INSTRUCTION MANUAL MODEL 460L Nema Ozone Monitor 9480 CARROLL PARK DRIVE SAN DIEGO, CA 92121-5201 USA Toll-free Phone: Phone: Fax: Email: Website: © 2008 T-API PRINT DATE: 19 February 2009 800-324-5190 858-657-9800 858-657-9816 api-sales@teledyne.com http://www.teledyne-api.com/ 05012 REV.
TELEDYNE INSTRUMENTS HIGHLIGHTS Model 460L – NEMA Ozone Monitor Instruction Manual THIS PAGE IS INTENTIONALLY LEFT BLANK H-ii 22 January 2009 PRINTED DOCUMENTS ARE UNCONTROLLED 05012 Rev D DCN 5164
TELEDYNE INSTRUMENTS 460L Instruction Manual Safety Messages SAFETY MESSAGES Your safety and the safety of others is very important. We have provided many important safety messages in 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 may be found in the manual and inside the monitor.
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TELEDYNE INSTRUMENTS 460L Instruction Manual Table of Contents TABLE OF CONTENTS 1. INTRODUCTION ........................................................................................................................... 1 1.1. Preface ..................................................................................................................................1 1.2. 460L Documentation................................................................................................................1 1.3.
TELEDYNE INSTRUMENTS Table of Contents 460L Instruction Manual 9.1.1. Filter Replacement Procedure............................................................................................ 45 9.1.2. Mounting the Particulate Filter Externally ............................................................................ 46 9.2. Maintaining the Optional H2O Coalescing Filter ........................................................................... 47 9.2.1. Draining the Optional Coalescing Filter .......
460L Instruction Manual TELEDYNE INSTRUMENTS Table of Contents List of Figures Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 8-1 8-2 9-1 9-2 9-3 9-4 9-5 10-1 10-2 10-3 10-4 10-5 10-6 12-1 12-2 M460L Front Cover Layout ............................................................................. 7 460L Layout ...
TELEDYNE INSTRUMENTS Table of Contents 460L Instruction Manual LIST OF APPENDICES Appendix A – Spare Parts List Appendix B – List of Schematics vi PRINTED DOCUMENTS ARE UNCONTROLLED 05228 Rev B DCN 5164
TELEDYNE INSTRUMENTS 460L Instruction Manual Introduction 1. INTRODUCTION 1.1. Preface Teledyne Instruments is pleased that you have purchased the Model 460L NEMA Ozone Monitor. Included is a full one-year warranty (see Section 2.2) and we at Teledyne Instruments will be pleased to provide you with any support required so that you may utilize our equipment to the fullest extent.
TELEDYNE INSTRUMENTS Introduction 460L Instruction Manual 1.3. Using This Manual This manual has the following data structures: 1.0 Table of Contents: Outlines the contents of the manual in the order the information is presented. This is a good overview of the topics covered in the manual. There is also a list of tables, a list of figures and a list of appendices. In the electronic version of the manual, clicking on any of these table entries automatically views that section. 2.
TELEDYNE INSTRUMENTS 460L Instruction Manual Introduction interact with each other. A close reading of this section is invaluable for understanding the monitor’s operation. 11.0 Troubleshooting Section: This section includes pointers and instructions for diagnosing problems with the monitor, such as excessive noise or drift, as well as instructions on performing repairs of the monitor’s major subsystems. 12.
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TELEDYNE INSTRUMENTS 460L Instruction Manual Specifications and Warranty 2. SPECIFICATIONS AND WARRANTY 2.1. Specifications Table 2-1 460L Specifications Measurement Principle UV Absorption (Beer Lambert Law) Ranges 1ppm to 500 ppm: User selectable Measurement Units ppm; ppb Accuracy 1% of Full Scale Zero Noise < 0.0015 ppm (rms) Span Noise < 0.5% of reading (rms) (above 0.1 ppm) Lower Detectable Limit < 0.
TELEDYNE INSTRUMENTS Specifications and Warranty 460L Instruction Manual 2.2. Warranty WARRANTY POLICY (02024D) Prior to shipment, T-API equipment is thoroughly inspected and tested. Should equipment failure occur, T-API assures its customers that prompt service and support will be available. COVERAGE After the warranty period and throughout the equipment lifetime, T-API stands ready to provide on-site or in-plant service at reasonable rates similar to those of other manufacturers in the industry.
TELEDYNE INSTRUMENTS 460L Instruction Manual Getting Started 3. GETTING STARTED 3.1. Unpacking 1. Inspect the received packages for external shipping damage. If damaged, please advise the shipper first, then Teledyne Instruments. 2. Loosen the 2 setscrews located in the top and bottom left corners of the front and swing open the cover.
TELEDYNE INSTRUMENTS Getting Started 460L Instruction Manual CAUTION Never disconnect electronic circuit boards, wiring harnesses or electronic subassemblies while the unit is under power. 4. Check the connectors of the various internal wiring harnesses and pneumatic hoses to make sure they are firmly and properly seated (see Figure 3-2). 5. Verify that all of the optional hardware ordered with the unit has been installed. These are listed on the paperwork accompanying the monitor.
TELEDYNE INSTRUMENTS 460L Instruction Manual Getting Started UV Lamp UV Lamp Housing UV Lamp Power Connector Ozone Outlet Manifold UV Lamp Power Supply Reference Scrubber Absorption Tube Sensor Module PCA Ozone Intlet Manifold UV Detector Figure 3-3 Measure / Reference Valve 460L Sensor Module Layout 3.2. Mechanical Installation Mount the enclosure securely to a vertical surface. Figure 3-4 below shows the locations of the four mounting holes.
TELEDYNE INSTRUMENTS Getting Started Table 3-1 460L Instruction Manual 460L Ventilation Clearances AREA MINIMUM REQUIRED CLEARANCE Sides of the monitor 1 inch Above and below the monitor. 1 inch Figure 3-4 460L Mounting Hole Locations and Dimensions 3.3. Pneumatic Connections 1. Connect a ¼” exhaust line to the fitting labeled ‘Exhaust.
TELEDYNE INSTRUMENTS 460L Instruction Manual Getting Started NOTE The ozone delivery pressure should be at ambient pressure +/- 5 PSIG. All tubing used should be made of ozone resistant material such as Stainless Steel, PTFE (Teflon) or FEP. API can supply appropriate tubing for connecting the ozone supply line.
TELEDYNE INSTRUMENTS Getting Started 460L Instruction Manual 3.4. Electrical Connections NOTE It is recommended that if multi-strand wires are used for the following electrical connections. To ensure a reliable connection the wires should be: “Tinned” with solder or; Terminated with insulated crimped ferrules, such as Entrelec® P/N 304.456.02 (18 gauge) or 304.558.10 (22 gauge) 3.4.1.
TELEDYNE INSTRUMENTS 460L Instruction Manual Getting Started 3.5. Signal I/O Connections All digital and analog signal I/O connections are made via a 16-pin connector on the main board (See Figure 3-6 for the location of the connector.) This connector can be unplugged from the header on the main board for easier access when wiring. To disconnect from main board, loosen the two retaining screws at either end of the connector.
TELEDYNE INSTRUMENTS Getting Started 460L Instruction Manual 3.5.2. Digital Status Outputs The 460L has six assigned digital status outputs for indicating error and operational status conditions of the monitor as well as the status of its O3 concentration alarms (see Table 3-2). These outputs are in the form of opto-isolated open-collector transistors. They can be used to drive status LED’s on a display panel or interface to a digital device such as a Programmable Logic Controller (PLC).
TELEDYNE INSTRUMENTS 460L Instruction Manual Getting Started 3.5.3. Control Inputs Two digital control inputs are also available for use on the 460L. The control inputs are used for remote control of the 460L by a device such as a PLC. They are labeled ZERO INPUT and AUX INPUT (see Figure 3-9). Table 3-3 Control Inputs INPUT ZERO INPUT AUX INPUT DESCRIPTION This input performs exactly the same function as the ‘Zero’ buttons on the front panel.
TELEDYNE INSTRUMENTS Getting Started 460L Instruction Manual Below each relay is a 3-pin connector that allows the relay to be connected for either normally open or normally closed operation. Table 3-4 describes how to connect the alarm relays. NOTE The relay contacts are rated to 3A at 240VAC. Do not exceed these ratings when connecting equipment to the instrument. D6 D7 N.C. N.O. RELAY 3 COM N.C. N.O. RELAY 2 COM N.C. N.O.
TELEDYNE INSTRUMENTS 460L Instruction Manual 1 2 Getting Started Located just below each relay connector (see Figure 3-10) N.O. = Normally Open operation. N.C. = Normally Closed operation. 3.6. Initial Startup Perform the following steps when initially starting up the 460L or when bringing the monitor back into service it has been shut down for repair or maintenance. 1. Turn on power to the monitor. The display will briefly display the “API” logo followed by the software version.
TELEDYNE INSTRUMENTS Getting Started 460L Instruction Manual While the standard factory configuration is for RS-232, the monitor’s serial port can be configured for either RS-232 or RS-485 (see Section 3.7.1 for the procedure). Use RS-232 for direct connection to a nearby (no more than 6-8 feet cable length) PC or Laptop, RS-232 should be used. Use RS-485 for permanent connection to continuously operating data acquisition systems or connections over greater distances. 3.7.1.
TELEDYNE INSTRUMENTS 460L Instruction Manual Getting Started 7. Connect the appropriate type of cable to the 16 pin Signal I/O connector inside the analyzer. 8. A cable may be included with you instrument. If not, Figure 3-12 below illustrates how to construct wiring for both RS-232 and RS-485 connections. RS-232 DB9 Female 1 6 Serial TXD 2 Serial RXD 3 7 8 4 9 Serial GND 5 RS-485 Serial TXD Twisted Pair Serial RXD RS-485-A RS-485-B Figure 3-12 Typical RS-232 and RS-485 Connections 3.7.2.
TELEDYNE INSTRUMENTS Getting Started 460L Instruction Manual The Serial Port of the device being used to communicate with the 460L should be configured as follows: Table 3-6 Serial Port Configuration PARAMETER Baud Rate Data Bits Stop Bits Parity VALUE 9600 bps 8 1 None 3. Find the address of the 460L. This can be accomplished by repeating the O3 command (see Section 7.3.
TELEDYNE INSTRUMENTS 460L Instruction Manual Frequently Asked Questions 4. FREQUENTLY ASKED QUESTIONS Q: What do I do if I smell Ozone and suspect a leak? A: Ensure that all the fittings are tight. If the fittings are tight and ozone is still detected send the monitor back for repair to Teledyne Instruments’ customer service for repair. Q: What do I do if my CPU status light stops flashing? A: The CPU has stopped working. This is a major malfunction of the monitor.
TELEDYNE INSTRUMENTS Frequently Asked Questions 460L Instruction Manual USER NOTES: 22 PRINTED DOCUMENTS ARE UNCONTROLLED 05228 Rev B DCN 5164
TELEDYNE INSTRUMENTS 460L Instruction Manual Optional Hardware and Software 5. OPTIONAL HARDWARE AND SOFTWARE This section includes descriptions of the hardware and software options available for the 460L monitor. For assistance with ordering these options please contact the sales department of Teledyne Instruments at: TOLL-FREE: TEL: FAX: E-MAIL: WEB SITE: 800-324-5190 +1 858-657-9800 +1 858-657-9816 apisales@teledyne.com http://www.teledyne-api.com/ 5.1.
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TELEDYNE INSTRUMENTS 460L Instruction Manual Operating Instructions 6. OPERATING INSTRUCTIONS The 460L has been designed for simple and trouble-free operation. The sections below detail the operational features of the 460L. 6.1. Front Panel Display 6.1.1. O3 readout The current ozone concentration is displayed in the 4-digit readout in the center of the display. The concentration is displayed in the currently selected units either: wt%, g/Nm3 or ppm, ppb. 6.1.2.
TELEDYNE INSTRUMENTS Operating Instructions 460L Instruction Manual 6.2. Concentration Alarms There are two O3 concentration alarms, HI and HI-HI. Both alarms are triggered when the measured O3 concentration equals or rises above the set limit for that alarm. The set limit for HI alarm must always be a lower value than that of the HI-HI alarm. If the O3 concentration is between the HI limit and the HI-HI limit, the HI alarm will be active, but the HI-HI alarm will be inactive.
TELEDYNE INSTRUMENTS 460L Instruction Manual Serial Communications 7. SERIAL COMMUNICATIONS The 460L comes equipped with a powerful digital Serial Communications Port that can be used for Data Acquisition and for changing the monitor’s configuration. This port can be configured for either RS-232 or RS-485 (half-duplex) operation. See Section 3.7.1 for details on configuring the port and connecting it to a computer or data acquisition system. 7.1.
TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual 7.2. Serial Port Command Summary Table 7-1 below lists the commands available and a summary of their function. Table 7-1 Serial Port Command Summary COMMAND DESCRIPTION ALMACK Acknowledges and clears any active concentration alarms ALMSTAT Returns the current state of the concentration alarms CZERO Perform a manual zero calibration.
TELEDYNE INSTRUMENTS 460L Instruction Manual Serial Communications 7.3. Serial Port Command Reference 7.3.1. ALMACK SYNTAX
ALMACK DESCRIPTION Acknowledges any active concentration alarm and clears them if possible For more information see Section 6.2. DATA PARAMETERS SENT None RESPONSE :# EXAMPLE Command: 1ALMACK Response: 1:OK#261 - Command successfully received. All alarms capable of being cleared have been.TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual 7.3.2. ALMSTAT SYNTAX
ALSTAT DESCRIPTION Returns the current status of both of the concentration alarms.TELEDYNE INSTRUMENTS 460L Instruction Manual Serial Communications 7.3.3. CZERO SYNTAX
CZERO DESCRIPTION Performs a zero calibration using gas sourced from the ozone gas inlet.TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual 7.3.4. DACSTEP SYNTAX
DACSTEP DESCRIPTION Puts the monitor into Analog Output setup mode. The Analog Output steps from zero to full-scale in 25% increments, pausing for 10 seconds at each level. This repeats 5 times, after which the monitor returns to normal operation. This mode is useful for testing the Analog Output and the operation of any equipment measuring the Analog Output.TELEDYNE INSTRUMENTS 460L Instruction Manual Serial Communications 7.3.5. O3 SYNTAX
O3 DESCRIPTION Returns the current ozone concentration measured by the monitor. DATA PARAMETERS SENT None RESPONSE :# EXAMPLE Command: 1O3 Response: 1:250.1898#522 - Current O3 Concentration (reading 250.2 ppb) NOTES While the concentration value returned shows more digits after the decimal than the front panel (in the example above, 250.TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual 7.3.6. SETADDR SYNTAX
SETADDR: DESCRIPTION Changes the communications address to a new value. DATA PARAMETERS SENT new_address is the new address for the monitor; Range for new_address is 1-9.460L Instruction Manual TELEDYNE INSTRUMENTS Serial Communications 7.3.7. TDUMP SYNTAX
TDUMP DESCRIPTION This command is best used if the response is intended as input for a database program or data acquisition system It returns a string made up of the current values of the following parameters in the following order: O3 Concentration, Cell Pressure (psia), Cell Temperature (K,) Lamp Temperature (K,) Measure Detector (mV,) Calibrated Reference Detector (mV,) Reference Detector (mV).TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual 7.3.8. TLIST SYNTAX
TLIST DESCRIPTION Returns a formatted, easy to read list of the parameters by name with the current values for each. DATA PARAMETERS SENT None RESPONSE Test Parameter List (See Below) EXAMPLE Command: 1TLIST Response: O3 = 0.0226168 Press = 14.7753 Cell Temp = 300.7116 Lamp Temp = 324.7965 Ref = 2881.52 Meas = 2941.092 Raw Ref = 4412.TELEDYNE INSTRUMENTS 460L Instruction Manual Serial Communications 7.3.9. VGET SYNTAX
VGET: DESCRIPTION Returns value of an internal configuration variable (VAR.TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual 7.3.10. VLIST SYNTAX
VLIST DESCRIPTION Returns a formatted, easy to read list of an internal configuration variables (VAR’s) and their current values. DATA PARAMETERS SENT None RESPONSE VAR List (See Below) EXAMPLE Command: 1VLIST Response: #0 analog_range = 1000.0 #1 alarm_enable = 1.0 #2 alarm_mode = 0.0 #3 carrier_weight =32.0 #4 comm_mode = 0.0 #5 iir_filt = 0.25 #6 conc_units = 2.0 #7 hi_al_level = 100.TELEDYNE INSTRUMENTS 460L Instruction Manual Serial Communications 7.3.11. VSET SYNTAX
VSET:, DESCRIPTION Sets value of an internal configuration variable (VAR.) DATA PARAMETERS SENT var_index index number for internal VAR (See VGET for index list) new_value new value for VAR.TELEDYNE INSTRUMENTS Serial Communications 460L Instruction Manual EXAMPLE2 Command: 1VSET:6,1 - Set CONC_UNITS VAR to ppm Response: 1:OK#261 - VSET Successful 1:FAIL#391 - VSET Failed NOTES ANALOG_RANGE: Setting is in whatever units selected by the CONC_UNITS VAR ALARM_ENABLE: The concentration alarms cannot be enable/disabled independently. ALARM_MODE: The mode of the concentration alarms cannot be set independently.
TELEDYNE INSTRUMENTS 460L Instruction Manual Calibration 8. CALIBRATION 8.1. Zero Point calibration Variations in ambient conditions, most notably changes in ambient humidity, and minor changes in the performance of certain electronic components over time may cause slight offsets in the zero point measurement of the monitor. To check for and compensate for these minor offsets use the following procedure. 1.
TELEDYNE INSTRUMENTS Calibration 460L Instruction Manual Where
is the network address of the M460M being calibrated. 929 is a special password allowing you to calibrate the analyzer. 5. List the current values of the M460M’s VARS. Type: VLIST Look through the list for one with the a special VARS named either O3 SLOPE, or O3 SPAN SLOPE. This VAR is only available using the 929 password. Record both the slope value and the VAR Number it corresponds with. 6.TELEDYNE INSTRUMENTS 460L Instruction Manual Calibration 8. Enter the New Slope into the M460M’s memory enter it in. Type:
VSET:, EXAMPLE 3VSET:16,1.048 Where: The address of the M460M is 3 The O3 SLOPE VAR is number 16 The New Slope is = 1.013 8.3.TELEDYNE INSTRUMENTS Calibration 460L Instruction Manual 5. The monitor will automatically generate the nominal signal level by producing a 25% increment output level on the current loop. EXAMPLE OUTPUT LEVEL NOMINAL SIGNAL LEVEL 0% 4mA 25% 8mA 50% 12mA 75% 16mA 100% 20mA Figure 8-2 Zero Pot. Span Pot. 6. The display will then show “A100” (four times). Adjust the “Span” potentiometer (See Figure 8.2) as necessary. Location Current Output Adjustment Potentiometers 7.
TELEDYNE INSTRUMENTS 460L Instruction Manual Maintenance 9. MAINTENANCE: 9.1. Replacing the Particulate Filter Element The 460L is equipped with a particulate filter on the ozone inlet. Only Teledyne Instruments filter elements should be used. When the monitor is first installed, the sample filters should be checked at least once a week for particulate loading and replaced if necessary. Once the replacement frequency is determined, a regular schedule for filter replacement should be instituted.
TELEDYNE INSTRUMENTS Maintenance 460L Instruction Manual 9.1.2. Mounting the Particulate Filter Externally In applications where the 460L is sampling ambient air at its own location and no inlet gas line is being used, the particulate filter can be mounted on the outside of the instrument so that it may be replaced without turning off the monitor or opening the case. To mount the particulate filter outside the monitor enclosure: 1.
TELEDYNE INSTRUMENTS 460L Instruction Manual Maintenance 9.2. Maintaining the Optional H2O Coalescing Filter 9.2.1. Draining the Optional Coalescing Filter The coalescing filter component of the optional sample conditioning system may accumulate with water (see Figure 9-3 for filter location). It must be checked periodically and drained. It is recommended that the filter be checked every 2 hours for the first several days of the monitor’s operation to determine the fill rate of the filter’s reservoir.
TELEDYNE INSTRUMENTS Maintenance 460L Instruction Manual 9.2.2. Replacing the Coalescing Membrane The coalescing filter contains a replaceable Teflon® coalescing membrane. Under normal operating conditions, this membrane should last for a long time, however a significant reduction in the gas pressure measured in the O3 cell might indicate that this membrane needs replacement. To replace the filter membrane: 1.
TELEDYNE INSTRUMENTS 460L Instruction Manual Maintenance 9.3. UV Lamp Replacement 1. Disconnect power from the monitor and open cover. 2. Loosen, but do not remove, the two lamp set-screws (see Figure 9-5 below). 3. Unplug lamp from the UV lamp power connector on Sensor Module PCA. 4. Remove lamp from lamp housing. Dispose of lamp in accordance with local regulations regarding disposal of Mercury containing waste. 5. Install new lamp in housing and plug into the UV lamp power connector. 6.
TELEDYNE INSTRUMENTS Maintenance 460L Instruction Manual 9.4. Cleaning Exterior Surfaces of the 460L If necessary, the exterior surfaces of the 460L can be cleaned with a damp cloth. Do not attempt to clean any of the other surfaces of the monitor. Do not submerge any part of the monitor in water or cleaning solution. 9.5. Degree of Protection The Model 460L has a water ingress rating of IP65 which indicates that it can withstand strong jets of water and is totally protected against dust.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation 10. THEORY OF OPERATION 10.1. Basic O3 Measurement Principle 10.1.1. (Beer’s Law) The detection of ozone molecules in a gas is based on the principle that ozone is a very strong absorber of UV light with a wavelength of 254 nm. If the distance that this light travels through the gas is always the same, the more ozone present in a gas, the more UV light is absorbed.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual To solve this equation for C, the concentration of the absorbing gas (in this case O3), the application of a little algebra is required to rearrange the equation as follows: Io 1 C ln I L Equation 10-2 Unfortunately, both ambient temperature and pressure influence the density of the sample gas and therefore the number of ozone molecules present in the absorption path thus changing the amount of light absorbed.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation beam is only required to make pass through the Absorption Tube. Therefore no complex mirror system is needed to lengthen the effective path by bouncing the beam back and forth. Finally, the UV then passes through a similar window at the other end of the Absorption Tube and is detected by a specially designed vacuum diode that only detects radiation at or very near a wavelength of 254nm.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual The Measurement / Reference Cycle consists of: Table 10-1 CYCLE STATUS DURATION -- MEASURE PERIOD ACTIVITY Wait Period. Ensures that the Absorption tube has been adequately flushed of any previously present gasses. 0.15 sec. Analyzer measures the average UV light intensity of O3 bearing Sample Gas (I) during this period. 13 Measure/Reference Valve Opens to the Reference Path. 0.50 sec. Wait Period.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation 10.2. Pneumatic Theory of Operation 10.2.1. Basic Pneumatic Flow And Flow Control Monitor Enclosure Flow Meter Valve PUMP Flow Meter Exhaust Out MEASURE REFERENCE VALVE Reference Cycle Gas Path O3 Scrubber Measure Cycle Gas Path 3 2 1 Gas Pressure Sensor ABSORPTION TUBE O3 IN Particulate Filter O3 Measurement Cell O3 DESTRUCT (Optional) Figure 10-3 460L Internal Pneumatic Diagram – Basic Configuration 10.2.2.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual 10.2.3. Optional Sample Conditioning The source air measured by the 460L needs to be as dry as possible. Significant amounts of liquid or vaporous water present in the source gas can foul the measurement cell optics. Also, water absorbs O3 and interferes with the 460L’s ability to accurately measure the O3 in the source gas. To counteract this problem, several optional components can be added to the 460L.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation To provide a dry purge gas for the outer side of the Nafion® tube, the 460L returns the dried O3 free air from the measurement cell and O3 destruct to the outer tube (see Figure 10-4). When the monitor is first started, the humidity gradient between the inner and outer tubes is not very large and the dryer’s efficiency is low at first but improves as this cycle reduces the moisture in the sample gas and settles at a minimum humidity. 10.2.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual 10.3.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation 10.3.2. O3 Sensor Module The heart of the 460 Monitor is the O3 sensor module. This electromechanical assembly located at the left hand side of the enclosure includes all of the pneumatic, mechanical and electronic components needed to gather the data required to calculate the O3 content of the source gas. 10.3.2.1. O3 Sensor Components UV Lamp: The ultraviolet light needed to detect O3 is supplied by a mercury-vapor UV lamp.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual Gas Pressure Sensor: This absolute pressure sensor measures the gas pressure in the measurement cell upstream of the Pump. The sample pressure is used by the CPU to calculate O3 Concentration (see Formula 10-3 in Section 10.1). This sensor outputs an analog signal to the sensor microprocessor.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation 10.3.3. CPU Board In addition to being responsible for all I/O functions and managing the state of the monitors various status indicators and alarms (see below), the 460L’s CPU also calculates the monitor’s offset during zero point calibration (see Section 8.1) and converts O3 concentration data from ppb units into ppm units if necessary. 10.3.3.1.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual and available at the STATUS COM pin of J2 on the main board (see Figure 3-7). This pin is normally connected to the input ground of the external device. NOTE Most PLC’s have internal provisions for limiting the current that the input will draw from an external device. When connecting to a unit that does not have this feature, an external dropping resistor must be used to limit the current through the transistor output to less than 50 mA.
TELEDYNE INSTRUMENTS 460L Instruction Manual Theory of Operation 10.3.5. Power Distribution The 460L operates on 90 to 260 VAC power at either 50Hz or 60Hz. As illustrated in Figure 10-6 below, power enters the monitor via a standard 3-conductor power cord through a hole provided in the bottom of the casing. In order to maintain the IP (NEMA4X) rating of the enclosure, an appropriate sealed conduit connector should be used.
TELEDYNE INSTRUMENTS Theory of Operation 460L Instruction Manual UV LAMP POWER SUPPLY: Using +12 VDC supplied by the main power supply, this assembly generates the 30 kHz AC voltage for the monitor’s mercury vapor UV lamp. The output of this power supply is variable. At startup voltage level of this output can reach as high a 1000 VAC. Once the lamp is warmed up and operating at peak efficiency, the output should be around 200 VAC. The 460L has no onboard ON/OFF switch.
TELEDYNE INSTRUMENTS 460L Instruction Manual Troubleshooting 11. TROUBLESHOOTING This chapter gives guidelines for diagnosing system and sensor malfunctions using the five digital Status Outputs provided by the 460L. All troubleshooting should be done after the 460L has been turned on and allowed to warm up for at least 15 minutes. 11.1. Status Output Summary Table 11-1 below gives a summary of the operation of the Status Outputs on the 460L. See Section 3.5.
TELEDYNE INSTRUMENTS Troubleshooting 460L Instruction Manual The O3 sensor is not responding to CPU requests for data. This could represent a variety of electronic problems with the sensor module or internal communication between the CPU and the sensor module. 11.2.2. Invalid Reading The normal state for the Invalid Reading output is OFF. When this output turns ON, the 460L is still operational, but a system fault or calibration fault exists that may make the current ozone reading invalid.
TELEDYNE INSTRUMENTS 460L Instruction Manual Table 11-2 Troubleshooting Status LED / Output Trouble shooting Truth Table SENSOR OK INVALID READING LAMP LOW 1 0 0 0 0 0 1 X 1 UV Lamp output is starting to drift low. Adjust the lamp output. 0 X 1 The UV lamp is either completely off or its intensity has drifted so low that the monitor can not reliable measure O3. Replace the UV lamp (see Section 9.3). ACTIONS Normal operation, no action required.
TELEDYNE INSTRUMENTS Troubleshooting 460L Instruction Manual 11.4. Technical Assistance If this addendum and its trouble-shooting / repair sections do not solve your problems, technical assistance may be obtained from: Teledyne Instruments Advanced Pollution Instrumentation Division (TAPI) Customer Service 9480 Carroll Park Drive San Diego, California 92121-5201USA Toll-free Phone: 800-324-5190 Phone: 858-657-9800 Fax: 858-657-9816 Email: Website: API-CustomerService@Teledyne.com http://www.
TELEDYNE INSTRUMENTS 460L Instruction Manual A Primer on Electro-Static Discharge 12. A PRIMER ON ELECTRO-STATIC DISCHARGE Teledyne Instruments considers the prevention of damage caused by the discharge of static electricity to be extremely important part of making sure that your analyzer continues to provide reliable service for a long time.
TELEDYNE INSTRUMENTS A Primer on Electro-Static Discharge Table 12-1 460L Instruction Manual Static Generation Voltages for Typical Activities MEANS OF GENERATION 65-90% RH 10-25% RH 1,500V 35,000V Walking across vinyl tile 250V 12,000V Worker at bench 100V 6,000V Poly bag picked up from bench 1,200V 20,000V Moving around in a chair padded with urethane foam 1,500V 18,000V Walking across nylon carpet 12.2.
460L Instruction Manual TELEDYNE INSTRUMENTS A Primer on Electro-Static Discharge Any time a charged surface (including the human body) discharges to a device. Even simple contact of a finger to the leads of a sensitive device or assembly can allow enough discharge to cause damage. A similar discharge can occur from a charged conductive object, such as a metallic tool or fixture.
TELEDYNE INSTRUMENTS A Primer on Electro-Static Discharge 460L Instruction Manual other things, like you and your clothing, from discharging through the instrument and damaging it. 12.4. Basic Principles of Static Control It is impossible to stop the creation of instantaneous static electric charges. It is not, however difficult to prevent those charges from building to dangerous levels or prevent damage due to electro-static discharge from occurring. 12.4.1.
TELEDYNE INSTRUMENTS 460L Instruction Manual A Primer on Electro-Static Discharge While this layer may equalizes any charges that occur across the whole bag, it does not prevent the build-up of static charges. If laying on a conductive, grounded surface, these bags will allow charges to bleed away but the very charges that build up on the surface of the bag itself can be transferred through the bag by induction onto the circuits of your ESD sensitive device.
TELEDYNE INSTRUMENTS A Primer on Electro-Static Discharge 460L Instruction Manual This will allow any charges you are carrying to bleed away through the ground connection of the workstation and prevent discharges due to field effects and induction from occurring. 2. Pause for a second or two to allow any static charges to bleed away. 3. Only open any anti-ESD storage bins or bags containing sensitive devices or assemblies after you have plugged your wrist strap into the workstation.
TELEDYNE INSTRUMENTS 460L Instruction Manual A Primer on Electro-Static Discharge 5. Seal the container. If using a bag, fold the end over and fastening it with anti-ESD tape. Folding the open end over isolates the component(s) inside from the effects of static fields. Leaving the bag open or simply stapling it shut without folding it closed prevents the bag from forming a complete protective envelope around the device. 6.
TELEDYNE INSTRUMENTS A Primer on Electro-Static Discharge 460L Instruction Manual 12.4.2.5. Packing Components for Return to Teledyne Instruments Customer Service Always pack electronic components and assemblies to be sent to Teledyne Instruments Customer Service in anti-ESD bins, tubes or bags. CAUTION ESD Hazard DO NOT use pink-poly bags.
TELEDYNE INSTRUMENTS 460L Instruction Manual A Primer on Electro-Static Discharge 4. Seal the container. If using a bag, fold the end over and fastening it with anti-ESD tape. Folding the open end over isolates the component(s) inside from the effects of static fields. Leaving the bag open or simply stapling it shut without folding it closed prevents the bag from forming a complete protective envelope around the device.
TELEDYNE INSTRUMENTS 460L Instruction Manual Spare Parts List USER NOTES: 78 PRINTED DOCUMENTS ARE UNCONTROLLED 05228 Rev B DCN 5164
M460L Instruction Manual Appendix A - Spare Parts list Appendix A - Spare Parts list • 05128 – Spare Parts List M460L 05229 Rev B A-1
Appendix A - Spare Parts list A-2 M460L Instruction Manual 05229 Rev B
M460L Spare Parts List Part Number 025710100 030500400 031680100 034920000 036280000 036750000 037420000 037490100 040530000 040540100 041980000 046170000 046740000 047110000 048490100 049680000 049910100 050120000 050170000 050300000 053010000 CN0000350 DR0000006 HW0000120 OP0000031 OR0000039 OR0000050 OR0000098 OR0000099 PS0000035 05128C M460L- SPL.
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460L Instruction Manual Appendix B – Electronic Schematics Appendix B – Electronic Schematics Table B-1 M460L List of Electronic Schematics DOCUMENT # 05230 Rev A DESCRIPTION 03169 PCA, FRONT PANEL DISPLAY 04992 PCA, MAINBOARD 03493 PCA, CPU B-1
Appendix B – Electronic Schematics B-2 460L Instruction Manual 05230 Rev A
