Professional Weighing Equipment SCT SERIES Small Counting Scales SMALL COUNTING SCALE WITH CHECK-WEIGHING FUNCTION Operating Manual SCT 600g SCT 1200g 1
Declaration of Conformity Declaration of conformity for apparatus with CE mark: We hereby declare that the product to which this declaration refers conforms to the following standards. Electronic scale: SCT Small Counting Scales Available Models SCT 600g SCT 1200g Mark applied EU Directive 2004/108/EC Standards EN 61326-1: 2006 Date: 14. 11.
Identification Customer Service USA LW Measurements LLC, 3510 Industrial Drive, Unit H Santa Rosa, CA 95403 USA Tel: (707) 542-2185 FAX: (707) 542-3285 EUROPE LW Measurements Europe Ltd Chalkwell Park House 700 London Road Westcliff-on-Sea Essex SS0 9HQ United Kingdom Tel: 01702-476700 Fax: 01702-477380 ASIA LW Measurements PTY Ltd Block 1004, Toa Payoh North #03-16 Singapore 318995 Tel: (65) 6458 3438 HP: (65) 8119 3401 http://lwmeasurements.
Introduction What you should know about these Operating Instructions: Tree® Professional Weighing Equipment products are simple to operate. Nevertheless, you should read through these operating instructions in their entirety, so that you can make optimum use of the full potential and the diverse possibilities of the weighing machine in your daily work.
Contents Section 1 Heading Safety 1.1 Representation and symbols 1.2 Safety recommendations 2 Your weighing machine 2.1 Construction and functions 2.1.1 Construction of the weighing machine 2.1.2 Function setting 2.1.3 Features of the weighing machine 2.2 Application, conformity 2.2.1 Correct use of the weighing machine 2.2.2 Conformity 2.3 Data and parameters 2.3.1 Technical data 3 Getting started with your weighing machine 3.1 3.2 3.3 3.4 3.5 3.6 3.
4 Working with the application menu using the numeric keypad 4.1 Display messages and key functions 4.1.1 Display messages 4.1.2 Key functions 4.1.3 Clearing the total weight 5 Operation 5.1. Tare 5.1.1 Clearing the tare weight 5.1.2 Clearing the previous tare weight 5.2 Sample setting 5.2.1 Number setting 5.2.2 Unit weight setting 5.2.3 Clearing previous Sample setting 5.3 Alarm function 5.4 Unit weight enhancement 5.5 Hi / Lo check weighing with counting 6 Calibration 6.
1 Safety 1.1 Representations and symbols Important instructions, which involve safety, are highlighted with the appropriate mark: 1.2 Safety recommendations When using the weighing equipment in surroundings with increased safety requirements, the corresponding regulations must be observed: The weighing machine may only be used with the power adapter supplied exclusively for use with the weighing machine.
If there should be any reason to believe that it is no longer possible to operate the weighing machine without danger, the weighing machine is to be immediately unplugged from the electricity supply (pull out power adapter) and secured against inadvertent operation. In carrying out maintenance work, it is essential to follow the recommendations in Chapter 6 Maintenance and service. The weighing machine must not be operated in an area subject to explosion risks.
2 Your weighing machine 2.1 Construction and functions 2.1.1 Construction of the weighing machine The weighing machine consists of (1) the weighing machine body and the weighing-pan, (2) the adapter and this operating manual. Figure 2.
2.1.2 Function setting - Turn off the weighing machine using the hard switch located on the bottom of the weighing machine. - Press and hold UNIT WEIGHT key and then turn on the weighing machine. The display will show “------“ and then “b = XX” (beeper), on the first line, A-XX (auto off) on the second line and L = XX (backlight) on the third line. - Press the QTY/SET key to toggle between activating the beeper on or off. - Press the TARE key to select auto off time.
Variable g or lb reference weight calibration software Pieces counting 1.3 million internal resolution 60,000 display resolution 24 bit A/D processor Highest quality sensor used Bottom sensor support and steel thread footing 2.2 Application, conformity 2.2.1 Correct use of the weighing machine The weighing machine may only be used for the weighing of solid-materials and of liquids in secure containers.
2.3 Data and parameters The following applies to all SCT series weighing machines Power supply: . Input: 110 or 230V AC (+/-15-20%); 50 to 60Hz .
2.3.1 Technical data The SCT Series are high-quality electronic precision weighing machines designed to function as counting machines and check-weighers with the following specifications: 1. Complete Specifications Model number Capacity Division Weighing pan Size SCT-600 600 g 0.01g 5.3 x 4.7 in SCT-1200 1200 g 0.02 g 5.3 x 4.
3 Getting started with your weighing machine 3.1 Unpacking the equipment The machine is delivered in an environmentally-friendly carton, specifically developed for this precision instrument, which provides optimum protection for the machine during transportation.
Read through these operating instructions even if you already have prior experience with weighing equipment, before you work with the weighing machine and pay attention to the Safety recommendations (see Chapter 1 .Safety). 3.2 Scope of delivery Inspect delivery for completeness immediately upon unpacking all components. Checklist for complete delivery Component delivered present yes / no Weighing unit body Weighing platter Power adapter Operating manual 3.
3.4 Choice of a suitable location The environment in which your weighing machine is used is very important. Air movement, temperature changes, vibrations, direct sunlight, etc. all influence the performance of high precision weighing machines. Therefore, place your weighing machine on a solid, sturdy surface that is free of air currents, vibration and not in direct sunlight. The surface should not be magnetic and should be located away from doors, windows, heaters, air conditioners and fans.
3.6 Leveling the weighing machine To function properly, the machine must be precisely horizontal. The weighing machine is fitted with one bubble level and adjustable feet for level-control, with the aid of which it is possible to compensate for small height differences and / or any unevenness in the surface on which the machine is positioned. The screw feet must be adjusted so that the air bubble is precisely in the center of the sight glass of the bubble level (see Fig.
3.7 Calibration of the weighing machine Since the Earth’s gravity is not the same everywhere, each weighing machine must be adjusted to compensate for the gravity differences at each location in accordance with the underlying physical weighing principles. This adjustment process is known as calibration and must be carried out on initial installation and after each subsequent relocation.
4 Working with the application menu using the Numeric Key-Pad 4.1 Display messages and key functions 4.1.1 Display messages - WEIGHT DISPLAY indicates the gross or net (when the tare function is activated) weight on the platter. - UNIT WEIGHT DISPLAY indicates the average or set unit piece weight. - TOTAL DISPLAY is the accumulated total pieces on the platter. - ZERO INDICATOR turns on when the machine is in the Zero position.
- TARE INDICATOR turns on when the Tare function is used. - LOW SAMPLE WEIGHT INDICATOR turns on when the sample number is not enough for accurate weighing. The weighing machine will start counting but the error may be high. Press the CE key to clear and start over. - LOW UNIT VALUE INDICATOR turns on when the sample unit is not heavy enough for accurate counting. Operator may still use the weighing machine if this indicator is on, but counting error might occur. 4.1.
- CE KEY is used for cancelling the numeric setting data or to cancel the previous unit weight data. - QTY/SET KEY is used to alternate between normal counting and quantity check operation. - [M+] MEMORY KEY is used to store the count data, and can store up to 99 data sets . 4.1.3 Clearing the total weight - Press the TOTAL key to show the total pieces on the third line of the display. - Press the MC key to show the unit that will be cleared. - Press the CE key to confirm clear. 5 Operation 5.1 Tare 5.1.
- Remove the weight from the platter then press the TARE key so that the TARE indicator will turn off and the WEIGHT display returns to Zero. 5.2 Sample setting (there are two sample setting methods) 5.2.1 Number setting: (when counting any unknown weight) - Place the pre-counted “X” number of samples on the platter. The total weight will be displayed. Set the “X” number of samples by using the numeric keys and then press the SAMPLE/UNIT key.
. 5.2.3 Clearing previous Sample setting - Press CE key to clear previous setting. -Press [CE] again to cancel the previous unit weight and sample setting. 5.3 Alarm function - To avoid counting errors, this weighing machine has a useful alarm function to inform the operator of counting errors in the event of low sample size or low sample weight.
5.4 Unit Weight Enhancement - The weighing machine will automatically adjust and calculate a new average unit weight when more samples are slowly placed on the scale. This ensures higher accuracy as samples are now based on a larger population size. 5.5 Hi / LO check-weighing with counting -The SCT series has a useful check function to inform the operator if the total pieces counted has reached the desired lower limit and/or the upper limit. This function is designed for packaging applications.
6 Calibration - Using an External Calibration Weight: Note: Calibration may be required when the weighing machine is initially installed or if it has been moved a substantial distance. The weighing machine should be allowed to warm up for 10 minutes before calibration. 6.1 Single segment calibration (recommended) Press and hold the ZERO key, and then press the ON/OFF key to turn the weighing machine on.
6.2 Linearity calibration (for scale technician or factory use) Turn on the weighing machine and then turn it off. Press and hold the TARE key and then turn on the machine. The display will show LINE on the first row, CAL-0 (flashing) on the second line and AD value on the third line. When the AD value is stable, press ZERO to calibrate ZERO. After 2 or 3 seconds, the second line will show 200. (ex. SCT 600) Place a 200g weight on the platter and press ZERO when the stable A/D value is displayed.
7 Maintenance and service The weighing machine must be treated carefully and cleaned regularly. It is a precision instrument. For maintenance-work, the weighing machine must be separated from the power supply (remove power adapter plug from the socket). Also ensure that the machine cannot be reconnected to the power supply during the work by a third party. Take care during cleaning that no liquid penetrates into the weighing machine.
8 Transport, storage 8.1 Transportation and shipping of the weighing machine Your weighing machine is a precision instrument. Treat it carefully. Avoid shaking, severe impacts and vibration during the transportation. Take care that there are no marked temperature fluctuations during the transportation and that the weighing machine does not become damp (condensation). 8.
