Adam Equipment PGW Precision Balances PGWuserrevE4 User Manual

							
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13.0  SUPERVISOR MENUS 
 
Pressing the [Setup] key while in normal weighing gives access to the 
menus.  
 
• When [Setup] is pressed and the Supervisor Passcode is not 
enabled the display will show the Supervisor menus.  If passcode is 
enabled, the balance will ask for it by displaying “PASSCODE 0”   
 
• If a wrong code is entered an “ERROR CODE” message will flash and \
the balance will return to weighing mode 
 
• If the passcode has been enabled and entered, the balance will allow 
the operator to access the Supervisor’s menus by which the user can 
enable/disable weighing units or modes, set balance parameters for the 
conditions, set time and date, set parameters for the RS-232 interface, 
calibration parameters and security parameters 
 
• The display will show the first menu item “UNITS”. The [Up] and 
[Down] keys will cycle through the main menu items, pressing the 
[Enter] key will enter the sub-menu or options can be set. Press 
[Mode] to come out of a sub-menu or [Esc] to return to normal 
weighing  
  
13.1 ENABLE WEIGHING UNITS 
   
• When “UNITS” is displayed, press [Enter].  The display will show the 
symbol for the first unit, e.g. carats, ct, together with its enable state 
“OFF” or “On”. The user can then enable or disable the carats unit by 
using [Up] or [Down]. Pressing [Enter] will confirm the setting and will 
advance to the next weighing unit.  Repeat for each weighing unit in 
turn.  Gram is always enabled 
 
• Press [Mode] to advance to setting of the next menu or press [Esc] to 
return to normal weighing 
 
13.2 ENABLE WEIGHING MODES 
 
Same steps are followed to enable or disable the weighing modes. 
 
• Press [Enter] when “MODES” is displayed. The display will show the 
first mode i.e., Parts Counting (“PARTS”) together with its enabled state 
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“OFF” or “On”. The user can enable or disable the parts counting mode 
by using [Up] or [Down]. Pressing [Enter] will confirm the setting and 
will advance to the next weighing mode. Repeat for each mode in turn 
 
• Press [Mode] to advance to setting of the next menu or press [Esc] to 
return to normal weighing 
 
 
13.3 ENABLE SERIAL INTERFACE PARAMETERS 
 
The parameters affecting the serial setup are set in a similar manner to the 
other parameters. 
 
Press [Enter] when “SERIAL” is displayed to enter the sub-menu.  
 
The parameters that can be set are:   
 
ENABLE The serial port can be set to On or OFF 
 
BAUD RATE 
 
Set the Baud Rate to 4800, 9600, 19200 or 38400, the 
default rate being 4800 
 
PARITY 
 
Set the Parity to NONE, EVEN or ODD 
 
STABLE To print when stable (On) or regardless of stability (OFF) 
 
CONTINUOUS Set the RS-232 to send data continuously to On or OFF 
 
PERIODIC Set the RS-232 to send data periodically (set in seconds) 
to On or OFF. If On is selected, the value can be changed 
between 1 and 999 seconds, using [Up] and [Down]  
 
FORMAT 
 
To send data as a single line of data, using the standard 
format or using a customer designed format (FORM 1 or 
FORM 2).  
 
 
Format of custom forms #1 and #2 
 
If FORM1 or FORM2 is selected, it can be changed by the user using a 
selection of available data.  By default the 2 forms are the same as the 
standard form unless changed by the user as below. 
 
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When FORM 1 or FORM 2 is selected the user can set the information to be 
printed on each line of the form.  Pressing the [Up] or [Down] keys will cycle 
through the options available. The options are: 
INST ID Instrument ID number 
SER No Serial Number 
TIME Time  
DATE Date 
NET Net Weight (Gross weight – Tare Weight) 
GROSS Gross Weight 
TARE Tare Weight 
UNIT Unit weight in parts counting mode 
COUNT Number of items in parts counting mode 
REF 100% weight in percent weighing mode 
PERCENT Percentage of reference weight in percent weighing 
LO LIMIT Low Limit when check weighing 
HI LIM High Limit when check weighing 
Cr Lf Inserts a blank line 
END Signifies the end of the report 
When END is entered the display returns to the RS-232 Sub-menu
 
Enter the data to be printed on the first line by pressing the [Up] or [Down] 
key to cycle through the options. If the current information is OK then press 
the [Setup]/Enter key to move to the next line.  
 
e.g. “LINE No1”  “DATE” - prints date  
 
Select a code for one of the preset data formats as detailed above. 
 
The next line shows:  “LINE NO 2”   “TIME” - prints time 
Only one item can be entered per line. 
 
Continue until the formatting of the form is complete. There are 15 lines of 
possible data. After the 15th line has been set or “END” has been selected, 
the balance will return to the RS-232 Sub-menu. 
 
Press [Mode] to advance to setting of the next menu or press [Esc] to return 
to normal weighing. 
 
13.4 SETUP PARAMETERS 
 
The user parameters that control the balance are shown under the SETUP.  
When “SETUP” is displayed, press the [Setup]/Enter key. The options for 
each parameter can be scrolled through by using the [Up] or [Down] key.    
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LANGUAGE 
 
English 
French 
German 
Spanish 
 
 TIME Set Time using the numeric entry method 
(see section 7.1)    
 
 DATE    DATE FORM 
               EUROPE (dd/mm/yy)
                       USA (mm/dd/yy)  
Set Date using the numeric entry method 
(see section 7.1) 
 
 INST ID Enter a user number to identify this balance 
 
 BUZZER 
 
On= Enable 
OFF= Disable 
 
 BACKLIGHT 
 
On  
OFF 
AUTO (default) 
 
 POWER DOWN 
 
Set the time after which the unit will go into 
Stand-by power settings, On=Enable, 
OFF=Disable, If set to On-             
the options are 1 to 9 minutes 
 
 FILTER 
 
Set a value for the amount of filtering to be 
done ranging from 1 to 10. A larger number 
means more filtering and a slower 
response.  
 
 STABILITY 
 
Set a value to be used to determine 
balance stability, set   a value of 1, 2, 5 or 
10d.  A larger number corresponds to a 
larger stable zone. Default is 5 
 
AUTO ZERO Can be set to On or OFF to enable the 
auto-zero function. If set to On- select from 
1, 2 or 5d 
 
The sub-menu is entered by pressing [Enter] – 
 
• Use the [Up] and [Down] keys to increase or decrease the value for 
setting. Press [Enter] to accept the setting and advance to the next 
item in the menu 
 
• Press [Mode] to advance to setting of the next parameter or [Esc] to 
return to normal weighing  
 © Adam Equipment Company 2007 
  
						

							
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13.5 CALIBRATION SETUP 
 
This menu allows the user to set the calibration parameters. 
 
• Press [Enter] when “CAL SETUP” is displayed to select the calibration 
parameters 
 
• The options for each parameter can be scrolled through by using the 
[Up] or [Down] key 
 
ENABLE NO =operator calibration is disabled  
YES=operator calibration is enabled 
CAL REPORT On = Enabled. Prints out Calibration 
report after successful calibration 
OFF = Disabled 
TIME CAL On = Enabled. Select time from 1 to 24 
hours. Default setting is 4 hours 
OFF = Disabled 
TEMP CAL On = Enabled. If set to On, set the 
temperature variation from 0.2 to 4°C 
OFF = Disabled 
INT CAL 
(Only on balances with 
internal calibration masses) 
YES = Use Internal calibration mass as 
displayed or adjust for accurate Internal 
Calibration (see section 13.5.1) 
NO = Use external calibration mass 
 
• Press [Mode] to advance to setting of the next menu which is 
“PASSCODES” or [Esc] to return to normal weighing. 
  
13.5.1 INTERNAL CALIBRATION MASS ADJUSTMENT 
 
Balance model Internal Calibration mass (approx.) 
PGW 153i 100g 
PGW 253i 240g 
PGW 453i 240g 
PGW 753i 520g 
PGW 1502i                          1400g 
PGW 2502i                          1400g 
PGW 3502i                          1400g 
PGW 4502i                          1400g 
 
NOTE: The value of the internal mass is not an exact number, such as 100g.  
It must be set by comparing with an external mass.  The exact value can be 
set, provided this feature is enabled at the factory. 
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PROCEDURE 
 
• Make sure the balance is level and has been ON for 4 hours or more at 
a stable temperature. 
 
• Calibrate the balance twice. This helps to reduce any stresses in the 
mechanics. 
 
• To verify the accuracy of this internal calibration, place an external 
mass approximately equal to the same internal calibration mass. 
Record the result.   
 
• When “INT CAL” is displayed select “YES” by pressing the [Enter] key. 
The value of the internal mass set in the factory will be displayed. 
 
• A new internal value can then be reset to display the external mass 
value correctly. If the reading for the external mass is greater than the 
actual value of the mass then reduce the internal mass value by the 
difference.  Enter this reduced value when prompted by the display. 
 
For example, if the internal mass previously set is 520.054g and the 
display reads 500.050g when using an external mass of 500g, then 
reduce the internal mass value by 0.050g. Enter the new revised value 
of 520.004 (in place of 520.054g) when prompted. The adjustment can 
be done for up to ±100mg. 
 
• Repeat the calibration and check the value of the external mass again.   
 
• Repeat this procedure until the value displayed is correct for the mass 
used.  
 
• Press [Esc] to return to normal weighing. 
 
13.6 PASSCODES 
 
To enable the security features in this balance it is necessary to set 
passcodes. There are 2 passcodes called Operator Passcode and Supervisor 
Passcode. The Operator Passcode allows an authorised user to operate the 
basic weighing functions of the balance but will not allow access to the 
Supervisor Menus if the Supervisor Passcode has been set.   
 
To change or disable a Passcode it will be necessary to enter the current 
passcode.    
 
Press [Enter] when “PASSCODES” is displayed to enter this section. 
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OPERATOR Enter the current passcode (OLD) first then enter a new 
passcode if desired.   A passcode set to zero will disable 
the security feature and allow unlimited access.    
SUPERVISOR First enter the current passcode (OLD) and then enter a 
new passcode if desired.   A passcode set to zero will 
disable the security feature and allow unlimited access.   
13.6.1 Forgotten Passcodes 
 
Keep a record of the passcode to ensure you can access this section again.  
If however you have forgotten your passcode you can still gain access by 
entering a universal code. 
 
If you have forgotten the current passcode a code of “15” will always allow 
you to enter the Supervisor area.    
 
Using the Supervisor menus go to PASSCODE section. Reset the operator or 
Supervisor passcode using the “15” code as the old number when asked. 
 
14.0   PERIPHERALS  
 
The peripherals that can be used with the balance are the following: 
14.1 DENSITY DETERMINATION KIT  
(for 0.001g units only) 
 
The Density Determination Kit includes everything needed to carry out 
precise and repeatable measurement. The kit allows a sample to be weighed 
in air and then a liquid to determine the density of the sample. It also allows a 
glass sinker of known volume to be weighed in air or in a liquid, to determine 
the density of the liquid.   
14.2 ANTI-VIBRATION TABLE 
 
The anti-vibration table is a support for laboratory balances that isolate the 
balance from vibration through the floor. The table has a granite surface for 
the balance with a separate table top surrounding the balance.   
14.3 ADAM PRINTERS   
 
The Adam printer is a compact thermal printer which is ideal for use with 
laboratory balances.  There are 3 versions, one to print data as it is received 
from the balance, second one prints data and time along with weighing data if 
enabled by the balance and the other one has the ability to perform statistical 
analysis of the weighing results if enabled by the balance.  
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15.0  SAFETY AND MAINTENANCE 
  
CAUTION 
 
Use the AC adapter designed by the manufacturer for the balance. Other 
adapters may cause damage to the balance. 
 
Avoid overloading or dropping material onto the platform which could damage 
the balance. 
 
Do not spill liquids on the balance as it is not water-resistant. Liquids may 
damage the case and if it gets inside the balance it may cause damage to the 
electronics. 
 
Material that has a static electric charge could influence the weighing. 
Discharge the static electricity of the samples, if possible.  Another solution to 
the problem is to wipe both sides of the pan and the top of the case with an 
anti-static agent. 
 
16.0  TROUBLE-SHOOTING  
Service of a PGW balance will generally be necessary when the balance 
does not perform as expected. The balances are not user-serviceable. For 
Service Information, see section 18.0 and contact Adam equipment or your 
supplier. 
Problems usually fall into one of the following categories: 
 
User Problems:   
The user is asking the balance for something it cannot do or is confused\
 by 
the modes and functions of a balance.  It is also possible the user has set a 
parameter that has affected the balance operation.  Resetting the parameter 
to a normal value will restore operation. 
 
Mechanical Problems 
The balances consist of complicated and fragile mechanical devices.  They 
can be damaged by placing a weight on it which is too high for the balance or 
by dropping the balance or occasionally shipping it without taking care.   The 
most fragile parts are the flexures.   Dust, dirt, spills and other foreign objects 
in the balance can also cause problems. 
 
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Electronic Problems: 
These are the rarest of the problems affecting balances.  If an electronic 
problem is suspected make sure the mechanical problems that can cause 
similar symptoms have been eliminated before attempting electronic repairs.  
With the exception of cables most electronic repairs are solved by board 
replacement.  
The table that follows is a guide of common problems and their solutions.  
Note that many problems may have multiple solutions and there may be 
problems found that are not listed in the table.  For Service Information, 
contact Adam Equipment or your supplier. 
 
BALANCE DOES NOT FUNCTION  
Problems Possible causes Suggestions 
The balance is dead 
when power is applied 
Power supply failure Check adapter is working 
Check adapter is correct for the balance 
Normal adapter is 15VDC, 800mA. 
*Power supply circuit board failure 
*Short circuit on any circuit board 
The display does not 
turn on but the 
calibration motor 
moves when power is 
applied 
Power is getting to 
balance, display is not 
working 
*Display cables may be faulty 
*Display module failure 
The display stays on 
the initial test screen 
when power is applied.  
Calibration weight 
motor is on. 
Unstable balance 
Balance not working 
correct  
Power supply 
*Check if balance is stable by using 
service menu and view A/D values 
Put draught shield over pan 
Check power supplies 
BALANCE WORKS BUT IS NOT STABLE 
Balance is unstable by 
a few divisions 
Noise or vibration 
from environment 
Friction in mechanics 
 
Check the balance is positioned 
correctly to avoid vibration, wind or air 
movement, it is on a solid table, It is not 
near sources of heat or cool air, 
Check balance with weights if problem 
occurs when sample is used.  Static 
electricity on the samples can cause 
drifting and instability. 
Check the area around the weighing 
pan for hair, dust, obstructions under 
the pan,  
*A complete inspection of the 
mechanics to look for sources of friction 
may be needed. 
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Balance is very 
unstable and does not 
weigh correctly 
Mechanical problems 
 
Balance programming 
 
  
Electronic problems 
 
*A complete inspection of the 
mechanics to look for sources of friction.
*Verify the A/D is also unstable.  If the 
A/D is OK then suspect the 
programming of the balance.  Reset 
parameters, check linearity and redo the 
calibration. 
Some electronic problems can also 
cause this.  But all mechanical problems 
must be resolved first. 
 
BALANCE IS NOT ACCURATE 
 
You must have accurate and trusted weights to test a balance.  If you suspect that the 
balance is not accurate then you must know your weights are accurate.  A balance 
calibrated using a bag of flour is not accurate even if it works OK otherwise. 
 
Balance is not accurateRepeatability 
 
Eccentric loading 
 
 
Linearity 
 
Verify the balance shows the same 
value when the same mass is placed on 
the centre of the pan for a few tests. 
Verify the balance shows the same 
reading (within a tolerance depending 
upon the model) when a mass is placed 
at positions around the pan. 
Verify the balance is acceptable 
throughout the weighing range.  The 
balance must give acceptable readings 
from low weights up to the capacity. 
 
Poor Repeatability Usually a mechanical 
problem. 
Inspect the area around the pan for hair, 
dust or other obstructions,   
*Inspection of the mechanics may be 
needed for any possible problems. 
 
Poor Eccentric loading A mechanical problem Inspect the area around the pan for hair, 
dust or other obstructions,   
*Inspection of the mechanics may be 
needed for any possible problems. 
*Readjusting of the Eccentric loading is 
recommended. 
 
 © Adam Equipment Company 2007