Adam Equipment PGW Precision Balances PGWuserrevE4 User Manual

							
Page 21 of 48 
• Press the [Up] or [Down] key to select “SEtUP”  
 
• Press [Enter] to select “SEtUP” to set up the balance for animal 
weighing 
 
• Use the [Up] or [Down] key to scroll through the options for setting up 
the mode. The display will show “MODE AUTO” or “MODE MANUAL”. 
 
• Select “MANUAL” or “AUTO” 
  
If “AUTO” is selected- 
 
Threshold (For AUTO mode only) 
 
• The display will next show “THRESHOLD XX” where XX is the 
minimum weight of the item required by the balance to start the process 
for animal weighing. The value will be shown in the last selected unit.  
 
• The XX can be changed from 1 to 99 grams using the numeric entry 
method (see section 7.1) 
 
• To confirm the desired value, press [Enter]  
 
Test time 
 
• After [Enter] is pressed to select “MODE MANUAL” or “MODE AUTO”, 
it will display “TEST TIME XX”, where XX is the number of seconds \
over which the balance will average to compute the final weight as set 
during last operation 
 
• The XX can be changed to between 10-99 seconds using the numeric 
entry method (see section 7.1) 
 
• To confirm the desired value, press [Enter] 
 
Delay 
 
• Next, the display will show “DELAY XX” where XX is the time in 
seconds taken by the balance before the sampling starts  
 
• The XX can be changed to between 0-99 seconds using the numeric 
entry method (see section 7.1) 
 
• To confirm the desired value, press [Enter] 
© Adam Equipment Company 2007  
						

							
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9.4.5 Net/Total  
 
This function allows the user to see the total of all the net weights, the value 
of which is displayed on smaller digits above the main display. The current 
net weight is shown on the main display. The [Tare] key functions the same 
way as in the normal weighing.  
 
Steps: 
 
• Press [Mode] and then [Up] or [Down] to select Net/Total.  When 
“NET/TOT” is displayed press [Enter] to enter the function. The display 
will show zeros in both the display areas accompanied by the symbol 
“NT” indicating that the balance is in the Net/Total mode 
 
• Place the first item. The net weight will be displayed in the main display 
and the smaller digits will still display zeros 
 
• Press [Enter]. The main display will show zeros and the smaller digits 
will show the first net weight as total net weight 
 
• Place a second item on the pan without removing the first one. The 
main display will show the weight of the second item and pressing 
[Enter] will make it show zeros and the smaller digits to show the total 
of both the items 
 
• Continue until all the items are added to the pan 
 
• When finished press [Mode] to transfer the total of the net weights to 
the main display 
 
• Pressing [Print] will print a report containing individual net weights 
followed by the final net weight total. 
9.4.6 Density Determination 
 
It is possible to determine the density of solids or liquids using this mode. The 
user selects the type of density to be determined and then enters values to be 
used by the balance.   
 
The density mode allows the user to use a special Density Kit or use the 
below pan weighing facility to perform the necessary weighing. 
 
 © Adam Equipment Company 2007 
  
						

							
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DENSITY OF SOLIDS    
 
To perform the density of solids test, the user must have a method to 
immerse the sample in the chosen liquid. The density of the liquid must be 
known or determined from a look-up table. 
 
For water and ethanol the density will be calculated based on the 
temperatures entered using the numeric entry method (see section 7.1) 
 
Steps: 
 
• Press [Mode] and then [Up] and [Down] keys to select density 
 
• Press [Enter] to enter Density mode. 
 
• Press the [Up] and [Down] keys to select the solids or Liquid method 
when “DENSITY SOLId”” or “DENSITY LIqUId” is displayed 
 
• Press [Enter] to select the solids method 
 
• Press [Up] or [Down] to select the liquid - Water, Ethanol or Other 
 
• Press [Enter] to select the choice. For water and Ethanol the 
temperature will be asked for. Enter the temperature using the numeric 
entry method (see section 7.1) 
 
• For the “Other” choice the density will be asked for. Enter the density 
(g/cc) using the numeric entry method (see section 7.1) 
 
• Press [Enter] to continue 
 
• The balance will request the weight of the sample in air by displaying 
“AIR WEIGHT”. Place the item on the pan or receptacle, if the density 
kit is used and press [Enter]. The weight will be shown in the last 
selected unit 
 
• After completion of the air weighing, the balance will request the weight 
in liquid by displaying “LIQUID WT”. Submerge the item in the liquid and 
press [Enter] to start the liquid weighing. The weight will be shown in 
the last selected unit. After completion of the liquid weighing, the 
balance will compute the density of the sample and display it as 
“DENSITY XXXX g/cc” 
 
• Remove the item from the pan 
 
• Press [Mode] to continue with a new sample  or press  [Esc] to return 
to normal weighing 
© Adam Equipment Company 2007  
						

							
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DENSITY OF LIQUID     
 
When finding the density of a liquid, it is necessary to weigh a sample of 
known volume in air and then in the liquid. The volume of the sample must be 
entered by the user. The last known volume is stored for use at any time. 
 
If using the density determination kit, the volume of the plumb is marked on 
its support, i.e. 10.123 
 
Steps: 
 
• Press [Mode] and then [Up] and [Down] to select Density 
 
• Press [Enter] to select the Density mode 
 
• Use [Up] and [Down] to scroll through the solid or liquid method 
 
• When “DENSITY LIqUId” is shown, press [Enter] for the liquid method 
 
• The volume will be asked for. Enter the volume using the numeric entry 
method (see section 7.1) or continue using the last volume entered 
 
• Press [Enter] to continue 
 
• The balance will request the weight in air by displaying “AIR WEIGHT”. 
Place the glass plumb supplied with the density determination kit in air 
on the weighing pan and press [Enter] to start the air weighing. The 
value will be shown in the last selected unit.  
 
• After completion of the air weighing, the balance will request the weight 
in liquid by displaying “LIQUID WT”. Submerge the item in the liquid and 
press [Enter] to start the liquid weighing. The weight will be shown in 
the last selected unit. After completion of the liquid weighing, the 
balance will compute the density of the sample and display it as 
“DENSITY XXXX g/cc” 
 
• Remove the item from the pan 
 
• Press [Mode] to continue with a new sample  or press  [Esc] to return 
to normal weighing 
 
• Pressing [Print] will print the density value in g/cc.  
 
 © Adam Equipment Company 2007 
  
						

							
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10.0  CALIBRATION 
 
The PGW XXXe series can only be calibrated with an external mass.  The 
PGW XXXi series can be calibrated with either an internal mass (default 
method) or an external mass (if setup by the user to do this).   See the User 
Parameters section. 
 
10.1 MANUAL CALIBRATION 
 
Pressing the [Cal] key will start calibration. Calibration can also be initiated by 
a change in internal temperature or a set time period as determined by the 
user (see section 13.5). 
 
10.1.1 Calibration using Internal Calibration mass 
 
Calibration will begin automatically.  When calibration is complete the balance 
will return to weighing.  
 
10.1.2 Calibration using External Calibration mass 
 
• Pressing [Esc] will abort the calibration at any time 
 
• Press the [Cal] key 
 
• The display will show the balance setting a new Zero condition by 
showing “LOAD 0”. Make sure the pan is empty then press the [Enter] 
key to continue 
 
• The display will show the busy symbol and then will ask for the value of 
the calibration mass to be entered sounding a beep and displaying the 
default calibration mass. For example, for PGW753e model the display 
will be “CAL MASS 500,000 g” where 500g is the default calibration\
 
mass. Using the numeric entry method, the user may alter the displayed 
value to any value ranging from one-third to full capacity of the balance. 
For example, “CAL MASS 300,000 g”. Press [Enter] to continue 
 
• The balance will then show the value of the calibration mass selected 
sounding a beep, i.e., “LOAD 300,000 g”  
 
• Place the selected mass on the balance. Press [Enter] to continue 
 
• The display will show the busy symbol and after calibration is complete 
it will display “UNLOAD” sounding a beep. Remove the weight. Another 
beep will be heard confirming the unloading action. The balance will 
then return to normal weighing.  
© Adam Equipment Company 2007  
						

							
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10.2 AUTOMATIC CALIBRATION 
 
The balance will have the ability to calibrate (or ask for calibration)\
 when the 
balance has automatic calibration enabled and the conditions of the 
automatic calibration have been meet.  
 
Conditions that will cause an automatic calibration are: 
 
1. Internal temperature change greater than a preset amount, typically 2ºC 
for Precision balances.  
2. Time since last calibration exceeds a preset time, typically 4 hours or 15 
minutes after power is applied. 
 
On the balances with internal calibration the calibration will be done 
automatically when the balance is at a stable zero. The user knows a 
calibration is asked for by the flashing of the “CAL” symbol on the display.  
The display will show a 5 second countdown when calibration will start.  If the 
user presses the [Esc] key the calibration will be delayed one minute to allow 
time for a process to be finished.   
 
On balances with external calibration the balance will call for calibration to be 
carried out by flashing the “CAL” symbol on the display. As soon as the 
balance is calibrated the symbol will be turned off.   
 
The Auto calibration feature can be enabled, disabled or changed within \
the 
user options to meet the requirements of the users. 
 
 
10.3 CALIBRATION ERRORS 
 
Occasionally during calibration an error will be detected. These errors can be 
caused by:   
 
Unstable readings 
Improper calibration weights being used 
Large shifts of zero from the factory settings 
 
When an error is found a displayed message will be shown and the 
calibration must be done again.  If the balance has error messages more than 
once it is possible the mechanics have been damaged.  
 © Adam Equipment Company 2007 
  
						

							
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11.0  RS-232 INTERFACE 
 
The balances have the ability to send or receive data over the serial interface. 
 
The weighing data can be sent over the interface either automatically or when 
the user presses the [Print] key. 
 
The user has control over what data is to be printed.  
  
The following gives a description of the RS-232 interface. 
 
HARDWARE 
 
The RS-232 interface is a simple 3 wire connection. The input and output 
connections are: 
 
Connector:   9 pin D-sub miniature socket 
   Pin 2 input to balance RXD 
   Pin 3 output from balance TXD 
   Pin 5  Signal ground GND 
 
Handshaking is not applied. 
 
Baud rate:  4800, 9600, 19200, 38400 
 
Parity:   NONE (=8N1), EVEN (=7E1) or ODD (=7 O 1) 
 
All lines are terminated with carriage return and line feed (). 
 
In continuous output mode, or if single-line output on demand is selected, the 
serial output format will be a single line in the form “1234.567 g”. 
 
The format of the single-line output will change depending on the mode in 
which the balance is operating, as described below. 
 
If output on demand is selected, the user may optionally configure the serial 
output as a choice of 3 styles of form, either in a default format or in one of 
two custom formats. Each of the custom formats can be configured to output 
up to 15 lines of data. The data types that can be printed are: 
 
NAME TEXT PRINTED 
ID number ID no.:  xxxxxxxxxxxx 
Serial number Serial no. xxxxxxxxxxxx 
Date DATE  dd/mm/yyyy 
Time TIME   hh:mm:ss 
Net weight  Net: xxx.xxx g 
Gross weight Gross: xxx.xxx g 
© Adam Equipment Company 2007  
						

							
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Tare weight Tare: xxx.xxx g 
Unit weight Unit wt: xxx.xxx g 
Count Count: xxxx pcs 
Reference weight Ref. wt: xxx.xxx g 
Percent Percent: xx.xxx % 
Checkweigh lower limit Low: xxx.xxx g 
Checkweigh upper limit High: xxx.xxx g 
A blank line printed  only. 
 
Any of these can be printed on any of the 15 lines available.  Not all items 
need to be used and any one can be used more than once (see section 13.3). 
 
The data for each form will be preceded by a start-of-header  
character (01) and terminated with an end-of-transmission  character 
(04). These characters will be ignored by a serial printer but will allow a 
computer program which reads the data to distinguish between this block 
report format and the single-line output format described above. 
 
STANDARD FORMAT 
 
The balance will print the following data as the standard form. The standard 
form cannot be changed. The format of the custom forms #1 and #2 will be 
the same as the standard form until modified by the user. 
 
Line 1 Date 
Line 2 Time 
Line 3 Blank line 
Line 4 ID number 
Line 5 Blank line 
Line 6 Result 
Line 7 Blank line 
Line 8 Blank line 
  
This will result in a printout that looks like: 
 
 
 Date:  23/09/04 
Time:  15:45:27 
 
ID No: 123456 
 
Net: 123.456 g 
 
 
 
 
 
 
*NOTE: The format of the results line will change depending on the mode in 
which the balance is operating, e.g. 
        Normal weighing, Check weighing, Animal weighing: “123.456 g” 
               Parts counting: “1234 pcs” 
               Percent weighing: “12.345 %” 
 
 © Adam Equipment Company 2007 
  
						

							
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INPUT COMMANDS USING REMOTE KEYS 
 
The balance can be controlled with the following commands sent using 
remote keys such as from a PC. The commands must be sent in upper case 
letters, i.e. “KT” not “kt”. Press the Enter key of the PC after each command 
(the action of Carriage Return is denoted as  as shown below). 
 
Basic Input Commands: 
 
!KT
  
Tares the balance to display the net weight. This is the same as pressing 
the [Zero / Tare] key when the balance is in the normal weighing mode. 
 
!KS Enters the Setup section. This is the same as pressing the [Setup] key 
when the balance is in the normal weighing mode. 
 
Once entered the Setup section, the balance can be controlled remotely 
using the Input Commands (as mentioned in this table) which will perform 
the same key functions as described in section 13.0. 
 
!KP
  
Transmits data over RS-232 interface. This is the same as pressing the 
[Print] key when the balance is in the normal weighing mode. 
 
!KM Enters the Modes section. This is the same as pressing the [Mode] key 
when the balance is in the normal weighing mode. 
 
!KC Enters the Calibration section. This is the same as pressing the [Cal] key 
when the balance is in the normal weighing mode. 
 
!KU Enters the Unit selection section. This is the same as pressing the [Unit] 
key when the balance is in the normal weighing mode. 
 
  
Invalid Input Command: 
 
If an invalid command is received, then the command is returned as follows- 
 
Invalid Command Message returned Remarks 
!NT !EU Command character is not ‘K’  
!KK !EK Key character is not ‘T’, ‘S’, ‘P’, ‘M’, ‘C’ 
or ‘U’ 
!KT- !EF Command format error,  is not 
the fourth character 
 KT  or 
!KT -  
No reply Either ‘!’ or  is missing in the 
command string 
 
© Adam Equipment Company 2007  
						

							
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12.0  ERROR CHECKING 
 
During weighing the balance is constantly checking to see if it is operating 
within the limited parameters.  The errors likely to occur are: 
 
 A/D counts below lowest allowed value 
 A/D counts above highest allowed value 
 A/D not operating 
 Maximum capacity exceeded 
 
Other errors may be detected during special functions or operations.  These 
will be described in the section that applies. 
 
Error messages and the reasons are: 
Concerning A/D counts 
ERROR ADc UL A/D counts below a limit 
ERROR ADc OL A/D counts above a preset limit 
Concerning calibration 
ERROR StAb 
Calibration could not be completed  
because the results were not stable  
 
ERROR LO or  ERROR HI Calibration constant not within 20% of old 
calibration constant 
Concerning weighing 
ERROR LO Weight display is below zero by >4%max 
ERROR LOAd Weight is above maximum plus 90d 
 © Adam Equipment Company 2007