background image

QHW digital weighing scales user’s guide

 

- 8 - 

 

BOTH LIMITS SET 

The display will show OK and the beeper will sound when the weight is 
between the limits.     

 
LOW LIMIT SET,   
  HIGH LIMIT is set to zero 

The display will show OK and the beeper will sound when the weight is 
less than the Low Limit.  Above the Low Limit the display will show 
HIGH and the beeper will be off. 

 

HIGH LIMIT SET,   
  LOW LIMIT is set to zero 

The display will show LOW and the beeper will be off    when the weight 
is less than the High Limit.    Above the High Limit the display will show 
OK and the beeper will be on. 

 
BOTH LIMITS SET.      LOW IS SET GREATER THAN HIGH 

The beeper will never sound and the display will show LOW if the 
weight is less that the LOW limit, and HIGH if the weight is greater than 
the Low Limit. 

 
NOTE: The weight must be greater than 20 scale divisions for the check weighing to 
operate.   
 
To disable the Check-Weighing function enter zero into both limits by pressing the

 

FUNC/C

 key when the current limits are shown then pressing the 

ZERO/ENTER

 key 

to store the zero values. 
 

6.7 ACCUMULATED TOTAL 

 
The scale can be set to accumulate automatically when a weight is added to he scale 
or manually by pressing the 

PRINT

 key.    See the PARAMETERS Section for 

details of selecting the method.  The accumulation function is only available when 
weighing. It is disabled during percent weighing or parts counting. 
 

6.8 MANUAL ACCUMULATION 

When the scale is set to manual accumulation the weight displayed will be stored in 
memory when the 

PRINT

 key is pressed and the weight is stable. 

 
The display will show "ACC    1" and then the total in memory for 2 seconds before 
returning to normal.    If the optional RS-232 interface is installed the weight will be 
output to a printer or PC. 
 
Remove the weight, allowing the scale to return to zero and put a second weight on.   
Press 

PRINT

, the display will show "ACC      2" and then show the new total. 

Continue until all weights have been added.       
To view the totals in memory press the 

PRINT

 key when the scale is at zero.    The 

display will show the total number of items "ACC  xx" and the total weight before 
returning to zero.      The totals will also be printed via the RS-232 interface. 
 
To erase the memory press 

PRINT

 to view the totals and then press the 

FUNC/C

 key 

to clear the memory. 

Summary of Contents for QHW 15

Page 1: ...UGQHW E0204 QHW series Digital Weighing Scales User s guide...

Page 2: ......

Page 3: ...5 DISPLAYS 5 SECTION 6 OPERATION 6 6 1 Zeroing the display 6 6 2 Taring 6 6 3 Weighing a sample 6 6 4 Percent weighing 6 6 5 Parts counting 7 6 6 Check weighing 7 6 7 Accumulated total 8 6 8 Manual a...

Page 4: ......

Page 5: ...They all have stainless steel weighing platforms on an ABS base assembly All the keypads are sealed color coded membrane switches and the displays are large easy to read liquid crystal type displays L...

Page 6: ...ns Interface RS 232 Output Optional Stabilisation Time 2 Seconds typical Operating Temperature 0 C 40 C 32 F 104 F Power supply external 115 230 Vac 50 60Hz 10 watts Calibration Automatic External Dis...

Page 7: ...ater Avoid air movement such as from fans or opening doors Do not place near open windows Keep the scales clean Do not stack material on the scales when they are not in use 3 2 INSTALLATION of QHW SER...

Page 8: ...the right when setting values for parameters or other functions Enters the percent weighing function Allows the weight unit weight and count to be seen when parts counting Secondary function is to mo...

Page 9: ...and a unit to the right of the digits In addition there are labels for TARE GROSS weight ZERO and for Low battery 888888 OK HI LO GROSS TARE ZERO g pcs oz tkglb Checkweighing Symbols Stability Symbol...

Page 10: ...time if another type of product was to be added to the first one Again only the weight that is added after taring will be displayed When the container is removed a negative value will be shown If the...

Page 11: ...to display unit weight g pcs Total weight kg or the count pcs Press the FUNC key to return to normal weighing 6 6 CHECK WEIGHING Check weighing is a procedure to cause an alarm to sound when the weigh...

Page 12: ...he zero values 6 7 ACCUMULATED TOTAL The scale can be set to accumulate automatically when a weight is added to he scale or manually by pressing the PRINT key See the PARAMETERS Section for details of...

Page 13: ...s to zero Adding a second weight will repeat the process While the weight is on the scale it is permissible to press the PRINT key to store the value immediately In this case the scale will not store...

Page 14: ...y switch off to protect the battery To charge the battery simply plug into the mains power The scale does not need to be turned on The battery should be charged for 12 hours for full capacity Just und...

Page 15: ...ormal weighing operations parts counting or recalling of totals from memory will all be different Examples follow Normal Output When percent weighing the output is the weight shown in percent only GS...

Page 16: ...g off when the scale is not used The backlight can be set to be EL On EL Au Automatic or EL Off The maximum battery life is achieved with the backlight turned off Press the TARE key to change the valu...

Page 17: ...l calibrate weight completed press ZERO ENTER to complete the calibration The scale will begin counting back to zero after the last weight has been selected Calibration weights QHW SERIES Model QHW 3...

Page 18: ...ON POSSIBLE CAUSES Err 4 Initial Zero is greater than allowed 4 of maximum capacity when power is turned on or when the ZERO ENTER key is pressed Weight on the pan when turning the scale on Excessive...

Reviews: