Adam Equipment PGW Precision Balances PGW2revA User Manual

							 
© Adam Equipment Company 2010                        9 
6.0  DISPLAY 
 
 
The LCD has several areas-   
-  A  large  7  digit  area  to  display  the  weight  with  s ymbols  for 
common weighing units on its right and symbols for  zero, tare 
(Net) and stability on the left.  
-  A  10  digit  area  which  allows  a  large  amount  of  fl exibility  for 
displaying  text  messages  concerning  menus,  operatio n  and 
errors, for example to display the current weighing  mode or to 
guide  the  user  through  processes  such  as  density  
determination   
-  A  percentage  indicator  known  as  capacity  tracker  which  is  a 
0-100% bar graph consisting 10 large segments for i ndicating 
the percentage of the total balance capacity used a nd arrows 
for check weighing. 
     
						

							 
© Adam Equipment Company 2010                        10 
 
SYMBOLS AND TEXT 
 
The LCD has unique symbols to indicate the followin g: 
  0  
  Zero 
 Busy   
 
Stable 
 A bar graph with set point markers   
g,  mg,  kg,  ct,  dwt,  GN,  ozt,  oz,  
lb, dr, tl H, tl T, tl S, MM, T, ti, N, 
Custom, g/cc, Pcs, %, M, and S  Symbols shown for units and modes   
 
INDICATORS  
    “
CAL” 
When calibration is occurring or about to occur 
“ºC”  When  a  temperature  is  shown  or  a  temperature  driven
 
calibration is to occur 
“ti”  For a time driven calibration 
“Net” 
When a net weight is shown 
“PARTS” When the balance is in the Parts counting mode 
“PERCENT” When the balance is in the Percent weighing mode 
“NT”  When the balance is in the Net/ Total mode 
“0%”, “100%” When  the  capacity  tracker  is  showing  percent  of  max
imum 
range used 
 
     
						

							 
© Adam Equipment Company 2010                        11 
 
7.0  KEYPAD 
 
 
 
The keypad has the following keys to operate the ba lance. 
 
Keys Primary function  Secondary function 
 To turn the balance to ON or  
Standby 
- 
[
 0/T ] or  
[Esc]  A combined zero and tare  
function 
To escape from setup 
functions and modes 
[Unit] / 



 or 
[Down]  Selects weighing units by  
cycling through a set of  
enabled units  To decrement or change a  
displayed value or scroll  
through options backwards
 
[Mode] / 
 or  
[Advance]  Enters the Mode Selection  
Menu 
To advance a flashing digit 
by one position to the right. 
 
To go back by one step  
during setup functions 
[Print] / 
 or 
[Back]  Instructs the balance to print  
data 
To advance a flashing digit 
by one position to the left 
[Cal] /    
or 


 
[Up] 
 
Starts the calibration function    To increase or change a 
displayed value or scroll 
through options forward 
[Setup]/              
or
 [Enter]  Enters the Setup parameters  
(Supervisor Menus)  Enters a function or saves 
a value while manually  
manually  entering unit  
weight or check weighing 
limits  
7.1  NUMERIC ENTRY METHOD 
 
To set a value when required, use the keys as given
 below-  
         - [Up] and  [Down]  keys to increase or decrease the flashing digit,  
         -  [Advance]  and [Back]  keys to advance or move back the digit and  
         -  [Enter]  key to accept the value    
						

							 
© Adam Equipment Company 2010                        12 
 
8.0  INPUT/OUTPUT 
 
 
  
The rear panel has connectors for RS-232 serial and  a power 
input socket.   Required  power  input  is a low-voltag e  external 
supply, 12VDC @ 800mA. (PGW 753, 15VDC)     
     
						

							 
© Adam Equipment Company 2010                        13 
 
9.0  OPERATIONS 
9.1  INITIALISATION   
 
When the  balance  is  first  switched on, it  
will display the balance serial number (if 
set),  software  revision,  model  capacity 
and then all segments on the display will 
be  shown.    Overall  the  time  taken  is  
usually 5 -10 seconds.   
If  an  operator  passcode  has  been  set,  the  display  w ill  show  “PASSCODE ”  and 
the main display will show a zero.  In this case yo u must enter the passcode 
to  continue  using  the  numeric  entry  method  (see  sec tion  7.1).  A  different 
passcode  may  be  set  for  a  Supervisor  to  weigh  or  to   have  access  to  the 
selected  User  menus.      If  the  passcode  has  not  been   set  the  balance  will 
continue as below.  
 
  The display will show zero reading along  
with  the  zero  symbol  “

0 ” and  the 
weighing  unit  last  used.    If  automatic  
time  calibration  is  enabled  the  balance  
will  calibrate  15  minutes  after  power  up 
or again after the pre-set time interval. 
 
9.2  PASSCODES 
 
If  a  passcode  has  been  set  to  limit  access  to  the  w eighing  functions  of  the 
balance  the  display  will  show  “PASSCODES”  with  the  main  digit  set  to  zero.  
Use  the  numeric  entry  method  (see  section  7.1)  to  e nter  the  code.  The 
display  will  change  to  show  7  digits  set  to  zero  wi th  the  rightmost  digit 
flashing.  Make  sure  to  enter  the  correct  passcode  t o  continue.    See  the 
Section 13.6 for details.      
						

							 
© Adam Equipment Company 2010                        14 
 
9.3  WEIGHING 
 
  Press  [ 0/T ] to  zero  the  balance,  if  required,    “ 0   “  will  be 
displayed  
 
   Place a mass on the pan and the weight will be dis played  
  If a container is used press  [ 0/T ] to tare the balance when the 
balance symbol “~” is on. “Net” will be displayed t o indicate that the 
balance is tared 
 
   When  the  display  shows  zero,  place  the  item  to  be  weighed.  Only  the 
net  weight  will  be  displayed.  The  capacity  tracker  at  the  bottom  of  the 
LCD  will  indicate  the  weight  graphically  with  respe ct  to  the  maximum 
weighing capacity 
 
   At  any  time  the  [Unit] key  may  be  pressed  to  select  another  unit.  Use 
the  [Up]  or [Down]  key to scroll through the units and select the des ired 
unit  by  pressing  [Enter],  the  display  will  change  to  show  the  weight  in 
the selected weighing unit. The available weighing  units can be enabled 
or  disabled  by  the  user  (see  section  13.1).  Only  we ighing  units  that 
have been enabled will be cycled through when  [Unit] is pressed 
9.3.1  Weighing Units 
 
You  can  select  alternative  weighing  units  to  displa y  the  weight  by  pressing 
the  [Unit]  key.  The available weighing units are: 
  Unit  Symbol  Models  Conversion Factor 
1g = Conversion Factor 
1 unit = grams 
1  GRAMS  g  All  1  1.0 
2  MILLIGRAMS  mg  not 0.01g units  1000  0.001 
3  KILOGRAMS  kg  All  0.001  1000 
4  CARATS  ct  All  5  0.2000 
5  PENNYWEIGHTS  dwt  All  0.643014865  1.555174 
6  GRAINS  GN  All  15.43236  0.0647989 
7  TROY OUNCES  ozt  All  0.032150747  31.103476 
8  OUNCES  oz  All  0.035273962  28.349523 
9  POUNDS  lb  All  0.0022046  453.5924 
10  DRAMS  dr  All  0.564383422  1.7718451 
11  HK TAELS  tl H  All  0.026717251  37.42900 
12  TAIWAN TAELS  tl T  All  0.026666702  37.49995 
13  SING TAELS  tl S  All  0.026455464  37.799375 
14  MOMMES  mm  All  0.266666951  3.749996 
15  TOLAS  T  All  0.085735323  11.663804 
16  TICAL  ti  All  0.0612395  16.32933 
17  NEWTONS  N  All  0.00980665  101.971623 
18  CUSTOM  Custom  All  As specified  As specified 
  
						

							 
© Adam Equipment Company 2010                        15 
It  is  possible  to set  the  balance  to  display only g rams.  Grams  will  always  be 
one of the units enabled, by default.   
 
If “CUSTOM” unit is selected, the balance will prom pt for entering a multiplier 
by  displaying  “MULTIPLIER  XX,XXX”,  where  “XX,XXX”  i s  the  last  stored 
value. Any value ranging from 0.100 to 10.000 may b e entered, by which the 
weight  in  grams  will  be  multiplied  before  being  dis played.  If  a  multiplier  of 
greater than 1.000 is entered, the number of decima l places displayed will be 
reduced  by  one.  This  multiplier  value  will  be  saved   for  the  next  use  till  it  is 
changed by the user. 
 
The  balance  displays  the  alternate  weighing  units  w ith  as  much  precision  as 
possible.  For example, the 450g x 0.001g balance c ould weigh up to: 
 
Unit  Maximum  d =  
g.  450g  0.001g 
mg  450000  1 
kg  0.450000  0.000001 
ct.  2250  0.005 
dwt  289.356  0.001 
GN  6944.52  0.02 
ozt  14.86780  0.00005 
oz  15.87325  0.00005 
lb  0.99207  0.00001 
dr  253.972  0.001 
tl.T  12.00000  0.00005 
tl.H  12.02275  0.00005 
tl.S  11.90415  0.00005 
MM  119.9995  0.0005 
T  38.5808  0.0001 
ti  27.5577  0.0001 
N  4.4130  0.0001  
9.4  FUNCTIONS 
 
When weighing, the user can access the applications  that have been enabled 
(see section 13.2). 
 
The following applications are available in this ve rsion (2.41): 
  Weighing 
  Parts counting  
  Percent weighing 
  Check weighing 
  Animal / dynamic weighing 
  Net/Total 
  Density determination 
 
The selectable functions can be enabled using a sim ilar method to the Units 
above by turning the functions on or off.  
						

							 
© Adam Equipment Company 2010                        16 
   
9.4.1  Parts Counting 
 
This  allows  the  user  to  weigh  a  sample  of  parts  to  compute  an  average  unit 
weight and then determine the number of items being  weighed by dividing the 
net  weight  by  the  unit  weight  value.    The  result  is   always  a  whole  number  of 
parts. 
 
The  balance  will  have  a  preset  number  of  parts  to  b e  used  as  a  sample. 
These values are 10, 25, 50 or 100 items. 
 
Steps:  
   Press  [Mode] to show parts counting, “PARTS” will be displayed  
  Enter parts counting by pressing  [Enter]  
  Press  the  [Up] or [Down]   key  to  select  the  sample  size,  “REF  QTY”,  
10, 25, 50, 100, etc., then press  [Enter] to confirm 
 
  When  “LOAD  XX  Pcs”  is shown  place  XX  number  of  items on  the  pan 
and  press  [Enter] to  compute  the  average  piece  weight.  Display  will 
indicate  the  total  weight  in  the  last  selected  unit   and  then  show  “XX 
Pcs” sounding a beep. A message “PARTS” will be pro mpted on the top 
of the display to indicate that the balance is in t he parts counting mode 
 
  Remove the sample and display will show “0 Pcs”.   
  Place  an  unknown  quantity  on  the  pan.  The  balance  will  then  compute 
the number of parts based on the average piece weig ht. The display will 
show the result in Pcs 
 
   To count another item press  [Mode] and continue as before  
  Checks will be made to determine that the weight o f the reference parts 
is large enough for reasonably accurate counting (w eight of each piece 
must be > 1d) 
 
   To return to normal weighing, press  [Esc]  
						

							 
© Adam Equipment Company 2010                        17 
9.4.2  Percent Weighing 
 
Percent  weighing  will  be  done  by  defining  a  certain   weight  to  be  100%.   The 
weight to be used can either be entered by the user  or taken from a sample 
 
  Press  [Mode] and then the  [Up] or [Down]  key to select Percent 
weighing, “PERCENT” will be displayed 
 
   Press  [Enter] to enter the function  
  Display will show, “PERCENT SAMPLE”  
  Press  [Enter] to  select  the  sample  method  or  scroll  to  manually  e nter 
the sample weight as given below 
 
   When “LOAD 100 %“ is shown, add the sample  
  Press  [Enter] to set this weight to be 100%. The display will sho w “REF 
WT”  and  the  sample  weight  in  the  last  selected  unit .  After  a  while 
“100%”  will  be  displayed.  A  message  “PERCENT”  will  be  prompted  on 
the  top  of  the  display  to  indicate  that  the  balance   is  in  the  percent 
weighing mode 
 
   Remove the sample and “PERCENT 0.00%” will be disp layed  
  Place an unknown sample to display the percentage  weight   
  To set another weight as 100%, press  [Mode] and continue as before  
  To manually enter a value to be set as 100%, press  [Up]  or [Down]  key 
when “PERCENT SAMPLE” is shown to select “PERCENT E nt Wt” 
 
  Press  [Enter].  Display  will  show  the  value  in  the  unit  last  used   in  the 
weighing mode 
 
   Enter the weight using the numeric entry method (s ee section 7.1).  
 
   Place unknown sample to display the percentage wei ght   
  To  perform  percent  weighing  with  another  sample  pr ess [Mode]   and 
continue as before 
 
   To return to normal weighing, press  [Esc]  
  
NOTE:
 Percentage  will  be  initially  displayed  to  the  maxim um  number  of 
decimal  places  based  on  the  resolution  of  the  balan ce.  To  increase  or 
decrease by one decimal place, press the  [Up] or [Down]  key respectively. 
  
						

							 
© Adam Equipment Company 2010                        18 
9.4.3  Check Weighing 
 
During  weighing  of  a  sample  the  balance  can  be  set  to  show  if  the  weight  is 
above  or  below  an  upper  and  a  lower  limit.    The  dis play  will  use  the  arrows 
under  the  bar  graph  to  show  that  check  weighing  is  operating.      The  bars 
between  the  arrows  will  indicate  when  the  weight  is   below  the  lower  limit, 
between the limits or above the upper limit. 
 
  
The  buzzer  can  be  set  to  be  active  when  the  weight  is  outside  the  limits 
(below the lower or above the upper) or within the  limits (above the lower and 
below the upper limit), or turned off.  If desired,  only one limit needs to be set. 
If  only  one  limit  is  set  the  other  limit  is  conside red  to  be  zero  (lower)  or  the 
maximum (upper). 
 
The  Check  weighing  is  not  active  when  the  weight  is   less  than  20d.  This  is 
the minimum weight at which the indicator bars are  displayed and the buzzer 
sounds, if it is not set to OFF (see the next page) . 
 
Steps:    
  Press  [Mode]  and  then  the  [Up]  or  [Down]   key  to  select  Check 
Weighing.    When  “CHECK”  is  displayed  press  the  [Enter] key  to  enter 
Check Weighing mode 
 
   Press  [Up] or [Down]  to set the “LOW LIMIT” to “On” or “OFF” 
 
 
Press  [Enter]   to  proceed.    If  the  “LOW  LIMIT”  was  set  to  “On”  th e 
display  will  show  the  current  low  limit  in  the  unit   last  used  in  the 
weighing  mode.  You  may  change  the  limit  using  the  n umeric  entry 
method (see section 7.1). 
 
 
   Press  [Enter] to proceed 
 
  If  the  “LOW  LIMIT”  was  set  to  “OFF”  or  the  setting   of  the  low  limit  is 
complete,  then  the  display  will  change  to  “HIGH  LIM IT”.  Use [Up]  and 
[Down]  to set the “HIGH LIMIT” to “On” or “OFF”  
 
  Press  [Enter]  to proceed 
 
  If  the  “HIGH  LIMIT”  was  set  to  “On”,  the  display  w ill  show  the  current 
high  limit  in  the  last  selected  unit  which  can  be  c hanged  in  the  same 
way as in case of “LOW LIMIT” 
 
  Press  [Enter] to proceed