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Use and Disclosure of Data
Information contained herein is classified as EAR99 under the
U.S. Export Administration Regulations.
Export, reexport or diversion contrary to U.S. law is prohibited.
OPERATING INSTRUCTIONS FOR
Model 3190
Trace Oxygen Analyzer
P/N M64641
10-31-11
DANGER
Toxic gases and or flammable liquids may be present in this monitoring system.
Personal protective equipment may be required when servicing this instrument.
Hazardous voltages exist on certain components internally which may persist
for a time even after the power is turned off and disconnected.
Only authorized personnel should conduct maintenance and/or servicing.
Before conducting any maintenance or servicing, consult with authorized
supervisor/manager.
Teledyne Analytical Instruments
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Summary of Contents for Teledyne 3190
- Page 1 Use and Disclosure of Data Information contained herein is classified as EAR99 under the U.S. Export Administration Regulations. Export, reexport or diversion contrary to U.S. law is prohibited. OPERATING INSTRUCTIONS FOR Model 3190 Trace Oxygen Analyzer P/N M64641 10-31-11 DANGER Toxic gases and or flammable liquids may be present in this monitoring system.
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- Page 3 Trace Oxygen Analyzer Teledyne Analytical Instruments...
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- Page 5 Teledyne Instruments/ Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91748.
- Page 6 Model 3190 Specific Model Information The instrument for which this manual was supplied may incorporate one or more options not supplied in the standard instrument. Commonly available options are listed below, with check boxes. Any that are incorporated in the instrument for which this manual is supplied are indicated by a check mark in the box.
- Page 7 NOTE: Additional information and comments regarding a specific component or procedure are highlighted in the form Symbol of a note. CAUTION: THE ANALYZER SHOULD ONLY BE USED FOR THE PURPOSE AND IN THE MANNER DESCRIBED IN THIS MANUAL. Teledyne Analytical Instruments...
- Page 8 Model 3190 IF YOU USE THE ANALYZER IN A MANNER OTHER THAN THAT FOR WHICH IT WAS INTENDED, UNPREDICTABLE BEHAVIOR COULD RESULT POSSIBLY ACCOMPANIED WITH HAZARDOUS CONSEQUENCES. This manual provides information designed to guide you through the installation, calibration operation and maintenance of your new analyzer.
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Page 9: Table Of Contents
3.1 Unpacking the Analyzer 3.2 Location and Mounting 3.2.1 Control Unit Installation 3.2.2 External Probe Installation 3.2.3 Installing the Micro-fuel Cell/Cell Block Orientation 3.3 Electrical Connections 3.4 Gas Connections Teledyne Analytical Instruments... - Page 10 Model 3190 3.5 Installation Checklist Operation ..................23 4.1 Introduction 4.2 Using the Function and Data Entry Buttons 4.3 Setting the Analysis Ranges 4.3.1 HI Range 4.3.2 LO Range 4.3.3 Settle Mode ...
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Page 11: List Of Figures
Figure 3-3: Contact ID for FAILSAFE Relay Operation ....21 Figure 4-1: Front Panel Controls and Indicators ......23 Figure 5-1: AC Fuse Replacement ..........29 Figure 5-2: Exploded View of MFC and Cell Block ......32 Teledyne Analytical Instruments... -
Page 12: List Of Tables
Model 3190 List of Tables Table 3-1: Required RS-232 Options ..........21 Teledyne Analytical Instruments... - Page 13 Since the use of this instrument is beyond the control of Teledyne Instruments/ Analytical Instruments, referred as TI/AI, no responsibility by TI/AI, its affiliates, and agents for damage or injury from misuse or neglect of this equipment is implied or assumed.
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Page 15: Introduction
Introduction Introduction 1.1 Overview The Teledyne Analytical Instruments (TAI) Model 3190 is a microprocessor-based trace oxygen analyzer for real-time measurement of trace amounts of oxygen in inert gases, or in a wide variety of gas mixtures. It features simple operation, fast response, and a compact, rugged construction. -
Page 16: Front Panel Description
Introduction Model 3190 • Two concentration alarms with adjustable setpoints. • Sensor failure alarm. • RS-232 serial digital port for output of concentration and range data to a computer, terminal, or other digital device. • Three analog outputs: two for measurement (0-10 V dc, and negative ground 4-20 mA dc) and one for range identification (0-10 V dc). -
Page 17: Rear Panel Description
The rear panel contains the electrical input and output connectors. Separate rear panel illustrations are shown in Figure 1-2 for the AC and DC powered versions of the instrument. The connectors are described briefly here and in detail in the Installation chapter of this manual. Teledyne Analytical Instruments... -
Page 18: Figure 1-2 Rear Panel (Ac And Dc Versions)
Introduction Model 3190 Figure 1-2 Rear Panel (AC and DC versions) • Power Connection AC version: 100–240 V ac, at 50/60 Hz. The connector housing includes the fuse holder and the power switch. DC version: Requires between 10 and 36 V dc. - Page 19 • Alarm Connections HI Alarm, LO Alarm, and Sensor Failure Alarm connections. • RS-232 Port Serial digital output of concentration and range signals. • External Probe Connects to the remote probe or remote analysis unit. Teledyne Analytical Instruments...
- Page 20 Introduction Model 3190 Teledyne Analytical Instruments...
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Page 21: Operational Theory
2.2 Micro-fuel Cell Sensor 2.2.1 Principles of Operation The oxygen sensor used in the Model 3190 is a micro-fuel cell designed and manufactured by TAI. It is a sealed, disposable electrochemical transducer. -
Page 22: Anatomy Of A Micro-Fuel Cell
Operational Theory Model 3190 There is, however, an important difference in the operation of a battery as compared to the micro-fuel cell: In the battery, all reactants are stored within the cell, whereas in the micro-fuel cell, one of the reactants (oxygen) comes from outside the device as a constituent of the sample gas being analyzed. -
Page 23: Electrochemical Reactions
The sample gas diffuses through the Teflon membrane. Any oxygen in the sample gas is reduced on the surface of the cathode by the following HALF REACTION: → 4OH + 2H O + 4e (cathode) – – Teledyne Analytical Instruments... -
Page 24: The Effect Of Pressure
The sensing technology deployed in the Model 3190 is an electrochemical oxygen sensor which is a partial pressure device. Any changes in the vent pressure of the unit will affect the pressure of the sample the sensor sees. -
Page 25: Calibration Characteristics
As the cell reaches the end of its useful life, the slope seen in Figure 2-3 decreases. In the Model 3190, the slope is monitored. If the inverse of the slope: Span Value (ppm) / Cell Output in nano amps (nA, 1x10... - Page 26 Operational Theory Model 3190 is over 4.447 ppm/nA, a sensor failure alarm is triggered, indicating that the cell should be replaced. Figure 2-3. Characteristic Input/Output Curve for a Typical Micro-fuel Cell Note: The graph depicted is used to show the linearity between output and oxygen concentration.
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Page 27: Electronics
Main PCB, which is mounted vertically, just behind the front panel of the control unit. 2.3.2 Signal Processing Figure 2-4 is a block diagram of the signal processing electronics described below. Figure 2-4: Block Diagram of the Signal Processing Electronics Teledyne Analytical Instruments... - Page 28 Operational Theory Model 3190 In the presence of oxygen the cell generates a current. A current to voltage amplifier (I–E AMPL) converts this current to a voltage. The second stage amplifier (TEMP COMP) supplies temperature compensation for the oxygen sensor output. The temperature compensation amplifier incorporates a thermistor (THERM) that is physically located in the cell block.
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Page 29: Installation
5. Testing the installation. CAUTION: Read this chapter in its entirety before installing the units. The Model 3190 is for indoor use only. The Sample must be free of entrained solids or water. However, a high humidity sample is ideal, since it will prevent water loss from the cell electrolyte. -
Page 30: Location And Mounting
3.2 Location and Mounting 3.2.1 Control Unit Installation The 3190 control unit is designed to be panel-mounted in a general purpose, indoor area, away from moisture and the elements. The unit should be installed at viewing level in a sheltered area. -
Page 31: Installing The Micro-Fuel Cell/Cell Block Orientation
The reason for proper Installation/Replacement is, if any bubble that develops as the electrolyte dries out will be directed by gravity away from the membrane. To install or replace the micro-fuel cell, follow the procedures in Chapter 5, Maintenance. Teledyne Analytical Instruments... -
Page 32: Electrical Connections
Installation Model 3190 3.3 Electrical Connections Figure 3-2 shows the two alternate Model 3190 rear panels. The first illustration shows the AC powered version, and the second illustration shows the DC powered version. The difference between them is the power connections. Both versions have identical connections for the external probe, the alarms, and for both digital and analog concentration outputs. -
Page 33: Figure 3-2 Rear Panel Electrical Connectors Ac And Dc Units
See Figure 3-3. The outputs are: 0–10 V Concentration: Voltage rises with increasing oxygen concentration, from 0 V at 0 percent oxygen to 10 V at full scale percent oxygen. (Full scale = 100% of programmed range.) Teledyne Analytical Instruments... - Page 34 Installation Model 3190 0–10 V Range ID: 03.33 V = Low Range, 06.66 V = High Range, 10 V = Air Cal Range. 4–20 mA % Range: Current increases with increasing oxygen concentration, from 4 mA at 0 percent oxygen to 20 mA at full scale percent oxygen.
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Page 35: Figure 3-3: Contact Id For Failsafe Relay Operation
Figure 3-3: Contact ID for FAILSAFE Relay Operation RS-232 Port: The digital signal output RS-232 port (not shown in Figure 3-2) is offered as a cost added option on the Model 3190. It is a standard RS-232 serial communications port used to connect the analyzer to a modem or other digital device. -
Page 36: Gas Connections
Gas connection instructions depend on the specific external probe used and any special requirements of the process being monitored. The standard Model 3190 External Probe has inlet and outlet fixtures only. Calibration gases must be tee’d into the sample inlet through appropriate valves. -
Page 37: Operation
Analyzing for the trace oxygen level in the gas passing through the cell block is the default mode of operation. As long as no front panel buttons are being pressed the analyzer is analyzing. Figure 4-1: Front Panel Controls and Indicators Teledyne Analytical Instruments... -
Page 38: Using The Function And Data Entry Buttons
Operation Model 3190 4.2 Using the Function and Data Entry Buttons When no buttons on the analyzer are being pressed, the instrument is in the Analyze mode. It is monitoring the percent of oxygen in the sample gas that is flowing through the remote probe. -
Page 39: Hi Range
4.3.3 Settle Mode The Model 3190 has two programmable ranges as discussed previous. Occasionally, to maximize accuracy the microprocessor must make certain adjustments to the gain of the amplifier which converts the sensor current into a voltage. -
Page 40: Hi Alarm
4.5 Selecting a Fixed Range or Auto-ranging The Model 3190 can operate in fixed high, fixed low, or auto ranging mode. To change modes: 1. Press and then release the SET HI RANGE and the SET LO RANGE buttons simultaneously. -
Page 41: Calibration
10,000 ppm (1%) oxygen. If the output of the sensor as measured by the 3190 is outside of the expected range because of: a. Bad electrical connection between the unit and the sensor, b. -
Page 42: Displaying Percent & Ppm On The Led Display
Flowing “zero” gas to the sensor is not needed for this instrument adjustment. It is only an electronic zero calibration. The sensor is automatically disconnected by the 3190 hardware during this mode. As soon as the countdown reaches 0.00, the analyzer will go back to the normal mode of operation and the sensor is reconnected. -
Page 43: Maintenance
Maintenance Maintenance Aside from normal cleaning and checking for leaks at the gas connections, the Model 3190 should not require any maintenance beyond replacement of expended micro-fuel cells, and perhaps a blown fuse. Routine maintenance includes occasional recalibration, as described in Chapter 4, Operation. -
Page 44: Dc Powered Units
There are several symptoms that may indicate sensor weakness other than the sensor failure alarm. • Cell failure in the 3190 is usually characterized very slow response to changes in oxygen levels below 100 ppm. This can cause errors in span calibration, since the sensor may not have time to settle properly. -
Page 45: Ordering And Handling Of Spare Sensors
If the cell package is punctured and air is permitted to enter, cell-life will be compromised. WARNING: THE SENSOR USED IN THE MODEL 3190 USES ELECTROLYTES WHICH CONTAIN SUBSTANCES THAT ARE EXTREMELY HARMFUL IF TOUCHED, SWALLOWED, OR INHALED. AVOID CONTACT WITH ANY FLUID OR POWDER IN OR AROUND THE UNIT. -
Page 46: Removing The Micro-Fuel Cell
Maintenance Model 3190 5.2.3 Removing the Micro-fuel Cell Refer to Figure 5-2 for an exploded view of the cell block and cell. To remove a spent or damaged micro-fuel cell: 1. Disconnect the Power Source at the Control Unit. 2. Disconnect the connector from the cell block if possible. -
Page 47: Installing A Micro-Fuel Cell
5.2.5 Cell Warranty Conditions The Class A-2C, B-2C or Z-2C micro-fuel cell is used in the Model 3190. These cells are warranted for 6 months, with an expected life of 8 months from the date of shipment (under specified operating conditions—see Appendix). - Page 48 Maintenance Model 3190 Teledyne Analytical Instruments...
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Page 49: Appendix
System Power Requirements: AC (100 to 240 V ac, 47/440 Hz), or DC (10-36 V dc); user specified. System Enclosure: Panel Mount: 2.81" H × 6.0" W × 2.87" D (71.4 mm × 152.4 mm × 72.9 mm). Face Plate: 3.75" H × 7.0" W (95.3 mm H Teledyne Analytical Instruments... -
Page 50: Spare Parts List
Appendix Model 3190 × 177.8 mm W). Faceplate rated to NEMA-4 Sensor Type: Class A-2C, B-2C, and Z-2C. Analysis Unit: 4.0" H × 6.0" W × 2.5" D (101.6 mm × 152.4 mm × 63.5 mm) A.2 Spare Parts List QTY. -
Page 51: Drawing List
C-65992 Analysis Unit Assembly A.4 Miscellaneous The symbol: ~ is used on the rear panel of the Model 3190 to signify volts alternating current (V ac). Note: The MSDS on this material is available upon request through the Teledyne Environmental, Health and Safety Coordinator. - Page 52 ...
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