AMI 1000RS User manual

Made in the USA
AMI
Portable Trace Oxygen
Analyzer Manual
Model 1000RS
Advanced Micro Instruments, Inc.

i. Advanced Micro Instruments Inc. Page ii
Contents
Intrinsic Safety Notes and Warnings (Very Important Please Read !!!) ............................................................................2
Remarques et avertissements de sécurité intrinsèque (Très important Prière de lire !!!) ...............................................2
Warning on Using the Appropriate Charger for 61010 Assesment...................................................................................3
Basics of trace oxygen .......................................................................................................................................................3
The Model 1000RS ............................................................................................................................................................5
Powering up the analyzer: ..................................................................................................................................................9
Ranging: .............................................................................................................................................................................9
Calibration: ........................................................................................................................................................................9
Sensor Life: ......................................................................................................................................................................10
Data logging.....................................................................................................................................................................10
Sample Line Connection: .................................................................................................................................................11
Valves: .............................................................................................................................................................................12
Measuring a sample: ........................................................................................................................................................13
Data Logging Feature: ......................................................................................................................................................13
RFI Interference:..............................................................................................................................................................13
Battery Charge: ................................................................................................................................................................13
Output Connections: ........................................................................................................................................................15
Calibration Procedure: .........................................................................................................................................................16
Air calibration ..................................................................................................................................................................17
Low level gas calibration .................................................................................................................................................18
Bleeding the regulator.....................................................................................................................................................18
Low level Calibration .......................................................................................................................................................18
Using the Advanced Features: .............................................................................................................................................19
Data Logging Procedure:..................................................................................................................................................19
Sensor tracking:...............................................................................................................................................................19
Calibration History: .........................................................................................................................................................20
Turn-on/turn-off history: ................................................................................................................................................20
Periodic Calibration: ........................................................................................................................................................21
Sensor Replacement: .......................................................................................................................................................21
Sensor Replacement: .......................................................................................................................................................22
Common Calibration Errors: .............................................................................................................................................23
Sensor Going Negative: ....................................................................................................................................................24
Accessories...............................................................................................................................................................................26
Carrying case........................................................................................................................................................................26
Calibration Tubing................................................................................................................................................................26
User Interface CD .................................................................................................................................................................27
Troubleshooting...................................................................................................................................................................28
Specifications ...........................................................................................................................................................................30
Disclaimer.................................................................................................................................................................................31

Advanced Micro Instruments, Inc. Page 1
Preface
Thank you!
We would like to thank you for purchasing the most advanced portable trace oxygen analyzer available. The AMI
1000RS is simple, but complete. It includes our patented cell block, (patent numbers 5,728,289 and 6,675,629),
and our patented sensor. It uses an integral 4-way valve that provides a bypass mode with the sensor sealed
off (both inlet and outlet simultaneously), and a measurement mode that connects the sensor to the sample. A
sample source can be connected with a single plug-in connection and the analyzer and tubing purged before
the sensor is exposed to the gas. The result is immediate and accurate trace oxygen measurement
without the long come-down times that traditional analyzers are subject to.
The electronics is microprocessor-based with a high definition 24-bit Analog to digital converter for
high precision performance with no range changes necessary.
Please verify that the analyzer was not damaged in transit. If so please contact the shipper as well as AMI.
DO NOT ROTATE THE ON/OFF SELECTOR VALVE (LOCATED ON THE FRONT OF T H E ANALYZER) BEFORE YOU
CONNECT THE ANALYZER TO A SOURCE OF L O W OXYGEN LEVEL GAS. Read this m anu al before you
operate the an al yze r .
Caution
Read and understand this manual fully before attempting to use the instrument. In particular understand the
hazards associated with using flammable or poisonous gases, and associated with the contents of the sensor
used. Please read the next section that discusses intrinsic safety.
Address
Advanced Micro Instruments,Inc.
225 Paularino Ave
Costa Mesa, CA 92626
[phone]
www.AMIO2.com
Last Revised: 08/31/2018

Advanced Micro Instruments, Inc. Page 2
The 1000RS Portable Trace Oxygen Analyzer
Introduction
Intrinsic Safety Notes and Warnings (Very Important Please Read !!!)
1. Do not use the USB Interface and/or the 12VDC Input in a Hazardous Area.
2. A data download device may only be connected to the USB connector of this analyzer in a non-hazardous area
and shall be approved as SELV or Class 2 equipment against UL 60950 or an equivalent IEC standard. The
maximum voltage from a data download device shall not exceed 5.25 VDC.
3. Only connect Intrinsically Safe Equipment to the Analog Out (Parameters Uo=4.65V, Io=47mA, Po=34.8mW,
Ci=30.50µF, Li=0µH)
4. Substitution of any components in this analyzer may effect intrinsic safety.
5. Potential Electrostatic Charging Hazard:
a. No precautions against electrostatic discharge are necessary for portable equipment that has an
enclosure made of plastic, metal or a combination of the two, except where a significant static-
generating mechanism has been identified. Activities such as placing the item in a pocket or on a belt,
operating a keypad or cleaning with a damp cloth, do not present a significant electrostatic risk.
However, where a static-generating mechanism is identified, such as repeated brushing against clothing,
then suitable precautions shall be taken, e.g. the use of anti-static footwear.
b. The certification marking plate is aluminum. Care must be exercised during use to avoid causing sparks
by impact or friction.
6. The analyzer should only be charged in a non-hazardous area using a charger specifically supplied for use with the
unit (for example part number 3ACA13, type TRG1512-A, manufactured by CINCON Electronics Ltd), approved as
SELV or Class 2 equipment against UL 60950-1 or an equivalent IEC standard. The maximum voltage from the
charger shall not exceed 12.0 VDC.
7. Failure to observe any of the above requirements will invalidate the Hazardous Locations certification.
8. Exia means Intrinsically safe.
Remarques et avertissements de sécurité intrinsèque (Très important
Prière de lire !!!)
1. Ne pas utiliser l’interface USB et/ou l’entrée 12 V CC à un endroit dangereux.
2. Un dispositif de téléchargement de données peut uniquement être branché au connecteur USB de cet analyseur
dans une zone non dangereuse et doit être homologué comme équipement TBTS ou équipement de classe 2 en
vertu de la norme UL 60950 ou d'une norme CEI équivalente. La tension maximale provenant d'un dispositif de
téléchargement de données ne doit pas dépasser 5,25 V c.c.
3. Raccorder uniquement un équipement intrinsèquement sûr à la sortie analogique (paramètres Uo=4,65 V, Io=47
mA, Po=34,8 mW, Ci=30,50 µF, Li=0 µH)
4. La substitution de tout composant de cet analyseur peut affecter la sécurité intrinsèque.
5. Danger potentiel de charge électrostatique :
a. Aucune précaution contre la décharge électrostatique n’est nécessaire pour l’équipement portable dont
le boîtier est fait de plastique, de métal ou d’une combinaison des deux, sauf lorsqu’un mécanisme

Advanced Micro Instruments, Inc. Page 3
générant un niveau important d’électricité statique a été identifié. Les activités telles que placer
l’appareil dans une poche ou sur une ceinture, l’utilisation d’un clavier ou le nettoyage à l’aide d’un
chiffon humide ne présentent aucun risque électrostatique significatif. Cependant, lorsqu’un mécanisme
producteur d’électricité statique est identifié, tel que le brossage répété contre des vêtements, des
précautions adéquates doivent alors être prises, telles que l’utilisation de chaussures de sécurité
antistatique.
b. La plaque de marquage de certification est faite d’aluminium. L’utilisation doit se faire prudemment pour
éviter de produire des étincelles par impact ou friction.
6. L'analyseur doit uniquement être chargé dans une zone non dangereuse à l'aide d'un chargeur fourni
spécialement pour cet appareil (par exemple, référence 3ACA13, type TRG1512-A, fabriqué par CINCON
Electronics Ltd), homologué comme équipement TBTS ou équipement de classe 2 en vertu de la norme UL 60950-
1 ou d'une norme CEI équivalente. La tension maximale provenant du chargeur ne doit pas dépasser 12,0 V c.c.
7. Tout non-respect des exigences ci-dessus invalidera l'homologation pour zones dangereuses.
8. Exia signifie intrinsèquement sûr.
Warning on Using the Appropriate Charger for 61010 Assessment
1. The charger for this unit must be rated at a maximum of 12V, 1A and approved as SELV or Class 2
equipment against UL 60950-1 or an equivalent IEC standard.
Basics of trace oxygen
Oxygen is unlike any other gas in that it is very reactive, and a major constituent of air. In many industrial
processes it is a very undesirable contaminant, and levels of oxygen must be kept in the low part-per-million
range. When measuring these levels, it is essential to take precautions against oxygen from the air leaking into
and contaminating the gas causing erroneously high readings. The model 1000RS analyzer makes taking these
precautions easy.
Oxygen is present in air at 209,000 parts per million (ppm). In a typical process stream, oxygen levels above
10ppm are a concern. If the sensor in the analyzer is exposed to air, it has to come down from 209,000ppm to
below 10ppm to get a good reading. Any electrochemical sensor will take some time to do this, depending on
how long it has been exposed. AMI sensors are the fastest in the industry, and the AMI cell block is very
effective at purging air from the sensor, but after a one minute air exposure even an AMI sensor/analyzer
combination will take up to 15 minutes to get down to 10ppm. The model 1000RS contains a unique 4-way
valve that allows you to plumb the analyzer up to the sample point and thus purge the sample tubing and the
analyzer cell block of air without exposing the sensor to the air. After a minute of purging, simply turn the
analyzer valve to the ON position and the sample is allowed to flow to the sensor which rapidly comes to a valid
reading. Competitive analyzer designs expose the sensor to the surge of air caught in the sample tubing,
causing them to take a considerable time to stabilize at the correct reading.

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Having taken the measurement, the sample with its low oxygen content can be sealed around the sensor by
turning the analyzer valve back to the OFF position. Now the analyzer can be moved without worrying about
contaminating the sensor with air.
It is important to understand that at the ppm levels we are concerned with, oxygen readily diffuses through
plastic materials, some worse than others. It is acceptable to use O rings, but any plastic tubing in the sample
system must be made of special low permeability material, such as the sample tubing AMI supplies.
Trace oxygen is measured using a disposable electrochemical sensor that is specific to oxygen. It wears out in
use like a flashlight battery, and thus has to be replaced occasionally, typically once per year. AMI makes a
proprietary sensor line that gives particularly good performance in aggressive industrial applications –the T-2 is
resistant to H2S up to 10ppm, while the T-4 can tolerate up to 500ppm H2S through its warrantied life.

Advanced Micro Instruments, Inc. Page 5
The Model 1000RS
Figure 1 Front view
The Model 1000RS provides all the features required to make measuring and spot checking trace oxygen levels
simple. It includes a complete sample system together with a state-of-the-art electronics package that provides
USB connectivity, datalogging of the O2 readings, battery voltage and temperature, and many other advanced
features such as calibration history and sensor life indication.
With the optional user interface, a USB cable and a standard PC or laptop, the data log of oxygen readings can
be downloaded into the computer and presented either as a spreadsheet or a graph.
The batteries typically last about 500 hours of operation before they need to be recharged.

Advanced Micro Instruments, Inc. Page 6
Figure 2 Back v ie w
On the back the analyzer is a quick-disconnect fitting for the sample inlet. It is provided so as to minimize wear
on the fitting - it is not required to seal gas in the analyzer. Conventional compression fittings cannot be used
more than a few times without damaging them to the point that they leak enough to cause erroneous readings.
An exhaust fitting is also provided suitable for a length of silicone tubing should you need to vent the exhaust
somewhere (for example, out of the cab of a truck). A charging socket and an analog output with a 0-1V signal,
and a standard USB type B connector such as is often used on a printer are also provided.
Charging socket
Sample exhaust
Sample Inlet
USB Connector
Analog 0-1V
Output
Charging LED

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Oxygen Sensor:
AMI makes a series of proprietary electrochemical sensors. The particular one used depends on the level of
hydrogen sulfide in the gas stream –the standard T-2 sensor can tolerate small amounts of hydrogen sulfide (up to 10ppm),
while the T-4 tolerates up to 500ppm of hydrogen sulfide. The sensor generates an output current in proportion
to the amount of oxygen present, and has zero output in the absence of oxygen, thus avoiding any requirement
to zero the analyzer. The sensor is linear throughout its range. The span calibration may be performed using
standard span gases or ambient air.
Sensor Warranty:
The sensor is warranted to operate for a period determined by its class. If the sensor ceases to operate
correctly before this time has elapsed, return it to AMI for evaluation. If there is any evidence of defective
material or workmanship the sensor will be replaced on a pro-rated basis.
NOTE: Any evidence of abuse or physical damage, such as a torn membrane, will not be covered under the
warranty.
Instrument Warranty:
Any failure of material or workmanship will be repaired free of charge for a period of two years from the original
purchase (shipping date from AMI) of the instrument. AMI will also pay for one way ground shipment (back to
the user).
This warranty does not cover the sensor, which is covered by its own warranty (see above). Any indication of
abuse or tampering will void the warranty.

Advanced Micro Instruments, Inc. Page 8
Using the Analyzer
Introduction:
The AMI model 1000RS analyzer is meant to be used for spot checking gas samples for trace levels of oxygen
contamination. “Trace” means oxygen at levels from zero to about 1000ppm. It does provide percent ranges
but these are intended only to allow for air calibration if desired. It uses a special oxygen sensor that is easily
field replaceable, and it provides a number of features that make the whole process as easy as possible.
The analyzer is shipped with its batteries fully charged. Since NiCd batteries self-discharge, charge it overnight
before using it. When charged the batteries will last for up to 500 hours of continuous use.
The analyzer automatically reads the oxygen level and scales the display so that it always shows the best
resolution. The voltage output and the data log use a preset range (normally 0-100ppm) that can be changed
with the PC interface program. The data log also records over-range excursions up to ten times the range. By
default, it will store data points up to 1000ppm, even though the range is set to 100ppm.
When the analyzer is first turned on the data log function is always off. If you wish to data log you have to manually
turn it on, by pressing and holding the LOG button on the front panel for one second.
Although the analyzer is rugged, and built into a steel case, it should nevertheless be treated carefully. Do not
expose it to rain, or sudden temperature changes. For example, taking it from a heated building to the outdoors
in winter will cause a rapid temperature change that will temporarily upset the temperature compensation, and
it will take a little while for the sensor to come back to equilibrium. Low temperatures below 50°F will slow the
chemical reactions in the sensor and cause it to respond more slowly. If the temperature drops below about 26°F
the sensor can freeze, which will damage it. If it is to be used outside in cold weather, keep the analyzer in a
warm place such as the cab of a truck, and run the sample line into it. Make sure that you run an exhaust line so
that the sample vents outside of the cab of your truck!
For best reliability, transport it in its carrying case and avoid exposing it to extreme temperatures.
Once you have finished taking a measurement, MAKE SURE THE ON/OFF VALVE IS TURNED TO OFF before
disconnecting the sample. Failure to do so will make the sensor very sluggish.