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Ametek Land LMG MkII User Manual

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LMG MkII
USER GUIDE
PUBLICATION N
812471
O
LANGUAGE: ENGLISH
Landmark Graphic MkII Signal Processor
i
Q U A L I T Y C U S T O M E R S O L U T I O N S

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  • Page 1 LMG MkII USER GUIDE PUBLICATION N 812471 LANGUAGE: ENGLISH Landmark Graphic MkII Signal Processor Q U A L I T Y C U S T O M E R S O L U T I O N S...
  • Page 2 Observe precautions for handling electrostatic discharge sensitive devices. Equipment Operation Use of this instrument in a manner not specified by AMETEK Land may be hazardous. Read and understand the user documentation supplied before installing and operating the equipment. The safety of any system incorporating this equipment is the responsibility of the assembler.
  • Page 3 This manual is provided as an aid to owners of AMETEK Land’s products and contains information proprietary to AMETEK Land. This manual may not, in whole or part, be copied, or reproduced without the expressed written consent of AMETEK Land.

  • Page 4: Table Of Contents

    LMG MkII Signal Processor Contents Introduction About this Guide About the Processor 1.3 Specification 1.4 Unpacking the Processor Installing the Processor 2.1 Installing the Processor in a Panel 2.2 Electrical Connections 2.3 Cable Connector Assembly 2-10 2.4 Fitting an I/O card 2-11 Using the Processor 3.1 Getting Started (accessing the menu system) 3.2 Language Selection 3.3 About the Channel Configuration Menu 3.4 Adjusting items in the Channel Configuration Menu 3.5 Using the ‘Quick’ Buttons 3.6 Thermometer Type 3.7 Emissivity...
  • Page 5 Signal Processor LMG MkII Contents (Continued...) External I/O Maths Functions 6.1 Ext I/O Maths Function Card Installation Instructions 6.2 Maths Card Electrical Connections 6.3 Maths Functions 6.4 Maths Function Options 6.5 Alarm and Current Output Configuration 6-14 6.6 Typical Maths Function Applications 6-19 Maintenance 7.1 Available Spares 7.2 USB Functions Upgrading from LMG MkI to LMG MkII 8.1 Upgrade Procedure 8.2 Differences & Similarities...

  • Page 6: Introduction

    INTRODUCTION...

  • Page 7: About This Guide

    Signal Processor LMG MkII Introduction 1.1 About this Guide This guide gives you all the information necessary for you to safely install and operate a Landmark Graphic MkII signal processor (LMG MkII). It covers the electrical and mechanical installation, touchscreen displays and menu system, explains the signal processing and mathematical functionality available, and details the serial communications protocol. There is also a section on upgrading from a LAND System 4 Landmark Graphic Processor (LMG). Electronic copies of this User Guide can be obtained from the LAND website www.ametek-land.com. 1.2 About the Processor The LMG MkII signal processor is designed to be used in conjunction with AMETEK Land infrared thermometers. It has been designed as an upgrade from an original LMG and contains many of the same features. The processor features include: • Large, clear, bright full colour LCD touchscreen with wide viewing angle • Easy to use configuration menu system, with security code, context- sensitive help display and ‘Quick Key’ selection of the most commonly changed parameters • Language choice for the display text • Multi-channel for use with up to four connected thermometers • A choice of time function processing options for each thermometer input • Current and voltage retransmission output for SCADA connections •...
  • Page 8 LMG MkII Signal Processor 1.3 Specification Model Landmark Graphic Accuracy ±0.12 % of reading Stability (Temp) 0.01 % of span /° Discrimination 0.015 % of full scale Display LED lit, 800 x 480 pixels Display update 0.5 s Text, 0.1 s Graphics Screens Numeric, line chart, deviation chart, 4 channel bar graph, 4 channel deviation bar graph Line/Deviation chart ranges 1 ° steps, 100 ° min span, setable Bar graph ranges 1 ° steps, 100 ° min span, setable Time span 1, 3, 6, 12, 30, 60, 90, 270 mins User label...

  • Page 9: Unpacking The Processor

    Signal Processor LMG MkII 1.4 Unpacking the Processor The package containing the processor will contain the following items: • Landmark Graphic MkII Processor • 7-way plug* and cover (including 2 screws and a clamp bar) for connection to the Thermometer • 6-way plug* for Alarm output connection • 5-way plug* and cover (including 2 screws and a clamp bar) for Retransmission output connection • 2-way plug* for Command input connection • 3-way plug* for 24 V dc power • DIN Rail-mounted Power Supply 24 V dc output, 100 to 240 V ac input • One 2.5 mm hexagonal screwdriver to aid installation and set up * One of these connectors is supplied for each thermometer channel fitted to the processor. If you have ordered any optional boards, these will be supplied pre-fitted. Check that you have been supplied with all ordered items. User Guide...

  • Page 10: Installing The Processor

    INSTALLING THE PROCESSOR...
  • Page 11 Signal Processor LMG MkII Installing the Processor The Landmark Graphic Mark II processor is designed to be mounted in an instrument panel. The overall installation dimensions of the processor are given in Fig. 2-1. Processor front bezel 192mm/7.6in Cut-Out 184 (+1.1, -0) mm / 7.2 (+0.04, -0) in Protection cover 206 mm / 8.1 in Mounting panel 16 mm / 0.6 in Approximately 400 mm / 15.8 in required for card removal Maximum panel thickness = 13 mm / 0.5 in...

  • Page 12: Installing The Processor In A Panel

    LMG MkII Signal Processor 2.1 Installing the Processor in a Panel Refer to Fig. 2-1. Choose an area of your mounting panel of sufficient size to contain the processor. Carefully cut a rectangular area out of the panel 184 mm / 7.2 in wide, by 137 mm / 5.4 in high. Refer to Fig. 2-3. Unscrew the four retaining screws on the rear of the processor and slide out the two clamp bars. From the viewing side, insert the processor in the mounting panel. From the rear, re-insert the clamp bars into their channels and push them up to touch the mounting panel. Insert and tighten the retaining screws until the mounting panel is firmly gripped between the processor front panel and the clamp bar. CAUTION Do not overtighten the screws as this will deform the clamp bar. Viewing side Clamp bar Mounting panel Retaining screw Fig. 2-2 Mounting the processor in a panel 2 - 2...
  • Page 13 Signal Processor LMG MkII A clear cover is available (Part Nº 812087), which screws onto the processor front panel and seals it to a rating of IP65 (See Fig. 2-3) Fig. 2-3 LMG MkII Processor Cover User Guide 2 - 3...
  • Page 14 LMG MkII Signal Processor Fig. 2-4 LMG MkII Electrical System Overview 2 - 4 User Guide...

  • Page 15: Electrical Connections

    Signal Processor LMG MkII 2.2 Electrical Connections The electrical system overview os given in Fig. 2-4 (opposite). The electrical connections to and from the processor are all made via connectors on the rear panel of the processor. Fig. 2-5 shows the location of the connectors. Alarm output Command input (CMD) Retransmission output Thermometer connector RS485 serial communications output USB update port Power input +24 V dc Fig. 2-5 Rear panel electrical connections User Guide 2 - 5...
  • Page 16 LMG MkII Signal Processor 2.2.1 Alarm output connection schedule The Alarm output connection schedule is given in Fig. 2-6. The Alarm relay contact rating is 50 V ac or dc at 0.5 A. The alarm relays will be in their ‘Alarm’ state when power is removed. Pin Nº Function Description Common Normally Open Alarm 1 Normally Closed Common Normally Open Alarm 2 Normally Closed Fig. 2-6 Alarm cable connection schedule 2.2.2 CMD (Command) input connection schedule The CMD (Command) input connection schedule is given in Fig. 2-7.
  • Page 17 Signal Processor LMG MkII 2.2.3 Output (Retransmission output) connection schedule The Output (Retransmission output) connection schedule is given in Fig. 2-9. Pin Nº Function Description Load Current output drive Maximum loop Current output return resistance: 500 Ω Screen Screen Minimum load Voltage output drive resistance: 10k Ω Voltage output return Fig. 2-9 Retransmission ‘Output’ cable connection schedule...
  • Page 18 LMG MkII Signal Processor 2.2.6 USB Upgrade Port Connect a USB stick with the latest firmware for both Processor and I/O Cards to the UPGRADE Port (Fig. 2-12). The LMG MkII software will update automatically from the files on the USB. See Section 7.2 for instructions on updating the firmware. Fig. 2-12 UPGRADE port 2.2.7 DC power input The dc power input connection schedule is given in Fig. 2-13. Pin Nº Function +24V Fig. 2-13 DC power input connection schedule Fig. 2-14 DC power input from Power Supply 2 - 8 User Guide...
  • Page 19 LMG RS485 connector Fig. 2-15 RS485 interface connector on rear panel of processor LMG MkII isolated RS485 with optional* 120R termination 120R 120R PC with RS485 converter Isolation Screen RS485 converter LMG MkII RS485 6-way connector *Remove rear cover of LMG MkII to access S1. Fig. 2-16 RS485 interface connections User Guide 2 - 9...

  • Page 20: Cable Connector Assembly

    LMG MkII Signal Processor The maximum cable lengths are, to a great extent, dependent on baud rate and cable type. Generally a lower baud rate will give reliable communications over a longer length of a given cable type. RS485 9600 baud, 1000 m when using the cable recommended below, with correct cable terminations. Recommended 1000 m cable for RS485: • 2 pairs individually screened ~ 50 ohms characteristic impedance, <= 55 ohm/km < 100 pf/m core to core < 200 pf/m core to screen 2.3 Cable Connector Assembly The cable connectors for the rear panel of the processor are included in the processor package. Each cable connector must be correctly wired with the appropriate cable before the processor is used (Refer to Section 2.2 for the cable schedules). A ‘write on’ label is included in the connector for your use. To wire up the connector. Make a note of the connector’s orientation in the rear panel of the processor. Unclip the two halves of the connector shell to reveal the terminal block and the cable tie/clamp bar. Wire up the connector, remembering the correct orientation of the plug, in accordance with the relevant cable schedule (see Section 2.2). NOTE Keep wire length as short as possible, especially for any screen connection.

  • Page 21: Fitting An I/O Card

    Signal Processor LMG MkII Clip together the two halves of the connector shell ensuring that the ‘write-on’ label is held in place by the shell assembly. The connector is now ready for use. 2.4 Fitting an I/O card Refer to the document ‘Landmark Graphic MkII Processor - Thermometer or External I/O Card Installation Guide’, AMETEK Land Publication Nº 8xxxxx. User Guide 2 - 11...

  • Page 22: Using The Processor

    USING THE PROCESSOR...

  • Page 23: Getting Started (Accessing The Menu System)

    Signal Processor LMG MkII Using the Processor Once the processor has been installed in its chosen location, it must be connected to at least one System 4 thermometer as a minimum, and to a suitable 24 V dc power supply (See Fig 2-14). Once the processor is connected to a System 4 thermometer, it must be configured for use with that thermometer. The temperature measurement system (i.e. processor and thermometer) is configured, via the processor’s menu system, using the touchscreen display on the front panel. The location of the controls is given in Fig. 3-1. 3.1 Getting Started (accessing the menu system) When the Landmark Graphic MkII processor is connected to a System 4 thermometer and a suitable power supply, the processor display will be similar to that shown in Fig. 3-1. On the left is the Temperature Display area 1 . On the right are 3 ‘Quick’ buttons 2 , 3 & 4 , to access the commonly adjusted parameters quickly. To access the configuration menus, and set up your system to your particular requirements, press the Settings button 5 Touch screen display Emissivity adjustment ‘Quick button’...
  • Page 24 LMG MkII Signal Processor The processor requires an ‘access code’ to be entered before it allows you into the Settings menu (Fig. 3-2). Fig. 3-2 Access code display Use the on-screen keypad to enter the code. The default code is 417. Press the Enter key The Main Configuration Menu will now be displayed. See Fig. 3-3. Fig. 3-3 Main Configuration Menu Note If 60 seconds elapse without a key being pressed, a ‘Time-out’ feature returns you to the original screen (see Fig. 3-2). If this occurs, the access code must be re-entered to regain access to the configuration menus. Fig. 3-3 shows the Main Configuration Menu for a processor connected to four thermometers. Your system may differ from this. • Channel A to D Settings are covered in Section 3.4 to 3.10 • Serial Settings are covered in Section 5 • Maths Functions are covered in Section 6 • Display Settings are covered in Section 3.11 • Changing the Access Code is covered in Section 3.12 3 - 2 User Guide...

  • Page 25: Language Selection

    Signal Processor LMG MkII 3.2 Language Selection The Landmark Graphic MkII processor can be set up to display text in either English, German, Italian, French, Spanish or Japanese. The processor is supplied set up to display in English. Select the Language button on the Main Configuration Menu (Fig. 3-3), then select your required language. The Configuration Menu for the item you selected will now be displayed. Fig. 3-4 shows the Channel A Configuration Menu. 3.3 About the Channel Configuration Menu Fig. 3-4 Configuration Menu components Each Channel Configuration Menu comprises the components shown in Fig. 3-4. The function of each component of the menu is as follows. Main Menu This shows the items that can be altered in the Configuration Menu. Sub Menu This shows the list of options available for each main item in the Configuration Menu. Browse Button Allows selection of the options available in this item. Cancel Button Discards any changes and returns to the previous screen. Confirm Button Saves and applies any changes and returns to the previous screen. User Guide...

  • Page 26: Adjusting Items In The Channel Configuration Menu

    LMG MkII Signal Processor 3.4 Adjusting items in the Channel Configuration Menu Select an item from the Main Menu 1 The sub-menu 2 relating to the selected item is activated. Use the on-screen controls 3 to select the required value for the item. To save your changes and exit the Configuration menu, press the Confirm button 5 (or to discard your changes press Cancel 4 ). The Main Configuration menu is displayed. To exit the Main Configuration Menu, press Cancel 4 . Details of the configurations available are as follows: • Thermometer Type - Section 3.6 • Emissivity - Section 3.7 • Time Functions - Section 4 • Alarms - Section 3.8 •...

  • Page 27: Using The 'Quick' Buttons

    Signal Processor LMG MkII 3.5 Using the ‘Quick’ Buttons The ‘quick’ buttons (See Fig. 3-1), on the temperature views, provide immediate access to the parameters which are changed most frequently. 3.5.1 Emissivity quick button Pressing the button opens up the Emissivity menu (See Fig. 3-5). Fig. 3-5 Quick Button Emissivity menu Note For emissivity settings in the range 0.05 to 0.19, system performance is unspecified and is not guaranteed. 3.5.2 Alarm quick button Pressing the button opens up the Alarm menu (See Fig. 3-6). Fig. 3-6 Quick Button Alarm menu User Guide 3 - 5...
  • Page 28 LMG MkII Signal Processor 3.5.3 Display quick Button Pressing the button opens up the Display menu (See Fig. 3-7). Fig. 3-7 Quick Button Display menu Note The function of each quick button can be locked. This feature is useful in preventing inadvertent or mischievous altering of system settings. The quick button locks are accessed via the Display Settings menu. 3 - 6 User Guide...

  • Page 29: Thermometer Type

    Signal Processor LMG MkII 3.6 Thermometer Type To access the Configuration Menu, press the Settings button Select the Thermometer Type option. A typical Thermometer Type display is shown in Fig. 3-8. Fig. 3-8 Thermometer Type display Navigate through the list of thermometer types & select the exact System 4 thermometer type & temperature range that you have connected to a particular channel. This is important because the LMG MkII applies additional corrections based on the thermometer type in order to achieve the highest possible system accuracy. If an incorrect type is selected, then the wrong correction will be applied. It also sets the range of temperature values allowed in other channel configuration parameters. If you cannot find the thermometer you are connecting, please contact AMETEK Land. If you are connecting a linear temperature transmitter e.g. from a thermocouple, then select an LN function with the correct temperature range. User Guide 3 - 7...

  • Page 30: Emissivity

    LMG MkII Signal Processor 3.7 Emissivity To access the Configuration Menu, press the Settings button Select the Emissivity option. A typical Emissivity/Non Greyness display is shown in Fig. 3-9. Fig. 3-9 Emissivity (or Non Greyness) display The LMG MkII controls single wavelength (M*) System 4 thermometers to correct for the effects of surface emissivity on the particular material whose temperature is being measured. Emissivity depends on the material and the wavelength of the thermometer. Please consult the particular thermometer user guide for recommended emissivity settings. Note for emissivity settings below 0.200, the temperature output specification is not guaranteed. If the thermometer type chosen is a ratio (R*), then the emissivity parameter is replaced by the Non Greyness parameter. 3 - 8 User Guide...

  • Page 31: Alarms

    Signal Processor LMG MkII 3.8 Alarms To access the Configuration Menu, press the Settings button Select Alarms option. A typical Alarms display is shown in Fig. 3-10. Fig. 3-10 Alarms display Each channel I/O card has two independent alarms, with connections to Normally Open (NO) and Normally Closed & NC relay contacts. Use the + and - buttons to select a temperature at which the alarm activates. Temperatures must be within the range of the thermometer selected. Each alarm can be set as either an over temperature (High ) or under temperature (Low ) alarm. When powered off, the LMG MkII will settle into the active alarm state. User Guide 3 - 9...

  • Page 32: Output

    LMG MkII Signal Processor 3.9 Output To access the Configuration Menu, press the Settings button Select the Output option. A typical Output display is shown in Fig. 3-11. Fig. 3-11 Output display Each channel I/O card has a fixed mV/° voltage output, and a configurable current output. The voltage output is useful for connecting a DVM or voltage panel meter to get a direct temperature reading of the display e.g. if the temperature reading on the LMG MkII display is 1135 °C, the mV/° output will be 1.135 V. Each channel I/O card also has a configurable current output – the output can be selected to be either 0-20 mA or 4-20 mA. The maximum and minimum temperature of the selected current output range can set within the range of the temperatures of the attached thermometer (subject to minimum span of 100°). 3.10 Label To access the Configuration Menu, press the Settings button Select the Label option. A typical Label display is shown in Fig. 3-12. Fig. 3-12 Label display 3 - 10 User Guide...

  • Page 33: Display Settings

    Signal Processor LMG MkII The label can be customised so that a particular channel display has a meaningful title above it. Extended character sets and Japanese fonts are accessible via on screen buttons. 3.11 Display Settings To access the Configuration Menu, press the Settings button Select the Display Settings option. A typical Display Settings menu is shown in Fig. 3-13. Fig. 3-13 Label display The Display Settings menu is used to configure and select the various display types that can be used on the LMG. Use the buttons on the left to select which channels display to configure and on the right will appear a list of available display types for that channel. 3.11.1 Quick Key Locks A typical Quick Key Locks menu is shown in Fig. 3-13. Fig. 3-14 Quick Key Locks display User Guide 3 - 11...
  • Page 34 LMG MkII Signal Processor The Quick Key Locks are used to prevent access to the quick key menus from the quick buttons (See 3.5). Only buttons that are set to ‘Open’ can be used from the main screen. 3.11.2 Numerical Display Configuration A typical Numerical Display Configuration menu is shown in Fig. 3-15. Fig. 3-15 Numerical Display Configuration menu In this menu, there is the option to enable displaying of one decimal place. If this is enabled then the temperature in the numerical view will be shown to a tenth of a degree. Pressing the Enable button makes this type of view the active display upon exiting the menu. Fig. 3-16 Typical Numerical display 3 - 12 User Guide...
  • Page 35 Signal Processor LMG MkII 3.11.3 Mixed Numerical Display Configuration A typical Mixed Numerical Display Configuration menu is shown in Fig. 3-17. Fig. 3-17 Numerical Display Configuration menu Mixed numerical, like the standard numerical display, can be configured to show temperatures to a tenth of a degree. Pressing the Enable button makes this type of view the active display upon exiting the menu. Fig. 3-18 Typical Mixed Numerical display User Guide 3 - 13...
  • Page 36 LMG MkII Signal Processor 3.11.4 Line Chart Configuration A typical Line Chart Configuration menu is shown in Fig. 3-19. Fig. 3-19 Line Chart Configuration menu This menu can be used to adjust the scale of the line chart view. Use Tmin and Tmax to adjust the temperature range shown by the chart. Adjust the Timespan to set the vertical scale. Pressing the Enable button makes this type of view the active display upon exiting the menu. Fig. 3-20 Typical Line Chart display The line chart shows a historic profile of the temperature over the selected timespan. The minimum and maximin scaling, as well as the time span can be set from the configuration menu. Red areas on the chart indicate the regions where alarms will be active. This screen also shows the current thermometer reading at the top left of the screen, as well as the alarm levels at the bottom. In an alarm condition, the triggered alarm will flash red. You can drag vertically on the chart to temporarily alter the visible time span shorter or longer. The timespan will return to the default after 5 seconds of not being touched. A maximum of 4.5 hours is recorded by the LMG MkII. 3 - 14 User Guide...
  • Page 37 Signal Processor LMG MkII 3.11.5 Deviation Chart Configuration A typical Deviation Chart Configuration menu is shown in Fig. 3-21. Fig. 3-21 Deviation Chart Configuration menu From this menu, the settings for the deviation chart can be adjusted. Tmid specifies the temperature at the centre of the deviation chart and Tspan determines the range that the graph will span. Timespan is used to adjust the vertical scale of the deviation chart. Pressing the Enable button makes this type of view the active display upon exiting the menu. Fig. 3-22 Typical Deviation Chart display The deviation chart shows the temperature as a difference from a set temperature. The Tmid point sets the temperature in the middle of the chart and the Tspan adjusts how far from the Tmid point the graph displays. Like the line chart, the Timespan is adjustable, and the current reading and alarm values are shown. User Guide 3 - 15...
  • Page 38 LMG MkII Signal Processor 3.11.6 Multi Channel Numeric Configuration A typical Multi Channel Numeric Configuration menu is shown in Fig. 3-23. Fig. 3-23 Multi Channel Numeric Configuration menu Fig. 3-24 Typical Multi Channel Numeric display The Multi Channel Numeric display shows the inputs from four channels at the same time. Each channel shows the current reading in large text, and the alarm values below. If an alarm is active, the corresponding alarm text will flash red. 3 - 16 User Guide...
  • Page 39 Signal Processor LMG MkII 3.11.7 Multi Channel Bar Chart Configuration A typical Multi Channel Bar Chart Configuration menu is shown in Fig. 3-25. Fig. 3-25 Multi Channel Bar Chart Configuration menu Fig. 3-26 Typical Multi Channel Bar Chart display The Multi Channel Bar Chart shows four inputs as a bar chart. The yellow bar represents the current input to the channel. The scale of the bar is adjustable in the settings as well as the output temperature units. Red areas on the bar chart represent the alarm zones. Next to each bar is shown the current reading for each channel, as well as the alarm values. If an alarm is active, the corresponding alarm text will flash red. User Guide 3 - 17...
  • Page 40 LMG MkII Signal Processor 3.11.8 Multi Channel Deviation Bar Chart Configuration A typical Multi Channel Deviation Bar Chart Configuration menu is shown in Fig. 3-27. Fig. 3-27 Multi Channel Deviation Bar Chart Configuration menu Fig. 3-28 Multi Channel Deviation Bar Chart display The Multi Channel Deviation Bar Chart is similar to the standard bar, except the bar represents the variation from a given temperature. The Tmid value is the temperature at the centre of each bar, and the Tspan determines how far from the mid point the bar shows. Red areas represent alarm regions. 3 - 18 User Guide...
  • Page 41 Signal Processor LMG MkII 3.11.9 Multi Channel Input Selection A typical Multi Channel Input Selection menu is shown in Fig. 3-29. Fig. 3-29 Multi Channel Input selection menu For each multi channel display, 4 input channels can be selected. These inputs can be either from regular IO cards, or from one of the two Maths channel, provided a Maths card is fitted. User Guide 3 - 19...
  • Page 42 LMG MkII Signal Processor 3.11.10 Maths Functions Display A typical Maths Functions Display is shown in Fig. 3-30. This is only available if a Maths card is fitted. Fig. 3-30 Maths Functions Display Tmin and Tmax set the bar range, except when the Maths function is Difference, in which case the Tspan sets the scale of the bar Fig. 3-31 Typical Maths Functions display (Maximum) 3 - 20 User Guide...

  • Page 43: Changing The Access Code

    Signal Processor LMG MkII 3.12 Changing the Access Code Press the key on the front panel. The Access Code will be displayed. Refer to Fig. 3-32. Fig. 3-32 Typical Access Code display Use the on-screen keypad to enter the Access Code (The default code is 417). Press the key. F rom the Main Configuration Menu, select the Change Access Code option. Enter the new Access Code. Press the key. The Access Code is now changed. User Guide 3 - 21...

  • Page 44: Time Function Processing

    TIME FUNCTION PROCESSING...

  • Page 45: None

    Signal Processor LMG MkII Time Function Processing The LMG MkII contains a number of ‘ Time Function algorithms which help deliver a more consistent temperature reading from a sometimes noisy, changeable reading from the infrared thermometer. The following sections help you choose and configure the time function most appropriate for your application. The Time functions available are shown in Fig. 4-1. Fig. 4-1 Time Function Processing menu 4.1 None The LMG MkII will display the raw output from the Thermometer. 4.2 Averager Refer to Fig. 4-2. The Averager time function can be used to ‘smooth’ the temperature output signal in relation to the temperature input. The Averager response can be adjusted to suit your application. With a fast response speed, the temperature output signal tracks the input signal closely, any rapid fluctuations in the input are reflected in the output. With a slow response speed, the temperature output signal is much smoother, displaying more the ‘trend’ of the input signal rather than rapid changes. Fast averager response speed Slow averager response speed Time Fig. 4-2 Graphical representation of the Averager time function User Guide 4 - 1...
  • Page 46 LMG MkII Signal Processor Adjustable decay rate 'Hold' mode 'ON' Delay Threshold level 'OFF' Delay 'Reset' mode Time Fig. 4-3 Graphical representation of the Peak Picker time function Processor output Thermometer signal ‘On’ delay Bottom temp. limit Time Sample time (adjustable) Fig. 4-4 Typical output of Peak Sampler time function 4 - 2 User Guide...

  • Page 47: Peak Picker

    Signal Processor LMG MkII 4.3 Peak Picker The Peak Picker function can be used to monitor the highest temperature measured by the thermometer. This feature is useful especially for moving targets and/or where the target is obscured partially e.g. a steel slab on a rolling mill where parts of the surface are covered with scale. The ‘clean’ area will be at the higher (i.e. true) temperature. The Peak Picker used in Landmark Graphic processors has the following features. Threshold level Temperature above which the Peak Picker is active, used in conjunction with the ON and OFF delay. ON delay Time period between the temperature rising above the threshold level and the Peak Picker function switching on. OFF delay Time period between the temperature falling below the threshold level and the Peak Picker function switching off. In ‘Hold’ mode, at the end of the ‘OFF’ delay, the temperature output value is held constant until the temperature input next rises above the threshold level. In ‘Reset’ mode, at the end of the ‘OFF’ delay, the temperature output signal falls to ‘under-range’ until the temperature input next rises above the threshold level. In ‘Sample’ mode the peak picker samples for a pre- defined period, then outputs this value. Decay rate A user-adjustable value at which the stored temperature output signal decays. The Peak Picker function can be reset via the CMD (Command) input. The CMD input connections and operation is shown in Fig. 2-5 and Fig. 2-6. For typical Peak Picker and Peak Sampler responses, see Fig. 4-3 and Fig. 4-4 respectively. User Guide...

  • Page 48: Valley Picker

    LMG MkII Signal Processor 4.4 Valley Picker Temp Max Threshold Output Time Command Fig. 4-5 Typical output of Valley Picker function Refer to Fig. 4-5. This function is the inverse of the peak picker. It allows the operator to find the minimum peak value instead of the largest peak value. Threshold level: Temperature below which the Valley Picker is active, used in conjunction with on/off delays. ON/OFF delay: See Peak Picker. Recovery rate: A user adjustable rate at which the stored temperature recovers. 4 - 4 User Guide...

  • Page 49: Track And Hold

    Signal Processor LMG MkII 4.5 Track and Hold Time Track Hold Track Hold Command Command signal = Closure of potential-free contacts, s/c = Hold TTL level (0 to 5V) +5V = Track or 0 to 24V +24V = Track 0V = Hold Fig. 4-6 Graphical representation of Track and Hold time function...

  • Page 50: Serial Communications

    SERIAL COMMUNICATIONS...
  • Page 51 Signal Processor LMG MkII Serial Communications The Landmark Graphic MkII RS485 serial port allows communication to set read parameters to the processor. The port must be set up to match the communication parameters of the sending device. The following parameters are setable (See Fig. 5-1). Access to the Serial settings screen is via the main menu (See Fig. 3-3). Unit address: 0 to 15 Baud rate: 300, 600, 1200, 2400, 4800, 9600, 57600 and 115200 Data bits: 8 or 7 bits Parity: None, Odd or even Stop bits: 1 or 2 Table 5-1 Serial Communications specification Fig. 5-1 Serial Port Settings screen The available commands are given in Section 5.1. The detailed format of the commands is given in Section 5.2. Specific timing requirements are given Section 5.3. User Guide 5 - 1...

  • Page 52: Serial Port Commands

    LMG MkII Signal Processor 5.1 Serial Port Commands This section lists only those Landmark Graphic MkII Processor parameters and ranges accepted that can be modified by the user using the serial command. The following parameters are covered in this section: • Standard serial communications parameters • Maths (External I/O Card) parameters Note All serial data is transmitted as standard ASCII characters. Key to Parameters Mnemonic This is the 3-character code used by the LMG MkII to recognise parameters This is the minimum parameter value that the LMG MkII will accept in ASCII characters This is the maximum parameter value that the LMG MkII will accept in ASCII characters Increment This is the valid increment of each parameter value recognised by the LMG MkII Default This is the default value of each parameter before adjustments are made Units This gives (where appropriate) the units which will be used by the LMG MkII for that parameter Note No floating point numbers are allowed to be transmitted via the serial interface, so parameters which are displayed as such will be scaled to produce a 4-byte ASCII value of the parameter Example: Emissivity max = 1.000, so the value transmitted via the serial...
  • Page 53 Signal Processor LMG MkII 5.1.1 Standard Serial Communications Card Parameters Range Name Menu title text Default Comments Increment Thermometer type Read only Emissivity 1000 1000 e.g. Use of correct 0.200 = 200 parameter is Non-greyness 1250 1000 e.g. determined by 1.103 = irt_type value. 1103 Time function 0 = None 1 = Averager 2 = Peak picker 5 to 7 not used 3 = Track &...
  • Page 54 LMG MkII Signal Processor Range Name Menu title text Default Comments Increment Averager response 0 = 0.00 time 1 = 0.05 2 = 0.10 3 = 0.15 4 = 0.25 5 = 0.50 6 = 1.0 Exponential 7 = 2.0 response time in 8 = 4.0 seconds 9 = 8.0 10 = 16.0 11 = 32.0 12 = 64.0 13 = 128 14 = 256 15 = 512 Alarm 1 Mode 0 = Low 1 = High Alarm 1 Level irt_min irt_ irt_max...
  • Page 55 Signal Processor LMG MkII 5.1.2 Maths Parameters (Common Parameters) For a explanation of Maths Functions, see Section 6. Range Comments Name Menu title text Default Increment Units Menu value text Maths Function 1 Type 0 = Max 1 = Min 2 = Mean 3 = Diff 4 = Range 5 = BGComp Maths function 1 Add together: Allocation ChA = 128 ChB = 64 ChC = 32 ChD = 16 Maths Function 1 Dependent upon Tmax...
  • Page 56 LMG MkII Signal Processor Range Comments Name Menu title text Default Increment Units Menu value text Maths Function 2 Type 0 = Max 1 = Min 2 = Mean 3 = Diff 4 = Range 5 = BGComp Maths function 2 Add together: Allocation ChA = 128 ChB = 64 ChC = 32 ChD = 16 Maths Function 2 Dependent upon Tmax thermometer Maths Function 2 Dependent upon Tmin thermometer...

  • Page 57: Rs485 Serial Communication Data Format

    Signal Processor LMG MkII 5.2 RS485 Serial communication data format 5.2.1 RS485 read data mode Computer/Terminal Landmark Graphic STX (0x02) Address (0x??) Channel letter (ASCII) Parameter value being modified (ASCII) ETX (0x03) STX (0x02) Address (0x??) Channel letter (ASCII) New parameter...
  • Page 58 LMG MkII Signal Processor 5.2.3 RS485 examples The RS485 communications is designed primarily for use by a computer running a customised communications package. To read the temperature from channel ‘A’ ... Type at the terminal [STX][addr]RATMP[ETX] breakdown STX Binary 0x02, start of text framing c haracter addr Binary address of processor to be interrogated Read mode Channel A TMP Command to report the temperature ETX Binary 0x03, end of text framing character reply [STX][addr]A1000C[ETX] breakdown STX Binary 0x02, start of text framing c haracter...
  • Page 59 Signal Processor LMG MkII To read label of channel ‘C’ ... Type at the terminal [STX][addr]RCLBL[ETX] breakdown STX Binary 0x02, start of text framing c haracter addr Binary address of processor to be interrogated Read mode Channel C LBL Command to work on the label ETX Binary 0x03, end of text framing character reply [STX][addr]CCh C XYZ[EXT] breakdown STX Binary 0x02, start of text framing c haracter addr Binary address of replying processor Channel ident of replying processor...

  • Page 60: System Communications Timing Data

    LMG MkII Signal Processor 5.3 System Communications Timing Data 5.3.1 Parameter update rate All parameters available to the user are updated on a <100 ms cycle. NOTE Heavy use of the serial port may interfere with the update and may stop parameters being refreshed. 5.3.2 Command response time This is the time taken between the end of the last character of a command and the beginning of the first character of the serial cards reply. It is the time taken by the serial card to process a command. This time is independent of the selected baud rate. Some variability is present due to the following: the processing required by a particular command the time taken by processor housekeeping All commands are serviced within 30 ms. 5.3.3 Command reply time This is the time taken by the serial cards reply. It is directly related to the selected baud rate and the number of characters in the reply. 5.3.4 Inter-command timing This is the time between the end of the last character of a command received by the serial card, and the end of the last character of its response i.e. the...
  • Page 61 Signal Processor LMG MkII 5.3.5 Cable lengths The maximum cable lengths are, to a great extent, dependent on baud rate and cable type. Generally a lower baud rate will give reliable communications over a longer length of a given cable type. RS485 9600 baud, 1000 m when using the cable recommended below, with correct cable terminations. Recommended 1000 m cable for RS485: • 2 pairs individually screened; ~ 50 ohms characteristic impedance, <= 55 ohm/km; < 100 pf/m core to core < 200 pf/m core to screen User Guide 5 - 11...
  • Page 62 LMG MkII Signal Processor Blank...

  • Page 63: External I/O Maths Functions

    EXTERNAL I/O MATHS FUNCTIONS...
  • Page 64 LMG MkII Signal Processor Screws (A) Screws (A) Fig. 6-1 Location of screws on back panel...

  • Page 65: Ext I/O Maths Function Card Installation Instructions

    Signal Processor LMG MkII External I/O Maths Functions Maths functionality is only available if the External I/O Maths Card has been purchased and fitted. Maths functionality allows specific algorithms to be applied to a combination of thermometer and analog input channels. The analog outputs and alarm relays on the External I/O Maths Card can be mapped to the computations produced by the Maths function. 6.1 Ext I/O Maths Function Card Installation Instructions If you have purchased the Maths card separately, please follow these installation instructions: NOTE Disconnect the processor from the power supply before removing the rear panel. Observe precautions for handling electrostatic discharge sensitive devices. Refer to Fig. 6-1. Unscrew the six screws (A). Retain the screws in a safe place for re-assembly. Remove the rear panel to reveal the I/O cards in the processor. Remove the card from the conductive packaging. Insert the card into the slot nearest to the power supply in the processor. The rear connector position prevents insertion in an incorrect slot. Remove the relevant blanking plates from the rear panel. Refer to Fig. 7-1. Secure the rear panel onto the processor, using the six screws (A) which were removed originally. Reconnect the power supply. The Ext I/O Maths Function card is now installed in the Landmark Graphic MkII Processor.

  • Page 66: Maths Card Electrical Connections

    LMG MkII Signal Processor 6.2 Maths Card Electrical Connections Refer to Fig. 6-1 for the location of the Maths Card connections. 6.2.1 External I/O Maths Analog Output Connection Schedule The 4 to 20 mA Output connection schedule is given in Fig. 6-2. Pin Nº Function Description Load Current output drive Maximum loop resistance: 500 Ω Current output return Screen Screen Minimum load Current output drive resistance: 500 Ω...
  • Page 67 Signal Processor LMG MkII 6.2.3 External I/O Maths Analog Input Connection Schedule The 4 to 20 mA Input connection schedule is given in Fig. 6-4. Pin Nº Function Description Load Screen Screen Input Current input drive AI - resistance: 200 Ω Current output return AI + Fig. 6-4 External I/O Analog Input Connections 6.2.4 External I/O Maths Digital Input Connection Schedule The External I/O Digital Input connection schedule is given in Fig. 6-5.
  • Page 68 LMG MkII Signal Processor Fig. 6-7 Typical Access Code display Fig. 6-8 Typical Main Configuration Menu display Fig. 6-9 Typical Maths Configuration Menu display 6 - 4 User Guide...

  • Page 69: Maths Functions

    Signal Processor LMG MkII 6.3 Maths Functions The maths functions of the Landmark Graphic MkII processor can be accessed and configured via the menu system. Press the key on the front panel. The Access Code will be displayed. Refer to Fig. 6-7. Use the on-screen keypad to enter the Access Code (The default code is 417). Press the key. T he Main Configuration Menu will be displayed. Refer to Fig. 6-8. Select the Maths Functions option. The Maths Configuration menu will now be displayed. Refer to Fig. 6-9. A maximum of two maths functions may be configured for simultaneous operation. There are two 0 to 20 mA or a 4 to 20 mA outputs and alarm relays. Any fitted thermometer input channel, or the analog input channel of the Maths card itself, can be specified to be used in either or both Maths Function calculation. Mapping of the I/O to the Maths function is done via the Maths I/O button. The available Maths functions are: • Maximum (See Section 6.4.1) • Minimum (See Section 6.4.2) • Average (See Section 6.4.3) • Range (See Section 6.4.4) • Difference (See Section 6.4.5) •...
  • Page 70 LMG MkII Signal Processor 6.3.1 Under/Over Range Operation This section details under/over range operation for each mathematical function. Maximum ANY selected channel going OVER range will cause the SYSTEM output to go OVER range. Only when ALL selected channels have gone UNDER range will the SYSTEM output go UNDER range. Minimum ANY selected channel going UNDER range will cause the SYSTEM output to go UNDER range. Only when ALL selected channels have gone OVER range will the SYSTEM output go OVER range. Average, Difference Any output which goes under or over range will result in the system output doing likewise. Common If any calculation is indeterminate, this will be displayed clearly on the appropriate maths function display by the ‘----’ symbols in the numerical part of the display. 6.3.2 Maths Function Display Settings You can specify upper and lower limits for the display of each function. For example, if your application has a typical maximum temperature of 1000 °C, you can choose that the lowest maximum value to be displayed is 800 °C and the highest maximum is 1200 °C. Press the key on the front panel.

  • Page 71: Maths Function Options

    Signal Processor LMG MkII 6.4 Maths Function Options 6.4.1 Maximum In this function, the LMG MkII processor selects, from the allocated channels, the maximum value. This value is displayed by the processor and output on the selected system output (as shown in Fig. 6-10). Select Function 1 (or Function 2 if required). Press the Text Input button and use the touchscreen keypad to enter a name for the maths function e.g. Maximum. Use + and - buttons to scroll through the maths function options and select Maximum. Select Inputs. The list of available input channels is displayed. Select Enable for each channel that you want to use for the maths function (Disable excludes the output from the function), then press Select Alarms, then use the on-screen controls to set levels for Alarms 1 and 2. You can set each alarm to be either a high or low alarm. For example, you can set Alarm 1 to be activated if the maximum temperature falls below 820 °C (low alarm), and Alarm 2 to be activated if the maximum temperature goes above 1180 °C (high alarm). To map the alarms to a physical relay output, See Section 6.5. When you have made the required settings for the Maximum maths function, press , then press , then press to return to the main display.
  • Page 72 LMG MkII Signal Processor Fig. 6-11 Typical Minimum Maths Function Display Fig. 6-12 Typical Average Maths Function Display 6 - 8 User Guide...
  • Page 73 Signal Processor LMG MkII 6.4.2 Minimum In this function, the LMG MkII selects, from the allocated channels, the minimum value. This function is set up in a similar way to Maximum (See section 6.4.1), except that at Step 3, select Minimum. 6.4.3 Average This function calculates and displays the Average value of all the allocated channels. This is achieved simply by adding all the temperatures together then dividing by the number of allocated channels. This function is set up in a similar way to Maximum (See section 6.4.1), except that at Step 3, select Average. User Guide 6 - 9...
  • Page 74 LMG MkII Signal Processor Fig. 6-13 Typical Range Maths Function Display Fig. 6-14 Typical Difference Maths Function Display 6 - 10 User Guide...
  • Page 75 Signal Processor LMG MkII 6.4.4 Range This function displays the range in temperature of the selected channels i.e. it calculates the absolute difference between the maximum and minimum temperatures. This function is set up in a similar way to Maximum (See section 6.4.1), except that at Step 3, select Range. 6.4.5 Difference In this function, any TWO (and only two) of the four channels can be allocated. The difference between the two channels is displayed and output by the processor. The function always subtracts the second of the two allocated channels from the first (in alphabetical order) and provides a bipolar output based on the calculation. e.g. Selected Channels Result A - B A - D B - C etc. When operating in difference mode, the analogue output range can be configured to represent both positive and negative values. Select Function 1 (or Function 2 if required) (Fig. 6-8). Press the Text Input button and use the touchscreen keypad to enter a name for the maths function e.g. Difference. Use + and - buttons to scroll through the maths function options and select Difference. Select Inputs. The list of available inputs is displayed, then select Enable for the two inputs that you want to use for the maths function.
  • Page 76 LMG MkII Signal Processor Fig. 6-15 Typical Background Compensation Maths Configuration Menu showing System Emissivity setting 6 - 12 User Guide...
  • Page 77 Signal Processor LMG MkII 6.4.6 Background Compensation The Background Compensation algorithm is explained in Section 6.6.3. In this function any two (and only two) of the four possible channels can be allocated. The first channel allocated becomes the primary measurement channel and also sets the units of operation. The second channel allocated becomes the reference channel. Note 1 Individual channels used MUST have their emissivities set to 1.000. The system will attempt to do this automatically. Note 2 It is not recommended to apply this maths function to short wavelength thermometers. M1 thermometers cannot be used as the primary measurement channel. Select Function 1 (or Function 2 if required) (Fig. 6-8). Press the Text Input button and use the touchscreen keypad to enter a name for the maths function e.g. Background. Use + and - buttons to scroll through the maths function options and select Background Compensation. Select Inputs. The list of available inputs is displayed, then select Enable for the two inputs that you want to use for the maths function. If you select more than two, the function will use the first two inputs selected. Press Select Alarms, then use the on-screen controls to set levels for Alarms 1 and 2. You can set each alarm to be either a high or low alarm. For example, you can set Alarm 1 to be activated if the difference in temperature falls below 10 °C (low alarm), and Alarm 2 to be activated if the difference in temperature goes above 50 °C (high alarm).

  • Page 78: Alarm And Current Output Configuration

    LMG MkII Signal Processor 6.5 Alarm and Current Output Configuration 6.5.1 Maths Function Alarm levels Fig. 6-16 Typical Maths Function Alarm Levels Configuration Screen Each Maths function has two alarms that can be configured. Each alarm can either be a High or Low alarm. A high alarm will activate if the output from the Maths function is above the selected level. A low alarm will activate if the temperature is under the selected level. 6 - 14 User Guide...
  • Page 79 Signal Processor LMG MkII 6.5.2 Alarm Mapping Fig. 6-17 Typical Maths Function Alarm Mapping Screen When a Maths I/O Card is fitted, two alarm relay outputs are provided. These can be mapped to any of the four alarms available on the Maths function. Use the + and – buttons to scroll though the options: Function 1 Alarm 1 = Alarm 1 from Maths function 1 is mapped to the output relay Function 1 Alarm 2 = Alarm 2 from Maths function 1 is mapped to the output relay Function 1 All Both alarms from maths function 1 are mapped to the output relay. If either is active, the alarm will be active. Function 2 Alarm 1 = Alarm 1 from Maths function 2 is mapped to the output relay Function 2 Alarm 2 = Alarm 2 from Maths function 2 is mapped to the output relay Function 2 All Both alarms from maths function 2 are mapped to the output relay. If either is active, the alarm will be active. None Nothing is mapped to the relay. User Guide...
  • Page 80 LMG MkII Signal Processor 6.5.3 Maths I/O Current Loop Output Fig. 6-18 Typical Maths I/O Current Loop Output Screen Each Maths output has its own analogue output on the Maths I/O card. Maths functions 1 is output on analogue output 1 on the I/O card. For each output, the range is configurable in the Maths I/O menu. Choose either a 4 to 20 mA or a 0 to 20 mA range and the temperatures to scale the output. 6 - 16 User Guide...
  • Page 81 Signal Processor LMG MkII 6.5.4 Maths I/O Analogue Input Configuration Fig. 6-19 Typical Maths I/O Analogue Input Configuration Screen The analogue input on the Maths I/O card can be used as an input to any of the Maths functions. The configuration screen allows the user to adjust the temperature range the input represents. It can be configured to work in either 0 to 20 mA or 4 to 20 mA mode. The units can be selected to allow the input to represent temperatures in both °C and °F. User Guide 6 - 17...
  • Page 82 LMG MkII Signal Processor Channel A Channel B Thermometer A Thermometer B Product movement Fig. 6-20 Application example - System self checker 6 - 18 User Guide...

  • Page 83: Typical Maths Function Applications

    Signal Processor LMG MkII 6.6 Typical Maths Function Applications This section gives a brief outline of some of the applications in which the Maths Function of the Landmark Graphic MkII processor can be used. Explanations are given on how the temperature information available is processed to give outputs relevant to the process being monitored. For more information and advice on your application, contact AMETEK Land. 6.6.1 System Self Checker In this application two thermometers, with identical temperature ranges and set up parameters, are sighted onto precisely the same target spot. Refer to Fig. 6-20. The thermometers are connected to the Landmark Graphic MkII processor on Channels A and B respectively. The Maths function is set up as ‘Difference’ (A-B) and the level is set to a low value e.g. +/-5°C (determined during installation and commissioning of the system). As the thermometers are monitoring exactly the same target, the output readings should be nearly identical. If however one of the thermometers develops a fault, or there is an interruption to the thermometer services (i.e. power, purging air or cooling water), the readings will differ and the alarm activated. This system minimises the need for maintenance checks, as any fault is highlighted immediately. User Guide 6 - 19...
  • Page 84 LMG MkII Signal Processor Channel A Channel B Thermometer A Thermometer B (Fast response speed) (Slow response speed) Product movement Hot object arrives Hot object leaves A - B A - B Time Time Difference A - B is positive...
  • Page 85 Signal Processor LMG MkII 6.6.2 Hot edge detection Refer to Fig. 6-21. In this application, two thermometers are sighted onto a target area which is passed by moving hot objects on a production line/mill etc. The thermometers are connected to the Landmark Graphic MkII processor on Channels A and B, with thermometer A set up with a fast response speed and thermometer B set up with a much slower response. The Maths function on the processor is set up as ‘Difference’ (A-B) with a nominal alarm value set (determined during installation and commissioning of the system). Upon the arrival of a hot moving object in the field of view, Output of Channel A rises much quicker than that of Channel B. The Difference function alarm is activated and the fact that Difference A-B is a positive value, indicates that a hot object has arrived in the field of view. This alarm signal output could be used to activate a process further along the production line e.g. switching on cooling air/water. When the hot object leaves the field of view, the output of Channel A falls much quicker than that of Channel B. Again, the Difference function alarm is activated but this time the A-B value is negative, indicating that a hot object has left the field of view. This signal could now be used to switch off the process activated by the arrival of the hot object. User Guide 6 - 21...
  • Page 86 LMG MkII Signal Processor 6.6.3 Background Compensation Configuration of the LMG MkII to perform this function is covered in Section 6.4.6. This function provides a correction for background reflection and load emissivity. It is available on the following thermometer ranges M2, M3, M4, M5, M6, M7, M8, VDT and FTS. It is not recommended that Background Compensation be used on short wavelength thermometers. NOTE Channels to be used MUST have their emissivity values set to = 1.00 otherwise significant errors in reading true temperature will occur. If an input from a background sensing thermocouple is to be accepted into an LMG MkII, then: • the LMG MkII must have an I/O card fitted which is allocated to accepting the thermocouple transmitter input • the thermocouple’s characteristic non-linear output must be linearised and converted to a 4 to 20mA signal, equivalent to one of the LMG MkII pre-determined linear input ranges, before being transmitted to the LMG MkII i.e. 0 to 600°C 30 to 1100°F 0 to 1100°C 30 to 2000°F 0 to 1600°C 30 to 3200°F Compensation Examples Secondary Input (Background Temp) True Load Temp...
  • Page 87 Signal Processor LMG MkII Primary Input (Apparent Load Temp) LMG Processor True Load Temp 3.9µm Thermometer Secondary Input (Background Temp) 3.9µm Thermometer Fig. 6-23 Schematic showing 2x thermometer in system User Guide 6 - 23...

  • Page 88: Maintenance

    MAINTENANCE...

  • Page 89: Available Spares

    Signal Processor LMG MkII Maintenance The Landmark Graphic MkII processor is designed to be virtually maintenance free. The maximum recommended period between calibration checks is one year. 7.1 Available Spares Description Part Number LMG MkII Processor Cover 812087 LMG MkII Display Module - Spares Kit 812520 LMG MkII Connection PCB - Spares Kit 812521 LMG MkII System 4 I/O - Upgrade/Spares Kit 812522 LMG MkII Ext I/O PCB - Upgrade/Spares Kit 812523 7-way Plug 212.211 7-way Cable Housing 212.216 5-way Plug 212.214 5-way Cable Housing 212.218 6-way Plug 212.215 6-way Cable Housing 812645 2-way Plug 212.213 2-way Cable Housing 812646...

  • Page 90: Usb Functions

    LMG MkII Signal Processor 7.2 USB Functions The Landmark Graphic MkII is fitted with a USB port on the rear of the instrument. This provides two functions, firstly it allows for the internal software to be updated and secondly allows the user to export the recorded temperature history to an attached USB storage device. USB Port/Device support: Standard: USB 2.0 Power rating: 1A Max Device Support: USB Storage (<=128GB FAT32) 7.2.1 Software Update To update the Landmark Graphic MkII software via the USB port: Obtain the latest update.lmg file from AMETEK Land. Copy the update.lmg file onto a USB storage device. The file must be placed in the top level folder on the drive. Insert the USB storage device into the Landmark Graphic MkII. Use the access code to enter the main menu If the USB storage device is found, the USB functions button will be displayed, as shown in Fig. 7-1. Click on this button. Fig. 7-1 USB option in Main Configuration Menu 7 - 2 User Guide...
  • Page 91 Signal Processor LMG MkII From the USB menu, select the Software Update option. Fig. 7-2 USB Software Update option If the update file is valid, then the sub-menu area should display a Software Update button. Click this to begin the update. If the update file is not found or invalid, the button will display the message ‘update.lmg not found’ User Guide 7 - 3...
  • Page 92 LMG MkII Signal Processor Fig. 7-3 USB Export Data option 7 - 4 User Guide...
  • Page 93 Signal Processor LMG MkII 7.2.2 USB Data Export The Landmark Graphic MkII contains an internal log of the last 24 hours of temperature reading for each IO card channel fitted. The USB function menu allows the operator to export this internal log as a CSV file to a USB storage device. NOTES Only the final processed temperature which includes averaging/peak picking etc is stored (ie, the value shown on the display). The internal log is volatile, which means that it is lost if the unit is reset or power is disconnected. To export the log, follow the procedure: Insert a suitable USB storage device into the Landmark Graphic MkII USB port Enter the code to access the main menu. If the USB device is found, the USB function button will be shown. Click on it to access the USB functions menu. From the USB function menu, select ‘Export Data’ (See Fig. 7-3). Set the Length adjuster to select how much historic data s to be exported. e.g. 5m exports the last 5 minutes of recorded data, 8h exports the last 8 hours of recorded data. The Available line shows how long the internal log currently is. If the unit has been recently rebooted, this will show the time since the unit started. Once the log is full, this will show 24 hours. Adjust the Interval setting to select the resolution of the exported data. The internal log stores values every 100 ms, so this is the smallest selectable interval. The interval is adjustable up to 60 seconds. e.g. a 1 hour length log with interval 100 ms will export 36000 data points per channel. A 24 hour length log with interval 30 s export 960 data points per channel.

  • Page 94: Upgrading From Lmg Mki To Lmg Mkii

    UPGRADING FROM LMG MkI TO LMG MkII...

  • Page 95: Upgrade Procedure

    Signal Processor LMG MkII Upgrading from LMG MkI to LMG MkII The LMG MkII is designed to easily replace an existing old LMG already installed 8.1 Upgrade Procedure Unplug the old LMG and remove from control panel Install LMG MkII in exisiting panel cut out and secure Reconnect existing connectors (except power) Either – Connect in an exisiting 24V dc power supply (see 2.2.6) OR – wire in the 24Vdc DIN rail PSU supplied (see 2.2.7) Configure the LMG MkII using the menu system to match the old set up. 8.2 Differences & Similarities The table below highlights the differences between the new LMGMkII and the old LMG Similarities Differences Features Display 800 x 480 colour display Keypad Touch screen Menu Same menu structure Language Menu selectable...
  • Page 96 For a full list of international offices, please visit our website www.ametek-land.com Copyright © 2018 LAND Instruments International. Continuous product development may make it necessary to change these details without notice. LMG MkII Signal Processor User Guide, Issue 1, 22 June 2018...

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