Emerson NGA2000 Reference Manual

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Table of Contents
Reference Manual
748384-C
September 2003
NGA2000 Reference
http://www.processanalytic.com

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  • Page 1 Reference Manual 748384-C September 2003 NGA2000 Reference http://www.processanalytic.com...
  • Page 2 U.S. registered trademark of Echelon Corporation. LONTALK™ and LonManager™ are trademarks of Echelon Corporation. ® is a U.S. registered trademark of International Business Machines. Emerson Process Management Rosemount Analytical Inc. Process Analytic Division 1201 N. Main St. Orrville, OH 44667-0901...
  • Page 3: Table Of Contents

    Troubleshooting ......................1-16 Linearization ..........................1-18 a. Basic Instructions ......................1-18 b. Advanced instructions .....................1-18 c. Details ..........................1-19 d. Troubleshooting ......................1-19 Linearization Touch-Up ......................1-21 a. Basic Instructions ......................1-21 b. Details ..........................1-21 c. Troubleshooting ......................1-21 Rosemount Analytical Inc. A Division of Emerson Process Management Contents...
  • Page 4 Differences Between The System Autocalibration Module And The Single Autocalibration Module ....................1-45 c. Use Of The System Autocalibration Module And The Single Autocalibration Module ...1-45 1-26 Synchronizing Autocal Modules ....................1-47 a. Basic Instructions ......................1-47 Contents Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 5 Reference Manual 748384-C NGA2000 Reference September 2003 ANALYZER VARIABLES .....................2-1 Introduction ..........................2-1 I/O MODULES VARIABLES ....................3-1 Introduction..........................3-1 LIST OF ILLUSTRATIONS Figure 1-1. Typical Menu........................1-1 Figure 1-2. Analyzer Algorithm ......................1-27 Rosemount Analytical Inc. A Division of Emerson Process Management Contents...
  • Page 6 Reference Manual 748384-C NGA2000 Reference September 2003 Contents Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 7: Preface

    Highlights an operation or maintenance procedure, practice, condition, statement, etc. If not strictly observed, could result in damage to or destruction of equipment, or loss of effectiveness. NOTE Highlights an essential operating procedure, condition or statement. Rosemount Analytical Inc. A Division of Emerson Process Management Preface...
  • Page 8: Safety Summary

    WARNING. PARTS INTEGRITY Tampering or unauthorized substitution of components may adversely affect safety of this product. Use only factory documented components for repair. Preface Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 9: Glossary Of Terms

    Dynamic Data Exchange - a Microsoft Windows function that allows programs to talk to other programs. DDE Server Rosemount Analytical NGA2000 PC Interface Suite, consisting of software and hardware elements that al- low communication between NGA2000 components and a personal computer (PC).
  • Page 10 Inrush Current Limiting To limit the current drawn by a piece of electronics when it is first switched on. Infinite-Impulse-Response Preface Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 11 A number between 0 and 65535, expressed as a 16-bit number. There can be up to 10 integer variables in an array. Linearization The function of making sure that the readings in between the zero and span point read correctly The digital network used by NGA2000 analyzers. MCFID Multi Component Flame Ionization Detector Analyzer module. Modbus A protocol that operates over RS232 or RS485 links.
  • Page 12 Power Supply Any of a variety of components that provides conditioned power to other NGA2000 components, from the Power Supply Board that plugs into the front of the Backplane in a stand-alone instrument to several larger ones that can power larger collections of modules and components.
  • Page 13 An individual or organization who designs and/or builds analytical systems. Technical Level In the NGA2000 menus system, refers to the controls and configuration capability, and diagnostic informa- tion appropriate for analyzer technicians. Total Hydrocarbons, a term for the total quantity of hydrocarbons present, regardless of their type.
  • Page 14 Reference Manual 748384-C NGA2000 Reference September 2003 Preface Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 15: Introduction

    The NGA menus have three separate paths, called basic, expert and technical. These paths are setup so as to separate the functions Rosemount Analytical Inc. A Division of Emerson Process Management Introduction...
  • Page 16: System Setup

    Wait while the system restarts, and then re- enter the binding menu. Repeat the procedure for each I/O module until all are bound. Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 17: C. Advanced Instructions

    Analyzer Power analyzers, and again press the “RE-INIT” The quality of the analyzer power is impor- button. tant. It must be within a couple of volts of Rosemount Analytical Inc. A Division of Emerson Process Management Introduction...
  • Page 18: Details

    Individual analyzers may also have internal with it. serial numbers reported in other variables visible in their Manufacturing data screen. Details Network variables: TAG, AMSN, AMBC, TAG Variable GAS, CARBON_ATOMS. Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 19 The limit with a V2.2 control module is about 6 analyzers. With a V3.0 control module it is 15 analyz- ers. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction...
  • Page 20: Troubleshooting

    Then press "RE-INIT" when power comes up. Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 21: Basic Instructions

    If the I/O has to make the analyzer range change, the total transaction may take up to half a second, and there may be a glitch in this time. 3. Select Service menus... Rosemount Analytical Inc. A Division of Emerson Process Management Introduction...
  • Page 22: C. Details

    I/O module as well. Network variables: RNGHI, RNGLO, CRANGE, CURRENTRNGHI, CURREN- TRNGLO, MAXRANGE, MINMANGE, LIN- RNGHI, LINA0_, LINA1_, LINA2_, LINA3_, LINA4_ Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 23: Advanced Instructions

    In this case, carefully zero and span the analyzer on the reference gas, and then measure the "span" gas with the analyzer. Enter the re- Rosemount Analytical Inc. A Division of Emerson Process Management Introduction...
  • Page 24: General Zero/Span Setup

    When it tries to span the ranges, if the span gas the appropriate time, zero them and span is above 10% and below I/O% of the range them. It is a common error to assume that 1-10 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 25: Troubleshooting

    RSTR ... softkeys. This will at least Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-11...
  • Page 26 1-12 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 27: Zeroing

    Set the Gas to be used for calibration: to View the factors, and if desired, edit the "Zero gas". "Zero factor" to the raw signal number Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-13...
  • Page 28 If you expose the ana- above considerations, unless you have lyzer to a really high concentration of such made a gross error in the sampling system. materials, such as by spilling gasoline near 1-14 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 29 You can test for leaks by shutting the sam- ple flow off both upstream (first!) and down- stream of the analyzer. The oxygen reading Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-15...
  • Page 30: Basic Instructions

    For menu. example, entrained condensate in the sys- tem will affect the span stability. So will the Enter the Main menu. 1-16 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 31 • concentration is correctly entered into the Incorrect linearizer coefficients analyzer. If so, troubleshoot why the ana- • Span gas outside allowable range lyzer's span has changed so much. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-17...
  • Page 32: Basic Instructions

    1-18 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 33: Details

    You may have to increase the analyzer's t90 time to get better signal to mally, 25°C is chosen for this, and minor noise ratio. errors will have little effect. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-19...
  • Page 34 If all else fails, and you have to make the sistors, or sample conditions, or specific analyzer work without being able to resolve parameters. the real problem, you can use the tweak 1-20 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 35: Linearization Touch-Up

    Edit Point 1 gas concentration: to the are editing the point that you have selected, named value on the bottle. or that you have selected the point you are Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-21...
  • Page 36 Verify that the analyzer is working correctly, and span calibrations are correct. Also ver- for example that the ozonator lamp in a ify that you have selected the correct lin- CLD. 1-22 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 37: Response Time

    Edit the LON update rate for the desired until it reaches its full change. You are then rate, normally 10 per second. compensating for differences in sample path, as well as differences in analyzer performance. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-23...
  • Page 38: Advanced Instructions

    The response time may be too short. In- crease it until the noise level is satisfactory. 1-24 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 39: Analyzer Module Historical Data

    In the screens showing the zero Press the "HOME" key to get back to the and span factors there are links to screens Main menu. showing historical factors, and softkeys that Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-25...
  • Page 40: Analyzer Algorithm

    SPAN, LINSTAT, LINA0_, LINA1_, LINA2_, This is achieved using a successive approxima- LINA3_, LINA4_, CALRNGHI, BAROMETER, tion technique. CAL_PRESS, CAL_PRESSURE, PVA, PVA- CEMS 1-26 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 41: Figure 1-2. Analyzer Algorithm

    Multiply by is value reading Digital Zero/Span Linearize CALRNGHI between -0.05 from Filter Adjust (4th order) to generate and 1.05 Signal Temperature Board Compensation Calibration Function Figure 1-2. Analyzer Algorithm Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-27...
  • Page 42: Security

    Select Security codes... you want it to work on. Do this in the screen immediately above the security Enable whichever set of codes you wish to password entry screens. use. 1-28 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 43: Basic Instructions

    The Current time: line should now show the correct date and time. Network variables: I_TIME, C_ TIME Verify that the network updating: line is en- abled. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-29...
  • Page 44: Basic Instructions

    Select the module you want, and then se- lect Displayed parameters... Press the left arrow key. Select the parameters to be displayed from Select Auxiliary lines... this module. 1-30 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 45: Manufacturing And Service Data

    You can also record security codes from this area. The menus are identical to those in Sys- tem setup. Network variables: AMSERNOTEA, AMSER- NOTEB, AMSERNOTEC, AMSERNOTED, AMSERNOTEE, AMSERNOTEF, AMSER- NOTEG, AMSERNOTEI, AMSERNOTEJ Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-31...
  • Page 46: Analyzer Status

    CAL_RAWSIG, CAL_VALIDITY, CAL- analyzer alarm state in the Auxiliary module DATE_Z, CALDATE_S setup under Expert controls and setup Network variables: GENERALSTATE 1-32 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 47: Analyzer Validity Status

    VALIDITY variable as INVALID. This may be seen on the auxiliary lines, and reported via the I/O module like the other status variables. Network variables: VALIDITY Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-33...
  • Page 48: Analyzer Internal Data Storage

    Using the DDE server program and an ap- plication such as Excel, use a macro or program to interrogate the analyzer. It will take a few minutes to download all the data. 1-34 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 49: Troubleshooting

    Only the section of memory that has been filled since the power failure will have any meaningful data in it. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-35...
  • Page 50: Serial I/O Module

    You have to configure the serial I/O card manually, telling it what modules have been installed. Telling the computer the wrong thing will degrade the response time of the system, but will not cause a crash. 1-36 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 51: Network Issues

    LON Data Details A number between 0 and 65535, expressed as a 16-bit number. There can be up to 10 See Section 2 for details. integer variables in an array. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-37...
  • Page 52: Modbus

    (in our implementation) or string informa- sponding registers is available from the Modbus tion. Registers are addressed by a scheme that connection directly as an ASCII file. determines first the analyzer module (or sub- 1-38 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 53: Pc Lon Interface

    DDE functionality to transfer data to NOTE and from the DDE server. It is not possible to write data into a plat- form control module from a PC, due to Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-39...
  • Page 54: Details

    It is organized as a "conversation", with topics and data. You start a conversation, deter- mine a topic and request or write (Poke in Visual Basic, or Excel) data. 1-40 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 55 Establish what ANALYZER_TAG and VARI- ABLE_NAME are here. The Chr(34) Dim Variable_return as variant expression inserts a quote ("), used to han- dle the case where the TAG variable con- Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-41...
  • Page 56 Also note the absence of paren- LON_into_string(Node_list_array) theses. NODE_LIST will be a set of triplets, ar- ranged as NODE_NUMBER, NODE_TYPE, and NODE_TAG. The series repeats for each node. 1-42 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 57: Ak Example Using The Windows Terminal Emulator

    0 after a second or so of Windows, set the function keys to have each command(^M^B_ESVC Kn S600 commands as follows: AMFN 0^C). Label "Reading" - command "^M^B_AKON K1^C” Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-43...
  • Page 58: Alarm I/O Module General Information

    I/O module and it will control the ana- cuits, and so should not be used to calibrate lyzer's range. See Section 1-3 on page 1-7 the latter. for more details on the ramifications of this. 1-44 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 59: Autocalibration Modules

    Verify that the gases are correct, and the have separate zero and span gas paths into Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-45...
  • Page 60 Autocalibration module and synchronize them all. NOTE The synchronization merely synchro- nizes the start time of the sequence, the subsequent sections are NOT synchro- nized. 1-46 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 61: Synchronizing Autocal Modules

    Enter General parameters... dependent module will ignore a master, and simply work on its own internal timing. Select This module's control status: Edit this to MASTER, SLAVE or INDE- PENDENT. Rosemount Analytical Inc. A Division of Emerson Process Management Introduction 1-47...
  • Page 62 Reference Manual 748384-C NGA2000 Reference September 2003 1-48 Introduction Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 63: Analyzer Variables

    It is impossible to stop safety failure alarms from being reported, although currently these are only present in the FID analyzer. This variable may be superseded in releases later than 2.2. See also Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables...
  • Page 64 Used to delay the output of one analyzer with respect to another, so as to cause their responses to a gas change to be aligned in time. This is only useful for systems of analyzers. See also AFT90_ Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 65 31 characters Units None Description The last service date Usage Automatically loaded with the current date and time when the menus are entered for this analyzer. See also AMSERVDATE AMMFGDATE Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables...
  • Page 66 Type String Value range 31 characters Units None Description The in-service date Usage Manually entered when the unit is put into service. This is optional. See also AMSERVDATE AMMFGDATE Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 67 There is a special function in the manufacturing data screen which automatically stores this and other such variables. See also VOLTS_IS PRES_WAS FLOW_WAS TEMP_WAS ZERO_WAS SPANWAS PVWAS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables...
  • Page 68 BAROMETER. The analyzer uses BAR_INTERNAL if it is set to use its internal pressure measurement, BAROMETER if set to use the external one. See also BAROMETER BAR_ENABLE Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 69 CLD only; bias temperature for the sensor block temperature control algorithm. Usage Used in the sensor block temperature control FID algorithm. This value should not be adjusted. See also BLOK_IGAIN BLOK_PGAIN BLOK_SETP Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables...
  • Page 70 ZERO (or SPAN) OVER I= means that the reading just before the zero or span operation was in error by an amount greater than that in CALFPC. See also CAL_VALIDITY CALFPC Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 71 Units None Description Ranges with valid zero and span calibrations Usage Shows which ranges were able to be both zeroed and spanned at the last calibration See also CAL_ERR_MSG Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables...
  • Page 72 Shows the time and date of the last zero. This requires that a control module be used with the analyzer so that its internal clock is updated, or alternatively a PC can be used to write into I_TIME. See also CALDATE_S 2-10 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 73 10% higher than the range's upper limit. In these cases it will not calibrate the ranges it can't, but it will calibrate the others. In general it is best to calibrate ranges separately. See also CALCHKLIMITS SPANGAS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-11...
  • Page 74 I/0 Module: Indicates that the module is currently zeroing or spanning. Used to indicate the present status of this module's calibration cycle, based on how the analyzer has responded to a calibration command. See also AMFN 2-12 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 75 Used to determine the signal gains used for each range. The CLD output is directly proportional to the flow rate, and so changes in this require changes in gain to compensate. See also FLOW_FACTOR Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-13...
  • Page 76 FID only; the integral "gain" for the temperature control algorithm. Usage Used in the control algorithm. This value has been experimentally determined, and should not under any circumstances be changed. See also CASE_BIAS CASE_PGAIN CASE_SETP 2-14 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 77 Used to determine the set point for the control algorithm. This value has been experimentally determined, and should not under any circumstances be changed. See also CASE_IGAIN CASE_PGAIN CASE_BIAS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-15...
  • Page 78 CLD only; the integral "gain" for the converter temperature control algorithm. Usage Used in the control algorithm. This value has been experimentally determined, and should not under any circumstances be changed. See also CONV_BIAS CONV_PGAIN CONV_SETP 2-16 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 79 Note that this is an enumerated type - its value is one less than the range, i.e. a value of 0 refers to range 1, a value of 1 refers to range 2 etc. See also CONTROL Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-17...
  • Page 80 Shows the value of source current at manufacturing check out time. This is automatically written by the manufacturing data storage function, and it should not be over-written. See also CURR_SENS 2-18 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 81 RNGHI. The analyzer copies the value of the appropriate element of RNGHI into this variable whenever CRANGE is changed. See also RNGHI CRANGE Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-19...
  • Page 82 SPANGAS. The analyzer copies the value of the appropriate element of SPANGAS into this variable whenever CRANGE is changed. See also SPANGAS CRANGE 2-20 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 83 - the time referring to the desired data point. If the value of the second element is greater than 59, the first element then is taken to refer to the index of the data point. See also DATA_POINT Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-21...
  • Page 84 7-element floating point array, 7-element integer array Value range Undetermined Units None Description Debug variables used in software development Usage Used only for software development, Undetermined contents See also DEBUG 2-22 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 85 Status of the purge air switch Usage Reports the present status of the above factors. Note that element 5 reports whether the flame is on or not. See also DIGDIAGA Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-23...
  • Page 86 The fan will not run if the duty cycle is set less than 50%, so this variable is used to make sure that the algorithm does not try to set the duty cycle too low at start up. See also 2-24 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 87 CLD only; the capillary flow factor Usage Used as a multiplier for the CAP_FLOWRATE variable so that the output compensation for flow changes is correct See also CAP_FLOWRATE Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-25...
  • Page 88 Set according to the physical assembly of this particular version of FM analyzer. It controls the signal gain, along with CARBON_ATOMS, CAL-PRESS and so on. Normally you should not change this. See also CARBON_ATOMS CAL_PRESS 2-26 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 89 Used to determine the starting value for the control algorithm. This value has been experimentally determined, and should not under any circumstances be changed. See also HEATER_IGAIN HEATER_PGAIN HEATER_SETP Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-27...
  • Page 90 CLD only; values of TEMP_IS at manufacturing check out time Usage Provides historical data on how the analyzer was set up during final check out See also TEMP_IS 2-28 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 91 The glow plug requires a current flow for a certain period in order for it to warm up enough to ignite the fuel. This variable sets that time. It is normally 3 seconds See also IGNITECYCLES Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-29...
  • Page 92 Shows any interaction between zero and span operations. If the zero operation affects the span, this will show a change. It is most useful when tying to calibrate an analyzer with a non-zero zero gas. See also LASTZERO 2-30 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 93 -1 - 1,000,000 (-1 shows that no value has been entered) Units Description Linearization function actual gas input value. Usage Used in the "Tweak' and self linearization functions to enter the actual gas concentrations. See also Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-31...
  • Page 94 Linearization function measured gas value as linearized. Usage Used in the "Tweak" and self linearization functions to show the linearized measured gas concentrations corresponding to the actual concentrations in LIN_GASESA, etc. See also 2-32 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 95 It is essential that the polynomial produced be monotonic over the range of 0 - 1, otherwise the calibration routines may fail. See also Other LINxxxxxxxx variables Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-33...
  • Page 96 LINFORRANGE is used when the analyzer range is set to range 1. If disabled, no linearization curve is used on that range at all. See also Other LINxxxxxxxx variables 2-34 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 97 Description Reports what the analyzer is currently doing - or has done - in the self linearization process. Usage Used to give feedback to the user. See also Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-35...
  • Page 98 Usage See MID_GASA, MID_GASB. These are the measured values for those gases, before they are forced to be equal to those values by the "Tweak" function. See also 2-36 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 99 The MOD_TEXT_xxx variables share data, they will always contain the same value, although the phrases to which this value refers are different for each variable. See also MOD_TEST_INS MOD_TEST_TXT MCHECKTIME Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-37...
  • Page 100 If the bottle is of dubious quality, it may be desirable to compare its reading with that of a known good standard, and then mark the bottle and this variable accordingly. See also SPAN SPANWAS 2-38 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 101 80% of the peak value is reached. See also SIGNAL_GAIN DET_SIG RAW_SIGNAL Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-39...
  • Page 102 Used to determine the set point for the control algorithm. This value has been experimentally determined, and should not under any circumstances be changed. See also OVEN_IGAIN OVEN_PGAIN OVEN_BIAS 2-40 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 103 FID only; bypass sample flow lower limit Usage Used to generate a warning alarm if the bypass sample flow drops below the value set in this variable. See also FLOW_IS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-41...
  • Page 104 Controls the end of the peltier cool down cycle. This variable only affects the initial cool down, editing it once the CLD is operational will not affect the current Peltier temperature. Do not adjust this variable! See also 2-42 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 105 Element 1 - 1250; element 2 - 1.5 Units None Description Offset and slope respectively for the pressure compensation algorithm. Usage Used to determine how the pressure compensation algorithm works. See also BAROMETER PCOMP_GAIN Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-43...
  • Page 106 (the SI unit), but it is interpreted as hPa or as psig as PPU is selected. It is important to note that the pressure value itself is not changed, it is merely displayed differently. See also 2-44 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 107 Shows the analyzer that its measurement is invalid, because it is not measuring process gas. For example, a sample system controller may be flowing a calibration gas, or purging a system with air or nitrogen. See also VALIDITY Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-45...
  • Page 108 PVA is still reported. This is true even of analyzers that cannot perform a measurement, such as a MID with no flame. See also VALIDITY OPSTATUS PVACEMS 2-46 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 109 Historical values of OSC_TUNE and PERCENT_MOD respectively. These show how the instrument was working when it was tested during the manufacturing process. These values are loaded automatically by the manufacturing data storage function. See also OSC_TUNE PERCENT_MOD Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-47...
  • Page 110 Heater FET duty cycle (NDIR, PMD), Oven controller duty cycle (HFID), Converter duty cycle (CLD). Detector cooler (Peltier) duty cycle (CLD). Usage Shows the duty cycle of the control algorithm for these devices. See also 2-48 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 111 FED which changes a range resistor between certain settings. However the output resolution is affected, as is the operation of a. linearizer algorithm. See also RNGLO MAXRANGE MINRANGE Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-49...
  • Page 112 CLD: Used to provide an offset for the analog circuitry. This value is not changed in operation. NDIR and PMD: An offset in the analog circuitry. This is not used, and should not be altered. See also 2-50 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 113 CURR_SENS is as set up originally, typically about 1A. Long bench IRs require a higher setting, and short bench IRs require a lower setting. See CURR_SENS for more information. See also CURR_SENS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-51...
  • Page 114 The value of the span gases when the unit was linearized. Usage Used for the temperature compensation scheme, this value is recorded by the analyzer so as to allow it to compensate correctly. See also SPANGAS 2-52 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 115 Used to allow the 1/0 Module to select which specific alarm to assign to which relay. These values are shown on the 1/0 module alarm selection menu. See also ST2NAME ST3NAME ST4NAME STCONT Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-53...
  • Page 116 Not used in analyzers covered by this document. INVALID SELECTION is not shown on the menus. The seventh and eighth elements of STCONT apply to this variable. See also ST1NAME ST2NAME ST3NAME STCONT 2-54 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 117 Description The sample bypass flow rate upper limit Usage Used in the alarm system to provide the upper limit for the flow alarm. See also SVFLL FLOW_IS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-55...
  • Page 118 1/0 module menus. It is also used to select the module during the binding process. It may be changed as desired via the menus. See also AMSN AMTAG KOTAG 2-56 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 119 Peltier device temperature (CLD), Preamp temperature FID). Sample temperature (HFID). Oven temperature (HFID). Usage These are the values of the internal temperature readings at manufacturing check out time. See also TEMP_IS Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-57...
  • Page 120 Sensor block temperature upper limit (CLD), Preamp temperature (FID). Sensor block temperature lower limit (CLD), Preamp temperature (FID). Usage Limits on the temperature measurements. If transgressed, the alarm system Will issue warning alarms. See also TEMP_WAS 2-58 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 121 Not used. If implemented, will control the length of time over which the internal storage will run. In version 2.2 or earlier, this is fixed at 24 hours. See also TRENDVAR Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-59...
  • Page 122 Invalid calibration on this range Flame out (FID only) Ozonator switch off (CLD only) PROCESS variable reported anything but 0 (i.e. not from process). See also OPSTATUS GENERALSTATE 2-60 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 123 NDIR and PMD only; determines the temperature compensation for the offset coefficient. Usage Used to set the zero temperature compensation in the NDIR and PMD analyzers. See also SPAN_COMP Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-61...
  • Page 124 ZERO should be the same as the value of RAW_SIGNAL while zero gas is flowing, and a zero may be effected by simply copying the value of RAW_SIGNAL into the appropriate element of ZERO. See also SPANGAS ZERO 2-62 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 125 If it fails to zero any range, it will set CALRESULT such that any failed ranges are uncalibrated. In this case it will leave the original zero factor unchanged. See also ZERO CALRANGES Rosemount Analytical Inc. A Division of Emerson Process Management Analyzer Variables 2-63...
  • Page 126 Reference Manual 748384-C NGA2000 Reference September 2003 2-64 Analyzer Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 127: I/O Modules Variables

    Usage May be used to initiate a manual cycle as programmed, a full autocalibration cycle or to abort a current cycle. See also AMFN in the analyzer list Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables...
  • Page 128 "LOW-LOW" is the same but implying a lower alarm level than a "LOW" alarm. "Disabled" keeps the relay in its non-alarmed state no matter what the concentration. See also ALLVL ALOP I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 129 (or 4 mA), to full scale (5V or 20mA), or to hold at its last value. This should be chosen based on the results of such a failure. See also Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables...
  • Page 130 Binds to the ANIFN variable in the analyzer. Used to control various functions in the analyzer. This is bound to analyzer number 3. See also AMFN (Section 2) I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 131 AIO and ACAL only; the present output value of the analog output circuit. Usage Shows the voltage or current output, for display on the control module. See also ANOPUNITS RNG1EI Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables...
  • Page 132 It is often necessary to iterate between settings of offset and gain a few times to get a perfect calibration. See also TESTMODE IODIAG I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 133 If the cycle does not complete, the incomplete values will be represented by the very large negative number. See also CAL_DRIFTA CAL_DRIFTC CAL_DRIFTD Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables...
  • Page 134 If the cycle does not complete, the incomplete values will be represented by the very large negative number. See also CAL_DRIFTA CAL_DRIFTB CAL_DRIFTC I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 135 See also CAL_NOWI MSTR_SLV Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables...
  • Page 136 SCAL module realizes that the analyzer zero has failed, and it will abort the calibration cycle at this point. See also CALSTATA CALSTATB CALSTATC CALSTATD 3-10 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 137 CALSTAT with its zeroing message, the SCAL module realizes that the analyzer zero has failed, and it will abort the calibration cycle at this point. See also CALSTATA CALSTATB CALSTATC CALSTATD Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-11...
  • Page 138 0 refers to range 1, a value of 1 refers to range 2 etc. See also CRANGEO CRANGE (in Section 2) 3-12 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 139 90% reading, and in calibration it is essential that the analyzer comes to a 99.9% reading for 0. 1 % span or zero accuracy. See also CALSTAT Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-13...
  • Page 140 (PVA) reaches 100. If the concentration then drops back again, it will have to drop by the percentage given in this variable before the relay changes state again. See also ALLVL RNGHI 3-14 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 141 ACAL, SCAL only; determines whether the digital input lines can control the calibration function. Usage If enabled, this allows the digital input lines to the 1/0 module to control the calibration function. See also ILINE Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-15...
  • Page 142 If set to DISABLED, the output will track the PVA reading during maintenance. If set to ENABLED, the output will hold at its last value as soon as the menus are entered. See also IOHOLDCAL 3-16 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 143 The tags that select subnodes in the SCAL module. These are used to select which subnode to bind to which analyzer. The tags are generated automatically from the base tag in SUBNODE_BASE. See also K0TAG SUBNODE_BASE Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-17...
  • Page 144 PVA calculated by the analyzer. See also 3-18 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 145 SCAL only; The primary variable input- the main gas measurement from the analyzer 2. Usage Equivalent to PVIA for subnode 2, bound to analyzer 2 in the SCAL. See also VALIDITY OPSTATUS PVACEMS PVIA PVIC PVID Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-19...
  • Page 146 On each span gas, the range used on each analyzer can be selected. Default means that the range that is currently in use in the analyzer is unchanged. See also RANGE_SVB_ RANGE_SVC_ RANGE_SVD_ 3-20 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 147 On each span gas, the range used on each analyzer can be selected. Default means that the range that is currently in use in the analyzer is unchanged. See also RANGE_SVA_ RANGE_SVB_ RANGE_SVC_ Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-21...
  • Page 148 Element 3 delays the range change so as to avoid nuisance changes on short term spikes, and element 4 is further insurance against range toggling. See also 3-22 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 149 For this reason the length of the string in this variable is truncated to 29, making it pointless to enter more letters than that! See also K1TAG K2TAG K3TAG K4TAG Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-23...
  • Page 150 SCAL only; shows the AMTAG belonging to analyzer 2. Usage Allows the menus for the SCAL module to identify which analyzer is regarded as analyzer 2. See also AMTAG (in Section 2) TAGA TAGC TAGD 3-24 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 151 Setting either element to TEST causes the various variables that can directly set the output to be operational. The module will reset the variable to AUTO after 1 minute. See also RSTATUS CAL_ Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-25...
  • Page 152 RAW-SIGNAL into the appropriate element of ZERO. See also SPANGAS ZERO 3-26 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management...
  • Page 153 If it fails to zero any range, it will set CALRESULT such that any failed ranges are uncalibrated. In this case it will leave the original zero factor unchanged. See also ZERO CALRANGES Rosemount Analytical Inc. A Division of Emerson Process Management I/O Modules Variables 3-27...
  • Page 154 Reference Manual 748384-C NGA2000 Reference September 2003 I/O Modules Variables Rosemount Analytical Inc. A Division of Emerson Process Management 3-28...
  • Page 155 WARRANTY Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in workmanship and material under normal use and service for a period of twelve (12) months from the date of shipment by Seller. Consumables, glass electrodes, membranes, liquid junctions, electrolyte, o-rings, etc., are warranted to be free from defects in workmanship and ma- terial under normal use and service for a period of ninety (90) days from date of shipment by Seller.
  • Page 156 Reference Manual 748384-C Model NGA2000 Reference September 2003 EMERSON PROCESS MANAGEMENT EUROPEAN TECHNOLOGY CENTER Rosemount Analytical Inc. Process Analytic Division Fisher-Rosemount GmbH & Co. 1201 N. Main St. Industriestrasse 1 Orrville, OH 44667-0901 63594 Hasselroth T (330) 682-9010 Germany F (330) 684-4434...

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