This Manual is copyrighted by: Scientech, Inc., 5649 Arapahoe Avenue, Boulder, CO 80303 USA. This manual is on-line for reference only to assist you in gaining a better understanding of the features and operations of the Scientech line. The specifications are subject to change. You MUST CONTACT Scientech for permission to print out this manual. If you would like to purchase a Scientech Balance be sure to visit http://www.balances.com/scientech/index.
TABLE OF CONTENTS UNPACKING AND SETUP............................................................................................................................................................3 THE ON/OFF SWITCH .................................................................................................................................................................5 THE ZERO SWITCH........................................................................................................................
Thank you for choosing a Scientech Electronic Balance. Scientech, an ISO9000 registered company, and its employees are pleased to provide you with a balance designed and manufactured for years of reliable service and proudly made in the U.S.A. The attractive quality of Scientech balances has been demonstrated by being certified by TUV to carry the “CE” mark of conformity. Please read this manual completely before using your balance.
All balances are equipped with a special clamping screw that locks the balance suspension during shipping. This screw must be loosened before the balance can be operated (see Figure 2). 1. Locate the black knob, on the front center of the balance, underneath the display area. 2. Remove the paper tag. 3. Turn the knob, in the direction shown below, until resistance is felt.
Figure 4 Front Panel THE ON/OFF SWITCH Press the ON/OFF switch (see Figure 4) and observe the turn on sequence shown in Figure 5. During this sequence the balance is doing an automatic systems checkout to insure it is functioning properly. If your balance was purchased with the optional 9000-INT motorized internal calibration weight, all objects on the stainless steel pan must be removed before turning on the balance using the front panel ON/OFF switch.
RANGE SELECTION (dual range balances only) Pressing the RANGE switch selects low (LO), high (HI) and autorange (HI LO). As a range is selected, it briefly appears at the left of the display. Autorange automatically switches from low range to high range when a weighing exceeds the capacity of the low range. The Floating Tare feature is only available in the LO range (see Floating Tare section for details).
(CAL 1) AUTOCALIBRATION - Using 9000-INT Motorized Internal Calibration Weight NOTE: Dual range models must be placed in HI range before starting the calibration procedure. NOTE: For correct calibration weight refer to specification charts on pages 28-31. The balance should be warmed up for at least one (1) hour prior to calibration and leveled according to the Unpacking and Setup section. Perform autocalibration every time you move your balance.
NOTE: Access to the pieces function, via the front panel, is disallowed if a Data Input Keyboard is functional or bidirectional RS-232 is enabled. RS-232 is enabled by selecting local control (LC) OFF (see RS-232 Front Panel Configuration section for details). Local control ON means the front panel controls the balance. 1. Press the FUNCTION switch (or MODE and RANGE switches simultaneously for dual range models). Display cycles repeatedly through PCS, HI-OK-LO, CAL1, CAL2, T , and CAL 100. 2.
1. Press the FUNCTION switch (or MODE and RANGE switches simultaneously for dual range models). Display cycles repeatedly through PCS, HI-OK-LO, CAL1, CAL2, T , and CAL 100. 2. Press the MODE switch when T appears in the display. T appears in the display and you are now in the time averaging weighing mode. Place a container/cage on the pan. T appears in the display as well as a slowly increasing weight of the 3. container/cage. 4. Press the ZERO switch to zero out the container/cage weight.
The capacity tracker provides a graphic display of the used and unused portions of the weighing range. Each segment represents 5% of the balance's capacity and is illuminated as that portion of the capacity is used. The larger segments, representing 1/4, 1/2, 3/4, and full load, flash as they are approached and then become solid again as they are exceeded.
The below balance weighing apparatus shown previously is ideal for determining specific gravity. Specific gravity is the ratio of the mass of a body to the mass of an equal volume of water. Every mineral has its own specific gravity (SG). A list may be found in any Handbook of Chemistry and Physics. Specific gravity will classify or authenticate a substance. For instance, a diamond’s SG is 3.50-3.53 while quartz’s is 2.65. To determine specific gravity using our balance: 1.
performing an ON/OFF cycle will enable bi-directional RS-232 communication again if the local control (LC) is OFF (see RS-232 Front Panel Configuration). The optional Scientech keyboard provides direct access to a variety of preprogrammed weighing modes incorporated into your Scientech balance. By following the simple instructions and examples, you will find that both complex and routine weighings are easier than ever. This option may be purchased at any time but must be installed at the factory.
Taring (Zeroing and Subtracting) To zero a weight shown in the display, press the Tare key. This is the same as pressing the Zero switch on the balance’s front panel. To preset a tare weight, or to subtract a weight from the display, enter that weight (including the decimal) using the numeric keys and then press Tare. Example: A weighing boat weighs 50.1067 grams. 1. Press 50.1067 , Tare . 2. The negative weight, -50.1067, will appear in the display.
To count the same parts in the future, recall the multiplier and mode for parts counting as follows: 1. Place an empty container on the pan. 2. Press Tare . 3. Place parts to be counted into the container already on the pan. 4. Press M , Recall , Pieces . To return the balance to normal operating mode, press C . Checkweighing / Process Control Limits Although you may do checkweighing using the front panel controls, the keyboard checkweighing is faster and easier.
Selecting Desired Precision of Displayed Weight Reading When weighing in the T mode, the desired precision of the displayed weight reading can be entered into storage register 86. Example: Live mice or rats are to be weighed to a precision of ±0.01 grams. 1. Press .01 , Enter , 86 , Store . 2. The weight of the cage may be subtracted from the display by numerically entering the weight and pressing Tare . 3. Place the caged animal on the weighing pan. 4. Press T , Reset , T .
5. Remove the container and dry the sample. Return the container with the sample to the balance pan and read the percent solids of the sample in the display. To return the balance to normal operating mode, press C . Compounding To compound by weight, the procedure is: 1. Place container on the pan. 2. Press Tare . 3. Add first component to proper weight. 4. Press Tare . 5. Add second component to proper weight. 6. Press Tare . 7. Continue until all components are compounded.
2. Press 400.00 , Conv , Tare . When gold items are placed on the pan, the price will be displayed. To return the balance to normal operating mode, press C . These conversion multipliers can also be stored in any of the storage registers 0 through 49 and recalled when desired. Example: Gold chain is being sold at $40.00 per gram. The wholesaler wants to display first the weight of the gold chain in grams and then the price. 1. Enter $40.00 as a multiplier into storage register 16 by pressing 40.
F. Continue as necessary. When Recall , Send , X is pressed, the printer will print the total weight, min, max, mean, number of samples, standard deviation, and coefficient of variation (coefficient of variation is equal to the standard deviation divided by the mean and is therefore a measure of dispersion). Finally the printer prints a blank line for your signature as well as the time and date.
2. 3. The time/date stamp will remain current until the balance power is interrupted. If power interruption occurs, reset the time and date. To check the time or date registers to see if they are set properly, press 100 , Recall or 101 , Recall on the keyboard. To have the time and date sent, press 0 , Enter , 79 , Store . To stop the time and date being sent, press 1 , Enter , 79 , Store . OPTIONAL RS-232 PRINTERS (Printers must be serial) There are a few different models to choose from.
To enter the RS-232 configuration mode via the front panel, proceed as follows: 1. Turn the balance off using the ON/OFF switch. Display blanks. 2. Hold the SEND switch down while turning the balance on using the ON/OFF switch. OK and the current baud rate, br300, br600, br1200, br2400, br4800, br9600, or br19,200 is displayed. 3. BAUD RATE SELECTION (9600 is default). Press the SEND switch until the desired baud rate is displayed. Then press the ZERO switch.
9. DISPLAY BLANKING SELECTION (bL on is default). “bL on” means that every time data is sent over the RS-232 interface, the display will blink. Press the MODE switch. Press the SEND switch to choose between on or off. Then press the ZERO switch. OK and the current display blanking setting, bL on or bL oFF is displayed. OK SAVEd is displayed followed by OK and the chosen setting. 10. Press the ON/OFF switch. The display blanks 11. Press the ON/OFF switch.
[decimal number]_HI[CR] None Sets the checkweighing high limit register (register 88) to the decimal number entered in the current units. Register 88 is undefined at every ON/OFF cycle. [decimal number]_LO[CR] None Sets the checkweighing low limit register (register 87) to the decimal number entered in the current units. Register 87 is undefined at every ON/OFF cycle.
XAVG[CR] None Accumulates the current weight in the XBAR registers. RESET_XAVG[CR] None Clears the XBAR registers. GLP[CR] Sends GLP header Puts balance in the GLP mode. XAVG[CR] Sends weight while in GLP Accumulates the current weight in the XBAR registers. RCL_XAVG[CR] Sends statistics and signature line Terminates GLP mode. ISO[CR] Sends ISO header and waits for target weight entry Puts balance in ISO mode. xxx.xx_Targ[CR] Sends target weight (g) Enter target weight value in grams.
[register number]_RCL_TARE[CR] REG XXX:[register contents][current units][CR][LF] Adds the specified register contents to the TARE register. RCL_XAVG[CR] [average weight] [current units] AVX[CR][LF]. [2 second delay]. [number of samples taken] ###[CR][LF]. [2 second delay]. [standard deviation] [ current units] SDEV[CR][LF]. [2 second delay]. [relative standard deviation] COV[CR][LF]. Sends the results of a standard deviation run.
RS-232 BALANCE MESSAGE FORMATS The balance will respond to a SEND command by transmitting a message in one of three formats depending on how the SEND command was issued. The following discussion defines five types of SEND commands and the three message formats. 1. The first case typically applies to a balance with RS-232 connected to a printer and an external print switch.
Message is _ _ _ 0.00_ _ _G_SIGMA_ _TBAR_ CR LF Format B: Balance in normal weighing mode 1 X 2 X 3 X 4 X 5 X 6 X 7 X 8 _ 9 _ 10 _ 11 Y 12 Y 13 Y 14 _ 15 _ 16 Y 17 Y ...CR LF Display shows 5.15 g and balance in high range Message is _ _ _5.
TROUBLESHOOTING GUIDE NOTE: Many problems such as the balance remaining in the turn on sequence, "weird" characters on the display or "garbage" on the display are caused by connecting the power supply to the balance incorrectly. The proper procedure is to connect the round DIN connector on the power supply cable to the balance then plug the power supply into the wall outlet.
ENVIRONMENTAL REQUIREMENTS This product is intended for indoor use at altitudes up to 2000 meters, Pollution Degree 1 or 2 in accordance with IEC 664 and transient overvoltages according to Installation Categories (Overvoltage Categories) I, II and III. For mains supply, the minimum and normal category is II. SPECIFICATIONS SA SERIES ANALYTICAL BALANCES Model Weighing Mode Capacity SA 80 SA 120 80g 120g Readability SA 210 SA 310 Single Range 210g SA 410 SA 510 310g 410g 510g .
SPECIFICATIONS SP SERIES PRECISION BALANCES Model Weighing Mode Capacity SP150 SP250 150g 250g Readability Tare Range Windscreen Calibration Weight Housing (WxDxH) Weight SP1000 SP1500 500g 1000g 1500g 0-500g 0-1000g 0-1500g 350g 0.001g 0-150g Repeatability (Standard Deviation) Linearity Stabilization Time Weighing Speed Display Update Interval Data Interface Pan Size Operating Temperature Relative Humidity Power Supply SP350 SP500 Single Range 0-250g 0-350g 0.001g ±0.
SPECIFICATIONS SL SERIES LABORATORY BALANCES Model Weighing Mode Capacity SL400 SL600 SL1000 SL2000 Single Range SL3000 SL5000 SL6000 400g 600g 1000g 2000g 3000g 5000g 6000g 0-3000g 0-5000g 0-6000g Readability Tare Range 0.
SPECIFICATIONS SG SERIES GENERAL BALANCES SE SERIES GEM BALANCES Model SG3000 SG5000 SG8000 SG12000 SE250 SE2500 Weighing Mode Single Range Capacity 3000g 5000g 8000g 12000g 250g 2500g Readability 0.1g 0.001g 0.01g Tare Range 0-3000g 0-5000g 0-8000g 0-12000g 0-250g 0-2500g Repeatability 0.1g 0.001g 0.01g (Standard Deviation) Linearity ±0.15g ± 0.0015g ± 0.015g Stabilization Time ~ 3 seconds Weighing Speed Adaptive Display Update 300 ms Interval Data Interface RS-232 bidirectional interface standard.
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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. The 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.
