Nova-Tech PGW User Manual

Adam Equipment

PGW SERIES

(P.N. 8080, Revision D3, January 2007)

Software rev.: 2.39

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TABLE OF CONTENTS

1.0 KNOW YOUR BALANCE ..........................................................................................5

2.0 SPECIFICATIONS .....................................................................................................6

3.0 UNPACKING THE BALANCE ....................................................................................7

4.0 LOCATING THE BALANCE .......................................................................................7

5.0 SETTING UP THE BALANCE ...................................................................................8

5.1 ASSEMBLING THE BALANCE .............................................................................8

5.2 LEVELLING THE BALANCE.................................................................................8

5.3 WARM-UP TIME ...................................................................................................8

6.0 DISPLAY ...................................................................................................................9

7.0 KEYPAD ..................................................................................................................11

7.1 NUMERIC ENTRY METHOD..............................................................................11

8.0 INPUT/OUTPUT ......................................................................................................12

9.0 OPERATIONS .........................................................................................................13

9.1 INITIALISATION..................................................................................................13

9.2 PASSCODES......................................................................................................13

9.3 WEIGHING..........................................................................................................14

9.3.1 Weighing Units.............................................................................................14

9.4 FUNCTIONS........................................................................................................ 15

9.4.1 Parts Counting..............................................................................................16

9.4.2 Percent Weighing.........................................................................................17

9.4.3 Check Weighing...........................................................................................18

9.4.4 Animal / Dynamic Weighing..........................................................................19

9.4.5 Density Determination.................................................................................. 22

10.0 CALIBRATION .......................................................................................................24

10.1 MANUAL CALIBRATION.....................................................................................24

10.1.1 Calibration using Internal Calibration mass..................................................24

10.1.2 Calibration using External Calibration mass.................................................24

10.2 AUTOMATIC CALIBRATION...............................................................................25

10.3 CALIBRATION ERRORS ....................................................................................25

11.0 RS-232 INTERFACE .............................................................................................26

12.0 ERROR CHECKING ..............................................................................................29

13.0 SUPERVISOR MENUS .........................................................................................30

13.1 ENABLE WEIGHING UNITS...............................................................................30

13.2 ENABLE WEIGHING MODES.............................................................................31

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13.3 ENABLE SERIAL INTERFACE PARAMETERS..................................................31

13.4 SETUP PARAMETERS.......................................................................................33

13.5 CALIBRATION SETUP........................................................................................34

13.6 PASSCODES......................................................................................................35

13.6.1 Forgotten Passcodes ...................................................................................35

14.0 PERIPHERALS .....................................................................................................36

14.1 DENSITY DETERMINATION KIT........................................................................36

14.2 ANTI-VIBRATION TABLE ...................................................................................36

14.3 ADAM PRINTERS...............................................................................................36

15.0 SAFETY AND MAINTENANCE .............................................................................37

16.0 TROUBLE-SHOOTING .........................................................................................37

17.0 REPLACEMENT PARTS AND ACCESSORIES ....................................................41

18.0 SERVICE INFORMATION .....................................................................................41

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1.0 KNOW YOUR BALANCE

Thank you for selecting the PGW Balance. This Instruction Manual will familiarise you with the installation, accessories,

trouble-shooting, after sales service information, general maintenance of the balance, etc. and will guide you through the various applications.

Please read this Manual thoroughly before starting the operation. If you need any clarifications, feel free to contact your supplier or Adam Equipment.

PRODUCT OVERVIEW

The PGW balances are ideal for laboratory and general purpose weighing. The balances can also be used for some advanced weighing functions.

FEATURES:

• Large easy to read LCD display with backlight

• Standard applications include weighing, check weighing, percentage weighing, parts counting, animal / dynamic weighing and density determination

• Internal Calibration using motorised internal calibration weight

• External calibration models available

PGW series

• Bi-directional RS-232 interface

• Can be configured to print a GLP

Compliant report after each calibration to include the time, date, balance number and a verification of the calibration

• Automatic temperature compensation

• Display in 4 languages- English, French, German and Spanish

• Multiple weighing units

• Capacity tracker

• Date and time

• Easy to use, sealed keypad

• Below balance weighing facility

• Password protection

• Security locking point

• Robust metal casing

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2.0 SPECIFICATIONS

Model* PGW

153e

Maximum

150g 250g 450g 750g 1500g 2500g 3500g 4500g capacity Readability 0.001g 0.01g Tare range Full Repeatability 0.001g 0.01g Linearity (±) 0.002g 0.02g Units of measure

grams, milligrams (for 0.001g units only), kilograms, carats, ounces,

pounds, troy ounce, grains, pennyweights, drams, taels (Hong Kong,

Interface RS-232 bi-directional Operating temperature Power supply 15 VDC, 50/60 Hz, 800 mA Calibration Internal or External, Selectable automatic calibration due to change in time

External

100 g 200 g 500 g 1000 g 2000 g calibration mass Display Backlit LCD with dual digits (24 mm high) and capacity tracker Draught shield Supplied as standard Not applicable Housing Die cast aluminium housing

Pan size 140×140mm 192×192mm Overall dimensions (w x d x h) Net weight 5.5 kg Applications Weighing, Check weighing, Percentage weighing, Parts counting,

*The same models are available with motorised internal calibration as series denoted with ‘i’

PGW

253e

PGW

453e

PGW

753e

PGW

1502e

PGW

2502e

PGW

3502e

Taiwan and Singapore), mommes, tolas, ticals and Newtons

10°C - 40°C

or temperature

(glass weighing chamber for models with 1mg readability)

251 × 358 × 104 mm

Animal / dynamic weighing, Density determination

PGW

4502e

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3.0 UNPACKING THE BALANCE

Remove the balance from the packing by carefully lifting it out of the box. Inside the box you will find everything needed to start using the balance-

9 AC adapter 9 Four rubber pan supports 9 Stainless Steel Top Pan 9 Draught shield (for mg models only)

9 This User Manual

4.0 LOCATING THE BALANCE

• The balance should not be placed in a location that will reduce the accuracy.

• Avoid extremes of temperature. Do not place in direct sunlight or near air conditioning vents.

• Avoid unsuitable tables. The table or floor must be rigid and not vibrate.

• Avoid unstable power sources. Do not use near large users of electricity such as welding equipment or large motors.

• Do not place near vibrating machinery.

• Avoid high humidity that might cause

condensation. Avoid direct contact with water. Do not spray or immerse the balances in water.

• Avoid air movement such as from fans or opening doors. Do not place near open windows or air-conditioning vents.

• Keep the balance clean. Do not stack material on the balances when they are not in use.

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5.0 SETTING UP THE BALANCE

5.1 ASSEMBLING THE BALANCE

• Locate the balance on a solid surface, free from vibration

• Gently place the 4 pan supports (if not already fitted) and then the

stainless steel pan on the weighing platform

• Place the draught shield frame and the top cover around the pan (for mg models only)

• Level the balance using the adjustable feet and spirit level

• Connect power to the balance

• For best performance, let the balance warm up for 30-60 minutes and

calibrate before using

5.2 LEVELLING THE BALANCE

After placing the balance in a suitable place, level it by using the spirit level on the rear of the balance. To level the balance turn the two adjustable feet at the rear of the balance until the bubble in the spirit level is centred.

5.3 WARM-UP TIME

Attach the power supply cable to the connector on the rear of the balance. Plug the power supply module into the mains. The display will indicate the balance serial number (if set) and the software revision number followed by the capacity of the balance. Next the balance will run a self-test by displaying all segments followed by a symbol indicating the balance is in busy mode. If the balance serial number is not set the display will show dashes. The display will show zeroes accompanied by the

Î0Í

symbol. If the balance is not used for a long time, it will go back to the auto-calibration mode.

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Before you start weighing, you have to wait for the balance to achieve a stable internal temperature. Typical initial warm-up time suggested for a balance already at room temperature is about 1 hour.

A stable sign ~ is shown when the balance is in stable condition. It will turn off if the balance is not stable.

6.0 DISPLAY

This display includes areas for the weight value (up to 7 digits), symbols for common weighing units, tare, stability, zero and low battery, arrows used for check weighing, a 0-100% bar graph and a text area for menu.

The LCD has 7 x 7-segment digits for the weight and 10 x 14segment digits for messages, symbols for weighing units and common use such as stability etc.

The 14 segment digits allow a large amount of flexibility for any unusual weighing unit, and messages concerning operation or errors.

The Percentage indicator known as capacity tracker has 10 large segments for showing the percentage of the total range used. This is also used during check-weighing.

The 10 digit text area is used to display the current weighing mode or to guide the user through processes such as density determination.

Exact zero is shown when the on to the left of the display area.

“Î0Í “ symbol is

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SYMBOLS AND TEXT

The LCD has unique symbols to indicate the following:

Î0Í

Zero Busy Stable

A fill guide with set point markers

g, mg, kg, ct, oz, lb, ozt, GN, dwt, dr, tl H, tl T, tl S, MM, T, ti,

Text is shown for the weighing units and modes

N, g/cc, Pcs, %, M, and S

INDICATORS

CAL”

“ “ºC”

“ti” “Net” “0%”, “100%”

When calibration is occurring or about to occur When a temperature is shown or a temperature driven calibration is to

occur For a time driven calibration

When a net weight is shown When the capacity tracker is showing percent of maximum range used

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7.0 KEYPAD

The keypad has the following keys to operate the balance.

Keys Primary function Secondary function

[Î0/TÍ] or [Esc] [Unit] / Ð or [Down]

[Mode] / Î or [Advance]

[Print] / Í or [Back] [Cal] / or Ï [Up]

[Setup]/

or [Enter]

To turn the balance to ON or OFF A combined zero and tare function Selects weighing units by cycling through a set of enabled units Selects functions by cycling through a set of enabled functions, for example parts counting, animal weighing, percent weighing or density Instructs the balance to print data Starts the calibration function To increase or change a

Enters a function or saves a value during setting up such as entering unit weight or check weighing limits manually

To escape from setup

functions and modes To decrement or change a displayed value or scroll through options backwards To advance a flashing digit by one position to the right

To go back by one step during setup functions To advance a flashing digit by one position to the left

displayed value or scroll through options forward

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

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8.0 INPUT/OUTPUT

The rear panel has connectors for RS-232 serial and buffered I

C-bus interfaces and a power input socket. Required power input is a low-voltage external supply, 15VDC @ 800mA.

Various communication options, e.g. USB, LAN, Wireless, will be implemented in the future via add-on “black-boxes” which will convert the RS-232 serial output or I

C to the desired protocol. The basic unit includes RS-232 serial communications only.

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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 a passcode has been set, the display will show “PASSCODE” and the main display will show a zero. In this case you must enter the passcode to continue using the numeric entry method (see section 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 “

Î0Í” and the

weighing unit last used. If automatic time calibration is enabled the balance will calibrate after power up and again after the pre-set time interval.

9.2 PASSCODES

If a passcode has been set to limit access to the weighing functions of the balance the display will show “PASSCODES” with the main digit set to zero. The display will change to show 7 digits set to zero with the rightmost digit flashing. Use the numeric entry method (see section 7.1) to enter the code. Make sure to enter the correct passcode to continue. See the Section 13.6 for details.

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9.3 WEIGHING

• Press [Î0/TÍ] to zero the balance, if required

• “Î0Í “ will be displayed

• Place a mass on the pan and the weight will be displayed

• If a container is used press [Î0/TÍ] to tare the balance when the

balance symbol “~” is on. “Net” will be displayed to 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 respect to the maximum weighing capacity

• At any time the [Unit] key can be pressed to select another unit. Use the [Up] or [Down] key to scroll through the units and select the desired unit by pressing the [Enter] key, 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 weighing units that have been enabled will be cycled through when the [Unit] key is pressed

9.3.1 Weighing Units

You can select alternative weighing units to display the weight by pressing the [Unit] key. The common weighing units are:

Unit Symbol Models Conversion Factor

1g =

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 9 Ounces oz All 0.035273962 28.349523 5 Pounds lb All 0.0022046 453.5924

10 Troy ounces ozt All 0.032150747 31.103476

6 Grains GN All 15.43236 0.0647989

11 Pennyweights dwt All 0.643014865 1.555174

8 Drams dr All 0.564383422 1.7718451 14 HK Taels tl H All 0.026717251 37.42900 13 Taiwan Taels tl T All 0.026666702 37.49995

Conversion Factor

1 unit = grams

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