Ohaus Discovery Balances Instruction Manual 80104130.
80104130.
Ohaus Corporation, 19A Chapin Road, P.O. Box 2033 Pine Brook, New Jersey, 07058, USA Declaration of Conformity We, Ohaus Corporation, declare under our sole responsibility that the balance models listed below marked with “CE” - are in conformity with the directives and standards mentioned.
Important notice for verified weighing instruments Weighing Instruments verified at the place of manufacture bear one of the preceding mark on the packing label and the green ‘M’ (metrology) sticker on the descriptive plate. They may be put into service immediately. Weighing Instruments to be verified in two stages have no green ‘M’ (metrology) on the descriptive plate and bear one of the preceding identification mark on the packing label.
Ohaus Discovery EN- TABLE OF CONTENTS 1. INTRODUCTION................................................................................................................................................................ EN-3 1.1 Description...................................................................................................................................................................... EN-3 1.2 Features......................................................................................
EN- Ohaus Discovery TABLE OF CONTENTS (Cont.) 3.6 Additional Features......................................................................................................................................................... EN-30 3.6.1 3.7 Weigh Below..................................................................................................................................................... EN-30 Balance Settings...................................................................................
Ohaus Discovery 1 EN- INTRODUCTION This manual contains installation, operation and maintenance instructions for the Ohaus Discovery balances. Please read the manual completely before using the balance. 1.1 Description Ohaus Discovery balances are precision weighing instruments that will provide you with years of service if properly cared for. The Ohaus Discovery balances are available in capacities from 110 grams to 310 grams. 1.1.
EN- Ohaus Discovery 2 INSTALLATION 2.1 Unpacking Carefully remove your Discovery balance and each of its components from the package. Save the packaging to ensure safe storage and transport. 2.2 Installing Components Refer to the illustration and instructions below to identify and assemble your Discovery balance with its components. All components must be installed before using the balance. 2.2.1 Assembly 1.
Ohaus Discovery EN- 2.5 Connecting Power 2.5.1 AC Adapter Connect the AC Adapter to the wall outlet. Connect the plug into the receptacle on the rear of the balance. For use with CSA Certified (or equivalent approved) power source, which must have a limited circuit output. 2.5.2 Turning Power On and Off Press the On/Zero button to turn power on. The balance performs a segment check. The balance then displays the last selected application mode.
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Ohaus Discovery EN- 3 OPERATION 3.1 Overview of Controls & Display Functions 10 1 2 3 4 5 6 7 8 4 9 TOP VIEW BOTTOM VIEW 11 12 13 REAR VIEW TABLE 3-1. DISCOVERY CONTROL FUNCTIONS. 80104130.
EN- Ohaus Discovery 3.1 Overview of Controls & Display Functions (Cont.) 2 1 3 14 13 12 4 11 10 9 8 7 6 5 Digital Display Window TABLE 3-2. DISCOVERY DISPLAY FUNCTIONS. 80104130.
Ohaus Discovery EN- 3.2 Button Functions Four multifunction buttons and two tare buttons are used to to operate the balance and navigate the menus. The function of each button is shown below. Press and Release Press and Hold Menu Function Primary Function Secondary Function Tare On/Zero Print Function Cal • Performs tare • If balance is off, • Sends the current • Operation is depen- • Initiates calibration operation. turns balance on.
EN-10 Ohaus Discovery 3.3 Using the Button Control Functions 3.3.1 Setting the Balance to Zero Remove the load from the pan and press the Zero button to set the display to zero. When the weighing pan is empty, the Center of Zero indicator turns on when the measurement is within + 1/4 division (d) of the zero setting. 3.3.2 Taring Taring refers to the action of allowing for the weight of a container so that only the weight of objects held in the container (net weight) is displayed.
Ohaus Discovery EN-11 3.4 MENU 3.4.1 Menu Structure The Discovery balance menu structure is illustrated below. CALIBRATE (3.7.2) SETUP (3.7.3) READOUT (3.7.4) AutoCal Legal Trade Auto Zero Span Auto Tare Filter Calibration Test (Cal Test) Auto Off Gross Ind. Calibration Adjust (Cal Adj) End Setup End Read End Cal MODE (3.7.5) UNIT (3.7.6) PRINT (3.7.
EN-12 Ohaus Discovery 3.4.2 Menu Navigation The Discovery menu structure consists of three levels. The top level is the main menu which consists of a number of sub-menus. TOP LEVEL Enter CALIBRATE SETUP READOUT MODE END LOCKOUT RESET GLP PRINT SECOND LEVEL Typical Sub-Menu The second level of the menu structure is the sub-menu PRINT GLP DATA RS232 END RS232 BAUD HANDSHAKE level.
Ohaus Discovery EN-13 3.5 Application Modes The Discovery balance incorporates Weighing, Parts Counting, Percent Weighing, Check Weighing, Animal/Dynamic Weighing, Gross/Net/tare Weighing, Totalize, High Point, Density, Statistics and Pipette application modes. The default setting has the weighing mode turned on and all other application modes turned off. Note: Before using any application modes, they must be turned on in the Mode menu (See Section 3.7.5). 3.5.
EN-14 Ohaus Discovery 3.5.2 Parts Counting (Cont.) Pressing the Function button displays the APW on the secondary display. The example shows an APW of 2.000g. Press the Function button again to return to Parts Counting Mode. To establish a new APW from Count Mode, press Mode until COUNT appears. Press No to increment, Back to decrement, Exit to leave without saving and press Yes to accept. APW Optimization The only adjustment for Parts Counting is APW Optimization.
Ohaus Discovery EN-15 3.5.4 Check Weighing Check Weighing is used to compare the weight of a sample against target limits. Press and hold Mode button MODE CHECK is displayed, then release the button. To Establish Check Weighing Parameters CHECK is displayed with CHG PARAM? (blinking). Press the No button to use the stored limits and begin Check Weighing, or press Yes to set Check Weighing limits. Setting Under and Over Lmits The primary display shows UNDER or OVER indicating which limit is being entered.
EN-16 Ohaus Discovery 3.5.5 Dynamic/Animal Weighing (Cont.) Automatic Mode Place subject on the pan, the balance will automatically start a countdown. At the end of the countdown period, the subject weight is displayed. The balance returns to the ready condition when the animal is removed from the pan. If the Function button is pressed before the animal is removed from the pan, the primary display shows the actual weight and the secondary display shows CLEAR PAN until the animal is removed from the pan.
Ohaus Discovery EN-17 3.5.7 Totalize Totalize measures the cumulative weight of items. Refer to Section 3.7.5 to enable totalizing. Press the Mode button, then release when MODE TOTALIZE is displayed. The primary display shows the current weight. To Establish Totalize Parameters The primary display shows TOTAL and the secondary display shows CHG PARAM? (blinking). At this point you can select either a manual or automatic mode. Press the Yes button.
EN-18 3.5.9 Ohaus Discovery Density Refer to section 3.7.5 to enable density measurements. Follow the procedures as indicated after initial setup in Section 3.7.5. Read the information concerning density measurements after the procedure which references an Ohaus Kit used specifically for density measurements. Four methods of density determinations can be made with the Discovery balance. These are: 1. Solids more dense than water, 2. Solids less dense than water, 3. Liquid density, 4.
Ohaus Discovery 3.5.9 EN-19 Density (Cont. The density Q is the quotient of the mass m and the volume V. Q =m V Density determinations are performed by using Archimedes’ principle. This principle states that every solid body immersed in a fluid loses weight by an amount equal to that of the fluid it displaces. The density table for water is included in the Discovery balance software.
EN-20 3.5.9 Ohaus Discovery Density (Cont.) Solid Density Determinations for items Less Dense Than Water For density determination of solids with a density less than 1 g/CM3, the bottom of the Weigh Below Hook for solids must be used as it holds the solid body below the surface of the auxiliary liquid. If the buoyancy of the solid is greater than the weight of the Weigh Below Hook, the Weigh Below Hook must be weighted by placing an additional mass on the submerged part of the Weigh Below Hook as shown.
Ohaus Discovery 3.5.9 EN-21 Density (Cont.) Liquid Density Determinations The density of a liquid can be made using a sinker of known volume.
EN-22 3.5.9 Ohaus Discovery Density (Cont. Before density measurements can be made, the density mode of operation must be set up in the Menu, Mode Sub-menu. It is in the Mode Sub-menu where solid, porous, water or auxiliary liquids are selected. After the basic parameters have been set, the balance density operation is further determined in the APPL DENSITY menu. This menu allows the setting of Density, Temperature, Dry Weight of Porous Material, Sinker Volume and Density of Oil.
Ohaus Discovery 3.5.9 EN-23 Density (Cont. C. Liquid Density using Calibrated Sinker (Not supplied) The following menu item should be turned on: LIQUID. Press and hold the Mode button until MODE DENSITY is displayed, then release the button. DENSITY CHG PARAM? is displayed. Press the Yes button VOLUME 00.000000 is displayed. Enter the volume of the sinker, use the Yes, No and Back buttons. The balance indicates 0.0000g IN AIR (blinking). Place the sinker on the pan and press the Function button.
EN-24 3.5.9 Ohaus Discovery Density (Cont. D. Density of Solid using Auxilary Liquid (Cont.) The balance now indicates 0.0000 g IN AIR (blinking). Place the sample on the support and weigh in air, press the Function button. Carefully submerge the sample in the auxiliary liquid (in liquid) using the kit and press the Function button. The balance displays the result in grams per cubic centimeter (g/cc).
Ohaus Discovery EN-25 3.5.10 Statistics Statistics are used when it is desired to compare a number of samples and examine the relative deviation of the samples along with other statistical data. A minimum of three samples is required in this program. When a printer or computer is connected to the balance, all statistical information can be observed and printed. Weighing, Animal Weighing and Check Weighing are the functions for providing Statistical Data. Statistical Weighing Refer to paragraph 3.7.
EN-26 Ohaus Discovery 3.5.10 Statistics (Cont.) Statistical Check Weighing Press and hold Mode button until STATS is shown on the secondary display. For statistical Check Weighing, use the same general procedure as in Statistical Weighing. UNDER 00.0000 g is displayed. Using the No button to increment and the Back button to decrement and the Yes button to accept and advance to the next digit, proceed to enter the under value for samples. Press the Yes button to accept. The display changes to OVER 00.
Ohaus Discovery EN-27 3.5.10 Statistics (Cont.) Statistical Animal Weighing This procedure is very similiar in setup as Statistical weighing. Use the same general procedure. Press and hold Mode button until STATS is shown on the secondary display. STATS CHG PARAM? (blinking) is displayed. Press the Yes button, SAMPLE SIZE 5 is displayed. Pressing the No button increments the sample size, Back button decrements the sample size. Pressing the Yes button accepts the digit and advances to the next digit.
EN-28 Ohaus Discovery 3.5.11 Pipette Calibration Pipette calibration checks the accuracy and precision values of pipettes by weight analysis. The balance is capable of recording data of each pipette tested. The density table for water is included. If other liquids are used for pipette calibration, you must enter the liquid’s density in g/cc at current room temperature. Since all calculations are made within the balance, it is also required that you know the atmospheric pressure.
Ohaus Discovery EN-29 3.5.11 Pipette Calibration (Cont.) IMPREC % 0.000000 is displayed. Edit the value and press the Yes button. This value is specified on the Pipette. The example used was 5.000000 %. Press the Yes button to accept. SAMPLE SIZE 10 is displayed. Using the Yes, No and Back buttons, change the sample size. The example shown uses 5 samples. When sample size is entered, press the Yes button. The balance is now ready to accept samples.
EN-30 Ohaus Discovery 3.6 Additional Features 3.6.1 Weigh Below The Discovery balance is equipped with a weigh below hook. Note: Before turning the balance over, remove the pan, wind shield and shield to prevent damage to the glass doors. Weigh Below Protective Cover To use this feature, remove power Weigh Below Hook from the balance and remove the protective cover for the weigh below opening as shown. Install the Table Support weigh below hook.
Ohaus Discovery EN-31 3.7.2 Calibration Discovery balances offer a choice of 4 calibration methods: Internal Calibration (Advanced AutoCal), Span Calibration, Calibration Test and Calibration Adjust. • Advanced AutoCal - Two internal masses are used for linearization of calibration by using three weight values: zero, a weight value at midpoint of the balance’s weighing range, and a weight value at or near the balance’s specified capacity.
EN-32 Ohaus Discovery 3.7.2 Calibration (Cont.) Automatic Internal Calibration Before Automatic Internal calaibration can be used, it must be turned on first in Menu Calibrate. With the balance on, press and hold the Cal button until MENU CALIBRATE is displayed, then release the Cal button, CALIBRATE is (blinking). Press the Yes button to enter calibration, CAL AUTO CAL is displayed. Press the Yes button to select Autocal. After pressing the Yes button, AUTOCAL SET OFF is displayed.
Ohaus Discovery EN-33 3.7.2 Calibration (Cont.) Calibration Test Calibration test allows a check of a known calibration mass against the last stored calibration information in the balance. Press and hold the Cal button until MENU CALIBRATE is displayed. Press Yes to enter calibration. Press No until CAL TEST is displayed. Press Yes and follow the screen instructions. Place the specified weight on the pan.
EN-34 Ohaus Discovery 3.7.2 Calibration (Cont.) Calibration Adjust Calibration Adjust may be used to adjust the result of the internal calibration by ±100 divisions. Note: Before making a calibration adjustment, perform an internal calibration. To verify whether an adjustment is needed, place a test mass on the pan and note the difference (in divisions) between the nominal mass value and the actual reading.
Ohaus Discovery EN-35 3.7.3 Setup SETUP Legal Trade On/Off Gross Ind. Allows setting the gross indicator to G (gross), B (brutto) or Off. Auto Tare On/Off Auto Off Off, 1, 2, 5 min End Read Back Light On/Off Press the Yes button to advance to the Mode sub-menu. Press No to End Setup return to Auto Zero. Legal Trade When set On, the balance operates in compliance with Weights and Measures regulations. 3.7.5 Mode The Mode sub-menu is used to turn Application modes On or Off.
EN-36 Count Use to set the Counting Mode On or Off. If Count is set On, APW optimize can be set On or Off. Ohaus Discovery 3.7.6 Unit The Unit sub-menu is used to turn measuring units On or Off. UNIT Percent mg On/Off Allows setting the percent weighing mode On or Off. g On/Off ct On/Off Check Weigh oz On/Off Use to set the Check Weighing Mode On or Off. ozt On/Off GN On/Off Animal dwt On/Off Use to set the Animal Weighing Mode to: Auto, Semi, Manual or Off.
Ohaus Discovery EN-37 LSD Result Content .5 Adds one decimal place All of these features can be set On or Off. Numeric data only, Header, Display counts by 5 Gross, Net, Tare, Reference, Result, GLP. (See sample printout 3.10). 1 Display counts by 1 2 Display counts by 2 Layout 5 Display counts by 5 Determines the format of data output to a printer or computer. If Line 10 Display counts by 10 Format is set to Multi, a multi-line printout is generated.
EN-38 Ohaus Discovery Entering a User ID or Project ID Enter the user or Project ID one character at a time. The character to 3.7.11 Reset be entered is highlighted by a blinking cursor (underscore).
Ohaus Discovery EN-39 3.7.12 Lockout Use this sub-menu to prevent unauthorized changes to menu set- Reset tings. If a sub-menu is locked, its menu item settings can be viewed Set On to lock the Reset Menu. but not changed. Lockset LOCKOUT Set On to lock the menu settings in Lockout. Cal On/Off Setup On/Off End Lockout Readout On/Off Press the Yes button to advance to the End menu. Press the No button Mode On/Off to return to the Cal menu. Unit On/Off Print On/Off 3.
EN-40 Ohaus Discovery 3.8 Sealing Access to the Balance Settings When used in conjunction with the Lockout menu, the balance may be sealed to prevent or detect unauthorized changes to the balance settings. For legal for trade applications, the balance must be sealed to prevent access to the metrological parameters. To seal the balance, cover the Lock switch access hole at the rear of the balance. A paper seal may be installed as shown.
Ohaus Discovery EN-41 4. MAINTENANCE 4.1 Calibration Periodically verify calibration by placing an accurate weight on the balance and if calibration is required, refer to section 3.7.2. 4.2 Cleaning If cleaning is required, use a soft cloth dampened with water and a mild detergent. Do not allow liquids to enter the balance. Do not use harsh chemicals to clean the balance, as the finish may be damaged. 4.3 Troubleshooting The following table lists common problems, possible causes and remedies.
EN-42 Ohaus Discovery 4.4 Service Information If the Troubleshooting section does not resolve or describe your problem, contact your authorized Ohaus Service Agent. For Service assistance or technical support in the United States, call toll-free 1-800-672-7722 between 8:00 AM and 5:00 PM EST. An Ohaus product service specialist will be available to provide assistance. Outside the USA, please visit our web site, www.ohaus.com to locate the office nearest you. 4.
Ohaus Discovery 5. EN-43 TECHNICAL DATA Ambient conditions The technical data are valid under the following ambient conditions: • Ambient temperature: 10 °C to 40 °C • Relative humidity: Max.
EN-44 Ohaus Discovery 5.2 Specifications Model Capacity DV114C DV214C DV314C DV215CD 110 210 310 81/210 Readabilty (mg) Repeatabilty (Std. dev) (mg) Linearity (mg) Weighing Units Application Modes 0.1 0.01/0.1 0.1 0.2 0.02/0.1 +0.2 +0.5 +0.03/0.
Ohaus Discovery EN-45 5.3 Capacity x Readability Unit DV114C DV214C DV314C DV215CD milligram 110000.0000 x 0.1 210000.0000 x 0.1 310000.0000 x 0.1 81000.000 x 0.01 gram 110 x 0.0001 210 x 0.0001 310 x 0.0001 81.000000 x 0.00001 ounce 3.8801356 x 0.000005 7.4075316 x 0.000005 10.9349276 x 0.000005 2.857191 x 0.0000005 carat 550.000000 x 0.0005 1050 x 0.0005 1550 x 0.0005 405.000000 x 0.00005 pennyweight 70.731639 x 0.0001 135.033129 x 0.0001 199.334619 x 0.0001 52.084207 x 0.
EN-46 Ohaus Discovery 5.4.1 Commands (Cont.) Command Function x% Set % reference weight (x) in grams. (Must have reference weight stored.) P% Print percent reference weight. xAW Set Animal Weigh Level to x. (x = 1 (Low), 2 (Medium), 3 (High) PAW Print Animal Weigh Level. BAW Begin Animal cycle. (Manual Mode) CW Clear locked weight (weight < threshold) in Manual and Semi-Auto modes. xCO Set Checkweighing Over Limit in grams.
Ohaus Discovery EN-47 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 19A Chapin Road P.O. Box 2033 Pine Brook, NJ 07058, USA Tel: (973) 377-9000 Fax: (973) 944-7177 With offices worldwide www.ohaus.com © Ohaus Corporation 2006, all rights reserved *80104130* P/N 80104130 A Printed in Switzerland 80104130.
