ScienTECH Electronic Balance Setup And Operating Procedures
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ScienTECH Electronic Balance Setup And Operating Procedures

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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.html
Precision Weighing Balances at 800-881-9570
SCIENTECH
Electronic Balance
Setup and
Operating
Procedures
or call
®

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Summary of Contents for ScienTECH Electronic Balance

  • Page 1: Operating Procedures

    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.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS UNPACKING AND SETUP................................3 THE ON/OFF SWITCH .................................5 THE ZERO SWITCH..................................5 UNIT OF WEIGHT SELECTION ..............................5 THE SEND SWITCH..................................5 RANGE SELECTION (DUAL RANGE BALANCES ONLY)......................6 THE FUNCTION SWITCH ................................6 (CAL 1) AUTOCALIBRATION - USING AN EXTERNAL CALIBRATION WEIGHT................6 (CAL 1) AUTOCALIBRATION - USING 9000-INT MOTORIZED INTERNAL CALIBRATION WEIGHT ...........7 (PCS) FRONT PANEL PARTS COUNTING...........................7 (HI-OK-LO) CHECKWEIGHING / PROCESS CONTROL LIMITS ....................8...

  • Page 3: Unpacking And Setup

    U.S.A. The attractive quality of Scientech balances has been demonstrated by being certified by TUV to carry the “CE” mark of conformity.
  • Page 4 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). Locate the black knob, on the front center of the balance, underneath the display area. Remove the paper tag.

  • Page 5: The On/Off Switch

    NOTE: Scientech balances are DTE (computer) devices. If communicating to another DTE device (ie computer), a special Scientech RS232 cable (PN10697) is required. If you are communicating to a DCE device (printer), a modem cable is required. Scientech offers an optional modem cable (PN10170) for your convenience.

  • Page 6: Range Selection (Dual Range Balances Only)

    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.

  • Page 7: (Cal 1) Autocalibration - Using 9000-Int Motorized Internal Calibration Weight

    (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.

  • Page 8: (Hi-Ok-Lo) Checkweighing / Process Control Limits

    NOTE: Access to the pieces function, via the front panel, is disallowed if a Data Input Keyboard is functional or bi- directional 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. Press the FUNCTION switch (or MODE and Display cycles repeatedly through PCS, HI-OK-LO, CAL1, CAL2, RANGE switches simultaneously for dual...

  • Page 9: (Cal 100) Percent Weighing

    Press the FUNCTION switch (or MODE and Display cycles repeatedly through PCS, HI-OK-LO, CAL1, CAL2, RANGE switches simultaneously for dual and CAL 100. range models). Press the MODE switch when appears in the appears in the display and you are now in the time averaging display.

  • Page 10: Selectable Filters, Stability Indicator, And Send-When-Stable

    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.

  • Page 11: Density Determination

    = 6.50/2.25= 2.89 specific gravity DENSITY DETERMINATION Scientech does not offer a density determination kit nor do you need one to determine density. Density is mass (grams) per unit volume (cubic centimeters). In order to determine density of a solid, place a graduated flask with a known volume of water on the pan of the balance, tare the balance, and then place the solid in the flask of water.
  • Page 12 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. To get started, plug the keyboard connector into the mating connector at the rear of the balance with the power off.
  • Page 13 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.
  • Page 14 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.
  • Page 15 Selecting Desired Precision of Displayed Weight Reading When weighing in the 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.
  • Page 16 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.
  • Page 17 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.
  • Page 18 F. Continue as necessary. When Recall , Send , 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).

  • Page 19: Optional Rs-232 Printers

    (Printers must be serial) There are a few different models to choose from. Please contact Scientech or one of our representatives for more information. A comprehensive manual is included with each printer when purchased. All printers are set for a 9600 baud rate. To change this setting please see the printer manual and the RS-232 Front Panel Configuration section.
  • Page 20 To enter the RS-232 configuration mode via the front panel, proceed as follows: Turn the balance off using the ON/OFF switch. Display blanks. Hold the SEND switch down while turning the OK and the current baud rate, br300, br600, br1200, br2400, br4800, balance on using the ON/OFF switch.

  • Page 21: Using Bi-Directional Communications

    USING BI-DIRECTIONAL COMMUNICATIONS Scientech electronic balances, interfaced to a computer via the RS-232 port, can be controlled by a computer program in the same way an operator would control the balance using a keyboard. Any programming language with access to the RS-232 interface can be used to program this control.
  • Page 22 [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.
  • Page 23 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.
  • Page 24 [register number]_RCL_TARE[CR] REG XXX:[register contents][current Adds the specified register contents to units][CR][LF] the TARE register. RCL_XAVG[CR] [average weight] [current units] Sends the results of a standard deviation AVX[CR][LF]. [2 second delay]. run. The TBAR mode, if in use, is [number of samples taken] temporarily suspended while...

  • Page 25: Rs-232 Balance Message Formats

    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. The first case typically applies to a balance with RS-232 connected to a printer and an external print switch.

  • Page 26: Bi-Directional Rs-232 Error Messages

    Message is _ _ _ 0.00_ _ _G_SIGMA_ _TBAR_ CR LF Format B: Balance in normal weighing mode Y ...CR LF Display shows 5.15 g and balance in high range Message is _ _ _5.15_ _ _G_ _HIGH CR LF Format B: Balance in a special weighing mode Display shows 1250 PCS and balance in low range Message is...

  • Page 27: Troubleshooting Guide

    *Balance not warmed up enough for *Plug in and turn on balance for 1 hour calibration to be performed Err 3 through 14 appears in display *Service is required *Call Scientech's Service Department at (800) 525-0522 or (303)444-1361 or email us at inst@scientech-inc.com.

  • Page 28: Environmental Requirements

    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 SA 80...

  • Page 30: Specifications Sp Series Precision Balances

    SPECIFICATIONS SP SERIES PRECISION BALANCES Model SP150 SP250 SP350 SP500 SP1000 SP1500 SP404D SP510D SP2050D Weighing Mode Single Range Dual Range (Floating Tare™) Capacity 150g 250g 350g 500g 1000g 1500g 100g 500g 400g 500g 2000g Readability 0.001g 0.001g 0.01g Tare Range 0-150g 0-250g 0-350g...

  • Page 31: Specifications Sl Series Laboratory Balances

    SPECIFICATIONS SL SERIES LABORATORY BALANCES Model SL400 SL600 SL1000 SL2000 SL3000 SL5000 SL6000 SL3100D SL5200D Weighing Mode Single Range Dual Range (Floating Tare™) Capacity 400g 600g 1000g 2000g 3000g 5000g 6000g 1000g 2000g 3000g 5000g Readability 0.01g 0.01g 0.1g Tare Range 0-400g 0-600g 0-1000g...

  • Page 32: Specifications Sg Series General Balances

    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...

  • Page 33: Fcc Compliance

    If equipment return is required, please pack the items in the original box and packing material. As an alternate, place equipment in a snug fitting box, then pack that box in a larger box with at least four inches of packing material between the two boxes. Scientech does not assume responsibility for underpacked items.

This manual is also suitable for:

Sl400Sl600Sl1000Sl2000Sl3000Sl5000 ... Show all

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