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Michell Instruments Condumax II User Manual

Hydrocarbon dew-point analyzer
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Condumax II
Hydrocarbon Dew-Point Analyzer
User's Manual
97081 Issue 28.1
July 2018

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Summary of Contents for Michell Instruments Condumax II

  • Page 1 Condumax II Hydrocarbon Dew-Point Analyzer User’s Manual 97081 Issue 28.1 July 2018...
  • Page 2 Please fi ll out the form(s) below for each instrument that has been purchased. Use this information when contacting Michell Instruments for service purposes. Analyzer Code Serial Number Invoice Date Location of Instrument Tag No Analyzer Code Serial Number Invoice Date...
  • Page 3 © 2018 Michell Instruments This document is the property of Michell Instruments Ltd. and may not be copied or otherwise reproduced, communicated in any way to third parties, nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd.

  • Page 4: Table Of Contents

    System Description ....................1 1.2.1 Sample Gas Path ................... 1 1.2.2 Operating Overview..................3 1.2.3 Condumax II User Display and Interface ............3 1.2.4 Calibration ....................3 Condumax II Analyzer Storage Instructions ............... 4 INSTALLATION ....................5 Electrical Safety ...................... 5 2.1.1...
  • Page 5 Condumax II User’s Manual 3.10 Adjusting and Viewing System Variables ..............32 3.10.1 Enter Password ................... 32 3.10.2 Variable Pages .................... 32 3.10.3 Variables Page 1 ..................33 3.10.4 Variables Page 2 ..................33 3.10.5 Variables Page 3 ..................33 3.10.6...
  • Page 6 Condumax II User’s Manual Appendices Appendix A Technical Specifi cations ................47 Mounting Drawing ............... 48 Flow Diagram ................49 Wiring Hook-Up Diagram ............. 50 Appendix B Modbus RTU Communications ..............52 Introduction ................52 Modbus RTU Basics ..............52 Modbus RTU Basics ..............

  • Page 7: Safety

    Condumax II User’s Manual Safety This manual contains all the required information to install, operate and maintain the Condumax II. Prior to installation and use of this instrument, this entire manual should be read and understood. Installation and operation of this product should be carried out by suitably competent personnel only.

  • Page 8: Abbreviations

    Condumax II User’s Manual Abbreviations The following abbreviations are used in this manual: alternating current pressure unit (atmosphere) barg pressure unit (=100 kP or 0.987 atm) gauge °C degrees Celsius °F degrees Fahrenheit direct current dew point European Union grams per cubic meter...

  • Page 9: Introduction

    50°C below the operating temperature of the analyzer. The Condumax II operates on a periodic measurement cycle basis. The sample fl ow is continuous until, at the start of a measuring cycle, the fl ow is interrupted, trapping a sample of gas within the sensor cell until the dew point is measured.
  • Page 10 Condumax II User’s Manual INTRODUCTION The measurement system components are housed within a cast aluminum EExd rated enclosure. The enclosure has a screw cover incorporating a sealed window. It is chromate primed, polyester coated in black, and provides environmental protection to IP66/NEMA 4.

  • Page 11: Operating Overview

    1.2.3 Condumax II User Display and Interface The Condumax II User Display and Interface Unit is presented via the circular window of the enclosure. Operation is achieved by a unique system which allows full control through the glass of the enclosure cover. The cover is fully detachable for greater access into the enclosure during the installation and initial set-up of the instrument.

  • Page 12: Condumax Ii Analyzer Storage Instructions

    The documentation supplied with the analyzer should be removed from the packaging crate and stored elsewhere to protect its integrity. For the period from installation of the Condumax II analyzer to commissioning start-up, the following precautions should be followed: •...

  • Page 13: Installation

    Condumax II User’s Manual INSTALLATION INSTALLATION Electrical Safety WARNING: During the installation of this product ensure that all applicable national and local electrical safety regulations are observed. WARNING: Isolate the power prior to installation. WARNING: Always ensure that power is switched off prior to accessing the product for any purpose other than normal operation or prior to disconnecting any cables.

  • Page 14: Figure 2 Earthing Stud And Nut Washer Assembly

    Earthing Stud And Nut Washer Assembly Figure 2 Fuse: A replacement fuse can be obtained by contacting Michell Instruments' technical support. Fuse rating = 5 x 20mm 2.5 A anti-surge to IEC 60127-2. This product is designed to operate, as a minimum, between a temperature range of -40 to +60°C, in maximum 80% relative humidity for temperatures up to +31°C decreasing...
  • Page 15 Condumax II User’s Manual INSTALLATION Location and mounting arrangements - refer to the relevant sections of this manual for the location and mounting details. Installation of this equipment must include the provision of a suitable and locally positioned power isolation switch or circuit breaker. Indication of the purpose of the switch or circuit breaker is strongly recommended.

  • Page 16: Hazardous Area Safety

    Condumax II User’s Manual INSTALLATION Hazardous Area Safety Refer to Appendix G for the Hazardous Area Certifi cation of this product. This product is fi tted with a marking label that contains Hazardous Area information pertinent to the suitable location and installation.

  • Page 17: Pressure Safety

    Condumax II User’s Manual INSTALLATION Pressure Safety WARNING: This product is used in conjunction with pressurized gases. Observe pressurized gas handling precautions. WARNING: Pressurized gas is dangerous. Pressurized gas should only handled by suitably trained personnel. This product requires pressurized gas to be connected to it. Observe pressurized gas handling regulations.

  • Page 18: Measurement System

    Condumax II User’s Manual INSTALLATION Measurement System Refer to the Installation & Maintenance Information sheet (supplied separately) and the System Drawings in Appendix A. The instrument is housed in an aluminum EExd enclosure suitable for wall or panel mounting. Four mounting points are available with M12 clearance holes on fi xing centres of X = 270mm (10.62") x Y = 318mm (12.51").

  • Page 19: Gas Connections, Sample Extraction & Conditioning

    fi ltration before entering into the measurement system. In accordance with the certifi cation requirements for safe operation of this product, the Condumax II must have, as a minimum, those components described in Section 2.7 and positioned as shown in Appendix A.1.
  • Page 20 Condumax II User’s Manual INSTALLATION The following points should be considered when installing the sample gas supply line: PTFE tape is recommended for pipe connections. Solvent based pipe thread sealant should not be used, as condensable components or contaminates can be leached during the curing period.
  • Page 21 Michell Instruments' recommendations and requirements in relation to the Condumax II are outlined below. Michell Instruments offers a range of sample conditioning systems which are designed to exceed these minimum requirements.

  • Page 22: Figure 5 Typical Phase Envelope For Northern Europe Natural Gas

    HC dew point is limited by a cooling depression range capability. In the case of the Condumax II, the lower range capability is >=50°C from the prevailing analyzer operating temperature. When the analyzer system is installed outside in hotter climate...

  • Page 23: Power Connection

    Condumax II User’s Manual INSTALLATION 2.5.2 Power Connection A single-phase AC power connection is required. The power supply can accommodate voltages from 90 to 260 V AC, 47/63 Hz. The unit requires a maximum of 125 W to function correctly.

  • Page 24: Analog And Digital Communications

    Analog and Digital Communications Two active 4-20 mA outputs and a Modbus RS485 digital interface (see Appendix B for details) are provided with the Condumax II. The 4-20 mA outputs can be set individually to represent one of the following: •...

  • Page 25: Condumax Ii Start-Up Purge Procedure

    Before start-up, ensure that all power and signal connections to the Condumax II are fully isolated. Ensure that all inlet & outlet gas connections to the Condumax II are correct and leak tight checked. Fully open the fl ow control valve of the fl owmeter on the hydrocarbon dew-point channel and, if also fi...

  • Page 26: Sample Gas Flows

    The enclosure cover may now be replaced. NOTE: Before any power or signal lines are connected the enclosure cover must be fully fi tted. After the enclosure cover has been refi tted the Condumax II is ready for immediately start-up. NOTE: If start-up is delayed then the purge procedure must be repeated.

  • Page 27: Sample Flow Alarms

    fl ow setting for a brief period in order to clear the alarm condition. NOTE: If the Condumax II main unit is going to be operating with signifi cantly different analysis pressures to those used during factory testing, then fi ne re-adjustment of the fl...

  • Page 28: Operation

    Measurement Phase The Condumax II can be set to function in one of 2 modes - Condensate Mode and Measurement Mode are mutually exclusive. One is the inverse of the other.

  • Page 29: Water Dew-Point Measurement

    Condumax II User’s Manual OPERATION During every measurement cycle, and based on the previous measurement, the optical surface temperature ramp rate is optimized to be at 0.05°C/sec at the point of hydrocarbon dew-point measurement. After the signal trip point has been reached, the system will re-enter the Recovery Phase, control the temperature of the optical surface to the set-point, adjust the signal level to 0.00% and count down to the next...

  • Page 30: Sensitivity Calibration

    Condumax II User’s Manual OPERATION As the detection principle of the Condumax II is essentially quantitative it can itself be utilized to produce a graphical representation akin to the LGR relationship that can then be used to judge the ‘trip point’ required for the specifi c gas under test. Refer to Section 3.3.3 on sensitivity calibration.

  • Page 31: Adjustment Of Measurement Sensitivity To User Defined Reference

    <0.1°C/sec (observed in the Status Page). Implement the harmonization of measurement sensitivity adjustment by returning the Condumax II to normal Measurement Mode and setting the Trip Point to the signal change mV value obtained in Condensate Mode.

  • Page 32: User Interface

    Condumax II User’s Manual OPERATION User Interface 3.4.1 Interface Controls Condumax II Hydrocarbon Dew-point Analyzer VFD Display -11.0 CHCdp 27.0 BarG -32.5 CWdp 69.0 BarG NEXT MEASUREMENT: 0m 11s Blue LEDs MENU SELECT MAIN Up/Down SELECT MENU/ Arrow Button MAIN...

  • Page 33: Select' Button

    Condumax II User’s Manual OPERATION 3.4.3 ‘SELECT’ Button SELECT Figure 11 ‘SELECT’ Button button is used to select or de-select a highlighted item in a menu list. SELECT 3.4.4 ‘MENU/MAIN’ Button MENU MAIN Figure 12 ‘MENU/MAIN’ Button button is used to toggle between the...

  • Page 34: Menu Structure

    Condumax II User’s Manual OPERATION Menu Structure The diagram below shows a map of the menu structure: MENU MAIN Press MENU/MAIN button to get back to Main Page from any location (unless instrument is Choices executing sensitivity calibration) Start Up...

  • Page 35: Main Page

    Condumax II User’s Manual OPERATION Main Page CHCdp psig CWdp psig NEXT MEASUREMENT: 7m 45s MAIN Page With Wdp Sensor Fitted Figure 14 CHCdp psig NEXT MEASUREMENT: 9m 5s Figure 15 MAIN Page Without Wdp Sensor Fitted page displays the measured parameters and the instrument’s operational MAIN status.

  • Page 36: Status

    Condumax II User’s Manual OPERATION Status Pages provide status and diagnostic information from the instrument. STATUS PAGES 1 and 2 3.8.1 Status Page 1 STATUS PAGE 1/2 MIRR TEMP 50.1 SIGNAL 0.00 OPTICS 9.10 COOLING 0.00 SOL DRIVE NEXT MEASUREMENT: 2m 11s...

  • Page 37: Status

    Condumax II User’s Manual OPERATION 3.8.2 Status Page 2 STATUS PAGE 2/2 WDP ALARM HCDP ALARM HCDP FLOW WDP FLOW INT TEMP 25.3 NEXT MEASUREMENT: 2m 6s Figure 18 STATUS Page 2 Water dew-point alarm status, will display either WDP ALARM...

  • Page 38: Logging Menu Page

    Condumax II User’s Manual OPERATION Logging Menu Page This page allows the viewing of the logged data or statistical information on the logged data. 3.9.1 Logged Data Page This page allows access to the previous measurement results made by the instrument.

  • Page 39: Statistics

    Condumax II User’s Manual OPERATION 3.9.2 Statistics These pages display the maximum, minimum and average values for each measured parameter for up to 150 previous measurement samples. re-sets the RESET LOG logging statistics. STATISTICS PAGE 1/4 HCDp Max -3.0 at 23:10 on 07/12 HCDp Min -21.2...

  • Page 40: Adjusting And Viewing System Variables

    Condumax II User’s Manual OPERATION 3.10 Adjusting and Viewing System Variables 3.10.1 Enter Password To safeguard against unauthorized adjustment of set-up parameters and variables, an entry lock is provided. The user must fi rst input the access code to enter the area.

  • Page 41: Variables

    Condumax II User’s Manual OPERATION 3.10.3 Variables Page 1 For more information on each variable refer to Appendix D.1. Variable Brief Description MODE Instrument mode, CONDENSATE MEASURE Hydrocarbon Condensation Trip Point (only available in TRIP POINT mode) MEASURE Optical Surface...

  • Page 42: Variables

    Condumax II User’s Manual OPERATION 3.10.6 Variables Page 4 For more information on each variable refer to Appendix D.4. Variable Brief Description INST ADDR Instrument network address THERMO O/S Thermocouple offset SET DEFAULT Resets instrument to default configuration Internal temperature set-point...

  • Page 43: Sensitivity Calibration

    Condumax II User’s Manual OPERATION 3.11 Sensitivity Calibration This is a sub-menu where the user can execute a Sensitivity Calibration procedure or view data measured during the last Sensitivity Calibration procedure. 3.11.1 Executing the Sensitivity Calibration Selecting displays the Sensitivity Calibration Temperature computed EXECUTE SENS CAL from the last hydrocarbon dew-point measurement.

  • Page 44: Water Dew-Point Sensor Information

    Duration that the sensor has been in active use Next Cal Next recommended calibration date of sensor Sensor S/N Serial number of sensor 3.13 Contact/About Information This page contains contact information about Michell Instruments. CONTACT/ABOUT MICHELL INSTRUMENTS WEB: WWW.MICHELL.COM E-MAIL: UK.INFO@MICHELL.COM...

  • Page 45: Maintenance

    Any loose or disturbed pipework or couplings must be leak tested. The design of the Condumax II sensor cell and measurement system is such that no specifi c routine maintenance is required. However, if a fault does occur with the system that is not covered within this manual please contact Michell Instruments (see contact information at www.michell.com) or your local representative.

  • Page 46: Enclosure Cover And User Interface

    Condumax II User’s Manual MAINTENANCE All of the procedures below can only be carried out by fi rst unscrewing the enclosure glass cover and removing the user interface assembly. Enclosure Cover and User Interface The enclosure cover is part of the fl ameproof protection for the enclosure and has IP66/ NEMA 4 rating.

  • Page 47: Inspection/Cleaning Of Hydrocarbon Sensor Cell Optical Surface

    Condumax II User’s Manual MAINTENANCE Inspection/Cleaning of Hydrocarbon Sensor Cell Optical Surface The power to the enclosure must be turned off before any work is carried out in the measurement system enclosure. Observe de-energize durations. If the sensor cell optical surface is badly contaminated or damaged or if there is uncertainty about its accuracy, then it should be replaced.

  • Page 48: Replacement Of The Hydrocarbon Sensor Cell Assembly

    Condumax II User’s Manual MAINTENANCE To ensure the full requirement of this product's safety certifi cate is maintained, a gas pressure test and appropriate leak check at 1.5x the max operating pressure must be carried out before the full product is re-energized.

  • Page 49: Replacement Of The Water Dew-Point Sensor

    Condumax II User’s Manual MAINTENANCE Replacement of the Water Dew-Point Sensor The power to the enclosure must be turned off before any work is carried out in the measurement system enclosure. Observe de-energize durations. To replace the water dew-point sensor, follow the instructions below: Isolate the incoming sample gas line by closing the sample inlet isolation valve and allow the system to depressurize.

  • Page 50: Troubleshooting

    Condumax II User’s Manual MAINTENANCE Troubleshooting 4.6.1 Error Messages If a system errors occur, an Error Message will appear at the bottom line of the MAIN page describing the problem. If more than one system error has occurred, the Error Messages associated with those faults will continually scroll in turn.

  • Page 51: Logged Error Codes

    At fi rst switch on of the Condumax II nothing will appear in the ERROR CODE column. When an error has occurred, but then cleared so that no outstanding errors exist, 0000 will then be logged continually.

  • Page 52: Ma1 Output Analyzer Fault Alarm

    Condumax II User’s Manual MAINTENANCE If more than one error has occurred, then the Error Codes will be added together. Examples: Error Code 0104 Error Code (HCdp pressure transmitter failure) 0100 plus Error Code ( No fl ow during the recovery phase)

  • Page 53: Heat-Pump Depression

    Condumax II User’s Manual MAINTENANCE 4.6.4 Heat-Pump Depression There may be circumstances when the performance of the heat-pump or heat-pump drive circuitry may be in question, i.e. when the heat-pump failure error message is observed. In this situation the heat-pump performance can be easily determined by using the Mode feature of the instrument.
  • Page 54 Condumax II User’s Manual APPENDIX A Appendix A Technical Specifi cations 97081 Issue 28.1, July 2018...

  • Page 55: Appendix A Technical Specifi Cations

    Condumax II User’s Manual APPENDIX A Appendix A Technical Specifi cations Hydrocarbon Dew-point Sensor DARK SPOT fixed sample analysis. Direct photo-detection of Measuring Technique hydrocarbon condensate at hydrocarbon dew-point temperature Stainless steel (AISI 316L grade) Viton O-ring sealed quartz glass ®...

  • Page 56: Mounting Drawing

    Condumax II User’s Manual APPENDIX A Modbus RTU RS485 @ 9600 baud rate Outputs Two 4-20 mA linear (non-isolated) outputs, user configurable for any combination of dew-point or pressure parameters Process and analyzer status via software register and display annotation...

  • Page 57: Flow Diagram

    Condumax II User’s Manual APPENDIX A Flow Diagram Michell Instruments...

  • Page 58: Wiring Hook-Up Diagram

    Condumax II User’s Manual APPENDIX A Wiring Hook-Up Diagram Terminals are marked: L = Live N = Neutral E = Earth/Ground COMMS connector Foil screens Power supply fold back L E N connector to gland Earth/Ground Barrier gland Braided screen...
  • Page 59 Condumax II User’s Manual APPENDIX B Appendix B Modbus RTU Communications Michell Instruments...

  • Page 60: Appendix B Modbus Rtu Communications

    Response From Slave Modbus RTU Basics The physical connection from the master to the Condumax II uses 2-wire RS485 plus a ground connection, whereby data lines A, B and ground are connected to a communication connector within the instrument. The serial port protocol is as follows:...

  • Page 61: Register Map

    Condumax II User’s Manual APPENDIX B Register Map The following two tables describe the instruments’ registers with their address location, Modbus function and the number format. The following table provides more details on the formatting of each parameter in the register map.
  • Page 62 Condumax II User’s Manual APPENDIX B Address Modbus Read/ Default Register Function function Write Value Configuration Internal temp set-point 07D0H Sensitivity progress 0 to 10 ERROR MASK 0000H Signal gain 1000 Sensitivity cal. temperature Heat time Cool temperature 002D Heat power >= +10 002E Heat power >...
  • Page 63 Condumax II User’s Manual APPENDIX B Address Modbus Read/ Default Register Function function Write Value Configuration Wdp pressure max Occurred @ day (val 1) + month (val 2) Occurred @ hour (val 1) + min (val 2) Wdp pressure min...
  • Page 64 Condumax II User’s Manual APPENDIX C Appendix C Software 97081 Issue 28.1, July 2018...

  • Page 65: Appendix C Software

    Appendix C Software Software is available for the Condumax II to provide full remote control of up to 31 instruments, which has access to all readable and write-able registers as described in Appendix B, along with charting and data logging facilities.

  • Page 66: Appendix D Variables

    Condumax II User’s Manual APPENDIX D Appendix D Variables Pages 97081 Issue 28.1, July 2018...

  • Page 67: Variables

    Condumax II User’s Manual APPENDIX D Appendix D Variables Pages Variables Page 1 Variable: MODE Adjustable Range/Options: MEASURE or CNDSATE (default: MEASURE) Description: When is selected, the instrument is in normal measurement MEASURE mode. is an abbreviation for . In this mode the...
  • Page 68 ‘ ’ message will be displayed at the bottom HCdp below cooling limit of the display. In such cases the Condumax II confi rms that the HCdp is at an exceptionally low level, lower than the setting. Normal MIN COOL...

  • Page 69: Variables

    Condumax II User’s Manual APPENDIX D Variables Page 2 Variable: OUTPUT1 Adjustable Range/Options: HCdp ((x10)mV in condensate mode), Wdp, HCpr, Wpr, Wdp Temp (sample gas temperature), Moisture Content in Natural Gas (dependent upon Wdp CHANNEL selection - refer to Appendix D.5) Description: Output confi...

  • Page 70: Variables

    Condumax II User’s Manual APPENDIX D Variables Page 3 Variable: Wdp ALARM Adjustable Range/Options: -100 to +100°C (default 0°C) Description: Water dew-point alarm point. An error will be fl agged on the front panel display page or page if the alarm level is exceeded. See...

  • Page 71: Variables

    Variable: INST ADDR Adjustable Range/Options: 0-31 Description: Unique instrument address for networking. This address is used by the MODBUS protocol to specify the location of the Condumax II instrument in the network. Variable: THERMO O/S Adjustable Range/Options: -10 to +10°C Description: A value that is used to trim out the tolerance of the thermocouple cold junction compensation circuit - factory setting.
  • Page 72 Condumax II User’s Manual APPENDIX D Variable: INT TEMP SP Adjustable Range/Options: 0 to +50°C (default +20°C) Description: Sets the set-point for the internal heater. Variable: HEAT TEMP Adjustable Range/Options: -20 to +70°C (default +50°C) Description: During a recovery cycle, the mirror surface temperature will be heated...

  • Page 73: Variables

    Condumax II User’s Manual APPENDIX D Variables Page 5 Variable: HEAT RAMP Adjustable Range/Options: 1-5 (mins) (default 3 mins) Description: The ramp time to reach the recovery temperature. Variable: Adjustable Range/Options: NONE (default 0.0) Description: Factory confi guration setting. Do not adjust without consultation with Michell Instruments.
  • Page 74 Condumax II User’s Manual APPENDIX E Appendix E Modbus RTU Details 97081 Issue 28.1, July 2018...

  • Page 75: Appendix E Modbus Rtu Details

    APPENDIX E Condumax II User’s Manual Appendix E Modbus RTU Details Message Framing FUNCTION START ADDRESS DATA CODE 3.5t 1 byte 1 byte n x bytes 2 bytes 3.5t Start and End The message begins and ends with a silent delay of 3.5 character times at the baud rate of the network.

  • Page 76: Figure 29 Reading Holding Registers State Diagram

    Condumax II User’s Manual APPENDIX E Implemented Functions Read Holding Registers This function code is used to read the contents of a contiguous block of holding registers where the master specifi es the starting address and the number of registers to be read.
  • Page 77 APPENDIX E Condumax II User’s Manual The table below is an example of a message sent by the master, to read the signal level (register 6) and the phase time left (register 7). The message shows a master addressing a Condumax with a slave address of 01H and a Modbus function of 03H, that informs the Condumax that it wishes to read two registers starting from address 06H, where bytes 3 &...

  • Page 78: Figure 30 Write Single Register State Diagram

    Condumax II User’s Manual APPENDIX E Write to Single Register This function code is used to write a 16 bit value into a single register, and the master specifi es the address and the value to be written. The fi gure below shows the state diagram of how the message is processed with the exceptions that may be raised.
  • Page 79 APPENDIX E Condumax II User’s Manual The table below shows the data bytes in a write to register message. Bytes 1 to 4 contain the address of the Condumax, Modbus function, starting register address and the data value to be written. In this example, a master sends FC18H, to address 0015H, to a Condumax with an address of 01H.

  • Page 80: Exceptions

    Condumax II User’s Manual APPENDIX E Exceptions A message request from the master will raise an exception response from the slave (Condumax) if: • the function code is unsupported • the register quantity > 127 (0x007D) • the register address is invalid •...
  • Page 81 Condumax II User’s Manual APPENDIX F Appendix F Number Formats Michell Instruments...

  • Page 82: Appendix F Number Formats

    APPENDIX F Condumax II User’s Manual Appendix F Number Formats Format A Value Sign bit = 1 for -ve values (signed int) 7FFF = 327.67 8000 = -327.68 The value in bits (15 to 0) + 1 is divided by 100 to give 0.01 resolution.
  • Page 83 Condumax II User’s Manual APPENDIX F Format C Error Conditions Bit 0 HCdp below cooling limit, also for sensitivity calibration failure Bit 1 Unable to adjust optics Bit 2 No fl ow during recovery phase Bit 3 Flow during Measurement Phase...
  • Page 84 APPENDIX F Condumax II User’s Manual Format E Units Command r/w r/w r/w r/w r/w Pressure range 0 = psig 1 = barg 2 = KPa °C/F 0 = °C Moisture Content bits 0 & 1: 00 = DP, 01 = LBMMSCF, 10 = PPMV(NG), 11 = mgm (NG) ‘1’...
  • Page 85 Condumax II User’s Manual APPENDIX F Format I   The values for Hi & Lo are in BCD, therefore 10H = 10, 58H = 58 and 09H = 9 etc… Bits 15 to 12 in the Wdp batch number (001D) are allowed to have a value between A to F, otherwise they are invalid.
  • Page 86 APPENDIX F Condumax II User’s Manual Examples of fl oating point to HEX are shown below. +10.3 sign bit = 0 Exponent = 3, therefore exponent fi eld = 127 + 3 = 130, and bits 30 to 23 = 1000 0010 The mantissa = 1.2875 which in binary representation = 1010 0100 1100 1100 1100 1101...
  • Page 87 APPENDIX G Condumax II User’s Manual Appendix G Hazardous Area Certifi cation Michell Instruments...

  • Page 88: Appendix G Hazardous Area Certifi Cation

    Condumax User's Manual APPENDIX G APPENDIX H Condumax II User’s Manual Appendix G Hazardous Area Certifi cation The Condumax is certifi ed compliant to the ATEX Directive (2014/34/EU) and IECEx for use within Zone 1 and Zone 2 Hazardous Areas and has been assessed so by Element Materials Technology Ltd (Notifi...

  • Page 89: Special Conditions Of Use

    Maintenance and servicing of the product must only be carried out by suitably trained personnel or returned to an approved Michell Instruments’ Service Center. Flame paths are not intended to be repaired.
  • Page 90 APPENDIX H Condumax II User’s Manual Appendix H Quality, Recycling & Warranty Information 97081 Issue 28.1, July 2018...

  • Page 91: Appendix H Quality, Recycling, Compliance & Warranty Information

    Condumax II User’s Manual Appendix H Quality, Recycling, Compliance & Warranty Information Michell Instruments is dedicated to complying to all relevant legislation and directives. Full information can be found on our website at: www.michell.com/compliance This page contains information on the following directives: •...
  • Page 92 APPENDIX I Condumax II User’s Manual Appendix I Analyzer Return Document & Decontamination Declaration 97081 Issue 28.1, July 2018...

  • Page 93: Appendix I Analyzer Return Document & Decontamination Declaration

    Has the equipment been cleaned and decontaminated? NOT NECESSARY Michell Instruments will not accept instruments that have been exposed to toxins, radio-activity or bio-hazardous Work will not be carried out on any unit that does not have a completed decontamination declaration.
  • Page 94 Condumax II User’s Manual NOTES: 97081 Issue 28.1, July 2018...
  • Page 96 http://www.michell.com...

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