Ohaus Corporation 29 Hanover Road Florham Park NJ 07932-0900 ANALYTICAL Plus Electronic Balances Models AP110, AP210, AP310, AP250D, AP110E, AP210E, AP310E and AP250E Instruction Manual 1
NOTE: 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. THESE LIMITS ARE DESIGNED TO PROVIDE REASONABLE PROTECTION AGAINST HARMFUL INTERFERENCE WHEN THE EQUIPMENT IS OPERATED IN A COMMERCIAL ENVIRONMENT. THIS EQUIPMENT GENERATES, USES, AND CAN RADIATE RADIO FREQUENCY ENERGY AND, IF NOT INSTALLED AND USED IN ACCORDANCE WITH THE INSTRUCTION MANUAL, MAY CAUSE HARMFUL INTERFERENCE TO RADIO COMMUNICATIONS.
TABLE OF CONTENTS INTRODUCTION .................................................................................................. 7 DESCRIPTION ..................................................................................................... 7 FEATURES .......................................................................................................... 7 UNPACKING ........................................................................................................ 8 INSTALLATION ................
Reference Number .................................................................................. 26 High Point .................................................................................................... 26 Printing Data ............................................................................................... 27 Time and Date ......................................................................................... 27 List .....................................................................
SETUP MENU .................................................................................................... 41 Setup Menu Protection ............................................................................... 42 Reset ........................................................................................................... 42 Type Approved/LFT .................................................................................... 43 Unit Selection ......................................................
Print Stable Data Only ............................................................................. 63 Print Numeric Data Only .......................................................................... 63 Time ......................................................................................................... 64 Date ......................................................................................................... 64 Reference ....................................................................
INTRODUCTION INTRODUCTION This manual covers Installation, Operation and Troubleshooting for the Ohaus ANALYTICAL Plus Series of Electronic balances, Models AP110, AP210, AP310, AP250D, AP110E, AP210E, AP310E and AP250E. Suffixes after the basic model number are: D = Dual Range and E= Type Approved with CE conformance and bear official markings (Max, Min, Class, etc.) on a serial number plate located on the side of the balance. To ensure proper operation of the balance, please read this manual completely.
INSTALLATION UNPACKING Your ANALYTICAL Plus balance was shipped with the following items: • • • • • • Pan assembly (including pan, shield, ring and assembly instructions) In-service cover AC power cord Spare fuse Instruction manual Warranty card Remove the contents from the carton and carefully remove all packing material. It is recommended to save the carton and packing material for storing and/or transporting the balance.
INSTALLATION INSTALLATION Environment The balance should always be used in an environment which is free from excessive air currents, corrosives, vibration, and temperature or humidity extremes. These factors will affect displayed weight readings. DO NOT install the balance: • • • • next to open windows or doors causing drafts or rapid temperature changes. near air conditioning or heat vents. near vibrating, rotating or reciprocating equipment.
INSTALLATION Leveling the Balance The balance is equipped with a level indicator on the floor of the weighing chamber and two adjustable leveling feet at the rear. Adjust the leveling feet until the bubble appears in the center circle of the level indicator. Level Indicator Leveling Feet Installing the Pan Assembly 1. 2. 3. Place the shield onto the keyed bushing and press it down into place. The bent tabs must be facing upward and the shield should be flat against the chamber floor.
INSTALLATION RS232 INTERFACE ANALYTICAL Plus balances are equipped with a bi-directional RS232 compatible interface for communication with printers and computers. When the balance is connected directly to a printer, displayed data can be output at any time by simply pressing PRINT, or by using the Auto Print feature. Connecting the balance to a computer enables you to operate the balance from the computer, as well as receive data such as displayed weight, weighing mode, stability status, etc.
INSTALLATION RS232 COMMAND TABLE Command Character ? Description Print current unit. Field: Mode Stab CR Length: 5 1 1 GRAMS, DWT, CARAT, OZ AV, OZ T, GRAIN, TAEL 1, TAEL 2, TAEL 3, MOMME, CUSTOM UNIT xI xM blank if stable “ ? ” if unstable 0 1 2 Set averaging level to "x", where x = 0, 1, 2 Places balance in mode "x", where x = 1 to 11 (see table). 1 2 3 4 5 6 7 8 11 If unit is not already enabled, command will be ignored.
INSTALLATION Command Character xS T V Description Set stable data only printing (set x = 0 for OFF, or x = 1 for ON. Same effect as pressing on tare button. Print EPROM version Field: Model # 1 EPROM # CR LF Length: 6 16 Balance Model x# x% xF xZ xSL Z nnnA Esc S 1 "98101-xx Sr#x.xx" Set current ref., any function, CW takes two reference separated by a space. Doanloads reference weight "x" for percent mode. "x" must be in grams. Command is ignored if percent mode is disabled.
INSTALLATION Connecting Power 1. Before connecting the power cord, check that the line voltage switch located at the rear of the balance is set correctly for your location. If not, use a small screwdriver to set the switch correctly. 2. Make sure the doors to the weighing chamber are closed. 2. Connect the power cord receptacle to the plug on the rear of the balance. 3. Plug the power cord into a convenient AC outlet. The balance signals one long beep to indicate power has been applied.
OPERATION OPERATION Switch Functions Press and Release Release: Turns on the balance if it is off, zeros the balance. In the menu system, this button is used to accept a choice or enter a submenu. Press and Release Release: Turns the balance off. Press and Release Release: Selects weighing units functions or options. In menus, changes to next step or value. Press and Release Release: Sends weight data, statistical data, GLP data to computer/printer. In menus, allows returning to a previous menu step.
OPERATION Symbols Used for Operation of the Balance This instruction manual uses certain symbols to explain various operational procedures and actions that occur.
OPERATION Navigating the Menus There are four menus used in the balance: CALIBRATION USER To enter the menus menus, the SETUP PRINT button is pressed and held until MENU is displayed. When released, CAL is displayed which is the Calibration menu. When in the menus menus, repeated pressing of menus. CALIBRATION USER SETUP advances through the PRINT END MENU Each menu contains selections (submenus) which can be set for specific operations.
OPERATION Operational Guide/Index The Operational Guide/Index lists the pages for all balance operations and options. After settings are made, exit menus to save settings. FUNCTION 1. 2. 3. 4. TO OPERATE ((See pages) Turning the Balance ON 19 Weighing (grams) 20 Taring 20 Percent Weighing 21 SETUP (See pages) ---------44 5. Parts Counting 6. Check weighing 7. Animal Weighing 8. Fill Guide 22 23 44, 49 44, 49 24 25 44, 52 44, 52 9. High Point 10. Printing Data 11. List 12. Menu Lockout 13.
OPERATION Turning the Balance ON 1. After the Self Test in the Installation Section is completed (power applied to the balance), make sure the pan on the balance is clear, then, close the chamber doors. 2. Display Indications The following table describes each of the display indicators.
OPERATION Stabilization Before initally using the balance, allow time for it to adjust to its new environment. The balance only requires to be plugged in to warm up. Recommended warm up period is twenty (20) minutes. The balance is powered whenever it is plugged into a power source. Auto Range (AP250D and E Only) Modes AP250D and E offer both a fine range (0.01 mg readability from 0 to 52 g) and a coarse range (0.1 mg over 52 g). When first turned on, the balance is in the fine range.
OPERATION Percent Weighing Percent Weighing is enabled only when EXAMPLE the Percent Function is selected under the Setup menu. Refer to page 38. Percent A 10g reference load is set for 20%: weighing permits you to place a reference • A subsequent load of 100 g will be load on the balance, then view other loads displayed as 200%. as a percentage of the reference. The load • A subsequent load of 200 g will be you place on the platform as a reference displayed as 400%.
OPERATION Parts Counting Parts Counting is enabled only when the Parts Counting Function is selected in the Setup menu. Refer to page 38. In the parts counting mode, the balance displays the quantity of parts you place on the pan. Since the balance determines the quantity based on the average weight of a single part, all parts must be reasonably uniform in weight. The accuracy of parts counting results is determined by the error level entered in PC Err of the Setup Options submenu. Refer to page 43.
OPERATION Check Weighing Check Weighing is enabled only when the Check Weighing Function is selected in the Setup menu. Refer to page 38. Refer to page 43, Check Weighing Options under the Setup menu to set the Reference Type and Display Type options. In the check weighing mode, a reference weight can be set into the balance either as a reference weight on the pan or as a user entered number. The balance display shows either under, accept or over as each sample is weighed.
OPERATION Check Weighing (Cont.) 13. Repeat steps 10 and 11 to set the over value. When the last digit is entered, the display indicates one of three display modes for check weighing. 14. Check weighing can now be performed by removing a sample and placing a new sample on the platform. allows other weighing units to be displayed if previously 15. selected. Animal Weighing Animal Weighing is enabled only when Animal Weighing Function is selected under the Setup menu. Refer to page 38.
OPERATION Fill Guide Fill Guide is enabled only when Fill Guide Function is selected under the Setup menu. Refer to page 38. To set options, refer to page 46, Fill Options under the Setup Options submenu. FILLGUIDETM BAR GRAPH The FillGuideTM is a bar graph which apFILLGUIDETM INDICATOR pears in the upper right hand portion of the display. When the load on the balance is at the balance's capacity, all of the segments are on. When the load is at half capacity, only the first half of the segments are on.
OPERATION Fill Guide (Cont.) Reference Number If reference number was selected under the Fill Option submenu with the balance in a weighing mode, proceed as follows: 1. . 2. . Set the flashing digit to the desired weight value. 3. 4. until the first digit is correctly displayed. to accept the digit. 5. Repeat steps 3 and 4 until all digits are set. When the last digit is entered , the balance is automatically in the fill mode. 6. The fill mode can now be used by placing samples on the pan.
OPERATION High Point (Cont.) 4. To view the lowest and highest sample weight. The display LIMIT flashes, the lowest sample weight is displayed followed by two short beeps, display then indicates the highest sample weight for a few seconds then automatically changes back to the normal weighing mode. the 40g 20g 5g 4g 2g NOT DISPLAYED ORDER SAMPLES TAKEN IN 5. To use the High Point function again, repeat steps 1 through 4. to exit High Point and return to a weighing 6. mode.
OPERATION Printing Data (Cont.) List List is a convienent method of examining which parameters are set up in the balance. The parameters do not show up on the display but print out when selected. Both the Setup and Print menus have a List function. When LIST is displayed in either the Setup or Print Menu, causes the pa- rameters of the User, Setup and Print menus to be printed on an external printer or computer screen. The sample shown, indicates the status in three menus.
OPERATION Printing Data (Cont.) Automatic Calibration Printout When performing an Automatic calibration with CAL option (GLP submenu of the Setup Options submenu set to ON), a printout is made after calibration is completed. - - - - - AUTO SPAN CAL - - - - - 6/22/95 8:42:24 AM Bal Id 183 Auto. Cal. completed ! Dif: - 0.00136g ID 2000000 PR 10000 Name........................................
OPERATION Printing Data (Cont.) Statistics Printout When statistics is enabled, a printout can be made with any of the major balance functions such as; Percent, Parts Counting, Check Weighing, Animal Weighing and FillGuideTM. Under the Setup Options menu, Statistics has parameters such as Enable, Standard Deviation, Mean, Sum, High, Low and Difference which can be turned on or off. Statistics can be printed any time the balance is operational and statistics is enabled (turned on).
OPERATION Printing Data (Cont.) Percent Weighing Statistical printouts of Percent Weighing are similar to sampling statistics. Loads on the balance platform may be displayed as a percentage of a defined sample. To obtain a printout in this mode, the balance must be set up in Percent Weighing. Refer to basic Sampling procedure for operation. The sample illustration shown at the right had the balance reference set to 100% using a weight of 25.22573 grams.
OPERATION Printing Data (Cont.) Check Weighing When the balance is in a Check Weighing mode, each sample can be checked to print an under, accept or over weight on the printout by setting the Print Options parameter Difference to ON. Use the procedure described in Sampling to obtain data by pressing each time a sample is weighed. - - - - - START - - - - 6/22/95 12:09:29 PM 1 17.28667 g Fill Dif 7.95202 g 2 31.75109 g Fill Dif 6.51240 g 3 13.85533 g Fill Dif 11.38335 g 4 200.0372 g Fill Dif 174.
MENUS MENUS Each submenu of the AP Balance contains numerous selections which can be set for specific operations. To customize the operation of the balance for specific measurements, functions and printing, it is necessary to make selections in each menu. The following illustration identifies the major items in each menu. The factory default settings are shown in bold type.
MENUS MENU LOCK-OUT PROTECTION The menus can be locked out to prevent settings from being changed. When locked out, Setup and Print menus may still be accessed for viewing but settings may not be changed. The word SAFE will be displayed before the menus indicating they have been locked out. Unlocked Remove plug to access switch. Locked Before setting menus for Lock or Unlock in the Loc SW section , this lock-out switch must be set to Unlock. After selections are made, set this switch to Lock. 1.
MENUS CALIBRATION MENU Analytical Plus balances features Auto, USER and TEST calibration methods. Auto is a method where the balance calibrates itself using internal calibrated masses. USER is a method where the balance can be calibrated using an external mass of known value by entering that value into the balance. Test allows the stored calibration data to be tested against the internal mass being used for the test.
MENUS User Calibration User calibration is used when it is desired to calibrate the balance using a mass of known value. NOTE NOTE: Before beginning user calibration, make sure masses are on hand. If you are in the calibration menu and realize masses are not available or you do not want to calibrate, exit the menus and return to normal weighing. USER CALIBRATION MASSES MODEL Refer to the adjacent table for correct mass values to use with the balance.
MENUS Cal Test This feature checks the calibration against last stored calibration information. The Cal Error display indicates the difference since the last automatic calibration. 1. Make sure there is no load on the pan and close the chamber doors. 2. . 3. 4. . 5. Cal End To exit the calibration menus, proceed as follows: 1. 2. . . 3. 4. . . 5. 6. . .
MENUS USER MENU The User menu is used to adapt the balance to environmental conditions. It contains submenus which enable you to turn features on or off, and program balance parameters. Reset changes all submenus to original factory default settings. Reset does not appear if menu has been locked out. AL specifies the averaging level. STB specifies the desired stability range. Auto Zero sets the automatic zero threshold. Dual, when set on, enables dual range function on model AP250D.
MENUS Averaging Level Averaging level compensates for vibration or excessive air currents. Factory default setting is shown in bold type. AL 0 reduced stability, fastest stabilization time AL 1 normal stability, normal stabilization time AL 2 more stability, slow stabilization time NOTE NOTE: Averaging level does not affect balance accuracy, but it does affect stabilization time. To view or change the averaging level: 1. Access the Averaging Level 2. submenu. . 3. to select 4. through . .
MENUS Auto-Zero Auto-Zero minimizes the effects of temperature changes and shift on the zero reading. The balance maintains the zero display until the threshold is exceeded. Factory default setting is shown in bold type. OFF Turns Auto-Zero OFF. On Turns Auto-Zero ON. To view or change the auto-zero setting: 1. Access the Auto-Zero 2. 3. submenu. . to select 4. or . . Dual Range Function Enables dual range operation on model AP250D only. To turn the feature ON, proceed as follows: 1.
MENUS SETUP MENU The Setup menu is used to customize the operation of the balance for your specific requirements. It contains submenus which enable you to turn features on or off, and program balance parameters. Reset changes all submenus to original factory default settings. Reset does not appear if menu has been locked out. LFT sets the balance for type approved operation. SEL (selection) specifies one of nine weighing units with a custom unit for specialized applications.
MENUS Setup Menu Protection SETUP MENU FACTORY DEFAULTS The Setup menu may be locked out to prevent unauthorized personnel from changing the settings. If -SAFE- is displayed, the Setup menu has been locked out. Settings may be viewed but not changed. To lock out the Setup menu, refer to the section titled Menu Lock-Out Protection.
MENUS Type Approved/LFT LFT can be set to ON or OFF. Selecting ON automatically sets the parameters shown in the table to conform to type approved requirements. For sealing method, refer to Type Approved Sealing section. Default setting are shown as follows: Lockswitch Menu Print Stable Data Only Setup Locked ON 1. Access the submenu. 2. . 3. or . . 4. Unit Selection The Unit Selection (SEL) submenu permits the selection of weighing units for use during operation.
MENUS Unit Selection (Cont.) Taels If taels are enabled, choose one of three different taels: Hong Kong, Singapore, or Taiwan. 1. . 2. (Hong Kong), (Singapore), or (Taiwan). 3. . Functions The Functions submenu permits the selection of only one function. These functions are: Percent, Parts Counting. Check Weighing, Animal Weighing, FillGuideTM, High Point or None. The default setting is none none. Only one function at a time can be selected for balance operation.
MENUS Statistics Statistics provides printed display data of: Standard Deviation either population or sample, Mean, Sum, High, Low and Difference readings. Each can be individually set ON or OFF. 1. Access menu. 2. . 3. . Enable allows the statistics feature to be turned off without losing the individual settings programmed into memory. 4. . 5. or 6. . 7. . 8. . 9. . , , . 10. 11. 12. . to select other parameters. to accept. 13. or 14. . . 15.
MENUS Net Weight shown on the display can be referred to as a zero value (gross value) or tare value (net value). When enabled the display value also has GROSS/NET Indicator turned ON, this feature will allow you to obtain a zero value by a long press on . A short press is a tare. Net Weight - the weight of a material or sample after deducting the weight of its packaging or container with which it had previously been weighed.
MENUS Custom Unit or Volume Selection (Cont.) 1. Access the submenu under the Setup Options menu. 2. . 3. . EXPONENTS The mantissa of the current conver sion is displayed. The mantissa of the current conversion factor is dis played. This is a number between 0.1 and 1.999999 with the first digit flashing. For conversion factors outside of this range, the exponent will be used to move the decimal point. changes first digit. 4. 5. . E-3 Moves decimal point 3 places to the left.
MENUS Custom Unit or Volume Selection (Cont.) 14. . 15. , , , . Selecting NONE disables the volumetric units. . 16. NOTE NOTE: To use this function the printer must be on and all communication parameters must be set first. Operating Procedure to tare the container . 1. Place a container on the platform, 2. Fill the container. 3. , printer will now print out quantity of selected unit of measurement.
MENUS Parts Counting Error Parts counting Error is enabled only when the Parts Counting Function is selected. ERROR LEVELS The parts counting error level is the level of accuracy you consider acceptable for parts counting results. The adjacent table lists error levels that you can choose from. The default setting is shown in bold type. EXAMPLE: With 5 Pct selected, 100 parts on the platform may yield a displayed count from 95 to 105 parts. OFF Disables error level limits. .1 % ±0.1% acceptable error.
MENUS SAMPLE DISPLAYS NOTE NOTE: Samples of the displays for check weighing are shown as follows using a reference weight of 50 grams. The over limit was set at 55 grams, and the lower limit was set at 45 grams. NORMAL DISPLAYS When normal is selected, the display indicates the actual weight. NONE DISPLAYS When none is selected, the numeric section of the display is blank if the values exceed the limits. Numbers appear only if they are within the limits.
MENUS Check Weighing Options (Cont.) The following procedure describes how to set up the balance for all choices. Before starting, the Check Weighing option must have been selected under the Functions submenu. 1. Access the submenu under the Setup Options sub menu. 2. (reference). 3. (reference weight). 4. . If REF WT is selected, a sample reference is used later to set the weight parameter into the balance. If NUMBER is selected, a number representing the sample weight has to be entered manually.
MENUS Animal Weighing Options Animal Weighing Options is enabled only when Animal Weighing Function is selected. The balance samples the weight data for a variable sampling interval and processes the data to filter out the instabilities by the live animal. The strength of the filtering activity as well as the duration of the sampling period can be adjusted by selecting one of four AW OPT levels, 0 through 3.
MENUS Fill Option (Cont.) 5. . If REF WT is selected, a sample reference weight is used later to set the weight parameter into the balance. If NUMBER is selected, a number representing the desired sample weight has to be entered. Select either REF WT or NUMBER. 6. . 7. . When target is selected, the balance will show the normal weight of the object on the pan. 8. . 9. or . When zero is selected, the balance indicates the weight as a negative number after the reference is set in the main menu.
MENUS Time (Cont.) 6. . first two digits are flashing. 7. or 8. to change flashing digits to current local hour. flashes the last two digits. 9. NOTE NOTE: will back up display. 10 or 11. changes minutes display. to accept. AM or PM is flashing, A for AM, P for PM. 12. to select AM or PM. 13. . Adjust Adjust is a feature which enables the internal clock of the balance to be corrected + or - 59 seconds a day. The internal clock is accurate to within 8 seconds a day.
MENUS Date Date is a feature which enables the balance to be set to a U.S.A. date standard or European date standard. U.S. standard has the month, date followed by the year each separated by (/) in the printout. The European date standard has the day first, followed by the month and then the year each separated by a period. The default setting is US Standard. submenu which is under Setup menu. 1. Access the 2. . 3. . 4. or 5. . 6. . 7. 8. . flashes first two digits.
MENUS Lockswitch Lockswitch enables you to lock out one or more menu selections. Each menu can be Calibration, User, individually locked on or off after all functions have been set. The Calibration Setup and Print menus can be individually locked on or off by selecting the appropriate menu and then locked by the switch located under the front of the control panel. See Menu Lockout Section. Cal Test under Calibration remains functional with the Lockswitch On or Off.
MENUS PRINT MENU The Print menu provides a number of options which includes: reset, communications, good laboratory practices, print options, and list. Reset sets all submenus contained in the Print menu to factory default settings. Communication specifies baud rate, number of data bits, parity bit type and stop bits. GLP Good laboratory practices permits the entering of your own identification number and project number which shows up on printing.
MENUS Reset This submenu enables you to reset all Print menu selections to the factory default settings shown below. Reset does not appear if the menu has been locked out. Function Baud Rate Data Bits Parity Stop Bits Auto Print Auto Print interval Non Print Low Limit Non Print High Limit Stable data Only Numeric Data Only Time Date Default br2400 7 data none 2 stop OFF 1 second 0 0 OFF OFF OFF OFF . 1. 2. . 3. . 4. . or 5. . If 6. .
MENUS Baud Rate This submenu is used to select the desired baud rate. There are five available baud rates to choose from: 300, 1200, 2400, 4800 and 9600. The default setting is 2400 baud. To view or change the baud rate: submenu. 1. Access the . 2. 3. , , , , , . Normal baud rate is 2400. 4. . Data Bits To set the number of data bits to 7 or 8: submenu. 1. Access the 2. . 3. 4. or . 59 .
MENUS Parity Parity can be set to Odd, Even or None. The default setting is None. To set parity, proceed as follows: submenu. 1. Access the 2. . 3. , , . . 4. Stop Bits The number of stop bits can be set to 1 or 2. The default setting is 2. To set stop bits, proceed as follows: submenu. 1. Access the 2. . 3. or 4. . . Good Laboratory Practice (GLP) This submenu enables the storage of an identification number and/or a project number.
MENUS Good Laboratory Practice (GLP) (Cont.) NOTE NOTE: 5. allows going back to the previous digit for correction. accepts value and moves to second digit. 6. to change next digit. 7. Repeat steps 4 through 6 to change all digits. 8. . 9. to enter project number. 10. and repeat steps 3 through 7. 11. .
MENUS Initialize This submenu allows you to: • Specify a time interval (in seconds) for automatic output. • Exclude a range of weights from being output, or specify a range for output, by the Auto Print feature. It does not appear on the Print menu if Auto Print is set to OFF. Use the following procedure to set these features: 1. Access the submenu under the Print Options submenu. displays if Interval was selected in the Auto 2. Print submenu and you may continue with step 3.
MENUS Initialize (Cont.) 11. After the last digit is entered, is displayed again. 12. for the high limit. 13. indicates current high end value. 14. Repeat steps 8 through 10 to change the numbers as required. displayed again. 15. After the last digit is entered, 16. . 17. . Print Stable Data Only When enabled, this feature permits only stable display data to be output. To set the feature ON or OFF, proceed as follows: submenu under the Print Options menu. 1. Access the 2. . 3. 4. or . .
MENUS Time When the Time function is set ON, allows the balance to output the current time to the printer. To set the Time feature ON or OFF, proceed as follows: submenu under the Print Options menu 1. Access the 2. . 3. or 4. . . Date When the Date function is set ON, allows the balance to output the current date to the printer. To set the Date feature ON or OFF, proceed as follows: submenu under the Print Options menu 1. Access the . 2. 3. or 4. . .
MENUS Difference Difference data is only output to the printer when Check Weighing or Fill GuideTM mode was selected. 1. Access the 2. submenu under the Print Options menu . 3. 4. or . . List This submenu can be used to output a listing of current menu settings via the RS232 interface. When selected, all menu settings for the User, Setup and Print menus will be output either to an external printer or computer. To use this feature, your balance must be connected to a computer or printer. 1.
MAINTENANCE CARE AND MAINTENANCE To keep the balance operating properly, the housing and platform should be kept clean and free from foreign material. If necessary, a cloth dampened with a mild detergent may be used. Keep calibration masses in a safe dry place. TROUBLESHOOTING SYMPTOM PROBABLE CAUSE(S) REMEDY Unit will not turn on. Power cord not plugged in or properly connected to balance. Incorrect weight reading. Balance was not re-zeroed Press with no before weighing.
MAINTENANCE Error Codes List The following list describes the various error codes and which can appear on the display and the suggested remedy. Data Errors 0.0 Internal data errors. If error persists, the balance must be serviced. 1.0 Internal data errors. If error persists, the balance must be serviced. Tare Errors 2.0 Illegal tare operation or balance is unable to stabilize within time limit after taring. Environment is too hostile or balance needs recalibration. Calibration Errors 3.
MAINTENANCE Error Codes List (Cont.) System Errors 5.1 thrrough 5.9 System errors. Turn the power off, then turn it back on. If error persists, have the balance serviced. Checksum Errors 9.7 Invalid setup data checksum. Check Setup, User, and Print menus settings. if possible, try to enter menus and exit using END to restore menu settings. May be caused by a faulty component, or in rare cases, a severe static charge. If error persists, balance must be serviced.
MAINTENANCE SERVICE INFORMATION If the Troubleshooting section does not resolve or describe your problem, you will need to contact an authorized Ohaus Service Agent. For Service assistance in the United States, please call Ohaus Corporation toll-free at (800) 526-0659. An Ohaus Product Service Specialist will be available to help you. REPLACEMENT PARTS OHAUS Part No. Power Cords: U.S.
MAINTENANCE SPECIFICATIONS MODEL Capacity (g) AP110 AP210 AP310 110 210 310 Readability (mg) Weighing modes Repeatability (Std. dev.) (mg) Linearity (mg) 0.1 0.1 ±0.2 Calibration Internal calibration weights 0.2 0.02/0.1 ±0.5 ±0.03/0.2 To capacity by subtraction 4 8 Sensitivity drift (10 - 30 °C) Operating temperature range 52/210 0.01/0.
LIMITED WARRANTY Ohaus products are warranted against defects in materials and workmanship from the date of delivery through the duration of the warranty period. During the warranty period Ohaus will repair, or, at its option, replace any component(s) that proves to be defective at no charge, provided that the product is returned, freight prepaid, to Ohaus.
Ohaus Corporation 29 Hanover Road, Florham Park, NJ 07932, USA Tel: (973) 377-9000, Fax: (973) 593-0359 With offices worldwide. P/N 78209-01 R1099 © Ohaus Corporation 1995, 1999, all rights reserved.
TABLE OF CONTENTS UNPACKING.........................................................................................................6 INSTALLATION.....................................................................................................7 Environment ...............................................................................................7 Weigh Below Hook .....................................................................................7 Leveling the Balance .............................
Parts Counting Error Level .......................................................................33 Parts Counting Alternate Display..............................................................34 Percent Weighing Alternate Display .........................................................35 Menu Lockout ...........................................................................................36 List............................................................................................................
