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7

INTRODUCTION

INTRODUCTION

INTRODUCTION

INTRODUCTION

INTRODUCTION

This manual covers Installation, Operation and Troubleshooting for the Ohaus Preci-
sion Advanced Series of Electronic balances, Models GT4100G, and GT4100DG.
Suffixes after the basic model number are: D = Moveable FineRange

TM

, G=Grain

Applications. To ensure proper operation of the balance, please read this manual
completely.

DESCRIPTION

DESCRIPTION

DESCRIPTION

DESCRIPTION

DESCRIPTION

The Ohaus Precision Advanced GT Series balances are precision weighing instru-
ments, designed to be versatile, accurate, easy to operate and will provide years of
service with virtually no maintenance. The Precision Advanced series is constructed
using a die-cast aluminum base finished with a durable corrosion resistant epoxy
powder paint. It contains solid-state precision electronics PC boards, and a seven and
a half, 0.45 inch digit, Vacuum Fluorescent display. Each balance operates through
a series of menus which enhances operation. A built in lockswitch prevents preset
settings from being changed.

FEATURES

Precision Advanced balances contain four main display menus which enable you to
calibrate and configure the balance for specific operating requirements.

MENU

MENU

MENU

MENU

MENU When

switch is pressed and released with MENU displayed, allows

access to the calibration, user, setup and print menus..

CALIBRATION

CALIBRATION

CALIBRATION

CALIBRATION

CALIBRATION Menu - Allows the balance to be calibrated by using either Span ,
User or Linearity calibration methods. A Test function is used to verify the last
calibration.

USER

USER

USER

USER

USER Menu - Allows the balance to be set for environmental conditions. Reset,
averaging level, stability range, auto-zero and beep (sound) functions can be set.

SETUP

SETUP

SETUP

SETUP

SETUP Menu - Allows the balance to be customized for specific weighing functions.

PRINT

PRINT

PRINT

PRINT

PRINT Menu - Allows the selection of parameters under which the balance will
interface to a computer or a printer.

Each of these menus contain selectable parameters which can be entered via the front
panel switches. Storing of the parameters is accomplished by selecting

End

End

End

End

End

at the

completion of all selections in a particular menu. For a detailed description of each
feature, refer to the individual menus in this manual.

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Содержание GT4100DG

Страница 1: ...Instruction Manual PRECISION Advanced Electronic Balances Models GT4100G and GT4100DG Ohaus Corporation 29 Hanover Road Florham Park NJ 07932 0900 ...

Страница 2: ...E HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS OPERATION OF THIS EQUIPMENT IN A RESIDENTIAL AREA IS LIKELY TO CAUSE HARMFUL INTERFERENCE IN WHICH CASE THE USER WILL BE REQUIRED TO COR RECT THE INTERFERENCE AT HIS OWN EXPENSE THIS DIGITAL APPARATUS DOES NOT EXCEED THE CLASS A LIMITS FOR RADIO NOISE EMISSIONS FROM DIGITAL APPARATUS AS SET OUT IN THE INTERFERENCE CAUSING EQUIPMENT STANDARD ENTITLED D...

Страница 3: ...ed for Operation of the Balance 11 Navigating the Menus 12 Turning the Balance On 13 Display Indications 13 Stabilization 14 Moveable FineRangeTM Model GT4100DG 14 Weighing 14 ReZero 14 Test Weight Mode 15 Dockage Mode 15 Entering and Reentering Dockage Mode 16 FUNCTIONS AND MODES OF OPERATION 17 CALIBRATION MENU 18 Calibration Menu Protection 18 Calibration Masses 18 Span Calibration 19 Linearity...

Страница 4: ...te 30 Lockswitch 31 List 32 PRINT MENU 32 Print Menu Protection 33 Reset 33 Communication 33 Baud Rate 34 Data Bits 34 Parity 34 Stop Bits 35 Good Laboratory Practices GLP 35 Print Options 36 Auto Print Feature 36 Initialize 36 Print Stable Data Only 38 Print Numeric Data Only 38 Time 39 Date 39 Reference 39 List 40 MENU LOCK OUT PROTECTION 40 TYPE APPROVED BALANCE SEALING 41 ...

Страница 5: ...dware 42 Output Formats 42 RS232 Commands 42 CARE AND MAINTENANCE 45 TROUBLESHOOTING 45 Error Codes List 46 SERVICE INFORMATION 47 PARTS INFORMATION 48 REPLACEMENT PARTS 48 ACCESSORIES 48 SPECIFICATIONS 49 LIMITED WARRANTY 51 ...

Страница 6: ...6 ...

Страница 7: ...ed FEATURES Precision Advanced balances contain four main display menus which enable you to calibrate and configure the balance for specific operating requirements MENU MENU MENU MENU MENU When switch is pressed and released with MENU displayed allows access to the calibration user setup and print menus CALIBRATION CALIBRATION CALIBRATION CALIBRATION CALIBRATION Menu Allows the balance to be calib...

Страница 8: ... The leveling feet are located under the front of the balance Adjust the leveling feet until the bubble ap pears in the center circle of the indicator INSTALLATION INSTALLATION INSTALLATION INSTALLATION INSTALLATION Environment Environment Environment Environment Environment The balance should always be used in an environment which is free from excessive air currents corrosives vibration and tempe...

Страница 9: ...her than the one furnished type of power cord other than the one furnished type of power cord other than the one furnished type of power cord other than the one furnished type of power cord other than the one furnished DO NOT create a safety hazard by defeating the grounding feature DO NOT create a safety hazard by defeating the grounding feature DO NOT create a safety hazard by defeating the grou...

Страница 10: ...ss Extended Press Extended Press Extended Press Turns the balance off Press and Release Press and Release Press and Release Press and Release Press and Release Pressing this button will momentarily display the current memory weight Extended Press Extended Press Extended Press Extended Press Extended Press Takes the current net weight on the platform and sets this value as the 100 percent memory va...

Страница 11: ...RELEASE NORMAL PRESS AND RELEASE NORMAL PRESS AND RELEASE MULTIPLE PRESSES MULTIPLE PRESSES MULTIPLE PRESSES MULTIPLE PRESSES MULTIPLE PRESSES PRESS AND HOLD FOR DESIRED DISPLAY PRESS AND HOLD FOR DESIRED DISPLAY PRESS AND HOLD FOR DESIRED DISPLAY PRESS AND HOLD FOR DESIRED DISPLAY PRESS AND HOLD FOR DESIRED DISPLAY Display Area Display Area Display Area Display Area Display Area DISPLAY AREA AS A...

Страница 12: ... END END END END END 8 8 8 8 8 ACCEPTS ACCEPTS ACCEPTS ACCEPTS ACCEPTS STORES NA NA NA NA NAVIGA VIGA VIGA VIGA VIGATING TING TING TING TING THE MENUS THE MENUS THE MENUS THE MENUS THE MENUS Three buttons on the balance are used to navigate through the menus Performs three functions 1 When intially pressed turns the balance on 2 When the balance is on pressing and holding this button will alternat...

Страница 13: ...applied 2 Display Indications Display Indications Display Indications Display Indications Display Indications The following table describes each of the display indicators DISPLAY INDICATORS DISPLAY INDICATORS DISPLAY INDICATORS DISPLAY INDICATORS DISPLAY INDICATORS g g g g g grams lb lb lb lb lb pounds oz oz oz oz oz ounces UNIT 1 UNIT 1 UNIT 1 UNIT 1 UNIT 1 lb bu dockage F M O O O O O center of z...

Страница 14: ...feature When the weight of the object on the platform exceeds the capacity limit of the Moveable FineRangeTM the balance will automatically change to the coarse range To return to the fine range 1 The load is reduced to below the capacity limit of the fine range 2 CENTER OF ZERO STABILITY INDICATOR Re Zero Re Zero Re Zero Re Zero Re Zero When weighing material or objects that must be held in a con...

Страница 15: ...mple and process it to remove any dockage material NOTE NOTE NOTE NOTE NOTE While the sample is being processed the balance may be used in other weighing modes without disturbing the weight stored in memory See Exiting and Reentering Dockage Mode 5 Fill the container with the material from which the dockage foreign material has been removed and place on the platform The balance will display the we...

Страница 16: ...kage Mode Exiting and Reentering Dockage Mode Exiting and Reentering Dockage Mode If it desired to use the balance for other weighing modes while a dockage sample is being processed perform the following steps 1 To access other weighing modes for desired display 2 Toreenterthedockagemode until appears ...

Страница 17: ...CTIONS AND MODES OF OPERATION FUNCTIONS AND MODES OF OPERATION Each submenu of the GT Balance contains numerous selections which can be set for specific operations To customize the operation of the balance for specific measure ments functions and printing it is necessary to make selections in each menu The following illustration identifies the major items in each menu The factory default settings ...

Страница 18: ...ta to be tested against the current mass being used for the test The following figure illustrates the sequence in which submenus appear on the Calibration menu Item shown bolded is a default setting CALIBRATION MENU CALIBRATION MENU CALIBRATION MENU CALIBRATION MENU CALIBRATION MENU CAL SPAN 0 25 50 75 or Span Weight 100 100 100 100 100 CAL LINEARITY 0 Linearity Span Weight CAL USER Enter CAL TEST...

Страница 19: ... in a weighing mode Linearity Calibration Linearity Calibration Linearity Calibration Linearity Calibration Linearity Calibration 1 Repeat steps 1 and 2 of Span Calibration above 2 3 no mass on platform 4 valueofmasswhich must be placed on the platform 5 Place mass on platform 6 value of next mass which must be placed on the platform 7 Place mass on platform 8 Do not disturb the Do not disturb the...

Страница 20: ...n value If value is less an error will display 8 After the digit has been accepted is displayed 9 Place calibration mass on platform 10 Do not disturb the balance when C is Do not disturb the balance when C is Do not disturb the balance when C is Do not disturb the balance when C is Do not disturb the balance when C is displayed displayed displayed displayed displayed 11 Remove mass from platform ...

Страница 21: ...ENU RESET YES YES YES YES YES NO AL 0 1 1 1 1 1 2 3 STABILITY 5d 5d 5d 5d 5d 1d 2d 5d AUTO ZERO OFF 5d 5d 5d 5d 5d 1d 3d BEEP ON OFF OFF OFF OFF OFF END User USER MENU USER MENU USER MENU USER MENU USER MENU The User menu is used to adapt the balance to environmental conditions It contains submenus which enable you to turn features on or off and program balance parameters Reset changes all submenu...

Страница 22: ... OFF OFF Reset does not appear if the menu has been locked out 1 2 3 4 5 to select or 6 If is selected the balance signals a double short beep Averaging Level Averaging Level Averaging Level Averaging Level Averaging Level Averaging level compensates for vibration or excessive air currents Factory default setting is shown in bold type AL 0 reduced stability fastest stabilization time AL AL AL AL A...

Страница 23: ... displayed Smallest range stability indicator is ON only when displayed weight is within 5 divisions weight is within 5 divisions weight is within 5 divisions weight is within 5 divisions weight is within 5 divisions 1 d Reduced range 2 d Normal range 5 d Largest range stability indicator is ON even though displayed weight changes slightly When the RS232 interface is configured to print stable dat...

Страница 24: ...vision 3 d Sets threshold to 3 divisions To view or change the auto zero setting 1 Access the Auto Zero submenu 2 3 to select through 4 Beep Function Beep Function Beep Function Beep Function Beep Function A beep sound feature is a tone or series of tones emitted to annunciate various balance conditions The table below defines when the beeps are sounded if turned ON The default setting for the Bee...

Страница 25: ...submenus which enable you to turn features on or off and program balance parameters Reset changes all submenus to original factory default settings Reset does not appear if menu has been locked out LFT sets the balance for type approved operation SEL selection specifies one of three weighing units Additional submenus are Statistics Good Laboratory Practices Time Date Lock Switch List and End The f...

Страница 26: ...lock out the Setup menu refer to the section titled Menu Lock Out Protection Reset Reset Reset Reset Reset This submenu enables you to reset all all all all all Setup menu selections to the factory default settings shown below Reset does not appear if the menu has been locked out Function Default Reset Yes LFT Off Unit Selection grams Statistics All Off GLP Off Time U S Date U S Lockswitch Cal Yes...

Страница 27: ...s weighing units 1 Access the menu 2 to select first unit 3 to select or next unit status is displayed 4 Set each unit ON or OFF by repeating steps 2 and 3 5 Type Approved LFT Type Approved LFT Type Approved LFT Type Approved LFT Type Approved LFT LFT can be set to ON or OFF Selecting ON automatically sets the parameters shown in the table to conform to type approved requirements For sealing metho...

Страница 28: ... can be individually set ON or OFF 1 To select one or more parameters access the menu 2 3 Enable allows the statistics feature to be turned off without losing the individual settings programmed into memory 4 5 to select or 6 7 8 9 10 11 to select other parameters 12 to accept 13 to select or 14 15 Continue the same procedure to set Sum High Low and Difference para meters and finish by selecting ...

Страница 29: ...ail purposes and will indicate date and time The Balance ID number is a factory set number It should be noted that the ID number and Project number must be entered in the Print GLP submenu before printed data is available Since all of the settings for the GLP submenu are done in a similliar manner only one example is shown 1 Access the submenu under SETUP Options menu 2 3 4 to select or 5 6 Repeat...

Страница 30: ...e year each separated by a period The default setting is US Standard 1 Access the submenu which is under Setup submenu 2 3 4 to select or European 5 6 7 first two digits are flashing Time Cont Time Cont Time Cont Time Cont Time Cont 7 first two digits are flashing 8 or to change flashing digits to current local hour 9 flashes the last two digits NOTE NOTE NOTE NOTE NOTE will back up display 10 or ...

Страница 31: ...nd Print Print Print Print Printmenuscanbeindividuallylockedonoroff byselectingtheappropriate menu and then locked by the switch located under the front of the control panel See Menu Lockout Section Cal Test under Calibration remains functional with the Lockswitch On or Off Before performing the lockout procedure decide which functions of the balance are to be locked on or off 1 Access the submenu...

Страница 32: ...2400 2400 2400 2400 2400 4800 9600 Data Bits 7 7 7 7 7 or 8 Parity Bit Odd Even None None None None None 1 0 Stop Bits 1 or 2 2 2 2 2 End Comm GLP ID Project End GLP PRINT MENU PRINT MENU PRINT MENU PRINT MENU PRINT MENU The Print menu provides a number of options which includes reset communications good laboratory practices and list Reset sets all submenus contained in the Print submenu to factor...

Страница 33: ...ons to the factory default settings shown below Reset does not appear if the menu has been locked out Function Default Baud Rate br2400 Data Bits 7 data Parity none Stop Bits 2 stop Auto Print OFF Autp Print interval 1 second Non Print Low Limit 0 Non Print High Limit 0 Stable data Only OFF Numeric Data Only OFF Time OFF Date OFF 1 2 3 4 5 to select or 6 If is selected the balance signals a double...

Страница 34: ...d Parity 9 1 Access the submenu 2 accept 3 to change setting 4 Parity Parity Parity Parity Parity Parity can be set to Odd Even None or a marker of 0 or 1 The default setting is none To set parity proceed as follows 1 Access the submenu 2 accept 3 to change setting Baud Rate Baud Rate Baud Rate Baud Rate Baud Rate This submenu is used to select the desired baud rate There are five available baud r...

Страница 35: ...its is currently 8 or 10 data or parity bits must be changed Good Laboratory Practice GLP Good Laboratory Practice GLP Good Laboratory Practice GLP Good Laboratory Practice GLP Good Laboratory Practice GLP This submenu enables the storage of an identification number and or a project number When entered into the balance the identification number and project number are available when printing The re...

Страница 36: ...e Auto Print Feature Auto Print Feature When enabled the Auto Print feature causes the balance to automatically output display data in one of three ways continuously at user specified time intervals or upon stability To select one of these Auto Print methods or to turn the feature off 1 Access the submenu 2 to accept current setting 3 or 4 NOTE NOTE NOTE NOTE NOTE If you select interval to automat...

Страница 37: ...ange the value to any number from 9 to 9 A minus sign will light to indicate a negative value 9 When the desired value is displayed to accept it and the next digit will begin flashing 10 Set all digits in the same manner If an error is made to backup to the desired digit and change it To exclude data To exclude data To exclude data To exclude data To exclude data WITHIN SELECTED RANGE WITHIN SELEC...

Страница 38: ...a Only Print Stable Data Only When enabled this feature permits only stable display data to be output To set the feature ON or OFF proceed as follows 1 Access the submenu under the Print Options menu 2 to accept 3 to select or 4 Print Numeric Data Only Print Numeric Data Only Print Numeric Data Only Print Numeric Data Only Print Numeric Data Only This submenu is used to select numeric data only or...

Страница 39: ...lect or 4 Time Time Time Time Time When the Time function is set ON allows the balance to output the current time to the printer To set the Time feature ON or OFF proceed as follows 1 Access the submenu under the Print Option menu 2 to display current status 3 to select or 4 Date Date Date Date Date When the Date function is set ON allows the balance to output the current date to the printer To se...

Страница 40: ...d using the Lockswitch located on the PC board inside the balance The Lockswitch locks out menus selected in the Lockswitch menu The default setting for the Lockswitch is OFF 1 Turn the display off and unplug the power cord WARNING To avoid shock hazards always be certain that the power cord is discon nectedBEFOREremovingthebalance cover Even though the balance may have been switched OFF high volt...

Страница 41: ...ices consult local Weights and Measures officials to determine sealing method requirements After the balance has been set up properly and the menus are locked out see section titled Type Approved LFT proceed as follows to seal the balance Turn OFF and unplug the balance Remove Platform and Platform Support LEAD SEAL METHOD LEAD SEAL METHOD LEAD SEAL METHOD LEAD SEAL METHOD LEAD SEAL METHOD 1 Pass ...

Страница 42: ...5 to pin 6 to defeat it Output Formats Output Formats Output Formats Output Formats Output Formats Data output can be initiated in one of three ways 1 By pressing PRINT 2 Using the Auto Print feature 3 Sending a print com mand P from a computer TheoutputformatisillustratedintheRS232 command table which follows PRINT TARE 1 5VDC 5 mA max 2 Data Out TXD 3 Data In RXD 4 Tare External signal 5 Clear T...

Страница 43: ...el to x where x 0 to 3 see table L L L L L Begin linearity calibration M M M M M Same effect as pressing mode button xM xM xM xM xM Places balance in mode x where x 1 to 13 see table If unit or mode is not already enabled command will be ignored RS232 COMMAND TABLE RS232 COMMAND TABLE RS232 COMMAND TABLE RS232 COMMAND TABLE RS232 COMMAND TABLE Field Mode Stab CR LF Length 5 1 1 1 blank if stable i...

Страница 44: ...x for percent mode x must be in grams Command is ignored if percent mode is disabled If percent mode is enabled balance will automatically switch to percent mode display Esc L Esc L Esc L Esc L Esc L Prints listing of Setup and Print menu settings Esc R Esc R Esc R Esc R Esc R Resets Setup and Print menus to factory defaults CAUTION This will reset RS232 configuration Esc S Esc S Esc S Esc S Esc S...

Страница 45: ...on table surface SYMPTOM Unit will not turn on Incorrect weight reading Cannot display weight in desired unit or cannot access desired weighing mode Unable to store menu settings changes RS232 interface not working Random segments displayed or display locks up Unable to change settings Unstable readings Error message display REMEDY Check power cord connections Press with no weight on the platform ...

Страница 46: ...on Recalibrate with correct weights RS232 Errors RS232 Errors RS232 Errors RS232 Errors RS232 Errors 4 0 Bad RS232 frame Check RS232 menu parameters and correct 4 4 RS232 buffer is full if installed May occur if no printer or computer is connected to the interface To clear buffer turn balance off or enter Print menu and select END 4 5 Function is disabled by the Lock switch User Errors User Errors...

Страница 47: ...p User and Print menus when RS232 is installed settings If possible try to enter menus and exit using END torestoremenusettings Maybecausedbyafaultycomponent orinrarecases a severe static charge If error persists balance must be serviced 9 8 Hardware error causing invalid calibration data checksum Balance may need recalibration particularly linearity calibration If error persists balance must be s...

Страница 48: ...Tolerance Calibration Masses ASTM Class 1 Tolerance Calibration Masses ASTM Class 1 Tolerance Calibration Masses ASTM Class 1 Tolerance 4kg 49046 11 2kg 49026 11 Security Device 76288 00 Scoops Scoops Scoops Scoops Scoops PARTS INFORMATION PARTS INFORMATION PARTS INFORMATION PARTS INFORMATION PARTS INFORMATION If you require replacement parts or would like to purchase accessories please call Ohaus...

Страница 49: ...ev g 0 01 0 01 0 05 Linearity g 0 02 0 02 0 1 Tare range Full capacity by subtraction Stabilization time 2 seconds Sensitivity drift 10 30 C 3 ppm C 4 ppm C Operating temperature 50 to 104 F 10 to 40 C Non type approved 50 to 86 F 10 to 30 C Type approved Calibration Auto calibration Power requirements 100 120 220 240 V ac 50 60 Hz Display in cm Vacuum fluorescent 0 4 1 high Platform size W x H x ...

Страница 50: ...50 ...

Страница 51: ...ed to radioactive or corrosive materials has foreign material penetrating to the inside of the product or as a result of service or modification by other than Ohaus The warranty period shall begin at the date of installation or three months from shipment to the buyer whichever occurs first A properly completed Warranty Registration Card must be received by Ohaus within 30 days from date of purchas...

Страница 52: ...ad ENGLAND Florham Park NJ 07932 USA Tel 44 0 1954 251343 Tel 973 377 9000 Fax 44 0 1954 250205 Fax 973 593 0359 With offices in Germany France Spain Italy Poland Canada Mexico and Japan P N 76769 19 R1097 Ohaus Corporation 1995 1997 all rights reserved ...

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