A&D GH-120/GH-200/GH-300/GH-202/GH-252 manual Calibration Group

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8.Calibration

8.1.Calibration Group

Calibration

Automatic self calibration (Calibration due to changes in temperature)

Calibration using the internal mass (One-touch calibration)

Calibration using an external weight that you have

Calibration test

Calibration test using the internal mass

Calibration test using target mass that you have

Correction of the internal mass value

Correction of the internal mass value

Caution

Do not allow vibration or drafts to affect the balance during calibration. Calibration test does not perform calibration.

To output the data for GLP using the RS-232C interface, set "GLP output (info)" of "Data output (dout)". Refer to "10. Function Table". Time and date can be added to GLP report. If the time or date is not correct, adjust them. Refer to "10.7 Clock and Calendar Function".

Calibration test is available only when "GLP output (info)" of "Data output (dout)" is set . The calibration and calibration test data can be stored in memory. To store them, set "Data memory (data)". Refer to "12. Data Memory" for details.

Caution on using an external weight

The accuracy of an external weight can influence the accuracy of weighing. Select a mass for calibration and calibration test from the following table.

Model		Usable calibration mass				Adjustable range
GH-120		50g,	100g*			-15.0 mg to +15.9 mg
GH-200			100g,	200g*		-15.0 mg to +15.9 mg
GH-300			100g,	200g*,	300g
GH-202, GH-252	20g,	50g,	100g,	200g*		-15.00 mg to +15.99 mg

The calibration mass in bold type: factory setting

The calibration mass value can be adjusted within the range above.

Display

This indicator means "In process of measuring calibration data".

Do not allow vibration or drafts to affect the balance while the indicator is displayed.

About the internal mass

The internal mass may change due to corrosion or other damage caused by the operating environment, or due to aging. Check the internal mass periodically and correct the internal mass value if necessary.

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Contents 1WMPD4000891C GH-120 GH-200 GH-300 GH-202 GH-252Page Contents Interface And Communication Underhook Density MeasurementAbout This Manual IntroductionCompliance FeaturesCompliance With FCC Rules Compliance With EMC DirectivesPage Unpacking the Balance Installing the Balance PrecautionsBefore Use Shock During UseAfter Use Power SupplyKey When pressed and released When pressed and held Display Symbols and Key OperationDisplay Key operationUnits Weighing Units101 00001 Changing the Units Counting mode Pcs Percent mode Densitymode Press the PrintExamples Unit Display Gram Balance displaysUnit setting example Basic Operation Gram Mode Precautions for the weighing operationRead . Display symbols and Key operation before operation WeighingWeighing range Available minimum display Dual Range01mg 1mgStoring a sample unit mass Weighing input mode Counting Mode PCSCounting operation Mark turns off after Unit mass is improved Repeat Counting mode using the Acai functionSelecting the percent mode Percent Mode %Storing the 100% reference mass Reading the percentageAutomatic Response Adjustment Response AdjustmentAdvise Key until Manual Response AdjustmentDisplayed, then release the key Press Key again quicklyCalibration Group CalibrationAutomatic Self Calibration Automatic self calibration due to changes in temperatureOne-Touch Calibration MarkPress and hold the CAL Key until is CC Calibration Test Using the Internal MassCalibration Using an External Weight Key................. The key To cancel the operation Calibration Test Using an External WeightKey ..............The key to store the new mass value Even if the AC adapter is removed,Correcting the Internal Mass Value Permit or Inhibit Function Switch and InitializationInitializing the Balance Press the Print key To cancel this operation, pressKey to display Function Table Setting the Function Table Display symbol and keysFunction table is displayed Press Setting procedureKey to select a class Press Key to enter the class Key to select a item PressSetting example Details of the Function Table Int Factory settingsData output Time/Date output ID number outputAK, Error code 5if TimeoutErCd Interface Ct5Description of the Class Environment, Display Key mode Description of the Item Data Output ModeStream mode Auto print modes a and BDescription of the Item Data Format Interval memory modeStandard format DP Dump print formatMT format KF formatNU numerical format Data Unit Terminator Stable value Unstable valueData number CSV formatDate TimeNegative error Space Positive errorData Format Examples Stable Unstable OverloadUnits Clock and Calendar Function Setting the timeOperation Confirming the timeQuitting the operation Setting the dateSet the date Store ID Number and GLP Report Setting the ID NumberGLP Report Calibration report using the internal massKey operation Balance returns to weighing mode after this test Calibration test report using an internal massCommad Calibration report using an external weight When using preset target value, proceed to step Calibration test report using an external weightTitle block Title block and end blockWeighing data Data Memory Returns to the weighing modeReleasing Clr or err Press and hold the Print key until the keyStoring the weighing data Data Memory for Weighing DataMemory full Interval memoryParameter settings for each output mode are as follows Setting the function tableAdditional parameter settings, as follows Enabling the data memory functionTransmitting all memory data at one time Recalling the memory dataDeleting all memory data at one time Storing the calibration and calibration test data Data Memory for Calibration and Calibration TestTransmitting the memory data Deleting data stored in memoryUnderhook Formula to obtain the density Density MeasurementPrior to measurement Changing the function table Density of a liquidEntering the density of a liquid Relation between the water temperature and densityOutput or store Density display Turns off. lights Measuring the densityPress the modes Key to proceed to otherRS-232C Interface Standard Input and Output InterfaceSub 25 pin assignments Connection to an AD-8121B printer Connection to Peripheral EquipmentUsing the WinCT software, the balance can do the following Using Windows Communication Tools Software WinCTConnection to a computer and the use of WinCT RsComCommand List CommandsControl Using CTS and RTS Acknowledge Code and Error CodesSettings Related to RS-232C On command turning on the balance Command ExamplesCommand Re-zeroing the display Error code CAL command Calibration with internal massWeighing with a tare Command ?PT command Net value Tare valuePT command to set a target weight of 10 g Zero display Command ExecutionZero Error Codes MaintenanceTreatment of the Balance Unit mass error Sample mass errorAutomatic response adjustment zero error Automatic response adjustment unstable errorOther Display Checking that the balance performs properly Checking the Balance Performance and EnvironmentAsking for Repair Specifications Unit mm External DimensionsGH-02 USB interface Options and Peripheral EquipmentGH-08 Ethernet Interface AD-8121B PrinterAD-1683 DC Static Eliminator AD-1653 Density Determination KitAX-USB-9P-EX USB Converter 9970 g/cm3AX-T-314A-S External key Plug AX-SW128 Foot switchOther options Terms Terms/IndexIndex 5pd Out Options5tart Tare PU5eMemo Memo