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User Guide

Signal Processor

LMG GS

1 Introduction

1.1 About this Guide

This guide gives you the information necessary for you to operate a LAND

Landmark Graphic GS processor. Basic information regarding installation

of the processor is also contained in the Installation Guide. More detailed

information regarding servicing, repair and calibration of the processor is

contained in the Service Manual.

Fig.1 - Landmark Graphic GS Signal Processor

238001

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Summary of Contents for Land LMG GS

Page 1: ...Signal Processor Copyright 2004 2010 Land Instruments International User Guide Issue 2 07 10 Publication N LMGGS 198 238 Language English LMG GS...

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Page 3: ...the correct returns procedure Any item returned to Land Instruments International should be adequately packaged to prevent damage during transit You must include a written report of the problem toget...

Page 4: ...es and mountings and special instruments based on System 4 UNO thermometers accessories and mountings and special instruments based on UNO Application dedicated processors based on LANDMARK Graphic AB...

Page 5: ...onditions outside the Ambient Temperature Humidity and Vibration rating of the product environmental contamination solvent vapours deposition of airborne contamination cooling liquids of non neutral p...

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Page 7: ...able Connector Assembly 19 2 4 GST Thermometer Cable Connector Assembly 20 2 5 a c Power Input Plug 22 3 Using the Processor 23 3 1 Getting Started accessing the menu system 26 3 2 About the Menu Syst...

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Page 9: ...r you to operate a LAND Landmark Graphic GS processor Basic information regarding installation of the processor is also contained in the Installation Guide More detailed information regarding servicin...

Page 10: ...ode context sensitive help display and Quick Key selection of the most commonly changed parameters Multi channel version for up to four thermometers A choice of time function processing options for ea...

Page 11: ...or System 4 Thermometers Accuracy 0 12 of reading Stability Temp 0 01 of span Discrimination 0 015 of full scale Input update User label 2 5ms Up to 10 characters Outputs 1mV and 0 to 20mA or 4 to 20m...

Page 12: ...Page 4 Signal Processor User Guide LMG GS...

Page 13: ...ic GS LMG GS Inputs 2 x 10V Accuracy 0 3 of FSR Discrimination 0 003 of FSR Stability 0 004 of span Input Update 7 5ms Output Update 30ms Outputs Temperature Emissivity 0 to 20mA or 4 to 20mA user sel...

Page 14: ...and a clamp bar for Retransmission output connection v 2 way plug for command input connection vi 3 way appliance connector rewireable for power input cable vii One 2 5mm flat bladed screwdriver and o...

Page 15: ...be mounted into an instrument panel The overall installation dimensions of the processor are given in Fig 2 Processor front bezel 144mm 5 7in Processor front bezel 192mm 7 6in Protection cover 206mm...

Page 16: ...e or falling to the bottom of the signal range i e down scale The processor is supplied fitted for up scale operation The mode of operation is set by means of a link on each input board fitted To gain...

Page 17: ...s into their channels and push them up to touch the mounting panel vi Insert and tighten the retaining screws until the mounting panel is firmly gripped between the processor front panel and the clamp...

Page 18: ...re removing the rear panel screws Ensure that the a c mains input is disconnected before removing the rear panel of the processor 2 2 Electrical Connections The electrical connections to and from the...

Page 19: ...6 7 1 2 3 4 5 6 1 2 1 2 3 4 5 1 2 3 4 5 6 7 9 10 1 2 3 4 5 6 1 2 1 2 3 4 5 1 2 3 4 5 6 7 9 10 1 2 3 4 5 6 1 2 1 2 3 4 5 1 2 3 4 5 6 7 9 10 A B C D 1 Alarm output 7 AC power input 2 Command input 8 RS...

Page 20: ...The command input can be controlled via a remote switch as shown in Fig 7 or via potential free contacts as shown in Fig 8 NOTE Each alarm is designed to be fail safe i e if there is a loss of power...

Page 21: ...n Where 3 0V Switch Open 1 5V Switch Closed NOTE Potential free contacts can be replaced by voltage Vin Where 3 0V Open Circuit 1 5V Closed Circuit Function Peak Picker Track Hold Valley Picker Switch...

Page 22: ...link the back panel of the processor must be removed i Refer to Fig 10 unscrew the four screws A on the back panel of the processor ii Slide the I O board out of the rear of the processor The locatio...

Page 23: ...rive Current output return Screen Emissivity output drive Emissivity output return OUTPUT Function Load Description THERMOMETER ALARMS 100 120V 200 240V 50 60Hz 35VA MAX T 1A 250V RS 232C RS 485 1 2 3...

Page 24: ...GS Fig 11 Location of up scale down scale selector on the input output I O p c b 238011 U26 C49 C10 C25 D5 D6 U7 R25 D4 C13 R23 R24 Infrared U28 U8 R54 CON 1 C46 R55 U25 C43 R20 C44 U23 C45 U22 R44 C4...

Page 25: ...ut connection schedule The thermometer input output connection schedules are given in Fig 12 and 13 Fig 12 GST thermometer cable connection schedules 238012 Pin N Thermometer output 1 2 3 4 5 6 7 8 9...

Page 26: ...for the Landmark Graphic GS Processor e g maths function serial comms refer to the User Guides supplied with the particular option Fig 13 System 4 thermometer cable connection schedule 238013 Pin N Th...

Page 27: ...e connector i Make a note of the connector s orientation in the rear panel of the processor ii Unclip the two halves of the connector shell to reveal the terminal block and the cable tie clamp bar iii...

Page 28: ...ules To wire up the connector i Make a note of the connector s orientation in the rear panel of the processor ii Wire up the connector remembering the correct orientation of the plug in accordance wit...

Page 29: ...Page 21 User Guide Signal Processor LMG GS Keep wire length as short a spossible 10 1 Fig 14a Wiring arrangement for GST Thermometer cable connector 238014a...

Page 30: ...power input plug wiring schedule 238015 2 5 a c Power Input Plug A rewireable a c power input plug is supplied with the processor which will accept any mating IEC connection The plug complies with BS...

Page 31: ...configured for use with that thermometer Electrical connections to and from the processor are made on the rear panel The temperature measurement system i e processor and thermometer is configured via...

Page 32: ...TURN CHANNEL A CHANNEL B CHANNEL C CHANNEL D MULTI CHANNEL DISP QUICK KEY LOCKS EXIT SAVE CHANGES DISCARD CHANGES RS 232 RS 485 OFF EVEN ODD TYPE MODE THRESHHOLD ON DELAY OFF DELAY DECAY RATE RESPONSE...

Page 33: ...RITY EXIT DISPLAY TYPE Tmid Tspan Tmax Tmin TIMESPAN RETURN CHANNEL A CHANNEL B CHANNEL C CHANNEL D MULTI CHANNEL DISP QUICK KEY LOCKS EXIT SAVE CHANGES DISCARD CHANGES RS 232 RS 485 OFF EVEN ODD TYPE...

Page 34: ...r display will be similar to that shown in Fig 19 To access the configuration menus and set up your system to your particular requirements press the ENTER key The processor display will now be similar...

Page 35: ...Page 27 User Guide Signal Processor LMG GS Fig 20 Access code display 238020...

Page 36: ...ayed See Fig 21 Fig 21 shows the Main Configuration Menu for a processor connected to four thermometers and fitted with a serial communications card Your system may differ from this dependant upon the...

Page 37: ...ess the ENTER key The Configuration Menu for the item you selected from the Main Configuration Menu will now be displayed Fig 22 shows the Channel A Configuration Menu for a standard System 4 Thermome...

Page 38: ...ptions available for each main item in the Configuration Menu Active Menu Denoted by blue text on a white title bar Inactive Menu Denoted by white text on a blue title bar Cursor When the cursor is a...

Page 39: ...essor LMG GS 4 5 6 7 1 2 3 Fig 23 General Configuration Menu components 238023 1 Main menu 5 Active title bar white background 2 Cursor 6 Note area shows available options 3 Sub menu 7 Help Bar 4 Inac...

Page 40: ...ER key The NOTE area at the bottom of the sub menu gives the range of available settings for the selected item iv The cursor will now become a BLOCK Use the UP and DOWN keys to select the required val...

Page 41: ...d DOWN keys to move the ucursor to the EXIT option and press the ENTER key The EXIT sub menu is displayed and you are given the choice of either saving or discarding any changes you have made to the s...

Page 42: ...vely the currently selected thermometer type may be displayed NOTE The emissivity non greyness menu option has now been replaced with the Constants menu option Pressing the ENTER key will now allow th...

Page 43: ...Page 35 User Guide Signal Processor LMG GS Fig 25 GST Constants Calibrate Mode 238025 Fig 26 GST Constants Measure Mode 238026...

Page 44: ...ed individually in an intuitive way Optimisation of constants A H4 and B H5 is undertaken via the GST surface reference probe and the APCOS PC software optimisation procedure described in the GST User...

Page 45: ...nged most frequently 3 5 1 Emissivity Quick key Pressing the key opens up the emissivity menu see Fig 27 NOTE Channels containing GST I O cards cannot have their emissivity values adjusted The emissiv...

Page 46: ...Page 38 Signal Processor User Guide LMG GS 3 5 2 Alarm Quick key Pressing the key opens up the alarm menu see Fig 28 Fig 28 Alarms menu 238028...

Page 47: ...9 Display menu 238029 NOTE The function of each quick key can be locked i e pressing the quick key accesses the relevant menu but adjustment of the settings is prevented This feature is useful in prev...

Page 48: ...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 spe...

Page 49: ...ct When the object moves from the measurement area the Track function can be switched off and the temperature value held until the next hot object appears The Track and Hold function function is contr...

Page 50: ...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...

Page 51: ...of Peak Picker time function 238032 Fig 33 Typical output of Peak Sample function 238033 ON Delay Threshold level OFF Delay Adjustable decay rate Reset mode Hold mode Temp Temp Time Time ON delay Pro...

Page 52: ...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 sto...

Page 53: ...Page 45 User Guide Signal Processor LMG GS Fig 35 Typical output of Valley Sample function 238035 IRT max Time adjustable interval 10 250 seconds Threshold Temp Valley Sample Output Temperature Signal...

Page 54: ...selected before installing the processor in a panel i To change the language setting first unscrew the six screws on the back panel of the processor Refer to Fig 10 ii If a serial communications board...

Page 55: ...s given in Fig 37 iv Insert the power supply board on right hand side and replace any thermometer channel board s in the correct slots in the processor v If a serial communications card was fitted in...

Page 56: ...Signal Processor User Guide LMG GS 6 Maintenance The Landmark Graphic GS Signal Processor is designed to be virtually maintenance free The recommended maximum period between calibration checks is 12...

Page 57: ...Guide Signal Processor LMG GS Appendix A Display Modes This section contains typical samples of the displays available from the processor Fig A1 Typical numeric display 238A01 Fig A2 Typical mixed di...

Page 58: ...Page 50 Signal Processor User Guide LMG GS Fig A4 Typical deviation chart display 238A04 Fig A3 Typical line chart display 238A03...

Page 59: ...Page 51 User Guide Signal Processor LMG GS Fig A6 Typical 4 channel bar graph display 238A06 Fig A5 Typical 4 channel numeric display 238A05...

Page 60: ...Page 52 Signal Processor User Guide LMG GS Fig A8 Typical over range display 238A08 Fig A7 Typical 4 channel deviation bar graph display 238A07...

Page 61: ...Page 53 User Guide Signal Processor LMG GS Fig A10 Typical obscuration display 238A10 Fig A9 Typical under range display 238A09...

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