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The control software includes the following functions: Moisture Range Time Constant(data averaging) Alarm range Moisture level Absorbance level Zero Calibration Calibration curve preparation (with Automatic linear or non-linear calculations) Hold and Preset(Standby mode) New OMM Unit(sensor) registration Adjustment of analog current output. Specifications: Range 0.1~40%, 40~90% Time Constant 1~99 second (Moving average time) Measuring Time Less than 200mS Target Area 50mm square (at 400mm height) Measurable Sample Types: Instant coffee, Tobacco, Flour, Coke, Clay, Paper, Woodboard, etc., The accuracy increases with smaller and more uniform particle. Output for control and display 4~20mA,Alarm contact (high & low) For PC interface: RS485 with RS232 converter. Environment control Dust eliminator, Air-purge hood, with water cooling System (when environmental temp is over 40C) Maintenance: Lamp Life time 30,000 Hours Motor Life time 20,000 Hours Electric Power AC100~240V automatic setting, 70VA Accuracy: The accuracy depends on the condition of the sample. These conditions include conveyer speed, height of sample, heat and humidity. Roughly, the accuracy could be 0.1% to 0.5% between 0% to 10% and 0.1% to 1% between 10% to 30%. The repeatability is within 0.005 at Zero plate insertion. Generally, the calibration equation is shown Y=a+bX (Y is moisture %, X is absorbance). When the b is less than 50 (typical value of many samples), the repeatability of moisture is less 0.25%. The calibration of the system with known standards is critical to obtaining accurate results. Up to 10 calibration curves can be stored in memory. |
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