Related Manuals for Symmetry PR series
Summary of Contents for Symmetry PR series
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Page 1: User Manual
PR Series Precision Toploading Balances USER MANUAL Software Revision: 2.35 P.N. 8190, Revision A1, September 2006... - Page 2 Page 2 of 32 P.N. 8190, Revision A1, September 2006...
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Page 3: Table Of Contents
Page 3 of 32 CONTENTS 1.0 INTRODUCTION ......................4 2.0 TECHNICAL SPECIFICATIONS...................5 3.0 UNPACKING THE BALANCE..................6 4.0 LOCATING THE BALANCE..................6 5.0 SETTING UP THE BALANCE ..................7 ASSEMBLING THE BALANCE ................7 LEVELLING THE BALANCE .................7 WARM-UP TIME ....................7 DISPLAY........................8 7.0 KEYPAD ........................9 NUMERIC ENTRY METHOD ................9 8.0 INPUT/OUTPUT ......................10 9.0 OPERATIONS ......................11... -
Page 4: Introduction
Page 4 of 32 1.0 INTRODUCTION Thank you for selecting the Precision Balance. This Instruction Manual will familiarise you with the installation, trouble- shooting, 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. -
Page 5: Technical Specifications
Page 5 of 32 2.0 TECHNICAL SPECIFICATIONS 210g model 410g model 2200g model 4200g model Maximum 210g 410g 2200g 4200g capacity Readability 0.001g 0.01g Typical 0.002g 0.02g Repeatability Linearity (±) 0.003g 0.03g Tare range Full Units of grams, milligrams, kilograms, carats, pennyweights, grains, measure troy ounce, ounces Interface... -
Page 6: Unpacking The Balance
Page 6 of 32 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 Four plastic pan supports Stainless Steel Top Pan Breeze / draught shield (For 0.001g models) This User Manual... -
Page 7: Setting Up The Balance
Page 7 of 32 5.0 SETTING UP THE BALANCE 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 •... -
Page 8: Display
Page 8 of 32 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 and a text area for menu. The LCD has 7 x 7-segment digits for the weight and 10 x 14 - segment digits for messages, symbols for weighing units and indicators such as stability etc. -
Page 9: Keypad
Page 9 of 32 7.0 KEYPAD The keypad has the following keys to operate the balance. Keys Primary function Secondary function [On/Off] To turn the balance to ON or [Tare] or [Esc] A combined zero and tare To escape from setup function functions and modes [Cal] /... -
Page 10: Input/Output
Page 10 of 32 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”... -
Page 11: Operations
Page 11 of 32 9.0 OPERATIONS 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. -
Page 12: Weighing
Page 12 of 32 WEIGHING • Press [Tare] 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 [Tare] to tare the balance when the stable symbol “~”... -
Page 13: Functions
Page 13 of 32 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 (2.35): • Parts counting • Percent weighing The functions can be enabled or disabled using a similar method to the Units above by turning the functions to on or off. -
Page 14: Percent Weighing
Page 14 of 32 9.4.2 Percent Weighing Percent weighing is carried out by defining a sample weight as 100%. The sample weight 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”... -
Page 15: Calibration
Page 15 of 32 10.0 CALIBRATION The balances are calibrated using an external mass. • Press the [Cal] key to start calibration. • Pressing [Esc] will abort the calibration at any time • Check the display is at zero. Tare, if necessary •... -
Page 16: Rs-232 Interface
Page 16 of 32 11.0 RS-232 INTERFACE The balances have the ability to send data to 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. - Page 17 Page 17 of 32 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 % A blank line printed <CR><LF> 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).
- Page 18 Page 18 of 32 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 <CR>...
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Page 19: Error Checking
Page 19 of 32 12.0 ERROR CHECKING During weighing the balance is constantly checking to see if the balance 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. -
Page 20: Supervisor Menus
Page 20 of 32 13.0 SUPERVISOR MENUS Pressing the [Setup] key while in normal weighing gives access to the Supervisor menus. • When [Setup] is pressed and passcodes are not enabled, the display will show the message “SUPERVISOR”. If passcodes are enabled, the balance will ask for it by displaying “PASSCODE 0”... -
Page 21: Enable Weighing Modes
Page 21 of 32 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 “OFF”... - Page 22 Page 22 of 32 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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Page 23: Setup Parameters
Page 23 of 32 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. LANGUAGE English French... -
Page 24: Calibration Setup
Page 24 of 32 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 •... -
Page 25: Passcodes
Page 25 of 32 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. -
Page 26: Safety And Maintenance
Page 26 of 32 14.0 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. - Page 27 Page 27 of 32 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.
- Page 28 Page 28 of 32 to look for sources of friction. Balance is very Mechanical problems A complete inspection of the mechanics unstable and does not to look for sources of friction. weigh correctly Verify the A/D is also unstable. If the Balance programming A/D is OK then suspect the programming of the balance.
- Page 29 Page 29 of 32 Poor Linearity Usually a mechanical Re-check repeatability problem Inspect the flexures for damage or loose hardware Use the Linearity Function in the service menu to reset linearity A problem in the analogue circuit board Electronic Problems or power supplies can cause poor linearity.
- Page 30 Page 30 of 32 P.N. 8190, Revision A1, September 2006...
- Page 31 Page 31 of 32 Manufacturer’s Declaration of Conformity This product has been manufactured in accordance with the harmonised European standards, following the provisions of the below stated directives: Electro Magnetic Compatibility Directive 89/336/EEC Low Voltage Directive 73/23/EEC FCC COMPLIANCE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
- Page 32 Page 32 of 32 © Copyright by the manufacturer. All rights reserved. No part of this publication may be reprinted or translated in any form or by any means without the prior permission of the manufacturer. The manufacturer reserves the right to make changes to the technology, features, specifications and design of the equipment without notice.