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A&D HW-100KGL, Instruction Manual

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A&D HW-100KGL Instruction Manual Download Page 18

HW-G Instruction Manual Page 16

HW-G OZIM v1a

Set switch.
Can be used to turn the comparator on/off. (Refer to 

f6

 )

Counting mode, it is used to enter the mode to store the unit mass.
Percentage mode, it is used to enter the mode to store the 100%
mass.
In the full/dribble batch function, it is used as a start switch.
In the preset tare, and selecting calibration mass, it is used to
select a figure.

Mode switch.
Used to change the current unit.
While setting modes, this switch is used for “storing a parameter
and proceeding the next step”.

F switch
Full/dribble batch function it is used to finish the process.
(Refer to 

f10

 )

Hold switch. (Refer to 

f12

 )

Setting a preset tare, selects polarity (+,-).

Print switch.
Used to print or output data. (Refer to 

f5

, 

f9

 )

Used to enter the function table

Used to enter the mode to set a preset tare

Used to perform paper feed for the optional printer for type V.

Summary of Contents for HW-100KGL

Page 1: ...H HW W G G S Se er ri ie es s D Di ig gi it ta al l P Pl la at tf fo or rm m S Sc ca al le es s Instruction Manual 0Z1M v1a HW 10KGL HW 10KGV HW 60KGL HW 60KGV HW 100KGL HW100KGV HW 200KGL HW 200KGV ...

Page 2: ......

Page 3: ...Type L with Batteries 18 7 2 Tare and Net Display 19 7 2 1 Semi Automatic Tare Input by Weighing 19 7 2 2 Preset Tare Digital Input of Known Tare 19 7 3 Mode Switch Changing Unit and Mode 20 8 Counting Mode 21 8 1 Storing a Unit Mass 21 8 2 Counting the number of articles 22 9 Percentage Mode 23 9 1 Storing a 100 Mass 23 9 2 Reading Percentage 24 10 Accumulation Function 25 10 1 Preparation Settin...

Page 4: ...or Setting Parameters 43 15 2 Parameter List 44 16 RS 232C Serial Interface 48 16 1 Data Format 49 16 2 Stream Mode 51 16 2 1 Preparation and Performance Examples 51 16 3 Command mode 52 16 3 1 Command List 52 16 4 Preparation Setting Parameters 55 17 Options 56 17 1 RS 232C Relay output Buzzer OP 03 56 17 2 RS 422 RS 485 Relay output OP 04 57 17 2 1 Communication Format 59 17 2 2 Command List 59 ...

Page 5: ...g device pursuant to Sub part J of Part 15 of FCC rules These rules are designed to provide reasonable protection against interfer ence when this equipment is operated in a commercial environment If this unit is operated in a residential area it might cause some interference and under these circumstances the user would be required to take at his own expense whatever measures are necessary to elimi...

Page 6: ...rcentage mode function displays the mass of an item as a percentage of a stored 100 mass The accumulation function accumulates each weighing value and counts the number of weighings The comparator function compares the display value with the upper limit value HI and the lower limit value LO and displays the result The result can output if option OP 03 is installed The simple batch function or full...

Page 7: ...ducts Pan Caution Do not pull the load cell cable 5mm allen wrench All Accessories Refer to the accessries on page 6 The combination of accessories depends upon the model AC Adaptor Please confirm that the AC adaptor type is correct for your local voltage and receptacle type Display unit cover 14 3003217 Caution Do not pull the load cell cable Caution Do not pull the load cell cable Base Unit ...

Page 8: ...ual Type V HW 60KGV Display unit cover HW 100KGV 5mm Allen wrench HW 200KGV Instruction manual HW 10KGL Display unit cover AC adaptor Instruction manual Type L HW 60KGL Display unit cover HW 100KGL 5mm Allen wrench HW 200KGL AC adaptor Instruction manual 3 1 Accessories and Options list Accessories for HW G series ...

Page 9: ...er Connector JA TCP0586 OP 04 RS422 485 interface Relay output Connector TM BLA9 AC adaptor OP 06 Built in printer for type V Paper PP156 Ink ribbon ERC 05 AX K0557A RS232C cable D sub 25 pin 2m AX KO1786 200 RS232C cable D sub 9 pin 2m Consumables AX PP156 S Special roll paper 10 rolls in a set AX ERC 05 S Ink ribbon 5 ribbons in a set ...

Page 10: ... check the scale with a known weight Calibrate the scale before using it and after moving it to another location Do not place anything on the pan which is heavier than the weighing capacity Do not drop anything onto the pan Do not use a sharp instrument such as a pencil or ball point pen to press the switches Press the switches gently using only your finger We recommend pressing the ZERO or TARE s...

Page 11: ...e unit using four 5mm Allen screws Stpe 3 Secure the Display Unit Step 3a Remove the 2 screws from the rear of the display unit position the display unit onto the column bracket and pull the excess cable back down the centre of the column to the base unit Ensure that the cable exits via the cut out in the display unit column bracket and secure the headwork with the 2 screws Step 3b Carefully make ...

Page 12: ...le spirit level and Levelling feet Step 6 Adjust the Display Unit Press the caps at the pole top from both sides and adjust the angle of the display unit Step 7 Connect the Power Install the batteries see page 11 or connect the AC adaptor or mains cable Check the weighing accuracy If the scale needs calibration refer to 14 Calibration Bubble spirit level Leveling foot OK NG Step 5 Step 6 ...

Page 13: ...ed in step 2 Caution Replace used dry cells with six new ones when BATT is displayed Do not mix used and new batteries It may cause damage to the battery or product Check the polarity when installing the batteries If you do not observe this it may cause battery leakage Also if the polarity of a battery is wrong the scale may only work temporarily The battery life is dependent upon the environmenta...

Page 14: ...6 Names Base unit Display unit Angle adjustment Column Weigh pan CAL switch Calibrating the scale to weigh it correctly Caution It is necessary to use classified mass Battery Case Type L Bubble Spirit Level RS 232C Interface connector Leveling Foot ...

Page 15: ...L When the battery power is low this mark is displayed Replace with six new batteries Ready mark for the full dribble batch function This mark shows ON The weighing value is within the zero band OFF The full dribble batch process is above the zero band Blinking The start or end of the full dribble batch process above the zero band The comparator indicator Using the comparator function and comparin...

Page 16: ...alue to a percentage The unit is Example Display of the function table This function table sets parameters of items switch Selecting an item switch Selecting a parameter of the item ENTER switch Storing new parameters Example Preset tare Entering tare with digital input switch Selecting a figure switch Selecting a number ENTER switch Storing new tare Example Hold display The hold display is set us...

Page 17: ...h function display is a final value Full dribble batch function display is a preliminary value Comparator function display is a lower limit Full dribble batch function display is the zero band Description of the weighing capacity and minimum graduation 6 2 Switches Power switch Note Type V is in standby status when power is connected Zero switch When there is nothing on the pan and the ZERO switch...

Page 18: ...lecting calibration mass it is used to select a figure Mode switch Used to change the current unit While setting modes this switch is used for storing a parameter and proceeding the next step F switch Full dribble batch function it is used to finish the process Refer to f10 Hold switch Refer to f12 Setting a preset tare selects polarity Print switch Used to print or output data Refer to f5 f9 Used...

Page 19: ...brate the scale perform it after allowing the scale to warm up for 30 minutes Step 5 Press the ZERO switch to display zero With nothing on the pan Step 6 Place something gently onto the pan Step 7 You can read the weight after the stability mark is displayed Step 8 Remove the item from the pan Step 9 Turn the scale off using the ON OFF switch Memo With the power cord connected type V consumes only...

Page 20: ...eed to disable the auto power off function See 15 2 page 43 Step 5 Press the ZERO switch to display zero With nothing on the pan Step 6 Gently place something on the pan Step 7 You can read the weight value after the stability mark is displayed Step 8 Remove the item from the pan Step 9 Turn the scale off using the ON OFF switch Caution Replace used dry cells with six new ones when BATT is display...

Page 21: ...p 3 It is now possible to put something into the container and to read its net display Step 4 Remove all items from the pan 7 2 2 Preset Tare Digital Input of Known Tare Step 1 Press and hold the SET switch and press the TARE switch Then the blank or stored tare value is displayed This blank display means that the tare value is zero reset value and blinks Step 2 Set the preset tare value by using ...

Page 22: ...ll Dribble Batch Function f6 9 Accumulation Function f8 1 Comparator Upper limit or HI Comparator Lower limit Final value or HI Preliminary value Zero band OK LO or LO Pound Ounce Percentage Made Metric kg Counting Mode Non metric units Inactive Comparator f6 0 and Inactive Accumulation Function f8 0 Metric unit Active Comparator f6 1 f6 7 Active Simple Batch Function or Active Full Dribble Batch ...

Page 23: ...he greater the accuracy of the count Select from 5 pieces 10 pieces 20 pieces 50 pieces 100 pieces Step 4 Put the container onto the pan Press the TARE switch Step 5 Put in the number of samples selected at step 3 Press the ENTER switch to store the weight after the stability mark is displayed The count is then displayed Caution When the sample is too light and it is not possible to calculate a un...

Page 24: ...lay the unit PCS Step 2 Store the unit mass of the item Refer to 8 1 Storing a Unit Mass Step 3 Put the container only onto the pan Press the TARE switch Step 5 Put articles into the container and read the count Step 6 Remove all items from the pan 8 2 Counting the number of articles ...

Page 25: ... mode that stores a 100 mass Step 3 If necessary with nothing on the pan press the ZERO switch to display zero Step 4 Gently place the 100 mass onto the pan Press the ENTER switch to store the mass after the stability mark is displayed Then the percentage unit is displayed Caution When the sample is too light and it is not possible to calculate a 100 mass the scale displays lo and returns to step ...

Page 26: ...splay the unit Step 2 Store the unit mass of the article Refer to 9 1 Storing a 100 Mass Step 3 If a container is needed put the container only onto the pan and press the TARE switch Step 4 It is now possible to put the item into the container and read the percentage Step 5 Remove all items from the pan ...

Page 27: ... date and data number are printed Date is set at function table f16 Caution The accumulation function can only be used with the first weighing unit accumulated e g you cannot accumulate pcs while displaying kg Parameter List and Word Definition The near zero is within 4 digits from the zero point in the unit of kg The digit a unit of display is equivalent to the minimum graduation The zero point i...

Page 28: ... scale accumulates the data automatically Use Packaging articles like a powder it is used for recording the bag number and total mass 10 1 Preparation Setting Parameters Step 1 Turn off the display Press the ON OFF switch while the ZERO switch is pressed and held The function table is displayed Step 2 Press the ENTER switch to display an item of the accumulation function f8 Step 3 Select a paramet...

Page 29: ... using step 4 Step 6 Press the MODE switch to display the number of articles and total mass with M or displayed Example 2 This example accumulates the articles that were removed from the pan The function parameter is set to f8 4 Step 1 Enter into the kg mode using the MODE switch Put all articles on the pan and press the TARE switch Step 2 Press the MODE switch to display M or Step 3 Press the ZER...

Page 30: ...t display value f6 1 The scale always compares the display value f6 2 Pressing the SET switch the scale always compares the display value if not near zero f6 3 The scale always compares the display value if not near zero f6 4 When the display value becomes stable after pressing the SET switch the scale compares the display value If the SET switch is pressed again the scale stops the comparison f6 ...

Page 31: ...eld The function table is displayed Step 2 Press the ENTER switch to display an item of the accumulation function f6 Step 3 Select a parameter of the comparator function f6 0 f6 7 with the switch Step 4 Press the ENTER switch to store the new parameter Step 5 Press the F switch and the ENTER switch to exit from the function table Then the scale displays the weighing mode ...

Page 32: ...following switches switch Selecting the value of a digit switch Selecting a digit F switch Selecting the polarity Step 9 Press the ENTER switch to store the new parameter and display the blinking LO Step10 Set the lower limit value by using the following switches switch Selecting the value of a digit switch Selecting a digit F switch Selecting the polarity Step 11 Press the ENTER switch to store t...

Page 33: ... is between 6 500kg and 7 000kg OK is displayed When the current value is greater than 7 000kg HI is displayed Example 2 This example is set as follows Function table f6 4 Pressing the SET switch after the stability mark is displayed the scale compares the current display value with the upper limit value and the lower limit value immediately Upper limit value HI 2 000kg Lower limit value LO 1 000k...

Page 34: ...band LO in advance to use this function It is necessary to install option OP 03 or OP 04 if you use the relay output of the full dribble batch function In the example of a filling machine with a scale and hopper the performance and processing of the system are assumed to be as follows Zero Band Preliminary value Final value indicator indicator indicator LO relay output OK relay output HI relay out...

Page 35: ...List and Word Definition The gross is a total weighing value no tare value is subtracted The net is a measurement value with the tare value subtracted from the gross The zero band means the zero detection level The zero point is the fundamental starting point to weighing Comparator Function table Meaning and purpose f6 9 Full Dribble batch function Full Dribble batch sub function Function table Me...

Page 36: ... f6 Step 3 Select a parameter of the full dribble batch function f6 9 with the switch Step 4 Press the ENTER switch to store the new parameter and display an item of the full dribble batch sub function f10 Step 5 Select a parameter of the full dribble batch sub function f10 0 f10 3 with the switch Step 6 Press the ENTER switch to store the new parameter Step 7 Press the F switch and the ENTER swit...

Page 37: ...isplay the blinking OK of preliminary value Step11 Set the preliminary value using the following switches switch Selecting the value of a digit switch Selecting a digit Step12 Press the ENTER switch to store the new parameter and display the blinking LO of zero band Step13 Set a zero band which is greater than the tare value using the following switches switch Selecting the value of a digit switch...

Page 38: ...function It is necessary to install option OP 03 or OP 04 to use the relay output of the comparator It is necessary to install option OP 03 to use the buzzer output of the comparator Comparison Condition Gross Zero band LO is displayed and output Final Preliminary Net OK is displayed and output Final Net OK HI is displayed and output Parameter List and Word Definition The gross is a total measurem...

Page 39: ...me time because these parameters use common memory 13 1 Preparation Setting Parameters Step 1 Turn off the display Press the ON OFF switch while the ZERO switch is pressed and held The function table is displayed Step 2 Press the ENTER switch to display an item of the comparator function f6 Step 3 Select a parameter of the simple batch function f6 8 with the switch Step 4 Press the ENTER switch to...

Page 40: ...witches switch Selecting the value of a digit switch Selecting a digit Step 10 Press the ENTER switch to store the new parameter and display the LO blinking Zero band Step11 Set the zero band using the following switches switch Selecting the value of a digit switch Selecting a digit Step 12 Press the ENTER switch to store the new parameter and display the weighing mode 13 2 Operation and Performan...

Page 41: ...The zero point is the fundamental starting point to weighing and influences the performance of the scale Span Calibration The function that adjusts the span with a calibrated mass so that the scale can accurately weigh anything within the weighing capacity Comment Span means the range of weighing capacity Use a calibration mass at least two thirds of the weighing capacity Comment Caution It is nec...

Page 42: ...lcutta 9 788 m s2 Paris 9 809m s2 Chicago 9 803 m s2 Rio de Janeiro 9 788m s2 Copenhagen 9 815 m s2 Rome 9 803m s2 Cyprus 9 797 m s2 San Francisco 9 800m s2 Djakarta 9 781 m s2 Singapore 9 781m s2 Frankfurt 9 810 m s2 Stockholm 9 818m s2 Glasgow 9 816 m s2 Sydney 9 797m s2 Havana 9 788 m s2 Taiwan 9 788m s2 Helsinki 9 819 m s2 Taipei 9 790m s2 Kuwait 9 793 m s2 Tokyo 9 798m s2 Lisbon 9 801 m s2 Va...

Page 43: ...avity acceleration using the following switches switch Selecting the value of a digit switch Selecting a digit Step4 Press the ENTER switch to store the new value Step5 Press the CAL switch again Then the scale returns to the normal weighing mode 14 2 2 Preparation Step 6 Confirm the environmental conditions as follows Maintain a constant temperature and a stable power supply Install the scale on ...

Page 44: ... If finishing the calibration mode at this stage Zero calibration only press CAL to proceed to step 13 14 2 4 Span Calibration Step11 Set the value of the calibration mass using the following switches The initial value depends upon the particular model switch Selecting the value of a digit switch Selecting a digit Step 12 Place the mass selected at step 11 onto the pan When the stable mark is disp...

Page 45: ...ers for each item using the following switches switch Selecting the parameter of an item Selecting the value of a digit at f16 switch Selecting a digit at f16 F switch Proceeding to the end of the table without storing the parameter ENTER switch Storing a parameter for the current item and proceeding to the next item Returning to normal mode from the end of the table Step 3 Press the ENTER switch ...

Page 46: ...le outputs the data automatically Next Output mode output can be performed after the display becomes near zero or a negative value f5 4 Auto print When the display becomes a stable value outside near zero the scale outputs the data automatically Next output can be performed after the display becomes near zero f5 5 At each finish of full dribble batch function the data is output Mode selection for ...

Page 47: ...dition of the buzzer on option OP 03 by comparator function or full dribble batch function f7 0 No buzzer f7 1 The buzzer sounds at LO f7 2 The buzzer sounds at OK f7 3 The buzzer sounds at LO and OK f7 4 The buzzer sounds at HI f7 5 The buzzer sounds at LO and HI f7 6 The buzzer sounds at OK and HI f7 7 The buzzer sounds at LO OK and HI f7 8 The buzzer sounds at finishing the full dribble batch p...

Page 48: ...mes a stable value outside near zero f9 3 the scale outputs the data automatically Next output can be performed after the display becomes near zero f9 4 At each finish of full dribble batch function the data is output f9 5 When the accumulation function is used the data is output The details of the full dribble batch function B f10 0 Reaching final value and pressing the F switch the current proce...

Page 49: ...erson s weight f13 2 Animal weighing Selects a storable minimum unit mass in the counting mode Precision f14 0 Stores a unit mass using the unit of a digit of f14 1 Stores a unit mass in the unit of one eighth digit unit mass f14 2 Stores a unit mass if the total of sample mass is heavier than 5 digits Refer to 16 1 Data Format Data f15 0 Format 1 A D general format for scales balances Format f15 ...

Page 50: ... the function table in advance There are option cables as follows AX KO557ARS 232C cable D sub 25 pin 2m AX KO1786 200 RS 232C cable D sub 9 pin 2m Transmission system EIA RS 232C Transmission Asynchronous bi directional half duplex Data format Baud rate 2400 4800 9600 bps Data 7 bits Parity 1 bit Even Start bit 1 bit Stop bit 1 bit Code ASCII Terminator CR LF CR 0D H LF 0A H Pin Connections Pin N...

Page 51: ...ta Q T Out of range over O L The weighing data consists of 9 characters including decimal point and polarity The polarity is always output There are three units The unit is 3 characters In case of out of range numbers become all 9 s The terminator is always output as CR LF Data in the unit of kg Counting mode Percentage mode Out of range Definition of symbols CR carriage return C R LF line feed L ...

Page 52: ...and polarity The data consists of 7 characters in the counting mode The polarity is always output There are three units The unit is 2 characters In case of out of range numbers become all 9 s The terminator is always output as CR LF Caution When the data is longer than 7 characters in the counting or percentage mode the overflow is ignored Data in the unit of kg Counting mode Percentage mode Out o...

Page 53: ...weight Approximately 4 times s f13 1 Animal weighing Approximately 4 times s Step 1 Turn off the display Press the ON OFF switch while the ZERO switch is pressed and held The function table is displayed Step 2 Select a parameter for the baud rate f4 using the ENTER and switches Step 3 Select stream mode f5 0 of output using the ENTER and switches Step 4 Select format 1 f15 0 of format using the EN...

Page 54: ...the MODE switch Template U Command Response The scale changes mode and unit Zero The current mass value is set to the zero point This is same as the ZERO switch Template Z Command Response The mass value becomes zero and zero point mark is displayed Tare The current mass value is set to zero after placing a tare container receptacle case etc and the net is displayed This is the same as the TARE sw...

Page 55: ...ower limit value A lower limit value is stored Template LO parameter Command Response The lower limit value is stored Caution The lower limit value must be less than the upper limit value Accumulation data output Accumulated data is output Template A Command Reply Accumulation count output Number of accumulations is output Template N Command Reply Reset of Accumulation data and number Data and num...

Page 56: ...ue is stored Template S0 parameter Command Response The value is stored Preliminary value The preliminary value is stored Template S1 parameter Command Response The value is stored Zero band The zero band is stored Template S2 parameter Command Response The value is stored ...

Page 57: ...is displayed Step 2 Select a parameter of the baud rate f4 using the ENTER and switches Step 3 Select command mode f5 1 of the output using the ENTER and switches Step 4 Select format 1 f15 0 of the format using the ENTER and switches Step 5 Press the ENTER switch to store the new parameters Return to the normal weighing mode using the ENTER switch Step 6 Receiving a command the scale responds ...

Page 58: ...lid state relay Maximum voltage DC50V Maximum current DC100mA Maximum ON resistance 8 Ω Pin No Signal name Direction Description 1 HI Output Relay output of HI 2 RXD Input Receive data 3 TXD Output Transmit data 4 LO Output Relay output of LO 5 SG Signal ground RS 232C 6 OK Output Relay output of OK 7 DSR Output Data set ready 8 COM Relay common terminal Installing OP 03 Step 1 Remove two screws t...

Page 59: ...at Baud rate 2400 4800 9600 bps Data 7 bits Parity 1 bit Even Start bit 1 bit Stop bit 1 bit Code ASCII Terminator CR LF CR 0D H LF 0A H Address 01 99 Address parameter f10 of function table Relay Solid state relay Maximum voltage DC50V Maximum current DC100mA Maximum resistance 8 Ω Mating connector TM BLA9 of accessory pack Pin connections Pin No Signal name Direction Description 1 SDA Output RS ...

Page 60: ... Selection switch for the RS 422 RS 485 interface Selects either of RS 422 or RS 485 interface using a switch on the board Installing OP 04 Step 1 Remove two screws that attach the RS232C board on the rear of the display unit Remove the RS232C board Step 2 Switch the connections Step 3 Insert the option board into the display unit and afix with the screws ...

Page 61: ...s is 23 the repl y is as follows Normal response Response of impossible command Undefined command response Bit format 17 2 2 Command List The following explanation uses format 1 f15 0 and assumes address is 23 Data output The current weighing data is output Template Q Command Reply Selection of mode and unit Selects the mode and unit This is same as the MODE switch Template U Command Reply The sca...

Page 62: ...isplayed Cancel of tare The display value becomes the gross and the net mark is turned off The tare value becomes zero Template CT Command Reply Gross is displayed and the net mark is turned off Preset tare The tare value is set and the net is displayed The net mark is displayed Template PT parameter Command Reply Net is displayed Upper limit value An upper limit value is stored Template HI parame...

Page 63: ...tion data and number Data and number of accumulations become zero Template CA Command Reply Data and number of accumulations become zero Final value The final value is stored Template S0 parameter Command Reply The value is stored Preliminary value The preliminary value is stored Template S1 parameter Command Reply The value is stored Zero band The zero band is stored Template S2 parameter Command...

Page 64: ...racters 16 characters per line Width of roll paper 44 5mm Accessories a special roll paper an ink ribbon Consumables Special roll paper AX PP156 S Including 8 rolls in a set Ink ribbon AX ERC 05 S Including 5 pieces in a set Operation and Print Samples Pressing the F switch while pressing and holding the PRINT switch paper feed is performed Print sample of selecting print mode f9 1 f9 4 Print samp...

Page 65: ... 1 Spare ink ribbon ERC 05 1 Installation Method 1 Disassembly a Disconnect the scale power plug from the AC mains supply socket b Loosen the lock screws and remove the rear cover unit Item 3 c Loosen 4 x screws Item c and remove the upper case unit d Remove 2 screws Item a and remove the Battery Cover 2 Installation a Connect CN2 of the printer board Item 8 to J5 on the main board Item 1 b Instal...

Page 66: ...per case Item 1 3 Performance Check a Press ON OFF key while holding the ZERO key pressed b F1 will be displayed press the MODE key c F 9 0 will be displayed press the RANGE key d F 9 1 will be displayed press the MODE key e F10 will be displayed press the F key f End will be displayed press the MODE key g Prepare the paper roll and open the printer cover h While holding the F key press the PRINT ...

Page 67: ...y g 2 10 20 40 Linearity g 2 10 20 40 Span drift 20ppm C typ 5 C 35 C Power source HW GL AC adaptor Please confirm that the AC adaptor type is correct for your local voltage and receptacle Battery x 6 pieces type D HW GV Please confirm that the Main power type is correct for your local voltage and receptacle type Battery life HW GL Approximately 600 hours with alkaline dry cell battery Ambient tem...

Page 68: ...HW G Instruction Manual Page 66 HW G OZIM v1a Dimensions ...

Page 69: ...HW G Instruction Manual Page 67 HW G OZIM v1a ...

Page 70: ...hese items Is the AC adaptor properly connected Nothing displayed Is the AC adaptor the correct voltage Scale does not turn on Are the batteries dead Is the battery polarity correct The scale does not display Check around weighing pan for foreign bodies zero at first Is there anything on the pan The weighing value is unstable due to drift 888888 is displayed and does vibration or other not proceed...

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