Summary of Contents for Lutron Electronics GM-300P
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300 g x 0.01 g DIGITAL BALANCE Model : GM-300P Your purchase of this DIGITAL BALANCE marks a step forward for you into the field of precision measurement. Although this DIGITAL BALANCE is a complex and delicate instrument, its durable structure developed.
1. FEATURES * Microprocessor circuit with high accuracy & better performance. * 0.01 g & 0.0005 oz resolution & wide measuring capacity. * Large LCD display, 20.9 mm ( 0.8" ) digit size, easy read out. * Built-in gram & oz display unit, select by the internal slide switch.
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Accuracy ( 0.05 % + 0.04 g ) * Within two hours after self calibration be executed. 23± 5 ℃ * Spec. tested under the environment RF Field Strength less than 3 V/M & frequency less than the 30 MHz only. Sampling time Approx.
3-1 Platform 3-2 Level Bubble 3-3 CAL. Button ( function A Button ) 3-4 Tare Button ( function B Button ) 3-5 Display 3-6 Power Switch 3-7 Rubber Pads 3-8 Battery Cover/Compartment 3-9 DC 9V Receptacle 3-10 RS232 Output Socket 3-11 Unit Switch 4.
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5. MEASURING PROCEDURE As intend to let the balance under the best operation condition, it recommend to warm up the balance at least 30 minutes before make the operation. 1) Place the balance on a flat hard surface. Adjust the " Rubber Pad " ( 3-7, Fig. 1 ) until the water bubble of the "...
Consideration of tare function If the display show minus weight or show "_ _ _ _ _ " means the display reading is under the zero, then tare function should be executed. Before measuring the weight, If the display is not zero &...
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Step 3 : Press the " CAL. Button " ( 3-3, Fig. 1 ) once again, display value of " 200.00 g " will flash 6 times, then the calibration procedures are finished completely & balance is ready for the measurement accurately. 3) Calibration under the 100 gram standard weight a) Power on the scale until the display show zero value.
7. COUNTING SCALE OPERATION PROCEDURE 1) Prepare a lot of counting sample units. The no. of counting sample will be 10 PCs, 20 PCs, 50 PCs or 100 PCs. The more PCs of counting sample will be better. * No load to put on the platform. 2) Use the finger to hold the "...
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Change to the new counting sample units Under the counting version if intend to change the counting sample units, the new procedures are following : a. Take away any load from the platform. b. Push the " function A Button " ( 3-3, Fig. 1 ) once a while.
8. BATTERY REPLACEMENT If battery is weak, LCD display will show " LO " indicator. Every 1 second the " LO " indicator will flash one time. This reminds user to replace new battery. 1) Open " Battery Cover " ( 3-8, Fig. 1 ) located at the bottom of the scale.
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An RS232 lead with the following connection will be required to link the instrument with the PC serial input. Scale (3.5 mm jack plug) (9W 'D" Connector) Center Pin........Pin 4 Ground/shield........Pin 2 2.2 K resistor Pin 5 The 16 digit data stream will be displayed in the following format : D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Each digit indicate the following status :...
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