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SECTION 3 INSTALLATION                                     

 

3.1 GENERAL INSTALLATION 

The scales should be sited in a location that will not degrade the accuracy.   
 
Avoid extremes of temperature. Do not place in direct sunlight or near air conditioning 
vents. 
 
Avoid unsuitable tables. The tables or floor must be rigid and not vibrate. Do not 
place near vibrating machinery. 
 
Avoid unstable power sources. Do not use near large users of electricity such as 
welding equipment or large motors. 
 
Avoid high humidity that might cause condensation. Avoid direct contact with water. 
Do not spray or immerse the scales in water. 
 
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 SERIES 

 

The QHW Series comes with a stainless steel platform packed separately. Place the 
platform in the locating holes on the top cover. Do not press with excessive force as 
this could damage the load cell inside. 
 
Level the scale by adjusting the four feet. The scale should be adjusted such that the 
bubble in the spirit level is in the centre of the level and the scale is supported by all 
four feet, If the scale rocks readjust the feet. 
 
Attach the mains cable to the connector on the bottom of the scale. The power switch 
is located on the base near the front of the scale. 

 

 
 
 
 
 
 
 
 
 
 
 
 
 

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...

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