Nova-Tech PW Series User Manual

Adam Equipment

PW SERIES

(P.N. 8081, Revision E4, September 2007)

Software rev.: 2.43 & above

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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 Net/Total ...................................................................................................... 22

9.4.6 Density Determination.................................................................................. 23

10.0 CALIBRATION ...................................................................................................... 25

10.1 MANUAL CALIBRATION .................................................................................... 25

10.1.1 Calibration using Internal Calibration mass.................................................. 25

10.1.2 Calibration using External Calibration mass ................................................ 25

10.2 AUTOMATIC CALIBRATION.............................................................................. 26

10.3 CALIBRATION ERRORS.................................................................................... 26

11.0 RS-232 INTERFACE ............................................................................................. 27

12.0 ERROR CHECKING ............................................................................................. 30

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

13.1 ENABLE WEIGHING UNITS............................................................................... 31

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

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

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

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

13.5.1 INTERNAL CALIBRATION MASS ADJUSTMENT ...................................... 35

13.6 PASSCODES...................................................................................................... 36

13.6.1 Forgotten Passcodes................................................................................... 37

14.0 PERIPHERALS .................................................................................................... 37

14.1 DENSITY DETERMINATION KIT ....................................................................... 37

14.2 ANTI-VIBRATION TABLE................................................................................... 37

14.3 ADAM PRINTERS .............................................................................................. 37

15.0 SAFETY AND MAINTENANCE ............................................................................. 38

16.0 TROUBLE-SHOOTING ......................................................................................... 38

17.0 REPLACEMENT PARTS AND ACCESSORIES ................................................... 42

18.0 SERVICE INFORMATION .................................................................................... 42

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1.0 KNOW YOUR BALANCE

Thank you for selecting the PW 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 PW 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, net / total and density determination

• Internal Calibration using motorised internal calibration weight or external calibration, if set by the user

• Bi-directional RS-232 interface

PW series

• 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 PW 124 PW 184 PW 214 PW 254

Maximum Capacity 120g 180g 210g 250g Readability 0.0001g Tare Range Full Repeatability (S.D.) 0.00015g 0.0002g Linearity (±) 0.0002g Units of measure grams, milligrams, carats, ounces, pounds, troy ounce, grains,

pennyweights, drams, taels (Hong Kong, Taiwan and Singapore),

mommes, tolas, ticals and newtons Interface RS-232 bi-directional Operating temperature Power supply Output voltage 15 VDC, 800 mA through

External Power Supply Module- supplied as standard

(Input Voltage 100–240 V, 50/60 Hz)

Calibration Calibration with internal mass. Alternatively the user can chose to

calibrate using an external mass External Calibration mass Display Backlit LCD with dual digits (24 mm high) and capacity tracker Draught shield Supplied as standard (factory fitted) Draught shield dimensions Housing Die cast aluminium housing with glass weighing chamber Pan size Overall dimensions (wxdxh) Net weight 12 kg Applications Weighing, Check weighing, Percentage weighing, Parts counting,

Animal / dynamic weighing, Net / total and Density determination

+ 10°C to 40°C

100 g

202 x 524 x 275 mm

90 mm ø

265 x 524 x 275 mm

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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-

 AC adapter  Rectangular base plate  Locating disc  Weighing platform  Guard ring  Stainless steel top pan



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 balance on solid surface, free from vibration

• Open the sliding door and gently place the square base plate, the

locating disc, weighing platform, the guard ring and then the stainless steel top.

• Level balance using the adjustable feet and spirit level

• Connect the power to the balance

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

calibrate before using

5.2 LEVELLING THE BALANCE

After placing the balance in a suitable place, level it by using the spirit level. 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

0

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 stable. It will turn off if the balance is not stable.

6.0 DISPLAY

The LCD has several areas-

- A large 7 digit area to display the weight with symbols 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 flexibility for displaying text messages concerning menus, operation 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 indicating the percentage of the total balance capacity used and arrows for check weighing.

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

“

0

“

symbol is

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SYMBOLS AND TEXT

The LCD has unique symbols to indicate the following:

0

g, mg, ct, oz, lb, ozt, GN, dwt, dr, tl H, tl T, tl S, MM, T, ti, N, g/cc, Pcs, %, M, and S

Zero

Busy

Stable

A bar graph with set point markers

Text is shown for the weighing units and modes

INDICATORS

“

CAL

“ºC”

“ti” “

Net

“

PARTS

“

PERCENT

“NT” “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 balance is in the Parts counting mode When the balance is in the Percent weighing mode When the balance is in the Net/ Total mode 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

[0/T] or [Esc] [Unit] /  or [Down]

[Mode] /  or [Advance]

[Print] /  or [Back] [Cal] / or  [Up]

[Setup]/

or [Enter]

To turn the balance to ON or Standby A combined zero and tare function Selects weighing units by cycling through a set of enabled units Enters the Modes To advance a flashing digit

Instructs the balance to print data Starts the calibration function To increase or change a

Enters the Setup parameters (Supervisor Menus)

To escape from setup functions and modes To decrement or change a displayed value or scroll through options backwards

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 Enters a function or saves a value while 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

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8.0 INPUT/OUTPUT

The rear panel has connectors for RS-232 serial and a power input socket. Required power input is a low-voltage external supply, 15VDC @ 800mA.

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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 operator 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 “

0”

and the weighing unit last used. If automatic time calibration is enabled the balance will calibrate 15 minutes 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. Use the numeric entry method (see section 7.1) to enter the code. 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. Ensure to enter the correct passcode to continue. See the Section 13.6 for details.

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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 displayed

• If a container is used press [0/T] 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 All 1000 0.001

3 CARATS ct All 5 0.2000

4 PENNYWEIGHTS dwt All 0.643014865 1.555174

5 GRAINS GN All 15.43236 0.0647989

6 TROY OUNCES ozt All 0.032150747 31.103476

7 OUNCES oz All 0.035273962 28.349523

8 POUNDS lb All 0.0022046 453.5924

9 DRAMS dr All 0.564383422 1.7718451

10 HK TAELS tl H All 0.026717251 37.42900

11 TAIWAN TAELS tl T All 0.026666702 37.49995

12 SING TAELS tl S All 0.026455464 37.799375

13 MOMMES mm All 0.266666951 3.749996

Conversion Factor

1 unit = grams

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14 TOLAS T All 0.085735323 11.663804

15 TICAL ti All 0.0612395 16.32933

16 NEWTONS N All 0.00980665 101.921623

17 CUSTOM Custom All As specified As specified

It is possible to set the balance to display only grams. Grams will always be one of the units selected, by default.

The balance displays the alternate weighing units with as much precision as possible. For example, the 250g x 0.0001g balance could weigh up to:

Unit Maximum d = g 250g x 0.0001g

mg 250000.0 0.1 ct. 1250.0000 0.0005 dwt 160.7537 0.0001 GN 3858.090 0.002 ozt 8.037685 0.000005 oz 8.818490 0.000005 lb 0.551150 0.000001 dr 141.0958 0.0001 tl.T 6.666675 0.000005 tl.H 6.679310 0.000005 tl.S 6.613865 0.000005 MM 66.6665 0.0005 T 21.43383 0.00001 ti 15.30987 0.00001 N 2.451662 0.000001

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 version:

• Weighing

• Parts counting

• Percent weighing

• Check weighing

• Animal / dynamic weighing

• Net/Total

• Density determination

The selectable functions can be enabled using a similar method to the Units above by turning the functions on or off.

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