SCIENTECH® High Capacity Series Electronic Balance Setup and Operating Procedures PN11764A
Thank you for choosing a Scientech High Capacity Electronic Balance. Scientech, an ISO9001:2000 registered company, and its employees are pleased to provide you with a balance designed and manufactured for years of reliable service. The attractive quality of Scientech balances has been demonstrated by being certified to carry the “CE” mark of conformity. Please read this manual completely before using your balance.
Unpacking and Setup: The top weighing pan, remote power supply, instruction manual and any optional accessories are packed in a cardboard box that is located on top of the balance. The balance is suspended in a separate support to protect it from shock during shipping and handling. Save and reuse all packing material for future damage-free shipments. Figure 1 – Exploded view Choose the Proper Environment: The environment in which your balance is used is very important.
Level the Balance: The balance has one fixed foot and three adjustable feet which are used to level the balance by centering the bubble in the level indicator. Refer to figure 2. The level indicator is located on the back of the balance. Make sure the fixed foot is pressed down against the bench top and use the three adjustable feet to level the balance.
Good Measurement Practices: (As quoted from the Mass Standards Handbook by Troemner, 3-015BKT rev 1/03) There are numerous steps that one can take in order to improve the quality of a mass measurement system. However, they usually fall within three main categories: the equipment, the environment, and the operator. If even one of these areas is neglected, it can have a dramatic negative impact on your results.
Front Panel Controls: Figure 5 – Balance front panel Audible Beep: Each time any of the front panel buttons is activated the balance returns an audible “beep”. The ON/OFF Button: When the balance is in Stand By mode, pressing the ON/OFF button will start the turn on sequence shown in Figure 4. When the balance is on, pressing the ON/OFF button will place the balance in Stand By mode, with only a single dot in the lower right hand corner of the display.
Balance Functions and Features: Autocalibration – To Calibrate the Balance to an External Weight: This procedure calibrates your balance to an external calibration weight. Note: Note: Note: For correct calibration weight refer to specification chart in the back of the manual. 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.
PCount - Front Panel Parts Counting: Front panel parts counting is a standard feature of the High Capacity Series balances. However, if an optional specific gravity determination function (SHCSG) is purchased it is installed in place of the front panel parts counting function. High Capacity Series balances can have either front panel parts counting or specific gravity determination, but not both. User Action Balance Response 1 Remove any weighing samples or containers from Zeros are displayed.
PC-Prtr – Computer and Printer Interface Function: This function is used to set the format of the data sent through the balance’s RS-232 port when the PRINT button is pressed or when a print command is issue by an attached computer. • Repeatedly press the MENU button until PC-Prtr is displayed. • Press the PRINT button to select this function. • Press the MENU button repeatedly to scroll through the available options.
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. Divide the displayed weight in grams by the increased volume of water. The result is the mass per unit volume of the solid in g/cc.
Specific Gravity Determination Without the Optional SCHSG Program: 1. 2. 3. 4. 5. Install a below balance weighing apparatus, such as a wire hook, including a pan suspended in a bowl of water. Insure that the pan and the hanger do not touch any part of the bowl and all are totally submerged. Then tare the balance. Place the sample to be tested on the balance pan and record the weight reading shown on the display. You may use any unit of measure you desire.
RS-232 Command Set from a Computer: With the exception of the Alternative Calibration function described on page 7, all balance functions available through the balance’s front panel are also available through RS-232. The command set is shown below.
Specifications for SHC High Capacity Balances: Model SHC 12 SHC 16 SHC 20 SHC 30 Weighing Mode Single Range Capacity 12 Kg 16 Kg 20 Kg 30 Kg Readability 0.1 gram Tare Range 0-12 Kg 0-16 Kg 0-20 Kg 0-30 Kg Repeatability 0.2 g standard deviation (Standard Deviation) Linearity ± 0.2 g ± 0.3 g Stabilization Time ~3 Seconds Units of weight grams, carats, ounces, pounds, pennyweights, troy ounces, grains, Hong Kong taels, Singapore taels, R.O.C.
Limited Warranty: All Scientech High Capacity Series Electronic Balances and their accessories are warranted against defects in materials and workmanship two (2) years from the date of delivery. During the warranty period, Scientech will repair, or at its option replace at no charge, components that prove to be defective. The equipment must be returned, shipping prepaid, to Scientech's product service facility.
Notes: 15
Quick Setup Guide: 1 UNPACK BALANCE 3 LEVEL BALANCE Adjust 3 adjustable feet to level the balance by centering the LEVEL INDICATOR. 5 TURN ON BALANCE Press the ON/OFF switch and make sure the balance goes through the following sequence. 6 WARM UP 1 HR, THEN CALIBRATE 2 Calibration instructions in manual.
