LumaSense technologies 1313 Instruction Manual

BE6007-15
Manual
1313 Fermentation Monitor
BZ6009 – 1313 PC Software
Index ____________________________________________________________________________________________
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Index
Index ............................................................................................................................................................................................... 2
1313 Fermentation Monitor............................................................................................................................................................ 4
About this Manual .......................................................................................................................................................................... 6
Chapter 1 Introduction and Specifications .................................................................................................................................... 7
1.1 Broad Overview ......................................................................................................................................................... 8
1.2 Monitor System Description ....................................................................................................................................... 8
1.2.1 Control Software and PC Interface ..................................................................................................................... 8
1.2.2 Electro-mechanical and Electro-acoustic Measuring System ............................................................................. 9
1.2.3 Alarm Relay and Analogue Outputs ................................................................................................................... 9
1.2.4 Power Supply ................................................................................................................................................... 10
1.3 Software Description ................................................................................................................................................ 10
1.3.1 SF6 Version ...................................................................................................................................................... 10
1.4 Acoustic Gas Measurement ...................................................................................................................................... 11
Chapter 2 Installation and Getting Started .................................................................................................................................. 15
2.1 Installing the Monitor ............................................................................................................................................... 16
2.1.1 Operating Environment .................................................................................................................................... 16
2.1.2 Transportation Protection ................................................................................................................................. 16
2.1.3 Current-loop and Alarm Relay Outputs ............................................................................................................ 17
2.1.4 The Gas Sample Line ....................................................................................................................................... 19
2.1.5 Mains Supply .................................................................................................................................................... 20
2.1.6 Checking and Changing the Fuses .................................................................................................................... 20
2.2 The BZ 6009 Software ............................................................................................................................................. 21
2.2.1 Computer Requirements ................................................................................................................................... 22
2.2.2 Installing the Software on the PC ..................................................................................................................... 22
2.2.3 Activate automatic login and Auto start BZ6009 ............................................................................................. 25
2.3 Connecting the Monitor to the PC ............................................................................................................................ 26
2.4 Starting the Monitor ................................................................................................................................................. 27
2.5 Starting the Software ................................................................................................................................................ 28
2.5.1 To start the Software ........................................................................................................................................ 28
2.6 Using the S oftware ......................................................................................................................................................... 29
2.6.1 Screen Layout ................................................................................................................................................... 29
2.6.2 Moving around the Screen ................................................................................................................................ 29
2.6.3 Entering Values ................................................................................................................................................ 30
2.6.4 Information Screens .......................................................................................................................................... 30
2.7 Test 1313 & 1309 ..................................................................................................................................................... 31
2.8 Stopping the Software .............................................................................................................................................. 32
2.9 Selecting the Correct Serial Port .............................................................................................................................. 32
Chapter 3 Configuration .............................................................................................................................................................. 33
3.1 General Information ................................................................................................................................................. 34
3.2 Software Configuration ............................................................................................................................................ 34
3.2.1 BZ 6009 Set-up Screen ..................................................................................................................................... 34
3.2.2 General Set-up .................................................................................................................................................. 35
3.2.3 Gas Curves ....................................................................................................................................................... 37
3.2.4 1309 Sampling .................................................................................................................................................. 38
3.3 Hardware Configuration ........................................................................................................................................... 40
3.3.1 0 – 24 mA Se t-up .............................................................................................................................................. 40
3.3.2 Alarm Relays Set-up ......................................................................................................................................... 43
3.3.3 Adjust Clock ..................................................................................................................................................... 45
Chapter 4 Calibration .................................................................................................................................................................. 47
4.1 Introduction .............................................................................................................................................................. 48
4.2 Checking and Changing the Particle Filters ............................................................................................................. 48
4.3 Calibration Gases ..................................................................................................................................................... 49
4.4 Connecting the Calibra t ion Gas ................................................................................................................................ 50
4.5 Zero Calibration ....................................................................................................................................................... 51
4.6 Gain Calibration ....................................................................................................................................................... 53
4.7 Interference Calibration ............................................................................................................................................ 54
4.7.1 Interference Calibration Gases ......................................................................................................................... 55
4.7.2 Interference Calibration Procedure ................................................................................................................... 55
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4.7.3
Modified Interference Calibration Procedure ................................................................................................... 60
Chapter 5 Operation .................................................................................................................................................................... 61
5.1 About this Chapter .................................................................................................................................................... 62
5.2 Measurement Monitoring ............................................................................................................................................... 62
5.2.1 The Measuring Screen Layout .......................................................................................................................... 62
5.3 Import Data to Excel ................................................................................................................................................ 67
Chapter 6 1309 Multipoint Sampler ............................................................................................................................................ 69
6.1 About this Chapter .................................................................................................................................................... 70
6.2 System Description ................................................................................................................................................... 70
6.3 Setting up the IEEE – 488 Interface ......................................................................................................................... 71
6.4 Setting up the 1309 IEEE – 488 Address ................................................................................................................. 71
6.5 Connecting a 1309 to a PC ....................................................................................................................................... 72
6.6 Connecting a 1309 to a 1313 .................................................................................................................................... 72
6.7 Connecting Temperature Sensors ............................................................................................................................. 74
6.8 Mains Supply and Fuses ........................................................................................................................................... 74
Chapter 7 Process Computer Interface ........................................................................................................................................ 75
7.1 About This Cha pter .................................................................................................................................................. 76
7.2 PCI System Description ........................................................................................................................................... 76
7.3 Setting up the Pr ocess Control Computer’s RS – 232 serial interface...................................................................... 77
7.4 Process Computer Interface (PCI) Protocols ............................................................................................................ 77
7.5 Representation of Values in Registers ...................................................................................................................... 78
7.6 COMLI Communication parameters ........................................................................................................................ 79
7.6.1 Register Description ......................................................................................................................................... 79
7.6.2 The Interface Registers ..................................................................................................................................... 81
7.7 OPTOMUX Communication parameters ................................................................................................................. 91
7.7.1 Register Description ......................................................................................................................................... 91
7.7.2 The Interface Registers ..................................................................................................................................... 91
7.7.3 Command Structure ........................................................................................................................................ 100
7.7.4 Checksums ...................................................................................................................................................... 101
7.7.5 Response Struc t ure ......................................................................................................................................... 101
7.7.6 Initialising the Registers ................................................................................................................................. 103
7.7.7 Command Library .......................................................................................................................................... 103
Chapter 8 Troubleshooting and Error Messages ....................................................................................................................... 109
8.1 Servicing the 1313 .................................................................................................................................................. 110
8.2 Error Monitoring .................................................................................................................................................... 110
8.3 Test Hierarchy ........................................................................................................................................................ 111
8.3.1 Tests during Power Up ................................................................................................................................... 111
8.3.2 Tests during Power Up and During Start U p of the Measurement System .................................................... 112
8.3.3 Tests Durin g a Measurement .......................................................................................................................... 112
8.3.4 Tests Only During Measurement .................................................................................................................... 113
8.3.5 Starting the Troubleshooting .......................................................................................................................... 113
8.3.6 Communication Problems .............................................................................................................................. 113
8.4 Error and Warning Messages ................................................................................................................................. 114
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1313
Fermentation Monitor
BZ6009 – 1313 PC Software
December 2010
Safety Considerations __________________________________________________________________________________________
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Safety Considerations
The 1313 Fermentation Monitor is designed and tested to comply with EN 61010-1 (1993) and IEC 1010 – 1 (1990); Safety requirements for electrical equipment for measurement, control, and laboratory use. The protection provided by the instrument may be impaired if not used as specified by Innova AirTech Instruments. To ensure safe operation and retain the monitor in safe condition, special note should be made of the following:
Explosion Hazard!
TO AVOID THE POSSIBILITY OF AN E XPLOSION, MONITORING OF FLAMMABLE GASES IN EXPLOSIVE CONCENTRATIONS MUST NEVER BE ATTEMPTED.
Never operate this monitor in potentially explosive environments.
When monitoring potentially flammable or toxic gases it is essential:
The instrument itself is placed in a well-ventilated area outside t he potentially hazardous
zone; and
That a sufficiently long tube is connected to the Gas Outlet on the back panel so that the
sampled gas is carried away to the open air or to an extraction and/or filtration unit.
Warnings!
Water condensation in the instrument will damage it severely, and must therefore be
avoided.
Switch off all equipment before connecting or disconnecting their digital interface. Failure
to do so could damage the equipment.
Whenever it is likely that the correct function or operating safety of the apparatus has
been impaired, the apparatus must be made inoperative and be secured against unintended operation.
Any adjustment, maintenance and repair of the open apparatus under voltage must be
avoided as far as possible and, if unavoidable, must be carried out by trained service personnel only.
The instrument contains a lithium battery. Under no circumstances should this battery be
removed by the user as t here is a dan ger of explosion. The lithium battery should only be removed by an LumaSense Technical Support representative.
Applying Power Before using this apparatus, verify that the correct fuses are installed.
The instrument must always be operated with its chassis at earth potential. Only use power outlets that can supply an earth to the instrument.
Safety Symbols
Caution: Refer to associated instructions given in this Manual.
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About this Manual
This Reference Manual is for a monitoring system comprising a 1313 Fermentation Monitor and its associated PC software package BZ 6009. Also included are compre­hensive descriptions of using the 1313 with the 1309 Multipoint Sampler, with a Process Control Computer.
The software for 1313 is available in a Windows® XP version as: BZ6009 for 1313 Fermentation Monitor
Trademarks
MS-Windows are registered trademarks of Microsoft Corporation.
Copyright © 2007, LumaSense Technologies A/S
All rights reserved. No part of this publication may be reproduced or distributed in any form, or by any means, without prior consent in writing from LumaSense Technologies A/S, Ballerup, Denmark.
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Chapter 1
Introduction and Specifications
December 2010
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1.1 Broad Overview
The 1313 Fermentation Monitor simultaneously measures the concentration of carbon dioxide, oxygen and a specified hydrocarbon in a gas flow. The concentration of each gas is expressed as a volume percentage referenced to dry gas condition. Addit ionally, the concentration of the hydrocarbon can be expressed in mg/m3.
The measurement principles are based on photoacoustic spectroscopy and magneto­acoustic spectroscopy. A full discussion of these principles is contained in section 1.4.
The monitor is designed to be integrated into permanent monitoring systems to provide fast and accurate meas urement results over a wid e range of concentrations. Measure­ment results can be transferr ed via the moni tor’s anal ogue inter faces to a p rocess-com­puter or a personal computer (PC).
The monitor comes complete with PC software that allows you to configure and cali­brate the monitor prior to measuring, display the measurement data graphically while measurements are b ein g m ade. The s to r ed d ata ca n be re cal led at a l at er st a ge fo r clo s er examination.
Communication between the PC and the process computer is possible using the COMLI and OPTOMUX protocols. This communication enables you to access infor­mation from the 1313 and the 1309; and select the sampling sequence mode.
1.2 Monitor System Description
Fig.1.1 shows a block diagram of the 1313 Fermentation Monitor.
There are four basic blocks:
Control Software and PC Interface
Electro-mechanical and Electro-acoustic Measuring System
Alarm Relay and Analogue Outputs
Power Supply
1.2.1 Control Software and PC Interface
This block contains microprocessor based electroni cs that take care of interfaci ng the monitor to a PC via an RS-232 link, send control data to the measuring system and re­ceive measurement data from the measuring system.
There are no external controls on the monitor apart from the mains On/Off switch. All configuration of the monitor is, therefore, done over the serial link using a PC running the specially developed BZ 6009 software.
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Fig.1.1 Block diagram of the 1313 Fermentation Monitor
However, the monitor does have operating system software contained in read-only memory. When the monitor is powered up, this internal software checks the system to ensure it is working correctly and starts the monitor in the configuration it was in just before the last power shut-down. This configuration is held in an EEPROM and can only be changed by using the PC software.
This means that once configured and calibrated, you can disconnect the PC and monitor the actual gas con centrations via t he 0 – 24 mA outputs. If you want to r ecord the re­sults of measurem ents over t ime on a dat a-file, you must have the PC connected, since the results file is stored on the PC’s disk system.
1.2.2 Electro-mechanical and Electro-acoustic Mea s ur ing Sy ste m
This block is the heart of the monitor. It contains all the mechanics, transducers and processing electro nics necessary to do highly accurate meas urement of gas concentr a­tions. Measurement samples a re sucked into the measu rement chambers via the Gas Inlet or the Calibration Gas Inlet, depending upon the position of the moveable link (part of the particle filter, see Fig.1.1). The internal gas-circuits are ar ranged such that sampl es p ass through the measurement chambers in a continuous flow. Exhaust gases are expelled via the gas outlet. The reference gas used fo r oxygen meas urements (normall y ambient air) is drawn via the Ref. O2 Inlet.
1.2.3 Alarm Relay and Analogue Outputs
In this functional block, the electrical equivalent of the measured concentrations in the sample gases are o utput as cu rrents (0-24 mA), which can be used to interface to other monitoring equipment, for example a process computer.
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Alarm output indicating high percentage and low percentage concentration of the measured gases are also available.
The concentrations that cause the alarms to activate and the value of the current output with respect to a specific concentration are user definable.
1.2.4 Power Supply
The power supply included in the 1313 can be directly connected to a wide range of single phase mains supplies and still be able to produce the stable voltages required to keep the monitor within calibration.
The fan unit fixed to the front panel provides forced ventilation to keep the power sup­ply, electronics and mechanical parts in the system cool. The fan intake and the rear panel ventilation slots must be kept clear at all times.
1.3 Software Description
The BZ 6009 software is menu driven specifically written to control the 1313 monit or. The software allows you to change the operational parameters and see t he results of measurements on the PC screen.
The software can also be used to control up to three 1309 Multipoint Samplers. In­cluding these instruments in your system allows up to 36 different sample points to be measured by the 1313.
The software has the capabilit y of being controlled remotely by a process control com­puter using a process control interface based upon an RS–232 serial link. You can thus integrate your 1313 measuring system into a much larger monitoring and control envi­ronment.
You can also use the PC’s filing system to save a series of measurements for later recall either by the BZ 6009 s oftware or any other PC software that can interp ret a comma delimited file, for example certain spreadsheet programs.
Note though that the save-to-disk process is not a dump of data from the 1313 to the PC, but a process in which the data file on the PC is updated continuously.
Therefore, to use the PC to log data, it must be constantly attached to the 1313. This contrasts with the analogue outputs, which are always active during measurement, whether the PC is connected or not.
As well as providing control over the measurement configuration of the monitor, the software also has comprehensive calibration procedures that allow you to calibrate the monitor against known reference gas concentrations.
1.3.1 SF6 Version
A special version of the User Software is available for the 3429 and 1313 modified for SF6 as the BZ6010 software. Throughout this Manual for the 1313 Fermentation
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Monitor, BZ6009 should be substituted with BZ6010, and CHx should be substituted with SF6.
1.4 Acoustic Gas Measurement
Acoustic techniques for gas measurement are based on the principle that if energy is applied to a gas it will expand. Expansion causes an increase in pressure. If the applied energy is delivered in pulses, the pressure increase will be intermittent, resulting in a pressure fluctuation. The fluctuating pressure will manifest itself as a sound wave, which can be “listened to” by a microphone. The microphone will give an electrical output proportional to the intensity of the pressure fluctuations, which in turn are pro­portional to the concentration of the gas present.
The gases of major interest here are hydrocarbons, carbon dioxide and oxygen. Hydro­carbons and carbon dioxide readily absorb infra-red light, so this can be used as the ap­plied energy source to give pressure fluctuations. Oxygen is not affected by infra-red light in the same way, but is highly susceptible to magnetic “energy”, so this is used to give pressure fluctuations.
When using light as a stimulant to produce the sound wave, the technique is called photoacoustic spectroscopy (PAS). When the stimulant is magnetism, the term magne­toacoustic spectroscopy is used.
A further gas property that is used in PAS is that the wavelengths of infra-r ed light that each gas type absorbs is different. To benefit from this property, a gas sample is irradi­ated with infra-red light chosen to contain the wavelengths best absorbed by the gas. These wavelengths are then pulsed at different rates to produce different sound waves. By correctly filterin g the microphon e signal, the concentr ation of each t ype of gas can be measured, even when they are part of the same sample.
Photoacoustic Spectroscopy in the 1 313
The 1313 has four major components in its PAS based measuring system (see also
Fig.1.2):
A stable infra-red source
• Mechanical pulsation system
• Measurement chamber
Microphone
The infra-red source provides infra-red light with a broadband spectrum. Unless the amount of light and spectral content is kept constant for every measurement, it is not possible to determine the absolute gas concentration referred to a calibration gas. Therefore, the infr a-red source is kept stable by electronic feedb ack systems, thus en­suring the quantity and spectral content remains constant.
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The infra-red point source is located at the focus of a concave mirror. This is used to provide a beam of infra-red light, which is focused through the chopper wheel into the measurement chamber.
The chopper wheel is driven by an electric motor running at a constant speed. The chopper wheel consists of three sets of concentric holes. The full infra-red beam from the mirror is incident on one side of the chopper wheel. After passing through the holes in the wheel, the beam is effectively divided into three beams pulsating at different fre­quencies. The pulsation frequency is determined by the whole spacing and motor speed.
Fig.1.2 Schematic representation of the measurement system
In terms of rise time and ambient noise suppression, a high pulsation frequency is de­sirable. However, one must also consider that high frequencies also result in less time for the applied ener gy to affect the gas, giving smaller output signals from the micro­phone. The frequencies used in the 1313 are chosen to give a balance between the sig­nal level and noise suppression requirements.
Each light beam now passes through an optical filter located on the measurement chamber. The focusing of each pulsating beam is arranged such that it only passes through one filter. Each filter only allows one specific wavelength of infra-red light to pass. Thus the beams entering the measurement chamber from the filters will be nearly monochromatic, but still pulsating at their specific frequency.
The filter wavelengths are optimised to match the absorption spectra of hydrocarbons, carbon dioxide and water vapour.
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The filter associated with hydrocarbons is centred on 3.4 µm (2950 cm-1), the filter as­sociated with carbon dioxide is centred on 4.3 µm (2350 cm-1), and the filter ass ociated with water vapour is centred on 5.3 µm (1900 cm-1). Water vapour is measured to com­pensate for the humidity of the sampled gas.
In the measurement cha mber th e three beam s, whi ch diff er in wavel ength and p ulsat ion frequency, each excite their respective gas (if present). The absorption of the incident light will cause the gas to expand and contract at a frequency equal to the pulsation fre­quency. The resulting sound waves will fill the measurement chamber and be propa­gated further on in the gas circuit. A microphone is mounted close to the measurement chamber such that it can “hear” the gases.
The output of the microphone will be a complex waveform made up of t he individual intensities and f requencies associated with ea ch gas. This waveform is amplified and converted into a digital signal. A digital signal processor then extracts the individual components of the combined signal. The three resulting digital waveforms will be pro­portional to the concentration of the gas in the measurement chamber.
By calibrating the system with known concentrations of hydrocarbon, carbon dioxide, oxygen and water, the absolute concentration values can be calculated.
Advantages of Photoacoustic Spectroscopy
Photoacoustic gas measu rement is based on t he same principles as conventional infra­red base gas anal ysers, nam ely the abili ty to absorb infra-red light. However, there are some important differences between PAS and these conventional techniques.
In the standard IR-analyser, the energy abso rbed by the gas sample is measured indi- rectly by measuring the transmission through the measurement chamber and comparing it to that transmitted through a reference cell. With P AS the amount of infra-red ab­sorbed is measured directly by measuring the sound energy emitted on the absorption of light. This means PAS is highly accurate with very little instability. For example, zero point drift is small as zero is always reached when no gas is pr esent – with no gas present there is virtually no acoustic signal.
Furthermore, with PAS all gases and vapours can be monitored simultaneously in a single measurement chamber when the correct filtering of the microphone signal is used. The use of a microphone is also a major difference over traditional IR-analysers that use photo-sensors to detect the signal. In the 1313 an optimised condenser micro­phone is used as the detector.
LUMASENSE have many year s experience with such microphones and th e processing of microphone signals. The microphones and associated processing electronics used in the 1313 are of an exceptionally high quality. They give a high degree of stability and reliability, which means calibration is rarely required.
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Magnetoacoustic Spectroscopy in the 1313
The 1313 has two major components in its Magnetoacoustic Spectrosco py based meas ­uring system (see also Fig.1.2):
• A switched magnetic field
Microphone
In PAS, the ener gy sour ce t o exci te th e gas i s in fra-red light. In magneto acoustic spec­troscopy, the source i s a magnetic field . An alternating ma gnetic field appli ed to a gas containing oxygen will cause the oxygen to expand and contract, causing sound waves, as in PAS. Unlike PAS however, elaborate filtering techniques do not need to be ap­plied to the excitation energy since ox ygen is the only paramagnetic gas that will be measured by the 1313.
There is no actual measurement ch amber in the o xygen measuring circuit. Instead, the gas sample is subjected to the magnetic field just after it has passed the PAS system. Because the frequency of the magnetic field is chosen to be different from those used in the PAS system, the same microphone can be used to detect the sound waves resulting from the oxygen expansion and contraction.
In theory, the absolute value of the oxygen in the sample gas can be directly measured in this way. However, to obtain the same degree of accuracy in measuring gas concen­trations as that obtained using PAS, the measured signal is compared to a r efer enc e s i g­nal.
The reference si gnal is generated b y passing a reference gas containing a known co n­centration of oxygen through the same magnetic field as the sample gas. The reference gas will also produce a sound wave directly proportional to its oxygen content. This sound wave is measu red by a second micropho ne solely associated with the reference gas circuit. The output of this microphone is passed into a similar digital processing system as the sample microphone.
When the processing system has extracted the information about the oxygen concentra­tion in the sample and the reference, the two measurements can be compared to the stated concentrati on of the reference gas. An y difference betwe en the reference gas’s measured and stat ed concentration wil l be used as an of fset to correctl y determine the absolute concentration in the sample gas.
In normal practic e ambie nt ai r is u sed as the refer ence gas fo r the o x ygen m easuremen t as it contains a stable amount of oxygen – 20.95 % referenced to dry gas condition.
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Chapter 2
Installation and Getting St arte d
December 2010
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2.1 Installing the Monitor
The 1313 monitor is designed to fit in a 19 inch rack. The front pan el has a s erial-link socket for the PC interface and a gas inlet for calibration gases. The mains input, ana­logue output, alarm relay output, sample gas inlet and outlet for expelled gas samples are located on the rear panel.
2.1.1 Operating Environment
The following environmental conditions must be observed:
Safe ambient operating temperatures range from 10°C to 40°C (50°F to 104°F).
Humidity should not exceed 90% RH non-condensing at 40°C.
Vibrations must be avoided as these can upset the quality of the measurement
data.
Keep the front panel fan intake and rear panel ventilation slots unobstructed at
all times.
Warning! The monitor is not intended for use in explosive environments and should be kept well away from flammable gases and liquids. Avoid excessive heat, dust and di­rect sunlight.
2.1.2 Transportation Protection
The monitor is equipped with two special locking-screws for prevention of acci dental damage to the measurement transducers during transportation. These protection screws must always be loosened before the monitor is used.
Loosening the transport protection screws should be carried out by a qualified techni­cian.
Caution! Be careful not to touch the chopper wheel when loosening the protection screws!
To loosen the transportation screws:
1. Ensure that the monitor is disconnected from the mains power supply.
2. Remove the ten pozidrive screws that secure the top plate in position and lift
this plate off.
3. Locate the protection screws (see Fig.2.1).
4. Loosen the screws by rotating them anti-clockwise until they cannot be turned
any more.
5. Replace the top plate and re-secure it in place.
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Fig.2.1 The transportation screws (indicated by arrows)
Note: it is not necessary to use the transport protection during local movement of the monitor. However, the protection screws should be tightened again before the monitor is moved over longer distances.
2.1.3 Current-loop and Alarm Relay Outputs
The 1313 has analogue outputs giving a current (between 0 mA and 24 mA) equivalent to the gas concentration, and two isolated single-pole relay contacts giving over- and under- concentration alarms.
The analogue output connector is located on the rear panel of the monitor (see Fig.2.2). The connector has sixteen individual screw terminals, which are assigned as shown in
Table 2.1.
The higher numbered terminal in a pair is positive. The three analogue outputs are gal­vanically isolated from each other and from the chassis.
The ground connections are all connected together internally and are provided as an an­choring point for any screens that your data-cables may have. To comply with EN 50082–2 (Immunity to RF fields), it is necessary to use screened cables an d co nn ect t he screens to the chassis terminals.
To connect wires to the analogue output connector:
1. Choose the desired screw terminal.
2. Using a flat-blade s crewdriver, loosen the s crew imm ediately abov e the desired
terminal number.
3. Insert the wire into the terminal above the loosened screw.
4. Tighten the screw again, ensuring that the wire is now gripped firmly in the
terminal.
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5. Repeat steps 1 to 4 to connect all t he necessar y wires for the analogu e outputs
you need.
Fig.2.2 The Current Loop and Alarm Relay connector
Screw Terminal
Number
Assignment
1 & 2 Low limit relay 3 & 4 High limit relay
5 Chassis
6 & 7 Hydrocarbon values
8 Chassis
9 & 10 Carbon dioxide values
11 Chassis
12 & 13 Oxygen values
14 Chassis
15 & 16 Unassigned
Table 2.1 Assignments for the analogue output socket
The range of the signals that come from the current outputs are user-scalable (the us­able range is between 0 and 24 mA). This enables you to select a ran ge that best suits the concentrations of the gas you are measuring, and obtain the optimum resolution for the process computer. These definable v alues are set via th e PC soft ware. Defin ition is described in section 3.3.1.
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2.1.4 The Gas Sample Line
The gas to be sampled (measured) is drawn from the sample point via a sample line at a flow rate of 130 ml/min. Various types of sample lines are available depending on the individual applications. The sample line tubing between the sample point and the monitor should be kept as short as possible to assist response times. If you are unsure about the type of sample line for your application, contact your LUMASENSE repre­sentative for advice before installing the system.
The pressure differ ence bet ween the monitor’s gas inlet and the ambient must be in the range from – 5.3 kPa to +2 kPa. When a positive higher pressure exists, a surplus path to the ambient can be established.
A 3.3 kPA pressure drop across the sampling line used corresponds to the following sample tube lengths:
Inner diameter of 1 mm gives a length of 2.5 m
Inner diameter of 2 mm gives a length of 40 m
Note: You must use a filter in the gas-line immediately before the gas-line enters the monitor. The UD 5057 in-line filter (opt ional accessory) is ideal for this purpose. For details of changing the filter element in the UD 5057, please refer to section 4.2.
The gas inlet for the sample line is located on the rear panel of the monitor. The stan­dard nozzle installed accepts PTFE tubing with a 4 mm external diameter. LumaSense recommends that the internal diameter of the tube is 2 mm. Be sure to press the tubing as far into the nozzle as possible to ensure a gas tight seal.
Moreover, to help humidify or de-humidify the sample gas, LumaSense also recom­mends that at least a 1 m length of Nafion® tubing be incorporated into the sample line.
If the dew point of the gas sample is comparable to the temperature in the monitor, Nafion tubing can be used to remove water and eliminate the risk of condensation in­side the monitor. If the gas sample is completely dry, it is advisable to humidify the sample by using Nafion tubing as this will improve the precision of the CO
2
measure-
ment.
Nafion is impermeable to O2, CO2, CH4 and most other hydrocarbons, whereas alcohols and other gases will completely or partly penetrate through the material. Contact an LUMASENSE Technical Support representative for advice on whether or not to use Nafion when monitoring a particular gas.
You should protect the Nafion tubing against the effects of ultra-violet light, as this re­duces the tubes lifetime. Nafion tubing should be replaced at regular intervals to ensure that it still behaves according to specification.
After entering the monitor, every gas sample immediately passes through the particle filter located on the front panel. To inspect the condition of the particle filter, please see
section 4.2.
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The standard nozzles can be removed to enable other adapters or connectors to be fit­ted. When the nozzle is removed, the gas inlet has an 1/8th inch British Standard Par­allel (BSP) thread. It is important that any other connectors used here have exactl y the same thread.
2.1.5 Mains Supply
Warning. The monitor must be used with protective earthing.
The monitor operates in the AC voltage range from 85 – 264V on a single phase su p­ply, 50 Hz – 60 Hz.
The power cable is connected to a socket on th e r ear panel. The on-off swit ch i s l ocat ed immediately above this socket.
2.1.6 Checking and Changing the Fuses
On delivery, two 20 mm T1.6 A slow-blow fuses are installed in the monitor – one i n the live and one in the neutral mains feed. If you want the monitor to conform to CSA­approved standards, you must use the additional fuse holders (JS 0075) supplied with the instrument, but using 32 mm T1.6 A slow-blow fuses instead. When replacing fuses always ensure that the correct fuses are used.
To check and change the fuses:
1. Remove the power cable from the mains socket.
2. Insert a small screwd river under the top edge of the plate co vering this socket
and use it to lever the plate downwards. See Fig.2.3.
Note: The cover cannot be removed when the power cable is connected to the monitor.
Fig.2.3 Opening the fuse-holder cover
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Fig.2.4 Accessing the fuses
3. Take out the fuse holders (they each have a small white arrow on them as
shown in Fig.2.4).
4. Remove the fuses from the holders and check that they have the correct rating
(T 1.6 A slow-blow).
5. If the installed fuses do not have the corr ect rating or are fault y, install the cor-
rect fuses.
6. Put the fuse holders in the monitor, ensuring that their arrows point in the same
direction as the arrows on the inside surface of the covering plate.
7. Slide the fuse holders into position.
8. Flip the top plate back and press it gently into place.
9. Attach the mains cable.
2.2 The BZ 6009 Software
This software provides procedures to:
Set-up and Calibrate the monitor prior to measuring
Display measurement data as coloured graphics
Store measurement data on the PC’s disk while measurements are being made
Provide a link between the monitor and the process computer.
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The BZ6009 application can be installed by using the BZ6009 software CD-ROM.
2.2.1 Computer Requirements
The minimum requirements to run this software are:
Standard PC personal computer (minimum a Pentium 4 processor or compatible) equipped with a minimum 512MB of RAM memory
Must be equipped with at least one RS-232 serial port or alternativel y at least one USB­port with a connected USB-to-serial converter, LumaSense accessory no. JV0901. In case that a process comp uter is to be conn ected, a second serial port or a second USB­port with a connected USB-to-serial converter is needed.
CD-ROM drive
Windows XP with Service Pack 2
VGA colour graphics adapter output with minimum 1024 x 768 Screen resolution.
In case that a 1309 Multipoint Sampler is used in your fermentation system an IEEE interface card from National Instruments GPIB NI-488.2 must be installed in your per­sonal computer with its drivers successfully installed.
2.2.2 Installing the Software on the PC
Before the software can be installed and started, the PC must fulfil the n ecessary re­quirements (see section 2.2.1). It is recommended that the person who installs the BZ6009 application is familiar with installing programs i.e. your system administrator.
1. Switch on the computer and its peripherals.
2. Login as Administrator and make a new User Account in the Control Panel with
the user name ‘BZ6009’. Create this BZ6009 user with Administrator rights.
3. Now logout and login as the new user named BZ6009.
4. Insert the BZ6009 Application software CD-ROM disk into the C D-ROM drive
and wait for the auto-start of the BZ6009 installation package. In case that auto­start is disabled for your CD drive, you will manually need to start the BZ6009 installation package found on the software CD-ROM disk.
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5. After a while the welcoming window appears. Select ‘Next’ to continue
installation.
6. In the next window it’s possible to change the directory on the harddisk where
the BZ6009 program will be installed. Normally this should not be changed. Select ‘Next’ to continue installation.
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7. Now you’re ready to install the BZ6009 software. Select ‘Install’ to begin the
installation.
8. During installation the following window appears.
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9. When installation is completed you just select ‘Finish’ in order to finish the
installation of the BZ6009.
10. It is now possible to start the BZ6009 Application by using BZ6009 shortcuts
found
a. on the desktop or b. in Start->All Programs->Lumasense Technologies->BZ6009. c. Also the BZ6009 application is started automatically when you’re log-
ging in as the BZ6009 user.
2.2.3 Activate automatic lo gin and Auto s tart BZ6009
To handle a power off situation during operation properly, it is required that the Win­dows Operating s ystem has b een set to m ake an autom atic login i n order t o recover t he operation of the fermentation system.
The following link is an article from Microsoft, which describes how to enable the automatic login when using the Windows XP operating system:
http://support.microsoft.com/kb/315231
Also the automatic start feature must be enabled in the BZ6009 Set-up screen by setting the ‘Auto start’ to ON.
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2.3 Connecting the Monitor to the PC
In order that the 1313 monitor and PC can communicate, you must link the two to­gether. The monitor has a standard RS – 232, 25-pin D-range male socket on its front panel. This is the digital interface used to communicate with the 1313 monitor. This must be connected to a free serial port (COM port) on your computer using a serial in­terface cable.
We strongly recommend that you order serial interface cable WL 0945 (25-pin to 9pin) or WL 0946 (25-pin to 25-pin) from LumaSense Technologies A/S. This will ensure problem-free communication between the monitor and the software. The interface cable must be ordered separately. The standard length of the cable is 1.5 m, but you should state the length of cable required to meet your needs when you order. The pin connec­tions for the cables are shown in Fig.2.5.
LumaSense provide, as an optional accessory with part no. JV 0901, a converter fro m RS-232 to USB.
Before connecting eithe r end of the s erial interfa ce cable to th e respectiv e instru­ment, ensure that both instruments are turned off, otherwise you are liable to dam age the sensitive circuitry in either the monitor, the computer, or both.
When making the connection to the computer, note down which COM port you have used – you will require this information to set up the communication parameters, in
section 2.9. You may choose to use the ports COM1 to COM9. If you are unsure, refer
to information about your computer to identify the port name.
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Fig.2.5 Pin connections for cables WL0945 (top) and WL0946
2.4 Starting the Monitor
After connecting the PC to the monitor, you can turn on the PC and the monitor.
There are three si gnal lamps (LEDs) on the front panel of the monitor, giving the fol­lowing indications:
Power Signal (green ) — lights constantly when power is applied to the power
supply.
Service Signal (amber) — lights constantly when the power-on self-test has
failed or a detectable er ror has occurred during th e last time the monitor was powered up. To see what the error may be, use the Test 1313 option on the Main Menu (see section 2.7).
25 Pin Connector
950105_1e
Connector Housing
P GND
TxD
RxD
RTS
CTS
1
2
3
4
5
25 Pin Connector
Connector Housing
3 RxD
2 TxD
8 DCD
IBM PC
Monitor
6
DSR
S GND
7
DCD
8
20 DTR
7 S GND
4 RTS
5 CTS
6 DSR
DTR
20
1
P GND
25 Pin Connector
Connector Housing
P GND
TxD
RxD
RTS
CTS
1
2
3
4
5
9 Pin Connector
Connector Housing
2 RxD
3 TxD
1 DCD
IBM PCMonitor
6
DSR
S GND
7
DCD
8
4 DTR
5 S GND
7 RTS
8 CTS
6 DSR
DTR
20
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Alarm Signal (red) — l ights constantly when the user-set alarm conditions are
met or the alarm conditions cannot be tested because the monitor is in another state. The LED blinks when the monitor is attempting a reset after detecting an internal failure.
2.5 Starting the Software
Once the software has been installed on the PC as described in section 2.2.2 and the interface connecti ons between the monitor and the PC have been made (s ection 2.3), you can start the software.
2.5.1 To start the Software
1. Double click on the BZ6009 Icon on the Desktop or browse for the program b y
clicking on start.
2. Browse for the BZ6009 program in Start->All Programs->Lumasense
Technologies->BZ6009.
3. After installation the Software is setup to start automatically when making a
logon as the BZ6009 user.
The main menu screen will be displayed on screen (see Fig.2.6).
Fig.2.6 The BZ 6009’s Main Menu Screen
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2.6 Using the Software
This section explains the various parts of the screen and tells you how to use the menu system to “drive” the software. Feel free to try the various movement commands as you read through this text. Note: If an incor rect COM port is set, not every screen will be available to you (see section 2.9).
2.6.1 Screen Layout
Nearly every screen presented in t he BZ 6009 software is b ased upon the same screen design. The main exception to this is the measurement screen. The Main Menu screen, see Fig.2.6, is an example of a “standard” screen.
Title Bar
Located at the top of the screen, this area gives the title of the BZ6009 program.
Menu Bar
Located below the title bar, this area offers pull-down menus used for choosing the dif­ferent setups, measurement, calibration or utilities.
Workspace
The workspace is the main area of a screen on which information and parameter values are printed.
Information
Read-only information appears in popup windows when the Mouse - Cursor is held over an input field. It either tells you the name of a parameter that can be altered or some properties about the parameter.
Input Fields
Workspace text t hat appears in white field shows the current value of a parameter that can be changed or selected by you.
2.6.2 Moving around th e Sc re en
The BZ 6009 is menu-driven software. You move around the screen to highlight the parameter or option fields you want to work with.
The <Tab> key will move the cursor to the next field.
<Shift> <Tab> will move you to the previous field.
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2.6.3 Entering Values
Enter numeric values via the keyboard. Positioning the cursor over a numeric value will display a popup text to tell you what to do.
If you enter a value that is out of the expected range, there wi ll b e an erro r windo w and you must enter a value within range.
When you move the highlight away from a field, the value in the field at that time re­mains the current one, that is, it is entered into the system. You do not press <Enter> to accept a value.
Pressing on <ok> returns you to the Main Menu and writes any changes you have made either to the configuration file or to the 1313 monitor, whichever is appropriate.
2.6.4 Information Screens
When the BZ6009 software is changing from one screen to another an information-only screen is often presented. The information is usually about a communications process that the software is working on, for example establishing the link to the monitor. If the communication fails for any reason, you will see error messages on this screen.
Some information-only screens appear for a limited ti me (say 5 seconds ) and disappear automatically.
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2.7 Test 1313 & 1309
Selecting this option (Test 1313/1309) from the Utilities Pull-down menu brings up a screen showing any current and internally logged errors detected by the monitor.
This is useful in helping with the diagnosis of any problems you may be having with the system.
Fig.2.7 The BZ 6009’s Test 1313/1309 Screen
The BZ 6009 and 1313 have built-in test procedures that are able to monitor various electronic and mechani cal parts – for example, the flow rate, memory checksum, inter­face and so on. If anything abnormal is detected with any of the parameters test ed for, the error will be repo rted eit her directl y on the PC s creen or b y the Service LED bein g illuminated.
The monitor is able to take limited action itself to rectify an error, for instance per­forming a reset of the microprocessor system if the fault lies in this area. If it can rec­tify the fault, the monitor will proceed as it was before interrupted.
Errors generated in the 1313/1309 are also logged internally for subsequent display by the Test 1313/1309 optio n. Logged errors are erased from the lo g after they have b een displayed once on the Test 1313/1309 Screen.
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2.8 Stopping the Software
To stop the software and return to the Windows desktop close the window or select exit under the Setup menu.
Note it is not possible to stop the Software if a measurement is running.
2.9 Selecting the Correct Serial Port
Before you begin using the monitor, you must ensure that the BZ 6009 software is set to use the same serial port (COM port) as that physically used. To set the corre ct port, do the following procedure:
1. With the Main Menu screen displayed, select BZ6009 Set-up under the Setup
menu.
2. Select the COM port in the drop down box 1313 Connection.
3. Click on <ok> to return to the Main Menu.
The system should now be ready for use.
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Chapter 3
Configuration
December 2010
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3.1 General Information
This chapter guides you through the configuration options available on the Main Menu. You should configure both the software (the BZ 6009 program) and the hardware* (the 1313 monitor and a 1309 if installed) to suit your local requirements before calibrations and measurements are made.
It is assumed that your 1313 monitor and computer have be en installed correctly and you are familiar with using the software. For instructions on installation and using the software see Chapter 2.
Note: the calibration procedure is covered in Chapter 4 and general oper ation proce- dures are covered in Chapter 5.
3.2 Software Configuration
3.2.1 BZ 6009 Set-up Scr een
When the Main Menu screen displayed, select BZ6009 Set-up from the Setup pull­down menu.
This screen is divided in three sep arate secti ons: Gen eral Set-up, Gas Cur ves and 1309 Sampling (see Fig.3.1). These are described in more detail in the following sections.
To perform the set-up and leave press the “OK”-button.
Press the “Cancel”-button to leave without making any c hanges.
Fig.3.1 The BZ 6009 Set-up screen
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3.2.2 General Set-up
There are seven parameters associated with this part of the screen:
Auto Start
1313 Connection
• Remote
• Remote Interface Protocol
• COMLI Slave Address
• Data Recording
• File Name
Auto Start
This option enables the software to start up directly in the measurement screen. It is often used to ensure that on-screen display of measurements will continue automati­cally after a power failu re. The parameters used for the display are those set when the program was last configured.
In order to invoke automatic measurement screen display, the Auto Start option must be set to ON.
The 1313 monitor will always restart in measurement mode.
1313 Connection
This option enables you to choose the correct serial interface port on the PC that the 1313 monitor is connected to. You only need to use this option during the initial in­stallation of the software on a computer (see section 2.9).
Remote
This option must be set to OFF unless the PC running the BZ 6009 software is also connected as a slave to a process control computer. Also the serial port (COM port) you are using to connect the PC to the process control computer if applicabl e. For more in­formation on the remote option, please refer to Chapter 7.
Remote Interface Protoco l
This option must be set in order to select the communication protocol that you are using towards the process control computer. The COMLI or the OPTOMUX communication protocol can be sel ected. For more information on the remote interface protocol option, please refer to Chapter 7.
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COMLI Slave Address
This option sets the COMLI slave address of the PC. This address is required when using the COMLI protocol to communicate with the process computer. The possible slave addresses is from 1 to 255. For more information on the COMLI slave address option, please refer to Chapter 7.
Data Recording
Data recording has two options: ON and OFF.
When ON is displayed, all the measurement data from the monitor is stored in the file defined in the File Name option (see below). When OFF is displayed, the function is disabled.
File Name
The directory and filename for the data file can be selected by using the Button: “Select Data File”. A filename extension is not necessary but can be added i.e. .txt
Date Stamp and Serial Number can be inserted into the filename.
If Date Stamp is ON: YYMMDD is added to the filename, where YY is year, MM is month and DD is day of the month.
If Serial Number is ON: Xnn will be added to the filename, where nn is the serial number of the file, running from 01 - 99. If the BZ6009 application is restarted, the serial number will be incremented by 1.
Example: Directory and filename is defined to be: Z:\log.txt
If the “Date Stamp” is enabled, the resulting filename will be: Z:\logYYMMDD.txt.
If the “Serial Number” is enabled, the resulting filename will be: Z:\log.Xnn.txt
If both “Date St amp” and “Serial Number” are e nabled, the resu lting filenam e will be
Z:\logYYMMDD.Xnn.txt
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When you stop a measurement, the current data file will be closed. Should you restart measurement in the same software session (i.e. without quitting the program), you will be given the choice t o ei th er app end t h e n ew m e as u remen t d ata t o t he fi l e n am ed on the set-up screen, or erase the existing data and rebuild the data file.
The measured data is stored in a format that is easily transferred to, and used by, spreadsheet programs like for instance Microsoft Excel.
The format of the data in the file is shown below.
Data separator: comma
Text delimiter: none
Decimal separator: 0.00
3.2.3 Gas Curves
This part of the set-up screen determines what is displayed on th e measurement screen when you select Measurement. It allows you to choose:
Which gas concentrations are displayed on the screen
The Y-axis scaling for the individual gases
The units for hydrocarbon measurement
• The data rate
Displayed Gas Curves
To define which gas co ncent ratio n cu rves are sh own on the measu rem ent screen, select the status (ON/OFF) to t he right of the desired gas and select between ON (display gas curve) and OFF (hide gas curve).
Data Rate
The monitor continuously makes measurements on the gas sample (up to 20 a second). The value of the m easurement is averaged wi th a cumulative display-average to pro­duce a new cumulative display-average. The data rate defines ho w long the averaging process continues before the cumulative display-average is displayed on the screen. After display, the cumulative display-average is set t o zero and a new set of measure­ments begins for the next averaging period.
The data rate can only be defined for carbon dioxide, but the other gases adopt the same data rate automaticall y. The data rate can range from 1 to 999 seconds in one second steps.
Attention must be paid to this parameter when Data Recording is enabled. For example, if you are using the monitor to measure gas samples over a long period of time, say several days, a short data rate will create a very large data file.
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Scaling
These values set the scale of th e Y-axes for th e three graphs displa yed during a meas­urement.
Choose minimum (bottom scale value) and maximum (top scale value) concentrations. The displayed values are scaled to fill the screen height between these values. The minimum concentration can be larger than the maximum concentration, thus “invert­ing” the curve.
Unit
This option allows you to choose the displayed measurement units for the h ydrocarbon. You can choose between volume % and mg/m3. When the latt er is selected two mor e fields appear where you should enter the normalisation pressure (kPa) and temperature (°C) which are to be used in the conversion to mg/m3 from %.
The normalisation pressure is default set to 101.3 kPa (1 atm.). The values of pressure and temperature entered should be regarded as the standard condition to which your measurement will be normalised. Normally this standard condition is different from the actual pressure and temperature at the sampling point.
Carbon dioxide and oxygen are always displayed as volume %.
3.2.4 1309 Sampling
Unless you have a 1309 Multipoint Sampler connected to your PC, Status must be set to OFF.
The values of the following three parameters have no meaning when Status is OFF:
Sampling Period
Flushing Time
Repeated Sampling Sequence
When status is set to ON, these three parameters must be set.
Sampling Period
The sampling period spe cifies how l ong ea ch ele ment of t he samp le sequ ence will last. Each element is associ ate d wit h a gas ch annel . A n el emen t o f a sampling sequence con­sists of two parts, flushing time and averaging time.
The flushing time is the time when the 1313 is not recording measurements.
The averaging time is the difference between the sampling period and the flushing time. For example, if the sampling time is 60 seconds and the flushing time 45 seconds, the averaging time will be 15 seconds. In these 15 seconds, the sample gas passing
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through the measurem ent chambers is repeatedly measu red. After the 15 s econds have passed, the average of al l the measu rements m ade is c alculated an d used as the curr ent measurement value for the gas channel connected.
The gas curves for a particular gas chan nel displayed on the measurement screen wi ll be updated at a rate equival ent to the length of the sampl e sequence. The exception to this is gas channel 1313. Gas channel 1313 can b e considered to be th e gas line from the 1309 to the 1313. The display rate for this channel is set by the Data Rate value on the BZ 6009 Set-up screen (see section 3.2.3).
The sampling time can have a minimum value of 1 second and a maximum of 9999 seconds.
Note that depending upon the sampling order of the gas channels, the flushing time may automatically be set to zero for certain elements of the sampling sequence (see
Repeated Sampling Sequence).
Flushing Time
The flushing time is set to a value that will ensure all traces of the previous sample have been expel led from the measurement chambers. The time is dep endent upon the length of sample line connecting the 1309 to the 1313.
The flushing time can have a minimum value of 0 seconds and a maximum of 9998 seconds. The flushing time must always be smaller than the sampling time. This im­plies that the minimum averaging time allowed is 1 second.
Repeated Sampling Sequence
Each 1309 connected to the system has up to twelve gas channels available. For 1309 number 1 these are known as gas channels 1 to 12. The second and third 1309’s hav e gas channels 13 to 24 and 25 to 36, respectively.
In the Repeated Sam pling Sequ ence fi eld you can specif y a sequenc e of up t o 72 chan­nels. You type in each channel number in the sequence separated from the next by spaces. Repeated channels are allowed. This allows you to monitor critical sample points more frequently. When the sampling sequence has been completed it will restart from the beginning.
For example, consider the following set-up:
Sampling time: 60 seconds
Flushing Time: 30 seconds
Repeated Sampling Sequence: 1 2 2 3 4 1 2 2 3 5 1 2 2 3 6
This information can be displayed graphically as:
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Gas = flushing time = averaging time Channel
time in minutes
Note: The sampling sequence must contain at least two different channels. You cannot enter a sequence with only one channel.
3.3 Hardware Configuration
This section describes how you set-up the limits to be used with the analogue outputs and alarm relays in the 1313. The configuration of these hardware limits is done via software. There are no physical controls.
3.3.1 0 – 24 mA Set-up
When the Main Menu screen displayed, select 0-24mA Set-up from the Setup pull­down menu.
Note: When you enter this screen, the alarm light will come on. This is an indication that the system is unable to provide alarms, since you are about to change parameters that affect alarm status.
To set the analogue outputs:
Press the “Perform Analogue Output Set-up”-button.
Press the “Exit”-button to exit the screen.
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Fig.3.2 The Analogue Output Set-up screen
For information on connecting the analogue outputs to other equipment, see section
2.1.3.
There are three analogue outputs from the monitor. They are configured as current­loops, capable of giving up to 24 mA. The instantaneous current on these loops is pro­portional to the value of the gas concentration associated with the loop. The actual value of the current depends upon how you have set the limits using this option screen. During set-up and fault conditions in the monitor, all currents will be zero.
Output Current
The two fields associated with this option specify the minimum current (low) and the maximum current (high) for all three analogue outputs. The low current must always be less than the high current. The highest current output available is 24 mA. If you want to set the high current to a value less than the existing low current value, you must change the low value first. The help bar will guide you.
By adjusting the low and high currents, in combination with t he as sociat ed gas co ncen ­trations, you can effectively control the offset and gain of the analogue output sent to the attached equipment (plotter, chart recorder, etc).
Carbon Dioxide
The two fields associated with this option specify the percentage carbon dioxide to be associated with the set low and high currents.
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If you change the output current limits, the previous concentration limits are scaled automatically to the new range, such that the same current is output for the same con­centration as before the chan ge. If the suggested values are not co rrect, change them, getting guidance from the help bar if necessary.
For example, you have set the minimum current to be 5 mA and the maximum current to be 20mA. You could now set the carbon dioxide concentrations so that 1 % corre­sponds to a current of 5 mA and 10 % corresponds to 20 mA.
In this case, any concentration over 10 % will give a constant 20 mA output and any concentration under 1 % will give a constant 5 mA output.
If you now chan ge the low current limit to be 0 mA, the low concentration value will automatically chan ge to – 2 %. It does this so that a concentration of 0 % will still give 5 mA output. (The software has determined by extrapolation that to give the same cur­rent at the same concentration, the limits must be set negative.)
The same process is also valid for high current limit values.
Oxygen
The two fields associated with this option specify the percentage oxygen to be associ­ated with the set low and high currents.
The same principles as setting the carbon dioxide limits apply.
Hydrocarbon
The two fields associated with this option specify the concentration of Hydrocarbon to be associated with the set low and high currents.
The same principles as setting the carbon dioxide limits apply.
Data Rate
The monitor makes meas urements on t he gas sample ev ery 1 s . The value o f the meas­urement is averaged with a cumulative output-average to produce a new cumulative output-average. The data rate defines how l ong the avera ging process continues before the cumulative output-average is transmitted by the monitor to the analogue interface. After transmission, the cumulative output-average is set to zero and a ne w set of m eas­urements begins for the next averaging period.
The output current is held constant during the averaging period.
The data rate can range from 1 to 600 seconds (where 1 corresponds to the fastest rate).
This Data Rate (ho w often the analogue interf ace is updated) is affected by the Data Rate parameter in the BZ6009 Set-up screen (how often the screen is updated), but only when the measurem ent s creen is active. This is because the 1313 only produces one set of measurement d ata, so th e two data rate v alues mus t be interleav ed. The tabl e below shows the interaction of the two data rates.
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Data rate
Data Rate specified on BZ6009 Set-up screen
specified on
0–24 mA
1 2 3 4 m
screen
1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 4 4 4 4 4 4
n
n n n n n
Table 3.1 Resulting analog output data rate, when the measurement screen is active
Unit
This option determines the measurement units for the hydrocarbon. You can choose between volume % and mg/m3. When the latter i s selected, two more fields appear in which you must enter the normalisation atmospheric pressure (kPa) and temperature (°C), which are used in the conversion to mg/m
3
from %.
Carbon dioxide and oxygen are always measured as volume %. The concentration val­ues refer to a dry gas condition.
You will also notice that the units associated with the output current concentration change depending upon the setting of this option, and similar to the Data Rate, the Unit selected on this screen is independent of the Unit selected on the BZ6009 Setup screen, which is used solely for the measurement screen.
3.3.2 Alarm Relays Set-up
When the Main Menu screen displayed, select Alarm Relays Set-up from the Setup pull-down menu.
Note: When you enter this screen, the alarm light will come on. This is an indication that the system is unable to provide alarms, since you are about change pa rameters t hat affect alarm status.
To set the alarm relays:
Press the “Perform Alarm Relays Set-up”-button.
Press the “Exit”-button to exit the screen.
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Fig.3.3 The Alarm Relay Set-up screen
For information on connecting the alarm relay outputs to other equipment, see section
2.1.3.
Two alarm relay outputs are available in the monitor, one for low-limit alarms and one for high-limit alarms. Both are single-pole, normally-open relay contacts, which are electrically isolated from the monitor. You can set six alarm levels; a low limit and a high limit for each of the measured gas concentrations. However, the appropriate relay will close if any one condition is met. More formally, all the low limits are logically ORed and all the high limits are logically ORed.
The Alarm LED on the front panel will light if one or both of the alarm relays has closed. This may not only be due to a measurement going out of the set alarm limits, but also during certain set-up and fault conditions, in which case both alarm relays will be activated.
Carbon Dioxide
In the Low Limit field, you specify a measured concentration of carbon dioxide below which the low-limit alarm is triggered. If the low limit alarm is enabled (ON), the rela y will close when triggered. When disabled (OFF), no action occurs.
In the High Limit field, you specify a measured concentration of carbon dioxide above which the high-limit alarm is triggered. If the high limit alarm is enabled (ON), t he re­lay will close when triggered. When disabled (OFF), no action occurs.
The high limit must always be larger than the low limit. The help bar gives you guid­ance.
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Oxygen
The same principles as setting the carbon dioxide limits apply.
Hydrocarbon
The same principles as setting the carbon dioxide limits apply.
Unit
This option determines the measurement units for the hydrocarbon. You can choose between volume % and mg/m3. When the latter i s selected, two more fields appear in which you must enter the normalisation pressure (kPa) and temperature (°C), which are used in the conversion to mg/m3 from %.
Carbon dioxide and oxygen are always measured as vo lume %. The concentration val­ues refer to a dry gas condition.
The Unit option on the 1313 Alarm Relay Set-up screen is independent of the Unit op­tion on the BZ6009 and 0-24mA Set-up screens.
3.3.3 Adjust Clock
When the Main Menu screen displayed, select Clo ck Adjustment from the Setup pull­down menu.
This option enables you to set the internal clock in the monitor to have the same time as the clock in the PC.
Press the “Synchronize Time”-button in order to set the time in the monitor.
The monitor’s time changes to match the hours and minutes shown on the PC’s clock. The seconds are set to zero regardless of when the time is set.
Press the “Exit”-button to exit the screen.
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Fig.3.4 The Clock Adjust screen
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Chapter 4
Calibration
December 2010
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4.1 Introduction
The monitor is gain calibrated for hydrocarbons (ref. methane), oxygen and carbon di­oxide before it is delivered. In order to ensure that the full accuracy of the measurement results is maintained, the monitor’s calibration should be checked once a month.
The software provides three calibration procedures:
Zero calibration
• Gain calibration for all three gases
• Interference calibration.
Note: LumaSense does not manufacture the gas mix tures required for the calibration.
Section 4.3 describes a gas mixture that can be used for the calibration.
4.2 Checking and Changing the Particle Filters
Particle Filter
Fig.4.2 The inside of the calibration inlet filter and filter paper
The particle filter is located on the front panel of the monitor. This enables you to change the filter while the monitor is still mounted in the rack.
To check and change the filter:
1. Locate the filter housing on the front panel (see Fig.4.2).
2. Turn the disc anticlockwise to loosen the finger screw and remove it to reveal
the filter.
3. Using some broad-blade tweezers, remove the “O”-ring holding the filter paper.
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If you are only checking the particle filter, ensure that the paper is not ripped or blocked by excessive dirt. If it is, remove the filter paper and install a new one.
4. Use the broad-blade tweezers to remove the filter paper.
5. Insert a new filter. Check that the “O”-ring is intact and re-insert until it sits
firm on the filter paper.
6. Locate the stub on the inner side of the finger screw (marked in Fig.4.2).
7. Position the stub so that it fits into one of the two notches set in the mounting
ring (marked ➋ and ➌ in Fig.4.2).
Note: the line across the calibration inlet nozzle must be positioned to match the source of the calibration gas. If your calibration gas is supplied via one of the inlets on a 1309, use the measurement position. If you will apply the calibration gas directly to the front panel of the 1313, select the calibration position (see Fig.4.3).
Fig.4.3 The calibration and measurement positions of the particle filter
4.3 Calibration Gases
To perform a full calibration two types of gas are required. One is an inert gas (zero gas), used for zero calibration, and the other is a special gas mixture containing known concentrations of Hydrocarbon and Carbon dioxide.
Zero Gas
The preferred gas to be used for zero calibration is Nitrogen.
An alternative zero gas is synthetic air. This contains no hydrocarbons, so will not in­terfere with the zero calibration process.
Ambient air can be used as the zero gas since the normal hydrocarbon content is suffi­ciently low and zero calibration of Carbon dioxide is not performed. Non-polluted out­door air contains approximately 1.5 ppm methane which is more than ten times lower than the detection level in the 1313.
950188e
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Calibration Ga s Mi xt ure
The gas mixture shown in Table 4.1 is a suggested mixture for calibrating the monitor. Some specific applications may require other mixtures or other gases. Such mixtures should be discussed with a LumaSense Technical Support representative before u se so that the calibration gas mixture can be defined to suit your needs.
When the calibration gas contains Carbon dioxide the gas must be humidified b y pass­ing it through a length of Nafion tubing. If the calibration gas does not contain Carbon dioxide (for example pure oxygen used to calibrate oxygen gain only) the gas does not need to be humidified, but there will be no effect on the calibration figure if it is.
Gas Concentration
Methane 1 %
Oxygen 0 %
Carbon
Dioxide
5 %
Nitrogen balance
Table 4.1 Suggested gas mixtures used to calibrate the monitor
4.4 Connecting the Calibration Gas
Warning! The analysis cell of the monitor contains highly sensitive microphones.
Never make a direct connection from the pressure valve on a gas cylinder. Alwa ys use a side-stream connection like the one shown in Fig.4.4.
If your calibration gas is supplied to a gas channel on a 1309 you must still use a side­stream connection.
A side-stream connection kit consisting of the necessary tubing and connectors is sup­plied with the 1313 monitor. Note that this kit contains a length of Nafion tubing. When the calibration procedure specifies that the gas be kept dry, you must use tubing not permeable to water vapour, for example PTFE tubing.
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4.5 Zero Calibration
Fig.4.4 Typical side-stream connection set-up used during calibration
For hydrocarbon measurements, there is always a small background signal measured in the measurement chamber even when no absorbing gas is present. In order to compen­sate for the magnitude of this signal, a zero calibration is made. To do this, the meas­urement cell is filled with an inert gas (zero gas), which does not absorb infra-red light . There will be a small output signal from the measurement cell in this condition. This provides a base signal which will be subtracted from measured signals to give actual hydrocarbon values.
Note: when a zero calibration is made, a gain calibration must be made afterwards since the zero calibration value is used in finding gain calibration values.
Doing a Zero Calibration
Assuming that the monitor and the PC are connected and the software is running (dis­playing the Main Menu), the zero calibration continues as follows:
950112_1313
Surplus flow
approx. 5 - 30 ml/min
UD 5037 Disposable NAFION tube
130 ml/min
Fermentation Monitor
1313
UD 5056
Calibration Gas Inlet
UD 5042
Cal. Gas
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1. Ensure that the monitor has been switched on for at least 30 minutes. Any resid-
ual hydrocarbons will have been thoroughly flushed out of the monitor and sampling tubes by this time.
2. When the Main Menu screen is displayed, select Start Calibration from the Cali-
bration pull-down menu.
The software makes a se lf-test to check that the communication ports are open and reports any errors it encounters. The calibration screen is then displayed (see Fig.4.5).
Fig.4.5 Calibration screen
3. When the zero gas comes via a 1309, enter the correct channel number in the
field.
4. Ensure that the zero-gas bottle is connected as described in section 4.4.
5. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
6. Press the start-button to start the zero calibration.
7. Zero Calibration Started is displayed in the Calibration status box.
8. Wait until Calibration done is displayed in the Calibration status box.
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The monitor is now ready to be gain-calibrated.
4.6 Gain Calibration
This process allows the monitor to be gain-calibrated for one or more of the three measurable gases. A calibration gas with known concentrations of hydrocarbon, oxy­gen and carbon dioxide is used as the calibration source (see section 4.3).
Sometimes you may only want to gain calibrate for one gas. To avoid the monitor from updating a calibration value during calibration you must type in the concentration val­ues shown in Table 4.2.
Gas
When
entered %
value is
Status
Oxygen 20.95 No O2 calibration
Carbon
Dioxide
0.00 No CO2 calibration
Hydrocarbon 0.00
No hydrocarbon calibration
Table 4.2 Concentration % to be entered when no gain calibration is required for a
particular gas
Assuming that the monitor and the PC are connected and the software is running (dis­playing the Main Menu), the gain calibration continues as follows:
If you have just zero calibrated the monitor, continue from step 5.
1. Ensure the monitor has been switched on for at least 30 minutes.
2. When the Main Menu screen is displayed, select Start Calibration from the Cali-
bration pull-down menu.
The software performs a self-test to check that the communication ports are open and report any errors encountered. The calibr at io n s cre en i s then displa yed (see Fig.4.5).
3. If the calibration gas comes via a 1309, enter the correct channel number in the
field.
4. Ensure that the field displays the hydrocarbon for which you are calibrat-
ing. If not, choose the field, and select the correct one from the displayed list.
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The list only has calibrat ion data for those hydrocarbons requested to be meas­ured when the monitor was ordered from LumaSense Technologies A/S.
5. Use to tick which of the O2, CO2, CHx gasses that you want to be cali-
brated.
6. Type in the correct concentrations for the ticked O2, CO2, CHx gasses.
The gas concentrat ions must be the same as that stated on the calibration gas bottle.
7. Repeat steps 6 and 7 until all the field entries match the correct concentrations.
8. Connect the calibration-gas bottle as described in section 4.4.
9. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
10. Press the start-button to start the gain calibration.
11. Gain Calibration started is displayed in the Calibration status box.
12. The total gain calibration process can take up to 20 minutes to complete. This is
because a number of c alibration measurements are mad e for each gas and the average calibratio n level determi ned. The progress of the cal ibrat ion process for each gas can be monitored in the Calibration status boxes.
13. Wait until gain calibration done is displayed under Calibration Results.
The monitor is now ready for making measurements.
4.7 Interference Calibration
The interference calibration process does a very comprehensive calibration of the measurement system t o all ow the int erference o f the sam pled gas es on ea ch other to be taken into account. Interference calibration is normally only done after the 1313 has been serviced. Inte rference calibration is not necessar y during normal operation of the monitor.
The interference calibration provides the monitor with data that enables it to take into account the effect of:
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Water vapour on Hydrocarbon measurement
Carbon dioxide on Water vapour measurement
Carbon dioxide on Hydrocarbon measurement
Warning: Due to the interaction of the gaseous components with each other, the inter­ference calibration procedure must be done in the correct order and with exactly the right calibration gases. Failure to do so will not give the right correction values needed to compensate for interference, and so all measurements on hydrocarbons and carbon dioxide will not be accurate.
Oxygen measurements are not affected by interference.
The normal gain calibration procedure should be done after an interference calibration has been successfully completed.
4.7.1 Interference Calibra tion Gases
Two calibration gas sources are required for interference calibration:
Pure dry nitrogen
– 6% carbon dioxide in pure dry nitrogen
You will also need a temperature controlled water-bath. This should be capable of keeping the water at a stable temperature of approximately 18°C and be able to humid­ify a gas bubbled through it.
The temperature of the water bath must al ways be well below the ambient room tem­perature (and that of the monitor). This is to avoid condensation in the tubing and in the monitor.
Unless these three items are availab le, a full interferen ce calibration shou ld not be at­tempted.
4.7.2 Interference Calibration Procedure
The calibration procedure has four stages, which must be done sequentially:
Zero calibration of hydrocarbon and water vapour
• Water vapour gain calibrat io n
Water vapour interference on hydrocarbons
Carbon dioxide interference on water vapour and hydrocarbons.
The last stage contains two parts. The second part must be done immediately following the first part.
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The 1313 Interference Gas Calibration screen contains access to these stages (see
Fig.4.6).
Fig.4.6 Interference Calibration screen
At the top of the screen there is a table showing the current meas ured values of Carbon dioxide, Oxygen, Hydrocarbon and Water vapour.
Below this is a table showing the composition of the gas required for each sta ge o f the calibration process.
To the left of this is a block listing the four stages.
Preparing for Interference C alibration
1. Prepare the water bath for use and allow it to reach its working temperature.
2. Change the particle filter and set the particle filter holder in the calibration posi-
tion (see section 4.2).
3. Ensure the monitor has been switched on for at least 30 minutes so that any
residual hydrocarbons have been thoroughly flushed out of the monitor.
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4. When the Main M enu screen is displayed, select Start Interference Calibration
from the Calibration pull-down menu.
The software performs a self-test to check that the communication ports are open and report any errors encountered. The interference calibration screen is then displayed.
The alarm LED will come on indicating that normal measurements cannot be made.
Zero calibration of hydrocarbon and w a ter va po ur
1. Connect a source of pure dry nitrogen to the front panel gas inlet on the 1313
using a side-stream connection composed of PTFE tubing.
Note: Nafion tubing must not be used.
2. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
3. Press the Start button in the box in order to start the calibration.
4. Calibration started is displayed in the status box.
5. Wait for up to 64 seconds for the calibration to complete.
You can now move on to the next stage.
Water Vapour Gain Calibration
1. Ensure the water-bath has reached its working temperature.
2. Connect a source of pure dry nitrogen to the input of the water bath.
Connect the output of the water bath to the front panel gas inlet on the 1313 using a side-stream connection made of PTFE tubing (see Fig.4.7).
Important: Nafion tubing must not be used.
3. Find the temperature of the water.
4. Type the water temperature into the left field in the box.
5. Measure the ambient barometric pressure.
6. Type the barometric pressure into the right field in the box.
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The temperature and barometric pressure are used by the 1313 to calculate the absolute humidity of the incoming nitrogen.
7. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
8. Press the Start button in the box in order to start the calibration.
9. Calibration started is displayed in the status box.
10. Wait for up to 6 minutes for the calibration to complete.
You can now move on to the next stage.
Fig.4.7 Side-stream connection set-up used during water vapour gain calibration
Water Vapour Interfer ence on Hy drocarbons
Steps 1 to 3 are the same as the previous stage.
1. Ensure the water-bath has reached its working temperature.
2. Connect a source of pure dry nitrogen to the input of the water bath using a
side-stream connection.
950176_1313e
Surplus flow
approx. 5 - 30 ml/min
PTFE
Tube
130 ml/min
Water
at 18 C
Fermentation Monitor
1313
Calibration Gas Inlet
UD 5042
Cal. Gas
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3. Connect the output of the water bath directly to the front panel gas inlet on the
1313 using PTFE tubing.
4. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
5. Press the Start button in the box in order to start the calibration.
6. Calibration started is displayed in the status box.
7. Wait for the calibration to complete.
You can now move on to the next stage.
Carbon Dioxide Interference on Water Vapour and Hydrocarbons
1. Connect a source of pure dry nitrogen to the front panel gas inlet on the 1313
using a side-stream connection composed of Nafion tubing.
This is to humidify the nitrogen to the ambient humidity.
2. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
3. Press the 1st. Start button in the box in order to start the
calibration.
4. Calibration started is displayed in the status box.
5. Wait for the calibration to complete.
6. Connect a source of 4–6 % carbon dioxide in nitrogen to the front panel gas
inlet on the 1313 using a side-stream connection composed of Nafion tubing.
This is to humidify the gas mixture to the ambient humidity.
7. Type in the actual Carbon dioxide concentration read from the calibration
certificate on the gas bottle into the Calibration Gas Concentration field.
8. Open the gas valve and adjust the flow.
9. Press the 2nd. Start button in the box in order to start the
calibration.
10. Calibration started is displayed in the status box.
11. Wait for the calibration to complete.
The interference calibration is now complete.
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4.7.3 Modified Inte rference Calibration P rocedure
If a temperature cont rol l e d wat er b at h i s n ot avai la b le you can om i t W at er Vap our Gain Calibration if you are confident the H2O Gain is within limits. If you omit this proce­dure, the Water Vapour Interference on Hydrocarbons procedure needs to be modified:
1. Perform the zero calibration of H ydrocarbon and Water vapour, as described in
section 4.7.2.
2. Ignore the Water Vapour Gain Calibration
3. Connect a source of pure dry nitrogen to the front panel gas inlet on the 1313
using a side-stream connection composed of Nafion tubing.
This is to humidify the nitrogen to the ambient humidity.
4. Open the gas valve and adjust the flow so that a small surplus flow exists in the
side-stream tube.
5. Press the Start button in the box in order to start the calibration.
6. Calibration started is displayed in the status box.
7. Wait for the calibration to complete.
8. Perform the Carbon Dioxide Interference Calibration on Water Vapour and
Hydrocarbons (see section 4.7.2).
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Chapter 5
Operation
December 2010
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5.1 About this Chapter
This chapter guides you through the Measurement option available on the Main Menu Screen. In normal operation of the software, this will be the most frequently used screen.
5.2 Measurement Monitoring
Before starting a measurement, ensure that the system is configured as you require. System configuration is described in Chapter 3.
Starting to Monitor a Measurement
When t he Main Menu screen displayed, select Start Measur ement from the Measure­ment pull-down menu.
The software runs a series of self-tests to check that the lines of communication are open.
If there are any errors, these are reported on an information screen.
If you have set Data Recording to ON and a data file already exists from this software session, you will be given the chance to either append or erase the data at this point.
The graphical measurement screen now appears (see Fig.5.1).
Stopping Monitoring a Measurement
Select Stop M easurement from the Measurement pull-down menu in order to stop the measurement display. This returns you to the Main Menu.
Note: Stopping monitoring will not stop the 1313 monitor from measuring. It will con­tinue to output on the analogue interface until interrupted by either power down, an er­ror occurring or you select a hardware configuration mode, such as calibration.
5.2.1 The Measuring Screen Layout
Fig.5.1 shows a typical meas urem ent sc r een. T h e gas cu rv es o n t his s creen show the re-
sult of gently breathing into the sample-line attached t o the 1313 . The dat a rate was set to 1.
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Fig.5.1 An example of a measurement screen
The various parts are described below:
The Gas Ch. No. pull-down allows you to select the recent results from another gas channel if multipoint sampling is enabled. Only channels specified in the Repeated Sampling Sequence and that have a measurement value to display will be accepted.
A set of measurement sc reens captured during a multipoint sampling measurement are shown below. The sampling sequ ence was “1 3”, the sampling time was set for 30 sec­onds and flushing time 15 seconds.
Channel 1 had a source of exhaled air (Fig.5.2). Channel 3 was open to t he ambi ent air (Fig.5.3).
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Fig.5.2 The measurement screen associated with Channel 1 (exhaled air)
When multipoint sampling is enabled, 1313 channel displays a sequential mix of all the recent measurement s from all the channels i n the sequen ce. This can b e clearl y seen in
Fig.5.4. 1313 Channel can be considered to b e the gas-line connecting the 1309 to the
1313, through which all samples must pass. The screen update rate of 13 13 channel is set by the Data Rate and not by the Sampling Rate (see section 3.2.3 and section 3.2.4). In this case the Data R ate was set to 1 second. W hen multipoint sampling is disabled, only the 1313 channel will be displayed.
The Temp No. pull-down allows you to select which 1309 temperature sensor reading is displayed in the box at the bottom of the screen. You can enter numbers from 1 to 18, but you will only get a meaningful display from those temperature sensors actually connected. This option is not available when multipoint sampling is disabled.
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The Press No. pull-down allows you to select which 1309 pressure sensor reading is displayed in the box at the bottom of the screen. You can enter numbers from 1 to 3, but you will only get a meaningful display if the 1309 is connected. This option is not available when multipoint sampling is disabled.
Fig.5.3 The measurement screen associated with Channel 3 (ambient air)
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Fig.5.4 An example of 1313 channel during multipoint sampling
Graph Display
This occupies the mai n area of the screen. On it are dis played curves giving th e current and recent history values of the measured concentrations of the sampled gases.
The graph is always divided into a grid. The x-direction corresponds to time and the y­direction gas concentration.
During measurement, the measurement dat a for each gas is plotted from left to right, moving at a speed deter mined by the data rate or sampling period set in the BZ6009 Set-up screen (see se ction 3.2.3 and section 3.2.4 ). When the measurements hav e been plotted all the way to the right the old measurements will shift out to the left of the graph.
The CO2, O2 and CHx gasses is plotted with the colours blue, red and green respec­tively.
Y-axis Labelling
The y-axis labelling always appears as three columns at the right of the screen. The carbon dioxide scale is presented first, followed by oxygen and finally hydrocarbon.
The maximum and minimum values shown on each scale correspond t o the values set in the BZ6009 Set-up screen. Intermediate values are dete rmined by dividing the dif­ference between the maximum and minimum values by ten.
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Current Gas Values
These are displayed in boxes immediately under the graph. The displayed value will be updated when new samples are added to the gas curves.
Further Infor mation
At the bottom of the screen, the information bar has several fields giving you a limited overview of the current state of the system.
Time/division shows the scaling for the x-axis .
Data Recording: tells you whether Data Recording is enabled or not.
Mode: indicates what state the PC running the BZ 6009 software is in. It will be set to Remote when the remote control is in operation, otherwise it will show Auto.
Averaging: indicates whether averaging is on or off. When multipoint sampling is on, averaging will be OFF during the flushing period and ON during the averaging period.
Active Channel: shows which 1309 channel are currently connected to the 1313.
5.3 Import Data to Excel
Guidance for importing the Data File to other programs
The BZ 6009 data fil es are s aved as “comma separated” text files. Th e deci mal separa ­tor is “.”. Text delimiters are not used.
The data files will be created by default in the folder: C:\BZ6009 Data. The naming of the data files and the folder is decribed in section 3.2.2.
When importing the data file into other programs, in order to manipulate the data or, for example, for producing a report, the import options should be set to read comma­delimited files with a decimal separator of “.” and a time separ ator of “:”. Below is an example of importing a data file into Excel:
1. Ensure that the Windows number and time formats are correct.
Number format: 1000 separator = none
decimal separator = ‘.’
Time format: Separator = ‘:’
These can be checked and changed in the “Intern ational” Window, which is an option of the Program Manager -Main -Control Panel Window.
2. Start an EXCEL session.
3. Click on File and choose Open.
4. Type in the name of the data file to be imported.
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5. Select Text.
6. Set the column delimiter to Comma.
Fig.5.5 shows an example of an imported data file into EXCEL. The data shows the
first few measurements made during a multipoint sampling session.
Fig.5.5 Example of a data file imported into Microsoft Excel
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Chapter 6
1309 Multipoint Sampler
December 2010
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6.1 About this Chapter
This Chapter describes how to integrate up to three 1309 Multipoint Sampler units in a 1313/BZ 6009 system.
For detailed specifications of the 1309 please refer to its own User Manual.
Configuring, calibrating and operating instructions of the 1313/1309 combination are found in Chapter 3, Chapter 4 and Chapter 5.
6.2 System Description
The 1309 Multipoint Sampler allows you to sample gases from 12 different locations using the 1313 as the measuring device. Also included in the 1309 is a pressure trans­ducer and six temperature probe interfaces. The layout of a typical system is shown in
Fig.6.1.
Fig.6.1 Typical 1313/1309 system set-up
The most important point to note about the set-up is that the 1309 is controlled with an IEEE–488 interface from the PC. This means an IEEE–488 interface card needs to be installed into the PC (see section 6.3). This card is avai lable from LumaSense, order number WQ 0625.
The BZ 6009 software can control up to three 1309’s by connecting the IEEE–488 links and sample outputs in parallel. This allows up to 36 independent sample points to be monitored. The measurement time allocated for each sample point is user-definable in the software. Sample points need not be measured sequentially, and the same sample point can be “visited” more than once in a given sequence. This allows you to monitor critical points more frequently.
Sampled gases are drawn through the gas lines from the sample points by the pump in the 1313. Solenoid valves in the 1309 determine which of the twelve sample lines is
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connected to the sample gas outlet. The control of these solenoid valves is done by the BZ 6009 software running on the PC. Thus, unlike a stand-alone 1313, a multipoint sampling system must have the computer connected and running the software.
Up to six temperature sensors can be connected to the 1309. They deliver the tempera­ture information to the PC via the IEEE–488 link.
Also included in the 1309 is a pressur e senso r that m easures the barom etric p ressure in the environment immediately surrounding the 1309. The measured pressure is sent to the PC via the IEEE–488 link.
To ensure that gas samples do not interfere with each other during measurement, the software provides a flushing function. For each gas line, measurement is commenced after a user-defined period. The period is set so that there is enough time to expel all traces of the previous sample from the sampling lines, the 1309 and the measurement chambers before measurement is done.
6.3 Setting up the IEEE – 488 Interface
To communicate with a 1309 the PC running the BZ 6009 software must have a National Instruments IEEE–488 interface card and associated software installed in it.
Installing the Card and Software
Installation and testing of the hardware and software required to implement an IEEE– 488 interface is covered by the manuals delivered by National Instruments. Follow the instructions contained in these manuals explicitly to ensure the card and software is correctly installed. Failure to do so may result in an unstable interface.
6.4 Setting up the 1309 IEEE – 488 Address
After the installation IEEE–488 interface hardware and software, the IEEE–488 address of each 1309 in the system must be set before communication with the PC can occur. The address is set using the eight DIP switches located on the back panel of the 1309. The decimal address of the instrument is expressed as a binary number, the MSD (Most significant DIP switch) being to the left looking onto the back panel. Table 6.1 will guide you.
Decimal
Address
DIP switch setting
(looking onto rear)
1309 multipoint
sampler
13 0 0 0 0 1 1 0 1 1 14 0 0 0 0 1 1 1 0 2 15 0 0 0 0 1 1 1 1 3
Table 6.1 Setting the 1309 address
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6.5 Connecting a 1309 to a P C
A 1309 is connected to a PC using an IEEE–488 cable (AO 0265). To avoid data er­rors, this cable must conform to the specifications laid down in the IEEE–488 standard, particularly with regard to length, connector type and “daisy-chaining”. LumaSense can supply the correct cables.
Caution: To avoid permanently damaging the delicate electronics in a 1309 or the PC, you must ensure that all IEEE–488 instruments are switched off before connecting or disconnecting the interface cables.
6.6 Connecting a 1309 to a 1313
The gas to be sampled is drawn from the 1309 to the 1313 via a sample li ne. Various types of sample lines are available depending on the individual applications Fig.6.2 shows a typical sample line configuration.
The sample line tubing between a 1309 and a 1313 should be kept as short as possible to assist response times. If you are unsure about the type of sample line for your appli­cation, contact a LumaSense Technical Support representative for advice before in­stalling the system.
You must include an in-line filter in the sample line. The LumaSense accessory UD 5057 is recommended.
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Fig.6.2 A typical sample line configuration
The Output to Analyser nozzle is located on the back plate of the 1309. The standard nozzle installed accepts PTFE tubing with a 4 mm external diameter and an internal diameter of 2 mm. The standard nozzles can be removed to enable other adapters or connectors to be fitted. When the nozzle is removed, the gas inlet has an 1/8th inch British Standard Parallel (BSP) thread. It is important that any other connectors used here have exactly the same thread.
When only one 1309 is used in the system, the sample line should be directly connected to the 1313 Gas Inlet. If more than one is being used, the lines from the Output to Analyser nozzles should be summed by T-pieces before being fed to the 1313. Solenoid operated three-wa y valves (under the control of the BZ6009 software) ensure that the correct 1309 is connected to the 1313 during measurement and calibration.
950108e
1313 Fermentation Monitor
1309 Multipoint Sampler
Sampling Inlet Channels
“Outlet to Analyser”
65 mm AF 0614
DS 2306 Inlet Filter
UD 5037 Nafion Sampling Tube
UD 5046
UD 5046
(Nafion)
1/5 of UA 1166
PE-tube cut off here
20 mm AF 0614
20 mm AF 0614
20 mm AF 0614
Surplus flow to scavenging channel
AF 0614
AF 0614
UD 5001
Main Flow from
pressurized sampling site
One of 12 channels
Gas Inlet
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Note: When a 1309 is first powered up, all the solenoid valves are closed. This will ap­pear to be an occlusion to the 1313, giving a resultant error message. Therefore, ignore the first occlusion error message immediately after power up in a combined 1309/1313 system.
6.7 Connecting Temperature Sensors
Up to six temperature sensors can be connected to a 1309. Please refer to the 1309 User Manual for more information.
6.8 Mains Supply and Fuses
Ensure that the mains voltage setting and fuse rating in the 1309 are correctly set before applying power. For more details, see the 1309 User Manual.
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Chapter 7
Process Computer Interface
December 2010
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7.1 About This Chapter
This chapter is for users of the 1313 and BZ 6009 software who want to connect the monitoring system into a larger system controlled by a process control computer.
Because such an appli cati on is very special ised t he i nform ation in th is chap ter is n eces­sarily technical. The l eve l at which the p roces s co mp uter in terface (PC I) i s descri bed is quite deep. You will find that a lot of knowledge is assumed in advance about the workings of computer interfaces.
Note: In examples given to explain data used to control the PCI spaces have been in­serted to aid reading clarity. In reality communication is by consecutive non-spaced characters.
7.2 PCI System Description
The process control interface allows you direct access to the control and data registers within the 1313 monitor and the BZ 6009 software running on the PC. Communication from the process control computer to the PC is via an RS – 232 serial link. The PC, therefore, needs two COM ports, one for the PCI and one for the 1313, together with an IEEE – 488 interface if multipoint sampling is implemented.
The process control interface allows you to:
1. Access information about;
the present channel number the current gas measurement values from the 1313 the previous gas measurement values from the 1313 updated temperature and barometric pressure values from the 1309.
2. Select between auto and remote mode.
In Auto mode the sampling sequence is controlled by the BZ 6009 software. In Remote mode the process control computer controls the sampling sequence
and starts/stops averaging of measurement data.
A typical set-up of a 1313 used with a PC, a 1309 and a process control computer is shown in Fig.7.1.
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Fig.7.1 Typical process control set-up
7.3 Setting up the Process Control Computer’s RS – 232 serial interface
The communication parameters for the PCI RS – 232 serial link are as follows:
8 data bits
1 stop bit
9600 baud
No parity
Hardwire handshake, DSR required
The BZ 6009 software requires both CTS and DSR to be true before communication can start. If using LumaSense cables WL 0945 or WL 0946, CTS is hardwired to the PC’s RTS line and so will always be true. The DSR line of the PC is wired to DTR at the process computer end and is used as a handshake (flow control). Check that your process computer asserts DTR when ready to communicate.
You should also check that the correct COM port for the remote link is specified on the BZ 6009 Set-up screen.
7.4 Process Computer Interface (PCI) Protocols
Communication over the PCI is possible using either of the two protocols:
• COMLI (default)
• OPTOMUX
Commands are always initiated by the process control computer and acknowledged by the PC. The PC will send data back to the process control computer if the command
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was of the data retr ieval type. The process control computer can also send data to the PC and 1313, typically for sampling sequence purposes.
You should imagine that at the remote end (PC/1313) there exists a set of registers whose contents contain either control or measurement data. Each register can be ad­dressed, and depending upon the data type, can be read from, written to or both. The operation to be performed on each register is controlled by a command. These com­mands and registers are described in detail in section 7.6 for COMLI and section 7.7 for OPTOMUX.
7.5 Representation of Values in Registers
For write registers, 1000h always corresponds to the full scale value and 0000h corre­sponds to the bottom scale value.
For read registers, 2000h corresponds to the full scale value and 1000h corresponds to the bottom scale value (except for the registers mentioned in the table below).
If a measurement exceed s the full scale value, then the value read wi ll be larger than 2000h. For example, CO2 measurements are possible up to 13%, giving a read value of 24CDh.
Register Addresses
COMLI
OPTOMUX (base address)
Description
1260h 12h register no. 7 O2 bottom scale 1270h 12h register no. 8 O2 full scale 1280h 12h register no. 9 CHX full scale
For Carbon dioxide the full scale value is 10.0% vol. and the bottom scale value is zero.
For Oxygen the ful l scale and bottom s cale values are user d efinable via two re gisters in the 1313 General Register Group (see section 7.6 for COMLI and section 7.7 for OPTOMUX). The parameters should be scaled so that 0000h corresponds to 0 vol% O2 and 1000h corresponds to 100 vol% O2.
For Hydrocarbons the full scale val ue is user defin able via a register i n the 1313 Gen­eral Register Group. The parameter should be scaled so that 0000h corresponds to 0 vol% CHx and 1000h corresponds to 10 vol% CHx.
For temperature th e full s cale value is 100.0°C and the bottom scale value is zero. The 1309 temperature m easurement range i s from – 20°C to 100°C. When the temperature is negative, a value smaller than 1000h will be read.
For barometric pressure the full scale value is 200 kPa and the bottom scale value is zero.
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To convert hex data to a gas, temperature or pressure value use the formula:
value = ((hex value/4096)–1)(full scale–bottom scale)+bottom scale
Example 1
If 1A6Dh (6765 decimal) is read from a CO2 register, the value will be:
((6765/4096)–1)(10–0) = 6.516 vol%
Example 2
If 0E54h (3668 decimal) is read from a temperature register, the value will be:
((3668/4096)–1)(100–0) = –10.449°C
Example 3
If the process computer has set up the O2 bottom scale to be 16.992 vol% (≡2B8h) and
the full scale to be 25.000 vol% (≡400h), O
2
values wil l be scaled b y the BZ6009 soft­ware such that 1000h corresponds to 16.992 vol% and 2000h corresponds to 25.000 vol%
If 1356h (4950 decimal) is read from an O2 register, the value will be:
((4950/4096)-1)(25.000–16.992)+16.992 = 18.662 vol%
Initial Values
The analogue registers are all initiated with the dummy value 0000h. If a register is read before the data has been updated the following values will appear:
Temperature: –100°C Pressure: –200 kPa O
2
vol%: –25 vol% (with default scaling)
CO
2
vol%: –10 vol%
CHx vol%: –1.25 vol% (with default scaling)
7.6 COMLI Communication parameters
7.6.1 Register Description
The COMLI protocol has been implemented following the guidelines dictated by the “COMLI Systembeskrivning”, March 1997*. The specifications for the implemented COMLI protocol are:
Message type 0 is supported. Transfer of 1 or more 16 bit registers.
Message type 1 is supported. Acknowledge.
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Message type 2 is supported. Request for 1 or more 16 bit registers.
Message type 3 is supported. Transfer of 1 bit.
Message type 4 is supported. Request for 1 bit.
Data format is binary (ASCII format is not supported).
Writing a bit to a register to activate a function, activates the function regardless
of the previous state of the bit in the register.
Reading a bit from a register does not clear “any contents changed since last
read status” of the register.
Writing to an unused address is allowed but has no effect.
Reading from an unused address is allowed and returns 0000h.
The information on the following pages details the address and function of each of the different registers.
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7.6.2 The Interface Registers
Sampling Chan nel Control Register
This is a single 16 bit read/write register. The register can only be written to when BZ 6009 is set to remote mode.
Register Address
Function
1000h LSB
Binary code for the 1309 sampling channel Valid numbers are from 1 to 36
1001h 1002h 1003h 1004h 1005h
MSB
1006h–100Eh Not used
100Fh When set, will start averaging the gas data. To stop averaging, clear the bit.
1313 Control Register
This is a single 16 bit read/write register. It can be addressed in both aut o and remote modes.
Register Address
Type Description
1100h write Set true to enter BZ 6009 to auto mode, false for remote
1101h-1102h Not used
1103h read True if an error occurred in the 1313 1104h read True if an error occurred in a 1309 1105h read True if the BZ 6009 disabled remote mode
1106h-110Fh Not used
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1313 General R egister Group
This is a group of 16 read or write registers each 16 bits wide.
Register Address
Type Description
1200h read Averaged CO2 measurement 1210h read Averaged O2 measurement
1220h-1240h Not used
1250h read Averaged CHx measurement 1260h write O2 bottom scale 1270h write O2 full scale 1280h write CHX full scale
1290h –12F0h
Not used
If you read registers 1200, 1210, and 1250 while averaging is stopped, you will read 1 second values. If averaging is started, you will read the instantaneous cumulative aver­age of the measurements made since averaging was started.
The following regis ters a re defined so that t he valu e read from a regist er is th e same as the last value written to that register.
Register Address
Description
Register
value at
0% conc.
Register value at max.
conc.
1260h O2 bottom scale 0000h 1000h (100%) 1270h O2 full scale 0000h 1000h (100%) 1280h CHx full scale 0000h 1000h (10%)
The O2 scaling values (registers 1260 and 1270) are used to define the input values used in the Oxygen Measurement Register Groups. Unless specified, the full scale value will automatically be set to 25% and the bottom scale 0% upon power up. If these values are not suitable for your application, they must be changed via this register group.
The CHx scaling value (register 1280) is used to define the input value used in the Hydrocarbon Measurement Register Groups. Unless specified, the full scale value will automatically be set to 1.25% upon power up. If this value is not suitable for your ap­plication, it must be changed via this register group.
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Oxygen Measurement Register Groups
Register Address range 0100h to 01F0h apply to the 1309 no. 1 (channels 1 to 12) Register Address range 0500h to 05F0h apply to the 1309 no. 2 (channels 13 to 24) Register Address range 0900h to 09F0h apply to the 1309 no. 3 (channels 25 to 36)
For example:
0100h
O2 value measured on 1309 gas channel 1
0500h
O2 value measured on 1309 gas channel (1+12=) 13
0900h
O2 value measured on 1309 gas channel (1+24=) 25
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode.
Register Address
Description
0100h O2 value measured on 1309 gas channel 1 0110h O2 value measured on 1309 gas channel 2 0120h O2 value measured on 1309 gas channel 3 0130h O2 value measured on 1309 gas channel 4 0140h O2 value measured on 1309 gas channel 5 0150h O2 value measured on 1309 gas channel 6 0160h O2 value measured on 1309 gas channel 7 0170h O2 value measured on 1309 gas channel 8 0180h O2 value measured on 1309 gas channel 9
0190h O2 value measured on 1309 gas channel 10 01A0h O2 value measured on 1309 gas channel 11 01B0h O2 value measured on 1309 gas channel 12 01C0h Not used 01D0h Not used 01E0h Raw 1 second O2 measurement value from the 1313
01F0h 16-bit Gas channel status register
The 16-bit gas channel status register uses only the least significant 12 bits. If a bit is true (logic 1) this indicates that the corresponding channel’s O2 value has been updated since the register group was last read. The LSB corresponds to the lowes t gas channel number.
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Carbon Dioxide M ea sur ement Register Groups
Register Address range 0200h to 02F0h apply to the 1309 no. 1 (channels 1 to 12) Register Address range 0600h to 06F0h apply to the 1309 no. 2 (channels 13 to 24) Register Address range 0A00h to 0AF0h apply to the 1309 no. 3 (channels 25 to 36)
For example:
0200h
CO2 value measured on 1309 gas channel 1
0600h
CO2 value measured on 1309 gas channel (1+12=) 13
0A00h
CO2 value measured on 1309 gas channel (1+24=) 25
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode.
Register Address
Description
0200h CO2 value measured on 1309 gas channel 1 0210h CO2 value measured on 1309 gas channel 2 0220h CO2 value measured on 1309 gas channel 3 0230h CO2 value measured on 1309 gas channel 4 0240h CO2 value measured on 1309 gas channel 5 0250h CO2 value measured on 1309 gas channel 6 0260h CO2 value measured on 1309 gas channel 7 0270h CO2 value measured on 1309 gas channel 8 0280h CO2 value measured on 1309 gas channel 9 0290h CO2 value measured on 1309 gas channel 10
02A0h CO2 value measured on 1309 gas channel 11
02B0h CO2 value measured on 1309 gas channel 12 02C0h Not used 02D0h Not used
02E0h Raw 1 second CO2 measurement value from the 1313
02F0h 16-bit Gas channel status register
The 16-bit gas channel status register uses only the least significant 12 bits. If a bit is true (logic 1) this indicates that the corresponding channel’s CO
2
value has been up- dated since the register group was last read. The LSB corresponds to the lowest gas channel number.
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Hydrocarbon Measurem ent Register G roups
Register Address range 0300h to 03F0h apply to the 1309 no. 1 (channels 1 to 12) Register Address range 0700h to 07F0h apply to the 1309 no. 2 (channels 13 to 24) Register Address range 0B00h to 0BF0h apply to the 1309 no. 3 (channels 25 to 36)
For example:
0300h
CHX value measured on 1309 gas channel 1
0700h
CHX value measured on 1309 gas channel (1+12=) 13
0B00h
CHX value measured on 1309 gas channel (1+24=) 25
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode.
Register
Address
Description
0300h CHx value measured on 1309 gas channel 1 0310h CHx value measured on 1309 gas channel 2 0320h CHx value measured on 1309 gas channel 3 0330h CHx value measured on 1309 gas channel 4 0340h CHx value measured on 1309 gas channel 5 0350h CHx value measured on 1309 gas channel 6 0360h CHx value measured on 1309 gas channel 7 0370h CHx value measured on 1309 gas channel 8 0380h CHx value measured on 1309 gas channel 9
0390h CHx value measured on 1309 gas channel 10 03A0h CHx value measured on 1309 gas channel 11 03B0h CHx value measured on 1309 gas channel 12 03C0h Not used 03D0h Not used
03E0h Raw 1 second CHx measurement value from the 1313
03F0h 16-bit Gas channel status register
The 16-bit gas channel status register uses only the least significant 12 bits. If a bit is true (logic 1) this indicates that the corresponding channel’s CHx value has been up-
dated since the register group was last read. The LSB corresponds to the lowest gas channel number.
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1309 Temperature and Pressure Register Groups
Register Address range 0400h to 04F0h apply to the 1309 no. 1 (temperature channels 1 to 6 and barometric pressure number 1)
Register Address range 0800h to 08F0h apply to the 1309 no. 2 (temperature channels 7 to 12 and barometric pressure number 2)
Register Address range 0C00h to 0CF0h apply to the 1309 no. 3 (temperature channels 13 to 18 and barometric pressure number 3)
For example:
0400h
1309 temperature channel number 1 measurement
0800h
1309 temperature channel number (1+6=) 7 measurement
0C00h
1309 temperature channel number (1+12=) 13 measurement
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode.
Register
No.
Description
0400h 1309 temperature channel number 1 measurement 0410h 1309 temperature channel number 2 measurement 0420h 1309 temperature channel number 3 measurement 0430h 1309 temperature channel number 4 measurement 0440h 1309 temperature channel number 5 measurement 0450h 1309 temperature channel number 6 measurement 0460h Barometric pressure number 1 measurement
0470h–
04F0h
Not used
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Sampling Sequence Register Group
This group contains three registers, each 16 bits wide, that enable read and write facili­ties for the Repeated Sampling Sequence in Auto Mode.
Each register corresponds to a 1309 Multipoint Sampler. In each register, the 12 least significant bits are used to represent the associated 12 channels, where the LSB corre­sponds to the lowest channel.
A set bit (i.e. 1) means that the corresponding channel is part of the Sampling Se­quence. A cleared bit (0) means that the channel is not part of the Sampling Sequence.
Register Address
Description
1300h Channels 1 to 12 1310h Channels 13 to 24 1320h Channels 25 to 36
A Sampling Sequence defined from the interface becomes active when the previous Sampling Sequence has finished the current measurement cycle.
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Combined Register Group
This group contains eight registers, each 16 bits wide. These are used to present com­mon information in a single register group when in Remote Mode. All information in these registers is read-only.
Register Address
Description Explanation
1330h
Sampling Channel
Control Register
This is a read-only version of the Sampling Channel Control Register at address 1000h
1340h
Control Register
This is a read-only version of the Control Register at address 1100h
1350h
Averaged CO2
Measurement Reg.
This is a copy of the register at 1200h (General Regis­ter Group, Register 1)
1360h
Averaged O2
Measurement Reg.
This is a copy of the register at 1210h (General Regis­ter Group, Register 2)
1370h
Averaged CHX
Measurement Reg.
This is a copy of the register at 1250h (General Regis­ter Group, Register 6)
1380h
Average Reg. interval
in seconds
This register returns an integer. If Average is OFF,
then the register returns 1. If Average is ON, then the register returns the number of seconds elapsed since averaging started.
1390h Reserved
These registers are reserved for future use and return 0000h
13A0h Reserved
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Gas Channel S tatus Acknowledge Register Group
This group has nine registers, each is 16 bits wide. They provide the status of Ca rbon dioxide, Oxygen and Hydrocarbons in each of the 1309 Multipoint Samplers.
Register Address
Description
13B0h Gas Channel Status Acknowledge Register for O2 in
1309 number 1
13C0h Gas Channel Status Acknowledge Register for CO2 in 13D0h Gas Channel Status Acknowledge Register for CHx in
13E0h Gas Channel Status Acknowledge Register for O2 in
1309 number 2
13F0h Gas Channel Status Acknowledge Register for CO2 in 1400h Gas Channel Status Acknowledge Register for CHx in 1410h Gas Channel Status Acknowledge Register for O2 in
1309 number 3
1420h Gas Channel Status Acknowledge Register for CO2 in 1430h Gas Channel Status Acknowledge Register for CHx in
In each register, the 12 least significant bits are used to represent the 12 channels in the Multipoint Samplers, where the least significant bit represents the lowest channel num­ber. Bit 15 corresponds to the internal gas channel 0. A set bit (1) means that a new measurement for the corresponding gas is completed on the corresponding channel.
Note that the bits in these registers are not cleared (0) when the corresponding concen­trations are read from the Measurement Registers.
To clear the bits in these registers, a bit mask containing set bits (1) needs to be written to the register.
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Mirrored Re gisters Group
This group has 20 registers. This provides all read/write registers with two different ad­dresses, allowing separate addresses for reading and writing the same registers.
Register Address
Description
Mirror
ed
Addres
s
2000h Sampling Channel Control Register 1000h 2010h Control Register 1100h 2050h General Register Group, O2 bottom scale 1260h 2060h General Register Group, O2 full scale 1270h 2070h General Register Group, CHx full scale 1280h 2080h Sampling Sequence Register Group, Channels 1 to 12 1300h
2090h Sampling Sequence Register Group, Channels 13 to 24 1310h 20A0h Sampling Sequence Register Group, Channels 25 to 36 1320h 20B0h Gas Channel Status Acknowledge Register for O2 in 1309 no.1 13B0h 20C0h Gas Channel Status Acknowledge Register for CO2 in 1309 no.1 13C0h 20D0h Gas Channel Status Acknowledge Register for CHx in 1309 no.1 13D0h 20E0h Gas Channel Status Acknowledge Register for O2 in 1309 no.2 13E0h
20F0h Gas Channel Status Acknowledge Register for CO2 in 1309 no.2 13F0h
2100h Gas Channel Status Acknowledge Register for CHx in 1309 no.2 1400h
2110h Gas Channel Status Acknowledge Register for O2 in 1309 no.3 1410h
2120h Gas Channel Status Acknowledge Register for CO2 in 1309 no.3 1420h
2130h Gas Channel Status Acknowledge Register for CHx in 1309 no.3 1430h
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7.7 OPTOMUX Communication parameters
7.7.1 Register Description
The information on the following pages details the address and function of each of the different registers.
Each register is 16 bits wide. When a group of registers contain similar data, they are grouped together and given a base address. Individual registers in a group are addressed by using an offset from the base address. Such a group is called an Analogue Block, as the data contained in the registers are numerical representations of analogue values.
A Digital Block is only one register. In some cases two addresses are given for the same digital block. It does not matter which address you choose, they both point to the same register.
7.7.2 The Interface Registers
Sampling Channel Control Register
Type of register: Digital Block Address: 10h or 20h
This is a single 16 bit register. The bits in the register can be set or reset using the J, K or L commands, and then only when the BZ 6009 is set to remote mode. The register can be read with the M command.
Bit Number Function
1
LSB
Binary code for the 1309 sampling channel Valid numbers are from 1 to 36 MSB
2 3 4 5 6
MSB
7-15 Not used
16 When set, will start averaging the gas data. To stop averaging, clear the bit
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1313 Control Register
Type of register: Digital Block Address: 11h or 21h
This is a single 16 bit register. It can be addressed in both auto and remote modes. The write bits in the register can be set o r reset us ing the J , K or L command s. The read bits in the register can be read with the M command.
Bit
Number
Type Function
1 write Set true to enter BZ 6009 to auto mode, false for remote
2-3 Not used
4 read True if an error occurred in the 1313 5 read True if an error occurred in a 1309 6 read True if the BZ 6009 disabled remote mode
7-16 Not used
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1313 General R egister Group
Type of register: Analogue Block Base Address: 12h
This is a group of 16 registers each 16 bits wide. The write registers in the group can be written to with the J or S commands. The read registers in the group can be read with the L command.
Register
No.
Type Function
1 read Averaged CO2 measurement 2 read Averaged O2 measurement
3-5 Not used
6 read Averaged CHX measurement 7 write O2 bottom scale 8 write O2 full scale 9 write CHx full scale
10 –16
Not used
If you read registers 1 2, and 6 while averaging is stopped, you will read 1 second val­ues. If averaging is started, you will read the instantaneous cumulative average of the measurements made since averaging was started.
The O2 scaling values (registers 7 and 8) are used to define the input values used in the register groups at base addresses 01h, 05h and 09h. Unless specified, the full scale value will automatically be set to 25% and the bottom scale 0% upon power up. If these values are not suitable for your application, they must be changed via this register group.
The CHx scaling value ( register 9) is used to define the input value us ed in the register groups at base addresses 03h, 07h and 0Bh. Unless specified, the full scale value will automatically be set to 1.25% upon power up. If this value is not suitable for your ap­plication, it must be changed via this register group.
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Oxygen Measurement Register Groups
Type of register: Analogue Block Base Address: 01h, 05h and 09h Base address 01h applies to the 1309 number 1 (gas channels 1 to 12) Base address 05h applies to the 1309 number 2 (gas channels 13 to 24) Base address 09h applies to the 1309 number 3 (gas channels 25 to 36)
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode. The registers in the group can be read with the L command.
Register
No.
Content
1 O2 value measured on 1309 gas channel 1 2 O2 value measured on 1309 gas channel 2 3 O2 value measured on 1309 gas channel 3 4 O2 value measured on 1309 gas channel 4 5 O2 value measured on 1309 gas channel 5 6 O2 value measured on 1309 gas channel 6 7 O2 value measured on 1309 gas channel 7 8 O2 value measured on 1309 gas channel 8
9 O2 value measured on 1309 gas channel 9 10 O2 value measured on 1309 gas channel 10 11 O2 value measured on 1309 gas channel 11 12 O2 value measured on 1309 gas channel 12 13 Not used 14 Not used 15 Raw 1 second O2 measurement value from the 1313 16 16-bit Gas channel status register
The 16-bit gas channel status register uses only the least significant 12 bits. If a bit is true (logic 1) this indicates that the corresponding channel’s O2 value has been updated
since the register group was last read. The LSB corresponds to the lo west gas chan nel number.
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Carbon Diox ide Measurement Register Groups
Type of register: Analogue Block Base Address: 02h, 06h and 0Ah Base address 02h applies to the 1309 number 1 (gas channels 1 to 12) Base address 06h applies to the 1309 number 2 (gas channels 13 to 24) Base address 0Ah applies to the 1309 number 3 (gas channels 25 to 36)
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode. The registers in the group can be read with the L command.
Register No. Content
1 CO2 value measured on 1309 gas channel 1 2 CO2 value measured on 1309 gas channel 2 3 CO2 value measured on 1309 gas channel 3 4 CO2 value measured on 1309 gas channel 4 5 CO2 value measured on 1309 gas channel 5 6 CO2 value measured on 1309 gas channel 6 7 CO2 value measured on 1309 gas channel 7 8 CO2 value measured on 1309 gas channel 8
9 CO2 value measured on 1309 gas channel 9 10 CO2 value measured on 1309 gas channel 10 11 CO2 value measured on 1309 gas channel 11 12 CO2 value measured on 1309 gas channel 12 13 Not used 14 Not used 15 Raw 1 second CO2 measurement value from the 1313 16 16-bit Gas channel status register
The 16-bit gas channel status register uses only the least significant 12 bits. If a bit is true (logic 1) this indicates that the corresponding channel’s CO2 v alue has been up­dated since the register group was last read. The LSB corresponds to the lowest gas channel number.
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Hydrocarbon Measurement Register Groups
Type of register: Analogue Block Base Address: 03h, 07h and 0Bh Base address 03h applies to the 1309 number 1 (gas channels 1 to 12) Base address 07h applies to the 1309 number 2 (gas channels 13 to 24) Base address 0Bh applies to the 1309 number 3 (gas channels 25 to 36)
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode. The registers in the group can be read with the L command.
Register No. Content
1 CHx value measured on 1309 gas channel 1
2 CHx value measured on 1309 gas channel 2
3 CHx value measured on 1309 gas channel 3
4 CHx value measured on 1309 gas channel 4
5 CHx value measured on 1309 gas channel 5
6 CHx value measured on 1309 gas channel 6
7 CHx value measured on 1309 gas channel 7
8 CHx value measured on 1309 gas channel 8
9 CHx value measured on 1309 gas channel 9 10 CHx value measured on 1309 gas channel 10 11 CHx value measured on 1309 gas channel 11 12 CHx value measured on 1309 gas channel 12 13 Not used 14 Not used 15 Raw 1 second CHx measurement value from the 1313 16 16-bit Gas channel status register
The 16-bit gas channel status register uses only the least significant 12 bits. If a bit is true (logic 1) this indicates that the corresponding channel’s CHx val ue has been up­dated since the register group was last read. The LSB corresponds to the lowest gas channel number.
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1309 Temperature and Pressure Register Groups
Type of register: Analogue Block Base Address: 04h, 08h and 0Ch Base address 04h applies to the 1309 number 1 (temperature channels number 1 to 6
and barometric pressure number 1)
Base address 08h applies to the 1309 number 2 (temperature channels number 7 to 12 and barometric pressure number 2)
Base address 0Ch applies to the 1309 number 3 (temperature channels number 13 to 18 and barometric pressure number 3)
These are groups of 16 read-only registers each 16 bits wide. They can only be ad­dressed in auto mode. The registers in the group can be read with the L command.
Register No. Content
1 1309 temperature channel number 1 measurement
2 1309 temperature channel number 2 measurement
3 1309 temperature channel number 3 measurement
4 1309 temperature channel number 4 measurement
5 1309 temperature channel number 5 measurement
6 1309 temperature channel number 6 measurement
7 Barometric pressure measurement
8-16 Not used
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Sampling Sequence Register Group
Type of register: Analogue Block Base Address: 13h
This is a group of 3 registers each 16 bits wide. The registers in the group can be writ­ten to with the J or S commands. The registers in the group can be read with the L command.
Each register corresponds to a 1309 Multipoint Sampler. In each register, the 12 least significant bits are used to represent the associated 12 channels, where LSB corre­sponds to the lowest channel.
A set bit (i.e. 1) means that the corresponding channel is part of the Sampling Se­quence. A cleared bit (0) means that the channel is not part of the Sampling Sequence.
Register
no.
Description
1 Channels 1 to 12 2 Channels 13 to 24 3 Channels 25 to 36
A Sampling Sequence defined from the interface becomes active when the previous Sampling Sequence has finished the current measurement cycle.
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Combined Register Group
Type of register: Analogue Block Base Address: 13h
This is a group of 8 registers each 16 bits wide. These are used to present common in­formation in a single register group when in Remote Mode. All information in these registers is read-only.
Register
no.
Description Explanation
4
Sampling Channel
Control Register
This is a read-only version of the Sampling Channel Control Register at address 10h
5
Control Register
This is a read-only version of the Control Register at address 11h
6
Averaged CO2
Measurement Reg.
This is a copy of the General Register Group at base address 12h, reg. no.1
7
Averaged O2
Measurement Reg.
This is a copy of the General Register Group at base address 12h, reg. no.2)
8
Averaged CHx
Measurement Reg.
This is a copy of the General Register Group at base address 12h, reg. no.6)
9
Average Reg. interval
in seconds
This register returns an integer. If Average is
OFF, then the register returns 1. If Average is ON, then the register returns the number of sec­onds elapsed since averaging started.
10 Reserved
These registers are reserved for future use and
return 0000h
11 Reserved
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Gas Channel S tatus Acknowledge Register Group
Type of register: Analogue Block Base Address: 13h and 14h
This is a group of 9 registers each 16 bits wide. They provide the status of carbon dioxide, oxygen and hydrocarbons in each of the 1309 Multipoint Samplers.
Base
Address
Register
no.
Description
13h 12
Gas Channel Status Acknowledge Register for O2 in
1309 number 1
13
Gas Channel Status Acknowledge Register for CO2 in
14
Gas Channel Status Acknowledge
Register for CHx in
15
Gas Channel Status Acknowledge Register for O2 in
1309 number 2
16
Gas Channel Status Acknowledge Register for CO2 in
14h
1
Gas Channel Status Acknowledge
Register for CHx in
2
Gas Channel Status Acknowledge Register for O2 in
1309 number 3
3
Gas Channel Status Acknowledge Register for CO2 in
4
Gas Channel Status Acknowledge
Register for CHx in
In each register, the 12 least significant bits are used to represent the 12 channels in the Multipoint Samplers, where the least significant bit represents the lowest channel num­ber. Bit 15 corresponds to the internal gas channel 0. A set bit (1) means that a new measurement for the corresponding gas is completed on the corresponding channel.
Note that the bits in these registers are not cleared (0) when the corresponding concen­trations are read from the Measurement Registers.
To clear the bits in these registers, a bit mask containing set bits (1) needs to be written to the register.
7.7.3 Command Structure
This is an example command: >12GCEDcr
1. All commands start with the start of command (SOC) character “>”
2. Immediately after the SOC come the destination register’s address expressed in
hex – 12
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