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19. MAINTENANCE

Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that

is moistened with warm water and a mild detergent.

Do not disassemble the balance. Contact the local A&D dealer if the balance needs service or

repair.

Use the original packing material for transportation.

20. TROUBLESHOOTING

20-1 Checking the Balance Performance and Environment

The balance is a precision instrument. When the operating environment or the operating method is

inadequate, correct weighing can not be performed. Place a sample on the pan and remove it, and

repeat this several times. If the balance seems to have a problem with repeatability or to perform

improperly, check as described below. If improper performance persists after checking, contact the

local A&D dealer for repair.

Checking that the balance performs properly

Check the balance performance using the self-check function as described in “7-2 Self Check

Function”.

An error display appears when a malfunction is found.

Check the balance repeatability using an external weight. Be sure to place the weight in the

center of the weighing pan.

Check the balance repeatability, linearity and calibrated value using external weights with a

known value.

Checking that the operating environment or weighing method is proper

Operating environment

Is the weighing table solid enough (especially for the GF-200/300/400/600/800/1000, the

balance with a minimum weighing value of 0.001 g)?

Is the balance level? Refer to “3-1 Before Use”.

Is the operating environment free from vibration and drafts? For the GF-200/300/400/600/800/

1000, has the breeze break been installed?

Is there a strong electrical or magnetic noise source such as a motor near the balance?

Weighing method

Does the weighing pan touch the breeze ring or anything? Is the weighing pan installed

correctly?

Is the RE-ZERO key pressed before placing a sample on the weighing pan?

Содержание GF-1200

Страница 1: ...GF SERIES GF 200 GF 300 GF 400 GF 600 GF 800 GF 1000 GF 1200 GF 2000 GF 3000 GF 4000 GF 6100 GF 6000 GF 8000 Precision Balance INSTRUCTION MANUAL 1WMPD4000209C...

Страница 2: ...ated into any language in any form by any means without the written permission of A D Company Ltd The contents of this manual and the specifications of the instrument covered by this manual are subjec...

Страница 3: ...ration Gram Mode 17 6 2 Counting Mode PC 18 6 3 Percent Mode Pct 20 7 RESPONSE ADJUSTMENT SELF CHECK FUNCTION 21 7 1 Manual Response Adjustment 21 7 2 Self Check Function 22 8 CALIBRATION 23 8 1 Calib...

Страница 4: ...53 15 DENSITY MEASUREMENT 54 RS 232C Serial Interface 16 RS 232C SERIAL INTERFACE EXTERNAL INPUT 57 17 CONNECTION TO PERIPHERAL EQUIPMENT 59 17 1 Connection to the AD 8121B Printer 59 17 2 Connection...

Страница 5: ...aced on the pan has been achieved Self Check Function provided to self check the balance Data Memory Function storing weighing data or unit mass in the counting mode About weighing data 40 sets of dat...

Страница 6: ...reasonable protection against interference when this device is operated in a commercial environment If this unit is operated in a residential area it may cause some interference and under these circum...

Страница 7: ...5...

Страница 8: ...nfirm that the AC adapter type is correct for your local voltage and receptacle type Pan support receptor Weighing pan Keys Main unit AC adapter Display Reference card Main unit cover Windows communic...

Страница 9: ...hing pan on the balance as shown in the illustration above 3 Adjust the leveling feet to level the balance Confirm it using the bubble spirit level 4 Confirm that the adapter type is correct for the l...

Страница 10: ...alance away from equipment which produces magnetic fields Install the balance in a stable place avoiding vibration and shock Corners of rooms on the first floor are best as they are less prone to vibr...

Страница 11: ...und the sample Make each weighing gently and quickly to avoid errors due to changes in the environmental conditions Do not drop things upon the weighing pan or place a sample on the pan that is beyond...

Страница 12: ...tened with warm water and a mild detergent Avoid dust and water so that the balance weighs correctly Protect the internal parts from liquid spills and excessive dust 3 4 Power Supply When the AC adapt...

Страница 13: ...ABLE Switches the weighing units stored in the function table Refer to 5 WEIGHING UNITS Enters the response adjustment self check mode No function Enters the calibration mode Stores the weighing data...

Страница 14: ...8 349523125 g Troy Ounce OZt 31 1034768 g Metric Carat ct 0 2 g Momme mm 3 75 g Pennyweight dwt 1 55517384 g Grain UK GN 0 06479891 g Tael HKgeneral Singapore 37 7994 g Tael HK jewelry 37 429 g Tael T...

Страница 15: ...29 38 0 00005 Tael Taiwan 5 60 8 26 10 93 16 26 21 60 29 33 0 00005 Tael China 6 72 9 92 13 12 19 52 25 92 35 20 0 00005 Tola India 18 0 26 5 35 1 52 2 69 4 94 3 0 0001 Messghal 44 8 66 1 87 4 130 1 1...

Страница 16: ...e 13Lb 7 17oz 17Lb 13 72oz 0 01oz Troy Ounce 196 260 0 005 Metric Carat 30500 40500 0 5 Momme 1626 2160 0 05 Pennyweight 3922 5208 0 1 Grain UK 94136 125002 2 Tael HK general Singapore 161 214 0 005 T...

Страница 17: ...Press the PRINT key to enter the unit selection mode 4 Specify a unit or mode in the order to be displayed using the following keys SAMPLE key To sequentially display the units RE ZERO key To specify...

Страница 18: ...g The stabilization indicator appears when the unit is specified 5 Press the SAMPLE key to display 1Unit pC 6 Press the RE ZERO key to specify the unit of pc The stabilization indicator appears when t...

Страница 19: ...Read the value 4 Remove the sample and container from the pan Notes To use other units press the MODE key and select an appropriate unit Press the SAMPLE key to turn ON or OFF the minimum weighing val...

Страница 20: ...ple unit mass 2 Press the SAMPLE key to enter the sample unit mass storing mode Even in the storing mode pressing the MODE key will switch to the next mode 3 To select the number of samples press the...

Страница 21: ...ion The ACAI is a function that improves the accuracy of the unit mass automatically by increasing the number of samples as the counting process proceeds 8 If a few more samples are added the processi...

Страница 22: ...to cancel the weight tare The balance displays 100 0 pct 4 Place the sample to be set as the 100 reference mass on the pan or in the container 5 Press the PRINT key to store the reference mass The bal...

Страница 23: ...he function table For details refer to 10 FUNCTION TABLE To increase the response rate or to obtain a more stable display perform the following Operation 1 Press and hold the MODE key until RESPONSE i...

Страница 24: ...atically starts to check its internal performance 3 After self check the balance displays the checking result and returns to the weighing mode e g OK The example above indicates that the result of the...

Страница 25: ...0 FUNCTION TABLE Calibration test is available only when GLP output info of Data output dout is set to 1 or 2 Caution on using an external weight The accuracy of an external weight can influence the a...

Страница 26: ...ed to step 5 4 Specify the calibration weight value as follows SAMPLE key To switch the display condition to All of the segments blinking calibration weight selection mode or The last two digits blink...

Страница 27: ...he pan 8 If the GLP output info parameter of the function table is set to 1 or 2 the balance displays glp and outputs Calibration Report using the RS 232C interface or stores the data in memory For de...

Страница 28: ...nd proceed to step 4 If you use the target weight value stored in the balance proceed to step 5 4 Specify the target weight value as follows SAMPLE key To switch the display condition to All of the se...

Страница 29: ...key The balance measures the target weight and displays the measured value Do not allow vibration or drafts to affect the balance 7 The balance displays end Remove the weight from the pan 8 The balanc...

Страница 30: ...operations Switches Operation 1 Press the ON OFF key to turn off the display 2 While pressing and holding the PRINT key and the SAMPLE key press the ON OFF key The balance displays p5 3 Press the PRIN...

Страница 31: ...ings Liquid density and temperature in the density mode Note Be sure to calibrate the balance after initialization Operation 1 Press the ON OFF key to turn off the display 2 While pressing and holding...

Страница 32: ...weighing data for Data memory and Every 1 minute for Interval time 10 2 Display and Keys Display Key Description The symbol indicates that the parameter displayed is in effect When pressed and held in...

Страница 33: ...er limit Reference value Tolerance 0 1 2 3 4 0 1 2 3 Fast response sensitive value FAST MID Slow response stable value SLOW Stable when within 1 digit Stable when within 3 digits OFF ON OFF Normal Str...

Страница 34: ...ery 30 seconds Every 1 minute Every 2 minutes Every 5 minutes Every 10 minutes No output Output No output Output No pause Pause 1 6 seconds Not used Used No output AD 8121 format General data format N...

Страница 35: ...1 0 1 2 3 4 5 0 1 0 1 0 1 0 1 600 bps 1200 bps 2400 bps 4800 bps 9600 bps 7 bits even 7 bits odd 8 bits none CR LF CR A D standard format DP format KF format MT format NU format CSV format No limit 1...

Страница 36: ...or drafts Note With Hold function Hold set to ON 1 this item is used to set the stabilization range Hold function Hold Animal weighing mode This function is used to weigh a moving object such as an an...

Страница 37: ...ual response adjustment Decimal point pnt The decimal point format can be selected Auto display ON p on When the AC adapter is connected the display is automatically turned on without the ON OFF key o...

Страница 38: ...o print mode A reference zero dout ap p Auto print polarity dout ap b Auto print difference Example For weighing the added sample each time a sample is added with ar d set to 1 to adjust zero after th...

Страница 39: ...tor z A header of two characters indicates the balance condition z The polarity sign is placed before the data with the leading zeros If the data is zero the plus sign is used z The unit consisting of...

Страница 40: ...y for a stable value MT format 5if type 3 z A header of two characters indicates the balance condition z The polarity sign is used only for negative data z The weighing data uses spaces in place of th...

Страница 41: ...at Added to the Weighing Data Data number dout d no 1 This format outputs the data number just before the data is transmitted using the RS 232C interface This format consists of six characters excludi...

Страница 42: ...0 1 8 3 9 6 1 8 3 9 6 S D CR LF O L 9 9 9 9 9 9 E 1 9 9 9 9 9 9 9 9 9 9 S I E LF CR S I 9 9 9 9 9 9 9 9 CR LF O L 9 9 9 9 9 9 E 1 9 9 CR LF g CR LF W T 1 7 2 g 1 7 2 CR LF 0 0 0 0 1 7 2 CR LF 1 7 2 g...

Страница 43: ...l T aiwan T ael China T ola India Messghal Density Multi g g g g C c P p C P s S C P z z o o z o z o b b b b z z o o z o z o t o z t o z t o z t o z t c t c t c t c m m o m m o m m o m o N G N G r g N...

Страница 44: ...o reference value and tolerance value digital input Selecting a comparator mode 1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed 2 Press the SAMPLE key several times to...

Страница 45: ...Cp in 6 Press the RE ZERO key several times to display Cp in 1 7 Press the PRINT key to store the selected mode Entering the upper and lower limit values 8 With Cp Hi displayed press the PRINT key The...

Страница 46: ...End block for the weighing data 11 1 Setting the ID Number 1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed 2 Press the SAMPLE key several times to display id 3 Press th...

Страница 47: ...is info 1 When the setting is info 2 Calibration test report using an external weight Calibration test does not perform calibration When the setting is info 1 When the setting is info 2 A D TERM MODEL...

Страница 48: ...ck is output When the setting is info 1 When the setting is info 2 TERM CR LF CR Space ASCII 20h Terminator or Carriage return ASCII 0Dh Line feed ASCII 0Ah CR LF A D TERM MODEL GF 2000 TERM S N 01234...

Страница 49: ...efer to 10 FUNCTION TABLE Releasing Clr If a different type of data exists in memory when the data is stored Clr appears blinking in the upper left of the display For example you want to store weighin...

Страница 50: ...n memory 1 Set the Data memory data parameter to 2 2 The storing operation depends on the Data output mode prt parameter setting Four types of operating modes are available to store data Key mode When...

Страница 51: ...used data 2 Auto print mode A prt 1 data 2 Auto print mode B prt 2 ap a 0 2 ap b 0 2 data 2 Not used Interval memory mode prt 3 Not used data 2 int 0 8 Set each item depending on the situation as foll...

Страница 52: ...5if parameters are set properly For details refer to 10 FUNCTION TABLE and 17 CONNECTION TO PERIPHERAL EQUIPMENT 1 Press and hold the PRINT key until reCall is displayed 2 Press the SAMPLE key to dis...

Страница 53: ...emory 3 Press and hold the PRINT key until the balance enters the sample unit mass selection mode as shown below 4 Select the unit mass to be used using the following keys RE ZERO key To increase the...

Страница 54: ...or for measuring density The built in underhook is revealed by removing the plastic cap on the bottom of the balance Use the underhook as shown below Caution Do not apply excessive force to the underh...

Страница 55: ...nt Confirming the coefficient 4 The current coefficient is displayed with the first digit blinking When it is not to be changed press the CAL key and proceed to step 6 When it is to be changed press t...

Страница 56: ...liquid Select the liquid density input method from the function table below The function table is available only when the density mode is selected Class Item Parameter Description 0 Water temperature...

Страница 57: ...d return to the density mode Note The range to set the density is 0 0000 to 1 9999 g cm3 Measuring the density In the density measurement the balance displays the weight of a sample in air the weight...

Страница 58: ...the SAMPLE key is disabled 4 Remove the sample from the upper pan and place it on the lower pan in liquid When the value displayed on the balance becomes stable press the SAMPLE key to confirm the val...

Страница 59: ...dd Data bits 7 bits None Data bits 8 bits Stop bit 1 bit Code ASCII Pin connections Pin No Signal name Direction Description 1 FG Frame ground 2 RXD Input Receive data 3 TXD Output Transmit data 4 RTS...

Страница 60: ...erform the same function as pressing the PRINT and RE ZERO keys respectively by connecting each pin to pin 7 for at least 100 ms Use of example The external input connector AX HDB 25P CTF and the foot...

Страница 61: ...m auto feed 5if type 0 Factory setting A D standard format When MODE 3 of the AD 8121B printer is used dout 5 id 0 1 Select whether or not the ID number is output dout at f 0 1 Select whether or not a...

Страница 62: ...GLP report RsKey Can transmit the weighing data output from the balance directly to other application software such as Microsoft Excel Can be used with most application software Can receive the balan...

Страница 63: ...d in the balance s memory Later all of the weighing data stored can be output to a personal computer at one time 6 Using a personal computer as an external indicator With the RsKey test mode function...

Страница 64: ...the tare value set by the TR or PT command R Same as the RE ZERO key SMP Same as the SAMPLE key U Same as the MODE key T Same as the RE ZERO key TR Tares the balance Cancels the container s weight Ava...

Страница 65: ...balance receives a command to request data and can not process it the balance transmits an error code EC Exx When the balance receives a command to request data and can process it the balance outputs...

Страница 66: ...segments are displayed Personal computer Time Balance ON command N CR LF Command received Command completed AKCR LF AKCR LF O All segments Weighing mode Zero display In process Personal computer Time...

Страница 67: ...alance R command R CR LF AKCR LF AKCR LF CR 1 LF 1 E C E When the CAL command is received the balance returns to the weighing mode Error code CAL command A C L CR LF In process Command received Comman...

Страница 68: ...ter Time Balance R command R CR LF AKCR LF AKCR LF Place a container Zero display TR command R CR LF AKCR LF AKCR LF T Tares CR LF S command R PT command P T CR LF In process Command received Command...

Страница 69: ...the balance sets the CTS line to Lo The balance confirms the level of the RTS line before outputting a set of data If the RTS level is Hi the balance outputs data If the RTS level is Lo data is not ou...

Страница 70: ...ck the balance performance using the self check function as described in 7 2 Self Check Function An error display appears when a malfunction is found Check the balance repeatability using an external...

Страница 71: ...se 20 2 Error Codes Display Error code Description EC E11 Stability error The balance can not stabilize due to an environmental problem Prevent vibration drafts temperature changes static electricity...

Страница 72: ...nal error Indicates an internal error as the result of self check function Repair is required Contact the local A D dealer Blinking Memory full The amount of weighing data in memory has reached the ma...

Страница 73: ...ically incorrect Confirm the command EC E07 Parameter setting error The received data exceeds the range that the balance can accept Confirm the parameter range of the command Other errors If the error...

Страница 74: ...mes second Minimum unit mass 0 001 g Counting mode Number of samples 10 25 50 or 100 pieces Minimum 100 reference mass 0 100 g Percent mode Minimum 100 display 0 01 0 1 1 Depends on the reference mass...

Страница 75: ...nd or 10 times second Minimum unit mass 0 01 g 0 1 g Counting mode Number of samples 10 25 50 or 100 pieces Minimum 100 reference mass 1 00 g 10 0 g Percent mode Minimum 100 display 0 01 0 1 1 Depends...

Страница 76: ...lly Driver installation is not necessary To perform bi directional communications using WinCT to output the statistical data or GLP to a personal computer by using the personal computer USB interface...

Страница 77: ...t switch Used to externally transmit a RE ZERO or PRINT signal to the balance AX USB 25P EX USB converter Adds a COM port to a PC Enables bi directional communication between the PC and the balance wh...

Страница 78: ...f those are found to be charged discharge them using the AD 1683 DC static eliminator AD 1689 Tweezers for calibration weight This option is used when calibrating the balance using an external weight...

Страница 79: ...77 23 EXTERNAL DIMENSIONS...

Страница 80: ...the balance a unit of minimum weighing value Tare To cancel the weight of a container which is not included in the weighing data Mode Balance operational function Re zero To set the display to zero GL...

Страница 81: ...r 75 B Breeze break 3 7 9 68 Breeze ring 7 68 Bubble spirit level 6 7 C Calibration 23 78 Calibration test 26 Capacity indicator 3 11 35 Comparator indicators 11 Comparator function 42 CSV format 39 D...

Страница 82: ...e characteristic 21 Re zero 78 RS 232C serial interface 57 RsCom 60 RsKey 60 S Self check function 22 Sensitivity drift 72 73 78 Stability band width 34 Stabilization time 78 Stable value 21 34 78 Sta...

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