SAMPLE
EXHAUST
VENT SPAN
Zero Gas
Synthetic Air,
Ultra-Zero Air,
N
2
Figure 3-4. Pneumatic Connections, Basic Configuration Using Bottled Span Gas

Teledyne API T320/T320U Addendum to T300/T300M Manual Getting Started
07406B DCN7347 13
3.4.4. PNEUMATIC CONNECTIONS TO T320/T320U WITH INTERNAL VALVE
OPTIONS INSTALLED
•The following figures show the pneumatic set up for T320/T320U analyzers with one of the three
available internal valve options installed. For more information on these options see Section 5 of this
addendum.
Source of
SAMPLE GAS
VENT
Calibrated
N2O Gas
at span gas
concentration
VENT
here if input
is pressurized
Chassis
PRESSURE SPAN
IZS
SAMPLE
EXHAUST
VENT SPAN
VENT
Zero Gas
Synthetic Air,
Ultra-Zero Air,
N
2
Figure 3-5. Pneumatics: Option Z/S Valve with Shutoff Valve for Pressurized Span and Atmospheric Zero
Source of
SAMPLE GAS
Removed during
calibration
Calibrated
N2OGas
at span gas
concentration
VENT here if input
is pressurized
Chassis
PRESSURE SPAN
IZS
SAMPLE
EXHAUST
VENT SPAN
VENT
Zero Gas
Synthetic Air,
Ultra-Zero Air,
N
2
VENT
Figure 3-6. Pneumatics: Option Z/S without Shutoff Valve

Getting Started Teledyne API T320/T320U Addendum to T300/T300M Manual
14 07406B DCN7347
Source of
SAMPLE GAS
VENT
Calibrated
N
2
O Gas
at span gas
concentration
VENT here if input
is pressurized
Chassis
PRESSURE SPAN
IZS
SAMPLE
EXHAUST
VENT SPAN
Zero Gas
Synthetic Air,
Ultra-Zero Air,
N
2
Figure 3-7. Pneumatics: Option Z/S Valve with Common Shutoff Valve for Pressurized Zero and Span
3.4.5. PNEUMATIC CONNECTIONS TO T320/T320U IN MULTIPOINT CALIBRATION
APPLICATIONS
Some applications require multipoint calibration checks where Span gas of several different concentrations is
needed. We recommend using high-concentration, certified, calibration gas supplied to the analyzer through a
gas dilution calibrator such as a Teledyne API T700. This type of calibrator precisely mixes span gas and zero
air to produce max concentration levels between 0 ppm and the concentration of the certified gas. This means
that both the source of zero air and span gas must be connected to the calibrator whose output is then
connected to the span inlet on the rear panel of the instrument.

07406B DCN7347 15
4. FREQUENTLY ASKED QUESTIONS & GLOSSARY
The information found in the Frequently Asked Questions section of the T300/T300M Operators Manual (P/N
06864) is applicable to the T320/T320U.

Frequently Asked Questions & Glossary Teledyne API T320/T320U Addendum to T300/T300M Manual
16 07406B DCN7347
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07406B DCN7347 17
5. OPTIONAL HARDWARE AND SOFTWARE
Not all options are available for the T320 and T320U as are available for the T300 and T300M.
5.1. CALIBRATION VALVE OPTIONS FOR THE
T320/T320U
There three valve options available for the T320 and T320U analyzers
Table 5-1. T320/T320U Available Valve Options
OPTION
NO.
DESCRIPTION
VALVES AND IZS
50A Ambient Zero/Ambient Span Valves
50B Zero / Span Valve with shut-off valve (Ambient Zero/ Pressurized Span)
50G
Zero / Span Valves with Shut-off Valve (Pressurized Zero/Pressurized Span)
For descriptions of options 50A and 50B and their use please see the Calibration Valves Options section of the
T300/T300M Operators Manual (P/N 06864) but noting that wherever a zero air generator like the TAPI 701 is
shown, synthetic air, ultra-zero air, or N2 should be substituted. For a description of option 50G please see
Section 5.1.1 of this addendum.
For assistance with ordering these options, please contact the Sales department of Teledyne API at:
TOLL-FREE:
800-324-5190
FAX:
[phone]
TEL:
[phone]
E-MAIL:
[e-mail]
WEB SITE:
www.teledyne-api.com

Optional Hardware and Software Teledyne API T320/T320U Addendum to T300/T300M Manual
18 07406B DCN7347
5.1.1. ZERO/SPAN WITH COMMON SHUTOFF VALVES (OPTION 50G)
Option 50G is operationally and pneumatically similar to Option 50B (see T300/T300M manual), except that both
the zero and span gases are applied to the analyzer under pressure. This option is designed to be used with
bottled zero and span gases. A shutoff valve is used to stop flow from the bottles during sample mode and a
common vent is used to bring the pressure of the calibration gas down to local ambient pressure.
Table 5-2. Zero/Span/Shutoff Valve Operating States for Option 50G
MODE
VALVE
CONDITION
SAMPLE
(Normal State)
Sample/Cal Open to SAMPLE inlet
Zero/Span Open to internal ZERO AIR inlet
Shutoff Valve Closed
ZERO CAL
Sample/Cal Open to ZERO/SPAN valve
Zero/Span Open to ZERO AIR inlet
Shutoff Valve Open to ZERO/SPAN valve
SPAN CAL
Sample/Cal Open to ZERO/SPAN valve
Zero/Span Open to SPAN inlet
Shutoff Valve Open to ZERO/SPAN valve
INSTRUMENT CHASSIS
Flow / Pressure
Sensor PCA
SAMPLE
PRESSURE
SENSOR
FLOW
SENSOR
Sample Gas
Flow Control
SAMPLE GAS
INLET
EXHAUST
GAS OUTLET
Particulate Filter
PUMP
IZS INLET
PRESSURE
SPAN INLET
VENT SPAN
OUTLET
Sample / Cal
Valve
Zero / Span
Valve
GFC Wheel
Housing
GFC Motor Heat
Sync
SAMPLE CHAMBER
Zero
Gas
In
Sample
Gas
In
Span
Gas
In
Shutoff
Valve
Figure 5-1. Internal Pneumatic Flow, Option Zero/Span with Common Shutoff Valves