Ametek Dycor CG1000-RTP User manual

Dycor CG1000-RTP
User Manual
Thermox
150 Freeport Road
Pittsburgh, PA 15238
PN 90355VE, Rev. N

ii | Dycor CG1000-RTP Oxygen Analyzer
© 2012 AMETEK
This manual is a guide for the use of the Dycor CG1000-RTP. Data herein has been veried and validated and is believed adequate for the intended
use of this instrument. If the instrument or procedures are used for purposes over and above the capabilities specied herein, conrmation of their
validity and suitability should be obtained; otherwise, AMETEK does not guarantee results and assumes no obligation or liability. This publication is not
a license to operate under, or a recommendation to infringe upon, and process patents.
USA - HEADQUARTERS
AMETEK Process Instruments
150 Freeport Road
Pittsburgh, PA 15238, USA
Phone: [phone]
Fax: [phone]
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AMETEK Process Instruments
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Newark, Delaware 19702, USA
Phone: [phone] (Main)
800-537-6044 (Service)
800-222-6789 (Ordering)
Fax: [phone]
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AMETEK Process Instruments
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Houston, Texas 77095, USA
Phone: [phone]
Fax: [phone]
CANADA
AMETEK Process Instruments
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Calgary, Alberta
Canada T1Y 7H9
Phone: [phone]
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GERMANY
AMETEK GmbH
Postfach 2165
D-40644 Meerbusch
OR
Rudolf-Diesel Strasse 16
D-40670 Meerbusch
Germany
Phone: [phone]
Fax: [phone]
SINGAPORE
AMETEK Singapore PVT. Ltd.
10 Ang Mo Kio Street 65
#05-12 Techpoint
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Republic of Singapore
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Phone: [phone]
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CHINA
AMETEK Process Instruments
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No. 30 Tian Yao Qiao Road
Shanghai, 200030
Phone: [phone]
Fax: [phone]
Ofces

| iii
Contents
OFFICES .................................................................................................................ii
European Standards Information....................................................................... x
CHAPTER 1 CG1000-RTP Oxygen Analyzer
Basic Elements of the Sensor............................................................................1-1
The Oxygen Measuring Cell ............................................................................1-2
Hydrocarbons...............................................................................................1-3
Proper Sensor Operations..........................................................................1-4
Technical Support...............................................................................................1-5
CHAPTER 2 Specications
CHAPTER 3 Installation
Mechanical Installation .....................................................................................3-2
PPM Measurement Suggestions......................................................................3-6
Electrical Installation..........................................................................................3-7
Current Output Connections ....................................................................3-7
Alarm Contact Connections ......................................................................3-8
RS-232 Communications Connections.....................................................3-9
Select 115/230 Volt Operation ....................................................................3-9
Start-up and User Interface ............................................................................3-10
System Start-Up .........................................................................................3-11
Password Restrictions ...............................................................................3-11
Auto Ranging Feature ...............................................................................3-11
Keypad Keys...............................................................................................3-12
Selecting Menu Options...........................................................................3-12
Exiting Menu Options ..............................................................................3-12
Automatic Menu Exit Feature..................................................................3-13
On-Line Help .............................................................................................3-13
CHAPTER 4 User Interface
Passwords ............................................................................................................4-1
Setup Key.............................................................................................................4-2
Display...........................................................................................................4-2
Setting Up the Display................................................................................4-3
Set Pressure...................................................................................................4-4
System Tests..................................................................................................4-4
System Serial # ............................................................................................4-5
Primary Calibration....................................................................................4-5
Communication ...........................................................................................4-6
Carrier Gas....................................................................................................4-6
Analog Range Key..............................................................................................4-8
Analog Output Port.....................................................................................4-9
Set Current Range Option .........................................................................4-9

iv | Dycor CG1000-RTP Oxygen Analyzer
Set Track/Hold Option ..............................................................................4-10
Set Current Mode Option ........................................................................4-11
Output Filtering Option...........................................................................4-12
Select Function Option .............................................................................4-12
Alarm Key..........................................................................................................4-13
Overview of Alarm Functions .................................................................4-14
Alarm Set Points.........................................................................................4-14
Alarm Configure........................................................................................4-16
Relay Configure .........................................................................................4-16
Select Function ...........................................................................................4-17
Service Alarm .............................................................................................4-17
Watchdog Relay .........................................................................................4-18
Exception Log.............................................................................................4-18
CHAPTER 5 Calibrate Key
Overview .............................................................................................................5-1
Calibration...........................................................................................................5-2
Calibration vs. Verification Operations....................................................5-2
Span vs. Zero Gas ........................................................................................5-2
Aborting a Calibration ................................................................................5-2
Initiate Cal ...........................................................................................................5-3
Initiate Verify.......................................................................................................5-5
Cal/Verify Data....................................................................................................5-7
Cal Gas Value ......................................................................................................5-9
Configure Verify ...............................................................................................5-10
Set Clock ............................................................................................................5-11
Set Time and Date .....................................................................................5-11
Recovery Duration ....................................................................................5-12
CHAPTER 6 Maintenance And Troubleshooting
System and Error Messages..............................................................................6-1
System Messages................................................................................................6-2
Error Messages....................................................................................................6-3
Diagnostic Checks..............................................................................................6-5
Thermocouple Checks ................................................................................6-5
Calibration Checks ......................................................................................6-6
AC Power Checks.........................................................................................6-7
Furnace Checks............................................................................................6-7
Cell Checks ...................................................................................................6-7
General Troubleshooting...................................................................................6-8
CHAPTER 7 Parts Replacement
Cell Replacement................................................................................................7-2
Furnace Replacement ........................................................................................7-5
Replacing the Transformer ...............................................................................7-8
Replacing the Backplane Board .......................................................................7-9
Replacing Display/Keypad Modules.............................................................7-10

| v
APPENDIX A Serial Communications
Communication Protocol.................................................................................A-1
Command Message Format.............................................................................A-2
General Serial Communication Commands................................................. A-3
Development Serial Communication Commands....................................... A-4
Command List ...................................................................................................A-5
Responses ...........................................................................................................A-6
Variable Table ..................................................................................................... A-7
APPENDIX B Menu Option Charts
Setup Key Menu................................................................................................ B-1
Calibrate Key Menu .......................................................................................... B-2
Alarm Key Menu ............................................................................................... B-2
Analog Range Key Menu ................................................................................. B-3

vi | Dycor CG1000-RTP Oxygen Analyzer
Safety Notes
WARNINGS, CAUTIONS, and NOTES contained in this manual emphasize
critical instructions as follows:
An operating procedure which, if not strictly observed, may result in
personal injury or environmental contamination.
An operating procedure which, if not strictly observed, may result in dam-
age to the equipment.
Important information that should not be overlooked.
Electrical Safety
Up to 5 kV may be present in the analyzer housings. Always shut down power
source(s) before performing maintenance or troubleshooting. Only a qualified
electrician should make electrical connections and ground checks.
Any use of the equipment in a manner not specified by the manufacturer may
impair the safety protection originally provided by the equipment.
Grounding
Instrument grounding is mandatory. Performance specifications and safety
protection are void if instrument is operated from an improperly grounded
power source.
Verify ground continuity of all equipment before applying power.

| vii
PROTECTIVE CONDUCTOR TERMINAL
(BORNIER DE L’ECRAN DE PROTECTION)
Schutzerde
CAUTION - Risk of electric shock
(ATTENTION-RISQUE DE DÉCHARGE ÉLECTRIQUE)
Achtung - Hochspannung Lebensgefahr
CAUTION - (Refer to accompanying documents)
(ATTENTION-SE RÉFERER AUX DOCUMENTS JOINTS)
Achtung (Beachten Sie beiliegende Dokumente)
CAUTION - Hot Surface
(ATTENTION-SURFACE CHAUDE)
Achtung - Heiße Oberäche
Warning Labels
These symbols may appear on the instrument in order to alert you of existing
Environmental Information (WEEE)
This AMETEK product contains materials that can be reclaimed and recycled.
In some cases the product may contain materials known to be hazardous to the
environment or human health. In order to prevent the release of harmful sub-
stances into the environment and to conserve our natural resources, AMETEK
recommends that you arrange to recycle this product when it reaches its “end of
life.”
Waste Electrical and Electronic Equipment (WEEE) should never be disposed of
in a municipal waste system (residential trash). The Wheelie Bin marking on this
product is a reminder to dispose of the product properly after it has completed
its useful life and been removed from service. Metals, plastics and other compo-
nents are recyclable and you can do your part by one of the following these
steps:
• Whentheequipmentisreadytobedisposedof,takeittoyourlocalor
regional waste collection administration for recycling.
• Insomecases,your“end-of-life”productmaybetradedinforcredit
towards the purchase of new AMETEK instruments. Contact your
dealer to see if this program is available in your area.
• IfyouneedfurtherassistanceinrecyclingyourAMETEKproduct,
contact our office listed in the front of the instruction manual.

viii | Dycor CG1000-RTP Oxygen Analyzer
Electromagnetic Compatibility (EMC)
Read and follow the recommendations in this section to avoid performance
variations or damage to the internal circuits of this equipment when installed
in harsh electrical environments.
The various configurations of the CG1000-RTP should not produce, or fall victim to,
electromagnetic disturbances as specified in the European Union’s EMC Directive.
Strict compliance to the EMC Directive requires that certain installation techniques
and wiring practices are used to prevent or minimize erratic behavior of the Ana-
lyzer or its electronic neighbors. Below are examples of the techniques and wiring
practices to be followed.
In meeting the EMC requirements , the various Analyzer configurations described
in this manual rely heavily on the use of metallic shielded cables used to connect to
the customer’s equipment and power. Foil and braid shielded I/O and DC power
cables are recommended for use in otherwise unprotected situations. In addition,
hard conduit, flexible conduit, and armor around non-shielded wiring also provides
excellent control of radio frequency disturbances. However, use of these shielding
techniques is effective only when the shielding element is connected to the equip-
ment chassis/earth ground at both ends of the cable run. This may cause ground loop
problems in some cases. These should be treated on a case-by-case basis. Discon-
necting one shield ground may not provide sufficient protection depending on the
electronic environment. Connecting one shield ground via a 0.1 microfarad ceramic
capacitor is a technique allowing high frequency shield bonding while avoiding
the AC-ground metal connection. In the case of shielded cables the drain wire or
braid connection must be kept short. A two-inch connection distance between the
shield’s end and the nearest grounded chassis point, ground bar or terminal is highly
recommended. An even greater degree of shield performance can be achieved by
using metallic glands for shielded cable entry into metal enclosures. Expose enough
of the braid/foil/drain where it passes through the gland so that the shield materials
can be wrapped backwards onto the cable jacket and captured inside the gland, and
tightened up against the metal interior.
Inductive loads connected to the low voltage “Alarm Contacts” are not recommend-
ed. However, if this becomes a necessity, adhere to proper techniques and wiring
practices. Install an appropriate transient voltage suppression device (low voltage
MOV, “Transzorb,” or R/C) as close as possible to the inductive device to reduce the
generation of transients. Do not run this type of signal wiring along with other I/O or
DC in the same shielded cable. Inductive load wiring must be separated from other
circuits in conduit by using an additional cable shield on the offending cable.
In general, for optimum protection against high frequency transients and other dis-
turbances, do not allow installation of this Analyzer where its unshieled I/O and DC
circuits are physically mixed with AC mains or any other circuit that could induce

| ix
SPECIAL WARNINGS AND INFORMATION
EQUIPMENT USED IN CLASS I, DIVISION 2 HAZARDOUS LOCATIONS
This Equipment is Suitable for Use in Class I, Division 2, Groups ABCD, T4 or Non-Hazardous
Areas Only.
Division 2 stand-alone Analyzer is not supplied with the 24 VDC power sup-
ply option.)
Explosion Hazard - Substitution of Components May Impair Suitability for
Class I, Division 2.
Risque d’explosion - La substitution de composants peut rendre ce ma-
teriel inacceptable pour les emplacements de Classe I, Division 2.
Explosion Hazard - Do Not Disconnect Equipment Unless Power Has Been
Switched Off or the Area is Known to be Non-Hazardous.
Risque d’explosion - Avant de déconnecter l’équipement, coupez le cou-
rant où vous assurez que l’emplacement est designé non dangereux.
All input and output wiring must be in accordance with Class I, Division 2 wiring methods (NEC
Sec 501.4(b) or CEC 18-152) and in accordance with the authority having jurisdiction.
If the CG1000-RTP is to be powered by a source of 24 VDC other than that supplied by AME-
TEK, the power source’s output must be isolated from hazardous mains voltages using double
or reinforced insulation which has a minimum dielectric strength of 2300 VAC. When the
CG1000-RTP is used in a Class I, Division 2 area, this external power source must be located in a
general-purpose area or be Division 2-approved.

x | Dycor CG1000-RTP Oxygen Analyzer
European Standards Information
Manufacturer’s Name:AMETEK Process Instruments (ISO 9001 Regis-
tered 1995)
Manufacturer’s Address:Process & Analytical Instruments Division
150 Freeport Road
Pittsburgh, PA, 15238 USA
Phone: [phone] Fax: [phone]
EU Representative Address: Dr. Jurgen Gassen
AMETEK Precision Instruments Europe GmbH
Rudolf-Diesel-Strasse 16
D-40670 Meerbusch, Germany
Phone: [phone] Fax: [phone]
declares that the product:
Product Name: CG1000-RTP Oxygen Analyzer
complies with the requirements of EMC Directive 89/336/EEC:
EN 50082-2, Immunity (Heavy Industrial) using:
EN 61000-4-2 Electrostatic Discharge
EN 61000-4-4 Electrical Fast Transients
ENV 50140 RF Radiated
ENV 50204 RF Radiated (pulsed)
ENV 50141 RF Induced
EN 61000-4-8 Magnetic
Emissions using:
EN 55011 Radiated, Class B
and with the low voltage directive 73/23/EEC:
EN 61010-1 (IEC 1010-1), Safety Requirement for Electrical Equip-
ment

| xi
WARRANTY AND CLAIMS
We warrant that any equipment of our own manufacture or manufactured for us pursuant to our
specifications which shall not be, at the time of shipment thereof by or for us, free from defects in mate-
rial or workmanship under normal use and service will be repaired or replaced (at our option) by us
free of charge, provided that written notice of such defect is received by us within twelve (12) months
from date of shipment of portable analyzers or within eighteen (18) months from date of shipment or
twelve (12) months from date of installation of permanent equipment, whichever period is shorter. All
equipment requiring repair or replacement under the warranty shall be returned to us at our factory,
or at such other location as we may designate, transportation prepaid. Such returned equipment shall
be examined by us and if it is found to be defective as a result of defective materials or workmanship,
it shall be repaired or replaced as aforesaid. Our obligation does not include the cost of furnishing any
labor in connection with the installation of such repaired or replaced equipment or parts thereof, nor
does it include the responsibility or cost of transportation. In addition, instead of repairing or replacing
the equipment returned to us as aforesaid, we may, at our option, take back the defective equipment,
and refund in full settlement the purchase price thereof paid by Buyer.
Process photometric analyzers, process moisture analyzers, and sampling systems are warranted to
perform the intended measurement, only in the event that the customer has supplied, and AMETEK
has accepted, valid sample stream composition data, process conditions, and electrical area classification
prior to order acknowledgment. The photometric light sources are warranted for ninety (90) days from
date of shipment. Resale items warranty is limited to the transferable portion of the original equipment
manufacturer’s warranty to AMETEK. If you are equipment from outside the United State, a statement
should appear on the documentation accompanying the equipment being returned declaring that the
goods being returned for repair are American goods, the name of the firm who purchased the goods,
and the shipment date.
The warranty shall not apply to any equipment (or part thereof) which has been tampered with or
altered after leaving our control or which has been replaced by anyone except us, or which has been
subject to misuse, neglect, abuse or improper use. Misuse or abuse of the equipment, or any part thereof,
shall be construed to include, but shall not be limited to, damage by negligence, accident, fire or force
of the elements. Improper use or misapplications shall be construed to include improper or inadequate
protection against shock, vibration, high or low temperature, overpressure, excess voltage and the like,
or operating the equipment with or in a corrosive, explosive or combustible medium, unless the equip-
ment is specifically designed for such service, or exposure to any other service or environment of greater
severity than that for which the equipment was designed.
The warranty does not apply to used or secondhand equipment nor extend to anyone other than the
original purchaser from us.
THIS WARRANTY IS GIVEN AND ACCEPTED IN LIEU OF ALL OTHER WARRANTIES, WHETHER
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION AND WARRANTIES OF FITNESS OR
OF MERCHANTABILITY OTHER THAN AS EXPRESSLY SET FORTH HEREIN, AND OF ALL OTHER
OBLIGATIONS OR LIABILITIES ON OUR PART. IN NO EVENT SHALL WE BE LIABLE UNDER THIS
WARRANTY OR ANY OTHER PROVISION OF THIS AGREEMENT FOR ANY ANTICIPATED OR
LOST PROFITS, INCIDENTAL DAMAGES, CONSEQUENTIAL DAMAGES, TIME CHANGES OR ANY
OTHER LOSSES INCURRED BY THE ORIGINAL PURCHASER OR ANY THIRD PARTY IN CONNEC-
TION WITH THE PURCHASE, INSTALLATION, REPAIR OR OPERATION OF EQUIPMENT, OR ANY
PART THEREOF COVERED BY THIS WARRANTY OR OTHERWISE. WE MAKE NO WARRANTY,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF FITNESS OR
OF MERCHANTABILITY, AS TO ANY OTHER MANUFACTURER’S EQUIPMENT, WHETHER SOLD
SEPARATELY OR IN CONJUNCTION WITH EQUIPMENT OF OUR MANUFACTURE. WE DO NOT
AUTHORIZE ANY REPRESENTATIVE OR OTHER PERSON TO ASSUME FOR US ANY LIABILITY IN
CONNECTION WITH EQUIPMENT, OR ANY PART THEREOF, COVERED BY THIS WARRANTY.

xii | Dycor CG1000-RTP Oxygen Analyzer
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Overview|1-1
CG1000-RTP OXYGEN ANALYZER
Follow these safety precautions when working on the sensor:
Disconnect AC power from the analyzer before performing any main-
tenance or troubleshooting.
The furnace and furnace insulation cover are hot during normal oper-
ation (up to 500°F/260°C inside the furnace insulation cover). Allow
analyzer components to cool for at least an hour before working inside
the analyzer. Use caution and wear appropriate gloves when handling
components or when touching analyzer components near the furnace!
Basic Elements of the Sensor
The CG1000 analyzer consists of the following basic systems:
• The Plumbing: All inlet and outlet tubing (cell housing). Also includes
the calibration gas inlet and aspirator assembly, with the aspirator
used to pull the sample into the sensor.
• The Measuring System: Zirconium oxide cell.
• The Temperature System: The electrical cell heater (furnace), sensor
case heaters, the type “K” thermocouple (maintains cell operating
temperature), and the sensor board containing cold junction compen-
sation. The sensing cell operates at a constant temperature. The circuit
board in the sensor terminal box switches power to the furnace from
the AC mains connected to the sensor. This board also provides cold
junction compensation to the thermocouple circuit.

1-2 | Dycor CG1000-RTP Oxygen Analyzer
The Oxygen Measuring Cell
The sensing element itself is a closed-end tube or disk made from ceramic
zirconium oxide stabilized with an oxide of yttrium or calcium. Porous
platinum coatings on the inside and outside serve as a catalyst and as
electrodes. At high temperatures (generally above 1200°F/650°C), oxygen
molecules coming in contact with the platinum electrodes near the sensor
become ionic. As long as the oxygen partial pressures on either side of the
cell are equal, the movement is random and no net flow of ions occurs.
If, however, gases having different oxygen partial pressures are on either
side of the cell, a potentiometric voltage is produced (See Figure 1-1).
The magnitude of this voltage is a function of the ratio of the two oxygen
partial pressures. If the oxygen partial pressure of one gas is known, the
voltage produced by the cell indicates the oxygen content of the other gas.
A reference gas, usually air (20.9% O2), is used for one of the gases.
Since the voltage of the cell is temperature dependent, the cell is main-
tained at a constant temperature. Some newer high temperature insitu
models use the heat from the process to heat the sensor, and the process
temperature is continuously measured and used in the software calcula-
tion. The oxygen content is then determined from the Nernst equation:
E = In
RT
4F
O1
O2
where R and F are constants, T is absolute temperature, and O1and O2are
the oxygen partial pressures on either side of the cell.

Overview|1-3
Figure 1-1.
Zirconium oxide cell principle of operation.
For measuring oxygen in non-combustibles gases, the calibration of an
analyzer is obtained from the formula:
AT = 48.0 at 695°C
E = A*T*Log 20.9%
O2Unk% AT = 54.4 at 824°C
Where Ais a constant, Tis the cell temperature on an absolute scale (°C +
273) and O2 Unk% is the unknown oxygen concentration of the gas to be
analyzed, and which is calculated by the analyzer.
Because of the high operating temperature of the cell, combustible
gases that are present may burn. When this occurs, the cell will gener-
ate a higher than expected millivolts and cause the display to indicate
less oxygen than is actually in the gas.
Hydrocarbons
When hydrocarbons are present in the gas sample, a combustion process
occurs when this gas sample is exposed to the high temperature of the
zirconia cell. An indication that hydrocarbons may be present in the gas
sample is that the oxygen reading will be lower than expected. For ex-
ample, if a calibration gas cylinder has an oxygen value of 20 ppm and 5
ppm of hydrogen (balance nitrogen), the oxygen analyzer will read 17.5
ppm of oxygen. The reduction of oxygen is due to the combustion process
where 5 ppm of hydrogen will combine with 2.5 ppm of oxygen to form
water. Thus, the oxygen analyzer will read 17.5 ppm rather than the actual
20 ppm oxygen. Note that the amount of oxygen reduction is dependent
on the type of hydrocarbons present in the sample gas.
NOTE


1-4 | Dycor CG1000-RTP Oxygen Analyzer
Proper Sensor Operations
Ensure your analyzer operates with minimum maintenance and trouble-
shooting by avoiding these common errors:
• Do not use pipe dope or any other contaminant that gives off combus-
tible vapor. This can cause erroneous measurements on joints of the
sample tubing.
• Do not use calibration gases if they contain a mixture of oxygen and
combustibles.
• Always introduce calibration gases at the recommended flow rate.
• When working on the plumbing inside the sensor cabinet, turn the
power off. The heater has exposed windings and a short to the plumb-
ing will blow the fuse and could damage the furnace or thermocouple.
• Do not handle the cell excessively. Do not try to clean the cell except
by rinsing.
• Do not remove a cell or type “K” thermocouple that you may want to
use again when the inside of the furnace is still hot. Severe thermal
shock can be destructive to both of them.
• Always replace the Viton O-ring when replacing the oxygen cell.
• Allow at least one hour after closing the sensor door for readings to
stabilize. Allow more time after a cold start-up.
• If calibrating in the PPM range, calibration gas should be in cylinders
made of aluminum, not carbon steel.

Overview|1-5
Technical Support
AMETEK/Thermox is committed to providing the best technical support
in the industry. If you need service or application assistance, please call
AMETEK at [phone], or your local AMETEK/Thermox representative.
Before you call the factory for technical support, run test gases and record
the following values (you may be asked by the factory to provide this
information when receiving service):
• Cellmillivolts
• Thermocouplemillivolts
• Celltemperature
See the “Display” section in Chapter 4 for help on how to display this
information on the Series 2000 control unit.
If you need to return equipment, you will be asked to provide the follow-
ing information before obtaining a Return Material Authorization (RMA)
number.
• Billingandshippingaddress
• Modelnumber
• Serialnumber
• PurchaseOrdernumber
• Telephonenumber
Before returning material, you must get an RMA number from the
factory.
NOTE


1-6 | Dycor CG1000-RTP Oxygen Analyzer
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Specications | 2-1


 0.1 PPM O2 to 100% O2
 Percent: ±2% of reading or .05% O2 absolute, whichever is greater.
PPM: ± 2% of reading or .5 PPM O2 absolute, whichever is greater.
 < 5 seconds at 150 sccm over one decade.
 Percent: ± .5% of reading or .1% O2 absolute, whichever is greater.
PPM: ± .5% of reading or .1 PPM O2 absolute, whichever is greater.
 3 x 10-8 atmosphere cc/sec


5° C to 40 °C (41 °F to 104 °F)
 10 - 80%, non-condensing


160 °F (70 °C)
 125 to 200 sccm (150 sccm is recommended).

IEC Installation Category II
IEC Pollution Degree 2
Altitude: 2000 meters


115 VAC, 60 Hz, 150 VA
230 VAC, 50 Hz, 150 VA
 Limit: 3 PSIG


Use calibration gases @ 150 sccm (limit is 125 to 200 sccm)
Zero Gas: From 0.1 PPM to 10% O2, balance N2
Span Gas: Minimum one decade above zero gas (10 times greater
recommended)

4 line x 20 character vacuum uorescent. Displays combination of
oxygen (0.1 ppm O2 to 100%, autoranging), time and date, cell tem-
perature, user-programmable text, thermocouple mV, cell mV, ow,
and pressure. Password protection and context-sensitive help are
also provided.

Two isolated linear current outputs. Select O2, cell temperature, ther-
mocouple mV or cell mV. each output can be 4-20 mA, 0-20 mA, 20-4
mA or 20-0 mA, and is fully scalable. Hold or track during calibration
and select degree of damping. Maximum load is 1200 Ohms.

2-2 | Dycor CG1000-RTP Oxygen Analyzer

Two (2) independent alarms, each high- or low-selectable. Alarms can
be assigned as oxygen, ow, calibrate, or verify. Set relays to ener-
gize or de-energize on alarm.
 0.5A, 30V, 10VA max. noninductive load, AC or DC

Watchdog timer and service alarms. System test for A/D, RAM,
EEPROM and keypad. Display line 4 reserved for full-text error and
diagnostic messages. Twenty-entry exception log for automatically
detected system events.
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