PST Michell Instruments S8000 -100 User Manual

PST Michell Instruments S8000 -100 User Manual

Chilled mirror hygrometer
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S8000 -100
Chilled Mirror Hygrometer
User Manual
97606 Issue 1
June 2021
nbn Austria GmbH

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Summary of Contents for PST Michell Instruments S8000 -100

  • Page 1 S8000 -100 Chilled Mirror Hygrometer User Manual 97606 Issue 1 June 2021 nbn Austria GmbH...
  • Page 2 Please fill out the form(s) below for each instrument that has been purchased. Use this information when contacting Michell Instruments for service purposes. Product Name Order Code Serial Number Invoice Date Installation Location Tag Number Product Name Order Code Serial Number Invoice Date Installation Location Tag Number...
  • Page 3 S8000 -100 For Michell Instruments' contact information please go to www.michell.com © 2021 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

    S8000 -100 User Manual Contents Safety ..........................vii Electrical Safety ......................vii Pressure Safety ......................vii Toxic Materials ......................vii Repair and Maintenance ....................vii Calibration ........................vii Safety Conformity .......................vii Abbreviations ........................viii Warnings .......................... viii INTRODUCTION ....................1 Operating Principle ..................... 1 INSTALLATION ....................3 Safety ........................ 3 Unpacking the Instrument ...................
  • Page 5 S8000 -100 User Manual User Interface ....................22 3.5.1 Main Screen ....................22 3.5.2 Customizable Readouts................23 3.5.2.1 Full-Screen Mode .................. 23 3.5.3 Operational Status Display ................24 3.5.4 Cooler Setup ....................25 3.5.5 Setup Menu Screen ..................26 3.5.5.1 Numeric Input ..................
  • Page 6 S8000 -100 User Manual Figures Figure 1 Operating Principle ..................2 Figure 2 Transit Bolt Locations ..................4 Figure 3 Front Panel ....................6 Figure 4 Rear Panel ....................7 Figure 5 Microscope Installation Procedure ..............9 Figure 6 Alarm and Analog Output Connection ............10 Figure 7 USB Port Connection .................12 Figure 8...
  • Page 7: Safety

    S8000 -100 User Manual Safety The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual. The user must not use this equipment for any other purpose than that stated. Do not apply values greater than the maximum value stated. This manual contains operating and safety instructions, which must be followed to ensure the safe operation and to maintain the equipment in a safe condition.
  • Page 8: Abbreviations

    S8000 -100 User Manual Abbreviations The following abbreviations are used in this manual: barg bar gauge (100 kPa or 0.987 atm) ºC degrees Celsius ºF degrees Fahrenheit direct current grams inch(es) µm micrometer m/sec meters per second milliampere millimetres megapascal Nl/min normal liters per minute Newton meter...
  • Page 9: Introduction

    S8000 -100 User Manual INTRODUCTION INTRODUCTION The S8000 -100 is a high-precision laboratory reference instrument for the measurement of moisture content in air and other gases. Relative humidity and other calculated parameters based on dew point, pressure and temperature of the sample gas can also be displayed.
  • Page 10: Figure 1 Operating Principle

    S8000 -100 User Manual INTRODUCTION The ‘hot’ side of the Thermo-electric cooler is coupled to an auxiliary cooling system through a thermal mass (13), which smooths its response. The cooling system removes heat from the hot side of the Thermo-electric cooler, by cooling it to an appropriate temperature.
  • Page 11: Installation

    S8000 -100 User Manual INSTALLATION INSTALLATION Safety It is essential that the installation of the electrical and gas supplies to this instrument be undertaken by competent personnel. Unpacking the Instrument The S8000 -100 is a heavy instrument and should be unpacked by two people. Carefully open the crate and check for any signs of transit damage before touching the instrument.
  • Page 12: Transit Bolts

    S8000 -100 User Manual INSTALLATION Transit Bolts WARNING: The sensor assembly is equipped with transit bolts to prevent vibration damage during shipping. These must be released prior to operation. To release: Open enclosure door. Insert 5mm Allen key through each access hole in the insulation in turn (see Figure 2).
  • Page 13: Operating Requirements

    S8000 -100 User Manual INSTALLATION Operating Requirements 2.4.1 Environmental Requirements It is important to operate the S8000 -100 within the following environmental conditions: Minimum Operating Temperature 5°C Maximum Operating Temperature 30°C Maximum Relative Humidity 2.4.2 Electrical Requirements The S8000 -100 requires the following electrical supply: •...
  • Page 14: Front Panel

    S8000 -100 User Manual INSTALLATION 2.4.2.1 Front Panel Figure 3 Front Panel Name Description Takes an SD card used to store logged data SD Card Slot See Section 3.5.8 for more details on how to use the logging features Displays measured values and enables the user to control the Touch Screen operation of the instrument Display...
  • Page 15: Rear Panel Connections

    S8000 -100 User Manual INSTALLATION 2.4.2.2 Rear Panel Connections Figure 4 Rear Panel No. Name Description ¼” Swagelok Connection for venting sample gas to atmosphere or vent line once it has passed through the instrument Gas Outlet Connection for supplying the instrument with sample gas, usually ¼”...
  • Page 16: Power Supply Input

    S8000 -100 User Manual INSTALLATION These tasks should only be undertaken by competent personnel. All the connections to the rear panel are electrical connections. Exercise due caution, particularly when connecting to DANGER external alarm circuits which could be at high potential. Electric Shock Risk Connections to the rear panel of the instrument are explained in the following sections.
  • Page 17: Microscope Installation

    S8000 -100 User Manual INSTALLATION 2.4.4 Microscope installation To prevent any disturbance to the frost formation on the mirror, when required the microscope should be installed prior to starting a measurement. The microscope lens cover should be placed over the eyepiece when the mirror is not being observed. Remove the gas block key from the enclosure door by rotating it until the retaining lugs align with the slots in the panel.
  • Page 18: Analog Output Connections

    S8000 -100 User Manual INSTALLATION 2.4.5 Analog Output Connections The two analog outputs can be configured to represent any of the directly measured or calculated output parameters. They are provided as 2-wire signals from a 6-way connector located on the rear panel of the instrument . Each of these outputs provide a current loop signal (4...20 mA or 0...20 mA).
  • Page 19: Alarm Output Connections

    S8000 -100 User Manual INSTALLATION 2.4.6 Alarm Output Connections Two alarm outputs are provided from a terminal block, located on the rear panel of the instrument, as two pairs of potential free, change-over relay contacts. These are PROCESS FAULT designated as a alarm and a alarm.
  • Page 20: Remote Pt100 Connections

    S8000 -100 User Manual INSTALLATION 2.4.8 Remote Pt100 connections External connections are provided to allow direct impedance measurement of the mirror Pt100 by an external device. The connections are as follows: Sense Supply Note that during DCC cycles, the instrument electronics will temporarily switch back to Internal monitoring.
  • Page 21: Ethernet/Rs232/Rs485 Port (Optional)

    S8000 -100 User Manual INSTALLATION 2.4.10 Ethernet/RS232/RS485 Port (optional) The instrument features an optional additional digital communication point. If Ethernet is selected, then an RJ45 socket is present. The protocol used is Modbus TCP. Figure 8 Ethernet Port If RS232 or RS485 are selected, then a standard 9-pin D-sub connector is fitted. The communications protocol used is Modbus RTU.
  • Page 22: Operation

    S8000 -100 User Manual OPERATION OPERATION As supplied, the S8000 -100 is ready for operation and a set of default parameters has been installed. This section describes both the general operation of the instrument and the method of setting it up and changing the default parameters, should this become necessary.
  • Page 23: Operational Functions

    S8000 -100 User Manual OPERATION Operational Functions 3.2.1 Operating Cycle The default parameters set up for the instrument define an operating cycle, see Figure 10. Figure 10 Typical Operating Cycle At initial switch-on, the instrument enters a DCC cycle for 2 minutes. By default, this heats the mirror 20 °C (36 °F) above the previously measured value –...
  • Page 24: Operating Guide

    S8000 -100 User Manual OPERATION Operating Guide 3.3.1 Automatic Mode 3.3.1.1 Description When the instrument is switched on, the cooler set-point will initially be +20 °C (+68 °F). The instrument will initialize by running a DCC cycle. After the DCC cycle is complete, the system will cool the mirror.
  • Page 25: Operating Practice

    S8000 -100 User Manual OPERATION 3.3.1.2 Operating Practice Avoid situations in your operating cycle where a dew point is introduced to the instrument which is greater than the current sensor temperature. Precautions should be taken to either gradually increase the sample humidity, or manually change the cooler temperature in advance.
  • Page 26: Manual Mode

    S8000 -100 User Manual OPERATION Manual Mode 3.4.1 Description When the instrument is switched on, the cooler set-point will initially be +20 °C (+68 °F). The user is responsible for selecting the appropriate sensor temperature set- point via the Cooler Setup Page. 3.4.1.1 Operating Practice The S8000 -100 will only be capable of measuring dew points down to -50 °C (-58 °F) with the cooler temperature set to +20 °C (+68 °F).
  • Page 27: Shutdown Procedure

    S8000 -100 User Manual OPERATION iii. Switch the instrument to Standby Set the sensor temperature to -50 °C (-58 °F) and wait for it to stabilize. Switch the instrument to Operate. The instrument will cool the mirror below the dew point. Frost will then begin to form on the mirror, after which the mirror temperature will increase to that of the dew point.
  • Page 28: Dcc - Dynamic Contamination Control

    S8000 -100 User Manual OPERATION 3.4.3 DCC – Dynamic Contamination Control Dynamic Contamination Control ( ) is a system designed to compensate for the loss of measurement accuracy which results from mirror surface contamination. During the process, the mirror is heated to a default temperature of 20 °C (36 °F) above the dew point to remove the contamination that has formed during measurement.
  • Page 29: Pressure Input

    S8000 -100 User Manual OPERATION 3.4.5 Pressure Input The S8000 -100 is fitted with an internal pressure sensor that measures the sample gas pressure. The pressure measured by this sensor is then used internally as the basis for calculation of all of the pressure-related parameters, ppm , ppm , g/m and g/kg.
  • Page 30: User Interface

    S8000 -100 User Manual OPERATION User Interface The S8000 -100 features a 5.7” color touch-screen display. Initialising When the instrument is switched on, an overlay will be shown while the menu system loads. After the menu system has loaded, the Main Screen will show. 3.5.1 Main Screen Figure 11...
  • Page 31: Customizable Readouts

    S8000 -100 User Manual OPERATION Initiates or cancels a DCC. See Section 3.4.3 for a detailed DCC Button explanation of the DCC function. See Section 3.5.7 for DCC setup parameters. MAXCOOL Initiates or cancels mode. See Section 3.4.4 MAXCOOL Button MAXCOOL for a detailed explanation of the function.
  • Page 32: Operational Status Display

    S8000 -100 User Manual OPERATION 3.5.3 Operational Status Display The Operational Status display includes the following: Reports current operational mode. Mode Measure, Standby, DCC, Hold Maxcool Flood This will either be Shows the time (in Hours: Minutes: Seconds) remaining until the Next Mode transition to the next mode of operation.
  • Page 33: Cooler Setup

    S8000 -100 User Manual OPERATION 3.5.4 Cooler Setup Sensor Temp readout The Cooler Setup screen is accessed by touching on the Main Screen. Refer to Section 3.4 for detailed information on the operation of the sensor cooling system. System Temperature: Input out of range: System Shutdown: Figure 12...
  • Page 34: Setup Menu Screen

    S8000 -100 User Manual OPERATION 3.5.5 Setup Menu Screen The Setup Menu is used to adjust the operational parameters of the instrument, change the display setup and start or stop the data-logging feature. Initially, when the Setup Menu Screen is opened, a set of labelled icons is displayed. Touching one of these icons will take you to the appropriate submenu.
  • Page 35: Numeric Input

    S8000 -100 User Manual OPERATION 3.5.5.1 Numeric Input When entering a numeric value, a virtual keypad will be displayed. Figure 14 Virtual Keyboard The allowable range will initially be shown at the top of the keypad, e.g. 0  50 Some parameters can be disabled by entering a value of 0;...
  • Page 36: Menu Structure

    S8000 -100 User Manual OPERATION 3.5.6 Menu Structure LOGGING OUTPUTS ALARM DISPLAY CLOCK INPUTS COMMS EXTENDED SETTINGS Type Interval Output Type Resolution Date Temperature Modbus PRT Mode Select input source Setpoint Parameter Stability Time Address Flood Output Value Recovery Mode Setpoint Temp Unit IP Address...
  • Page 37: Dcc

    S8000 -100 User Manual OPERATION 3.5.7 Figure 16 DCC Screen Parameter Description DCC heating temperature can either be relative to last measured dew point or an absolute temperature. Actual temperature or Δ is defined Type by ‘Setpoint’. Available Input: Relative, Absolute Mirror heating temperature during DCC, either absolute or relative to Setpoint last measured dew point.
  • Page 38: Logging

    S8000 -100 User Manual OPERATION 3.5.8 LOGGING Figure 17 Logging Screen Parameter Description Changes the interval at which data is recorded Interval Input format: mm:ss – Limits: 00:05...10:00 Indicates status of inserted SD card: No SD Card inserted Ready to log Initialising card SD status indicator...
  • Page 39: Outputs

    S8000 -100 User Manual OPERATION 3.5.9 OUTPUTS Figure 18 Outputs Screen Parameter Description Output Selector Selects the output to be adjusted Arrows Determines the mA output range Output Type Available Input: 4...20 mA/0...20 mA Assigns the chosen calculated or measured parameter to this output channel Available Input: Dew Point, Temperature, Pressure, % Relative Parameter...
  • Page 40: Alarm

    S8000 -100 User Manual OPERATION 3.5.10 ALARM Figure 19 Alarm Screen Parameter Description Sets the trip criteria for the process alarm. Type Available Input: Over, Under, In. Band, Out. Band, Off Sets the parameter associated with the process alarm. Available Input: Dew Point, Temperature, Pressure, % Relative Parameter Humidity, g/m , g/kg, ppm...
  • Page 41: Display

    S8000 -100 User Manual OPERATION 3.5.11 DISPLAY Figure 20 Display Screen Parameter Description Changes the number of decimal places for all displayed parameters. Resolution Available Input: 1 DP, 2 DP Measurement unit for temperature values Temperature Unit Available Input: ºC, ºF Measurement unit for pressure values Pressure Unit Available Input: kPa, psig, psia, barg, bara...
  • Page 42: Clock

    S8000 -100 User Manual OPERATION 3.5.12 CLOCK Figure 21 Clock Screen Parameter Description Date Current date Time Current time Table 12 Clock Parameters 3.5.13 Inputs Figure 22 Inputs Screen Parameter Description Changes between temperature input from external Source (Temperature Input) Pt100 or a fixed value.
  • Page 43: Comms

    S8000 -100 User Manual OPERATION 3.5.14 Comms Figure 23 Comms Screen Parameter Description Modbus Address Sets the Modbus slave address Setup Access the TCP/IP Network Settings page Table 14 Comms Parameters 3.5.15 Network Settings Figure 24 Network Settings Screen This page is accessible when using an S8000 -100 that is fitted with an Ethernet module. Parameter Description IP Address...
  • Page 44: Extended Settings

    S8000 -100 User Manual WARNINGS AND FAULTS 3.5.16 Extended Settings Figure 25 Extended Settings Screen Parameter Description If required for the calibration process or for external monitoring, the internal Pt100 can be made available for external connection via the 4 banana sockets on the back of the instrument PRT Mode Please note that this will disable the internal Pt100...
  • Page 45: Warnings And Faults

    S8000 -100 User Manual WARNINGS AND FAULTS WARNINGS AND FAULTS The S8000 -100 contains a comprehensive self-diagnosis system to alert the user whenever there is an issue which could affect the measurement. These alerts are divided into two categories: Warnings: A problem which is not currently affecting the measurement but requires attention.
  • Page 46: Fault Codes

    S8000 -100 User Manual WARNINGS AND FAULTS Fault Codes Name Description Chilled Mirror sensor Pt100 resistance out of Mirror PRT Failure range Remote Temperature probe Pt100 Ambient PRT Failure resistance out of range Chiller PRT Failure Cold finger Pt100 resistance out of range RESERVED Mirror temperature too high Mirror temperature exceeded 130 °C...
  • Page 47: Maintenance

    S8000 -100 User Manual MAINTENANCE MAINTENANCE Sensor Mirror Cleaning The mirror should be cleaned on a regular basis, and prior to any critical measurements. The procedure is as follows: Ensure the instrument is in Standby mode and the sensor temperature is at +20 °C (+68 °F).
  • Page 48 S8000 -100 User Manual MAINTENANCE Remove the gas block key from the sensor enclosure door by rotating it until the retaining lugs align with the slots in the panel. The key is then inserted into the collar of the gas block window. A 5mm Allen key can be used to loosen and remove the window from the sensor.
  • Page 49: Fuse Replacement

    S8000 -100 User Manual MAINTENANCE Fuse Replacement If the instrument fails to operate after it has been connected to an AC power supply (85... 264 V AC, 47/63 Hz) and switched on, proceed as follows: If the power supply cable is fitted with a fused plug, switch off the power supply, remove the plug, check and, if necessary, replace the fuse.
  • Page 50: Application Software

    S8000 -100 User Manual APPLICATION SOFTWARE APPLICATION SOFTWARE Application software which can be used for remote monitoring and data logging is available on the Michell Instruments website. A help file is included within the software for guidance on operation. 97606 Issue 1, June 2021...
  • Page 51: Appendix A Technical Specifications

    S8000 -100 User Manual APPENDIX A Appendix A Technical Specifications Michell Instruments...
  • Page 52 S8000 -100 User Manual APPENDIX A Appendix A Technical Specifications Dew-Point Sensor Measurement Range -100...+20 °C (-148...+68 °F) frost/dew point Measurement Accuracy* ±0.1 °C (±0.18 °F) Reproducibility at -100 °Cfp ±0.15 °C (±0.27 °F) (-148 °Ffp) Stability at -100 °Cfp ±0.05 °C (±0.09 °F) (-148 °Ffp) <2 hrs to ±0.25 °C (±0.45 °F) stability @ -90 °Cfp (-130 °Ffp)
  • Page 53: Dimensions

    S8000 -100 User Manual APPENDIX A Mechanical Specification Dimensions (W x H x D) 440 mm x 185 mm x 515 mm (17.32" x 7.28" x 20.28") Weight 22 kg (48.5 lb) Inlet: ¼” VCR Sample gas connections Outlet: ¼” Swagelok tube General Optional Remote 4-wire Pt100, 1/10 DIN class B, 2m cable...
  • Page 54: Appendix B Modbus Register Map

    S8000 -100 User Manual APPENDIX B Appendix B Modbus Register Map 97606 Issue 1, June 2021...
  • Page 55 S8000 -100 User Manual APPENDIX B Appendix B Modbus Register Map Register Types Type Description uint16 unsigned 16 bit value uint32 unsigned 32 bit value over two registers Register names ending with _MS contain the upper 16 bits Register names ending with _LS contain the lower 16 bits flags unsigned 16 bit value where each bit represents a flag, value can be a combination of flags float...
  • Page 56 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default uint16 PRESSURE_UNIT 0 = PSIG 1 = PSIA 2 = BARG 3 = BARA 4 = KPA uint16 DECIMAL_PLACES Instrument Status uint16 OPERATING_MODE 0 = NO_CHANGE 1 = SYSTEM_FAILURE 2 = STANDBY 3 = MEASURE...
  • Page 57 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default Additional Operating Values uint16 LOGGING_STATUS 0 = Not Fitted 1 = No Card 2 = Ready 3 = Logging 4 = Writing 5 = Mount Error 6 = Write Error 7 = Mounting 8 = Write Protected...
  • Page 58 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default R|W|F boolean RH_WMO 0 = off 1 = on R|W|F boolean _ON_WET 0 = off (dry) 1 = on (wet) R|W|F float MOL_WEIGHT_MS 999999.9 28.9645 R|W|F MOL_WEIGHT_LS...
  • Page 59 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default User configuration – Analog Output Settings R|W|F uint16 ANALOG_1_TYPE 0 = 0-20mA 1 = 4-20mA 2 = 0-1V R|W|F uint16 ANALOG_1_PARAMETER 0 = Dewpoint 1 = Temperature 2 = Pressure 3 = %rh...
  • Page 60 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default User configuration – Process Alarm Settings R|W|F uint16 PROCESS_ALARM_PARAMETER 0 = Dewpoint 1 = Temperature 2 = Pressure 3 = %rh 4 = Water content: ppm 5 = Water content: ppm 6 = Mixing ratio 7 = Absolute humidity...
  • Page 61 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default User configuration – RTC uint16 RTC_YEAR uint16 RTC_MONTH uint16 RTC_DAY uint16 RTC_HOURS uint16 RTC_MINUTES User configuration – Display Parameters R|W|F uint16 LANGUAGE 0 = English 1 = German 2 = Spanish 3 = French...
  • Page 62 S8000 -100 User Manual APPENDIX B Address Access Data Type Register Map Definition Max. Min. Default DCC_REFLECTED_LS uint32 DCC_SCATTERED_MS 16777215 DCC_SCATTERED_LS float DCC_RATIO_MS -100 DCC_RATIO_LS uint32 CLEAN_REFLECTED_MS 16777215 CLEAN_REFLECTED_LS uint32 CLEAN_SCATTERED_MS 16777215 CLEAN_SCATTERED_LS uint16 CLEAN_DRIVE_LEVEL 65535 User configuration – Feature Unlock uint32 SECURITY_CODE_MS 4294967295...
  • Page 63: Appendix C Quality, Recycling & Warranty Information

    S8000 -100 User Manual APPENDIX C Appendix C Quality, Recycling & Warranty Information Michell Instruments...
  • Page 64 S8000 -100 User Manual APPENDIX C Appendix C Quality, Recycling & 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 65: Appendix D Return Document & Decontamination Declaration

    S8000 -100 User Manual APPENDIX D Appendix D Return Document & Decontamination Declaration Michell Instruments...
  • Page 66 S8000 -100 User Manual APPENDIX D Appendix D Return Document & Decontamination Declaration Decontamination Certificate IMPORTANT NOTE: Please complete this form prior to this instrument, or any components, leaving your site and being returned to us, or, where applicable, prior to any work being carried out by a Michell engineer at your site.
  • Page 67 S8000 -100 User Manual Notes Michell Instruments...
  • Page 68 www.ProcessSensing.com http://www.michell.com Aufgrund laufender Weiterentwicklungen sind Änderungen der Spezifikationen vorbehalten. Alle Angaben vorbehaltlich Satz- und Druckfehler. nbn Austria GmbH Riesstraße 146, 8010 Graz +43 316 40 28 05 nbn@nbn.at | www.nbn.at...

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