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American Weigh Scales AL-201S Instruction Manual

Al-series analytical balances
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AL-Series
American
Weigh
Analytical Balances
Scales, Inc.
INSTRUCTION
MANUAL
AL-311
AL-201S
©2008 American Weigh Scales, Inc.

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Summary of Contents for American Weigh Scales AL-201S

  • Page 1 AL-Series American Weigh Analytical Balances Scales, Inc. INSTRUCTION MANUAL AL-311 AL-201S ©2008 American Weigh Scales, Inc.
  • Page 2 AL-Series Manual Instrument Type: AL-Series Analytical Balances The undersigned hereby declare, on behalf of American Weigh Scales, Inc. of Charleston, South Carolina, that the above referenced product, to which this declaration relates, is in conformity with the directives and stan- dards mentioned.

  • Page 3: Table Of Contents

    AL-201S Balance Structure ........

  • Page 4: Introduction

    AL-Series Manual 1. INTRODUCTION This AL-Series balance is an electronic analytical/precision balance which uses the principles of electromagnetic force restoration for high accuracy, and performance. The AL-Series features multiple weighing units, parts counting, percent weighing, and much more. This balance is also equipped with an RS232 data port for connection to a computer or printer.

  • Page 5: Al-201S Balance Structure

    AL-Series Manual 1.3. AL-201S Balance Structure 3-10 Figure 1.3 Leveling Foot Weighing Pan Cal Button Slide Door Handle Draft Shield Mode Button 3-10 Bubble Level Tare Button Weight Display On / Off Button...

  • Page 6: Al-311 Balance Structure

    AL-Series Manual 1.4. AL-311 Balance Structure 4-12 4-11 4-10 Figure 1.4 Slide Door Handle Weight Display Mode Button Weighing Pan Draft Shield Cal Button 4-10 Leveling Foot Tare Button 4-11 Unit Button Bubble Level On / Off Button Print Button 4-12...

  • Page 7: Technical Specifications

    AL-Series Manual 1.5. Technical Specifications Model AL-201S AL-311 Accuracy Class Weighing Capacity (Max) 200g 300g Actual Scale Interval (d) 0.1mg 0.001g Verification Scale Interval (e) Repeatability ±1d ±1d Linearity ±2d ±2d Calibration Weight 200g Response Time 3~5 sec. Pan Size Ø3.5in / Ø90mm...

  • Page 8: Installation

    1. Connect the power cord to an available wall socket and then into the balance Note: For the AL-201S model there is just an AC mains plug, no external adapter. 2. Press the ON / OFF key to turn the display on. A self-test will be performed (30 seconds), including a display test.

  • Page 9: Operation

    AL-Series Manual The function of the balance and its usage 3. OPERATION Section three --The function of the balance and its usage 3.1. Menu Function Tree 1 Many function of this sort of electronic balance is realized through menu. The following content provides tree-like function menu, as the figure shows: TARE ZERO...

  • Page 10: Operating The Balance

    1. Press the MODE key until the display shows “pcs” to indicate parts counting mode. 2. Add a reference sample of pieces to the platform (or container). On the AL-201S, you should use 10 pieces. On the AL-311 You may select between a reference sample of 10, 20, 50, or 100 pcs using the UNIT key.

  • Page 11: Printing

    This balance is configured to transmit weight data to a computer or printer via the RS232 port. To print the weight data to the RS232 port on the AL-201S, tap the MODE key. For the AL-311, press the PRINT key. You can also set the balance to continuously send the weight data, without having to press the PRINT key.

  • Page 12: Entering Configuration Codes

    4.To exit configuration, choose 0 as the first variable (x). 4.2. Configuration Codes *Defaults are in grey Setting Options Fastest (use in highly stable conditions) Filter Intensity Faster (affects weight update Fast speed) Slow (use for unstable conditions) 0.25d 0.5d Ambient Conditions Stability Range (AL-201S: d=0.1mg) (AL-311: d=1mg)

  • Page 13: Configuration Suggestions & Tips

    AL-Series Manual Setting Options Display all decimal places Do not display the last decimal place Display Display the last decimal place only when stable Display all decimal places only when stable Allow taring regardless of stability Tare Only allow taring when stable Auto-Zero ON Auto-Zero Auto-Zero OFF...

  • Page 14: Appendix

    AL-Series Manual 5. APPENDIX 5.1. RS232 Serial Data Communication T8051 MCU (Intel) 1 start bit 1 stop bit 7-bit ASCII (D6-D0) 1 parity (D7) First setting <RS232 output> <Baud> <Parity> ± Null Weight Display Null Units 5.2. Care & Maintenance Please read all operating instructions carefully before use.
  • Page 15 AL-Series Manual Problem: The display shows “H” during weighing Solution: 1. Weight is too heavy. Decrease the sample weight. 2. No Grounding. 3.The balance may be calibrated incorrectly (using weight lighter than the standard).Try recalibrating. Problem: The display shows “L” during weighing Solution: 1.
  • Page 16 (See Section 4) Problem: The display continues to show zero when weighing small amounts close to zero (ie. 0.3mg-1mg for AL-201S) Solution: 1. The Auto-zero function is turned on. Turn it off in the scale’s configuration. (See Section 4)

This manual is also suitable for:

Al-311

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