ZX-50IQ Portable Grain Analyzer with AutoBIAS. User s Manual

Transcription

1 ZX-50IQ Portable Grain Analyzer with AutoBIAS User s Manual Version 4.1 This manual provides you the information needed to operate the ZX-50IQ Portable Grain Analyzer. ZELTEX, INC. 130 Western Maryland Parkway Hagerstown, Maryland USA Phone: Fax: info@zeltex.com Zeltex, Inc. 2016

2 Table of Contents Table of Contents...2 WARNING...3 Introduction...4 Appearance and Part Names...4 Keypad Description...5 Other Parts and Accessories...5 Power...6 Serial printer (Optional)...6 Choosing the Correct Sample Cup...6 AutoBIAS Automatic Bias initialization and Standardization...7 Using the ZX-50IQ...9 Turning on the ZX-50IQ for the First Time...9 Measuring a Sample...9 CM / As-Is...10 Changing Products...11 Adjusting the Calibration...11 Adjusting the Time and Date...12 Automatic/Manual ID Numbers...13 Resetting Automatic ID Number...13 Adjusting Number of Read Cycles...14 Connecting to a Computer...14 Storing Samples and Results...15 Warning and Error Messages...16 General Specifications...18 Glossary...19 Appendix 1: Analyzed Sample Form...20 Appendix 2: Daily AutoBIAS Adjustment Record...21 Appendix 3: Combination Lock for Carrying Case...22 Page 2

3 WARNING THE ZX-50IQ PORTABLE GRAIN ANALYZERS ARE NOT EXPLOSION-PROOF: REASONABLE CARE MUST BE USED IN HANDLING THESE INSTRUMENTS. THE ZX-50IQ IS SUPPLIED WITH A SPECIAL STATIC-FREE CLEANING BRUSH THAT IS TO BE USED WITH ALL SAMPLE CUPS. FAILURE TO USE THIS BRUSH BETWEEN SAMPLES MAY CAUSE BAD READINGS. Page 3

4 Introduction Appearance and Part Names 16mm Cup 24mm Cup (optional) Variable Path-Length Cup (optional) Page 4

5 Keypad Description Key Name MEASURE MENU SELECT CANCEL Description When the Display shows Clear Chamber & Press Measure, remove any samples from the sample chamber and replace the light shield. Press this key to begin the measurement. Press this key to bring up a list of commands or options. This key is used to confirm the current selection. This key cancels current entry in the instrument., These keys cycle through selections or menu items. CM* AS-IS This key toggles the displayed result between a Constant Moisture basis or on an AS-IS basis. Other Parts and Accessories The ZX-50IQ is shipped with the following parts and accessories. Contact Zeltex if you would like to purchase additional accessories. ZX-50IQ 16mm Sample Cup 24mm Sample Cup (optional) Variable Path-Length Cup (optional) A/C Adapter USB Cable 6 Batteries Static Brush AutoBIAS Perma-Sample Calibration Software flash drive Quick Start Manual User s Manual Calibration Manual Carrying Case Optional: Serial printer Printer Paper Page 5

6 Power The ZX-50IQ can be powered by batteries or an A/C Adapter. 1) Battery Installation: Insert six 1.5V AA size alkaline batteries into the battery compartment located on the lower back of the main body. Be sure that the batteries are oriented as indicated in the battery compartment. Note: When you are running the ZX-50IQ on batteries, please make sure that the instrument is shut off when not in use. The batteries will last much longer if the instrument is turned off when sitting idle. 2) A/C Adapter: Connect the A/C adapter cable to the A/C adapter jack located on the right hand side of the instrument (the jack closest to the top of the instrument). Serial printer (Optional) To activate the serial printer follow the steps below. (Follow the instructions included with the printer where needed.) 1) Turn the Printer on. 2) Press the MENU button on the ZX-50IQ. 3) Press the arrow keys ( ) to cycle through the menu until you find "Enable Printer" then press SELECT. 4) Once the ZX-50IQ has found and linked to the Printer it will display "Printer Ready". If the Printer cannot be found or there is an error communicating with it the display will read Unable to Locate". If this happens, turn off the printer and the ZX-50IQ, then turn them both back on and start again at step 2. Choosing the Correct Sample Cup The ZX-50IQ is shipped with one 16mm sample cup, one 24mm sample cup (optional), and one variable path-length sample cup (optional). Extra cups can be purchased from Zeltex at any time. Do not place objects on the sample cup. The cups should not be placed in direct heat or cleaned with harsh chemicals or abrasives. Avoid scratching the windows. Use the chart below to determine which cup is correct for the sample that you are measuring. It is best to contact Zeltex if you are unsure of the type of window to use. Page 6

7 PRODUCT CUP Wheat Standard Black molded cup (16mm) Corn, Soybean Black molded cup w/windows on outside (24mm) Barley, Milo, Sorghum Cup with sliding windows set to 13mm (see next chart) Flax, Mustard, Cup with sliding windows set to 10mm (see next chart) Soymeal Canola, Rapeseed Cup with sliding windows set to 8mm (see next chart) Use the following chart to match the correct windows with the correct width for the variable path-length cup (the cup with sliding windows). Window # A A A A A A A A A A Shaded boxes indicate preferred window combinations. AutoBIAS Automatic Bias initialization and Standardization When you turn the instrument on each day, it will require you to run an AutoBIAS sample in each non-perishable product you use*. The AutoBIAS feature uses the latest NIR technology to prevent the ZX-50IQ from drifting out of calibration. The instrument will prompt, BIAS ADJUST [product]. Press ENTER. The instrument will read the empty chamber, then prompt, Insert Sample. Insert the Perma-Sample of that product provided by Zeltex, then press MEASURE. The screen will prompt, Remove & Turn. DO NOT TURN THE CUP: the perma-sample can only be inserted one way. Just press MEASURE. Remove and replace the sample when prompted; press MEASURE. Remove the sample when prompted and press MEASURE. The instrument will read the empty chamber again. The instrument will decide how many times it needs to read the sample. At this point, it may prompt, READ AGAIN. If it does so, do not insert the sample. Press MEASURE. After it reads the empty chamber again, it will tell you to Insert Sample. Repeat the process. It may ask you to read the sample several times. Do not be alarmed. Simply follow the directions until the screen gives the constituent name and a value. This value is the amount of the bias adjustment for that constituent; write it on the attached Daily AutoBIAS Adjustment Record found in Appendix 2. Press ENTER. The instrument will automatically adjust the bias by the amount shown. The second constituent bias amount will appear. Record it and press ENTER again. Continue until all the constituents have been adjusted. You are now ready to begin reading samples in the adjusted product! Page 7

8 You can elect to run an AutoBIAS at any time, in addition to the daily AutoBIAS prompt. Make sure you are in the product whose bias you want to adjust. Press SELECT ESC. Use the arrow keys ( ) to scroll through the menu until Auto Bias appears on the screen. Press ENTER. * If you are unable to run the AutoBIAS sample for some reason, you can escape the daily AutoBIAS prompt by pressing "-, 0, -". Do not make a habit of ignoring the AutoBIAS prompt. If you have lost the AutoBIAS sample, contact Zeltex for a replacement. Page 8

9 Using the ZX-50IQ A NOTE ON THE TEXT Throughout this manual, keystrokes are represented in bold type; references to messages on the computer screen or the ZX-50IQ display screen are in quotes. Turning on the ZX-50IQ for the First Time It is recommended that you measure ten samples of the product that the instrument has been pre-calibrated for. (These samples must be pre-analyzed by your lab.) Write the analysis in the Analyzed Sample Form provided in Appendix 1 and then use the Statistical Analysis portion of the provided Calibration Software to determine if an adjustment is necessary. If you are unable to use the Calibration Software or are simply uncomfortable with determining when an adjustment is necessary, feel free fax the Analyzed Sample to Zeltex or the predicted values to Zeltex for assistance: FAX: PHONE in the USA: outside the USA: info@zeltex.com Zeltex will give you any necessary adjustments. Measuring a Sample 1) Turn the ZX-50IQ on. Once the test sequence is complete, Measure Standard will be displayed. 2) Select the product according to the sample type to be measured. (See Changing Products) 3) Fill the sample cup with sample and tap the cup twice on a hard surface. 4) Make sure there is nothing in the sample chamber and close the lid over the sample chamber. 5) Press MEASURE. The display will show Reading..., then Insert Sample. This indicates that the instrument has been standardized. The instrument must be standardized prior to making any measurement. Page 9

10 6) Lift the lid from the sample chamber and place the cup containing the sample in the chamber. 7) Replace the lid over the sample in the chamber. This shield must always be used when measuring a sample or a standard; otherwise, the results will be incorrect. 8) Press MEASURE. The display will show Reading..., then Remove & Turn. Remove the sample cup, rotate the cup 180 degrees and replace it in the instrument. Close the lid. 9) Press MEASURE. The display will show Reading..., then Remove & Reload. Remove the sample cup, pour out the sample, and refill the cup with the same sample. 10) Replace the sample cup in the sample chamber and close the lid. 11) Press MEASURE. The display will show Reading..., then Remove & Turn. Remove the sample cup, rotate the cup 180 degrees, and replace it in the. Close the lid. 12) Press MEASURE. The display will show Reading..., then Remove & Press M. Remove the sample. 13) Close the lid over the empty chamber and press MEASURE. 14) The results will be displayed. Use the down arrow key to list the results of each constituent. 15) To measure another sample of the same product, press CANCEL to clear the results. The instrument will return to Measure Standard. Repeat steps At any prompt where you have to either enter a sample or remove a sample and press MEASURE, the instrument will allow you only 50 seconds to do so. If after the elapse of 50 seconds you have not completed the task required, the will flash Time Out! and automatically return to Measure Standard. This feature is designed to prevent readings from becoming stale. Note: The ZX-50IQ has a number of warnings for possible bad readings. See Warning and Error Messages in this manual for details. CM / As-Is When displaying measurement results, the instrument displays the Constant Moisture (CM) calculation first by default. Pressing the CM/AS-IS Button will toggle back and forth between CM and AS-IS. Page 10

11 If you should wish to display the AS-IS results first, simply press the CM/AS-IS button while the display says "Measure Standard". When pressed, the display will say "AS-IS DEFAULT". Any readings taken afterwards will show the AS-IS results first. To view the CM results first again, press the CM/AS-IS button again while the display says "Measure Standard" and the display will say "CM DEFAULT". Changing Products 1) Press PRODUCT. 2) Press the arrow keys ( ) to cycle through the products. The different products will be listed. (The ZX-50IQ is able to store ten products, numbered as 0-9.) 3) Press ENTER when the product to be tested is on the display. Only one product can be selected at a time. Adjusting the Calibration The ZX-50IQ has been carefully calibrated at the factory or at your location; however, sometimes it is necessary to adjust the calibration for a slope and/or bias. 1) Bias Adjustment (shifts all readings up or down the same amount) 2) Slope Adjustment (changes the angle of prediction line to agree with the lab) Before making any adjustments, you must first measure at least 5 samples for which you have laboratory analysis. These samples should also cover the range of the calibration. Once the samples have been measured, use the Statistical Analysis portion of the provided Calibration Software to determine if an adjustment is necessary. Print the Statistical Analysis and note the adjustment that the software recommends. If you are unable to use the Calibration Software or are simply uncomfortable with determining when an adjustment is necessary, feel free to use the Analyzed Sample Form found in Appendix 1 of this manual and contact Zeltex for assistance. Once you have determined the adjustment to be made, follow these instructions for making an adjustment to the ZX-50IQ: 1) Turn on the instrument. 2) After countdown, press MENU, then the or button until the display reads Slope & Bias. 3) The screen will display Enter Prod. #. Enter the number of the product you want to adjust (between 0-9). If you select the wrong product, press CANCEL. Page 11

12 4) The name of the product chosen will be displayed. Enter the number of the constituent you want to adjust (between 1-4). Note: Zeltex uses the following constituent numbering system Con #1 is protein, Con #2 is moisture, and Con #3 is oil. 5) On the screen will appear Bias: 0.0. When adjusting only the Bias: 6) When the screen displays Bias, type in the new Bias (No slope) number from the prediction printout using the number keypad. Be careful of negative signs and decimal place. Press SELECT. 7) When the screen displays Slope, DO NOT change slope of 1.00! Press SELECT again. When adjusting the Slope and Bias 6) When the screen displays Bias, type in the Slope Bias number from the prediction printout. Be careful of negative signs and decimal place. Press SELECT. 7) When the screen displays Slope, use the ZX-101XL s keypad to enter the Slope number from the prediction printout. Press SELECT again. If you enter a number incorrectly, press CANCEL to set the number back to 0.0 for bias or 1.00 for slope. Adjusting the Time and Date Adjusting the Time: 1) Turn Instrument on. 2) After countdown press MENU. Press the or button until the display reads Time & Date. 3) Press SELECT. The screen will display 1)TIME 2)DATE. 4) Press 1. 5) The screen will display the time currently in the instrument. 6) To adjust time, press 1 to cycle through hours, 2 for minutes, and 3 for seconds. 7) Once the time is adjusted correctly, press SELECT and the time will be set. Adjusting the Date: 1) Turn instrument on. Page 12

13 2) After countdown press MENU. Press the or button until the display reads Time & Date. 3) Press SELECT. The screen will display 1)TIME 2)DATE. 4) Press 2. 5) The current date is displayed on the screen. 6) To adjust the date, change the month by pressing 1, the day by pressing 2, and the year by pressing 3. 7) Once the date is adjusted correctly, press SELECT and the date will be set. Automatic/Manual ID Numbers The ZX-50IQ identifies all readings with a four digit identification number. The numbering is automatic consecutive numbering unless the instrument is set for manual number entry. To set the numbering to manual or automatic numbering: 1) Turn on the instrument. 2) After countdown is complete, press MENU. 3) Press the or button until the display reads Auto/Manual Num. 4) Press SELECT. 5) The display will show Auto Number or Manual Number. 6) To toggle to the correct numbering type, press the or button. 7) Once the correct numbering type is displayed, press SELECT. Resetting Automatic ID Number This will set the automatic consecutive numbering back to ) Turn on the instrument. 2) After countdown is complete, press MENU. 3) Press the or button until the display reads Reset ID #. 4) Press SELECT. Page 13

14 5) The display will show ID # Reset and then return to the main screen. Adjusting Number of Read Cycles The ZX-50IQ is designed to allow you to use between 1 and 9 repetitions to get the maximum accuracy with the minimum time needed for your samples. Zeltex recommends that you use two repetitions on fuel samples for the best accuracy. 1) Turn on instrument. 2) After countdown, press MENU. Press the or button until the display reads Set Readings. 3) Press SELECT. The screen will now display the current number of read cycles. 4) Press the or button to change the number of read cycles. 2, 4 and 8 are the available options. 5) Press ENTER at the number of your choice. Connecting to a Computer The ZX-50IQ comes with Calibration Software that allows you to create your own calibrations, make backups of the current calibration, and view the optical data for a sample. To do this you must connect the ZX-50IQ to the computer using the supplied USB Cable and put the ZX-50IQ into Data Link mode. 1) Turn off the instrument. 2) Connect the USB cable to the USB Port on the side of the ZX-50IQ. 3) Connect the USB Cable to a free USB port on the computer. 4) Turn on the instrument. 5) At the Measure Standard prompt, press SELECT ESC. 6) Use the arrow keys to cycle through the menu until Data Link appears. 7) Press ENTER. DATA LINK will be displayed in capital letters. Page 14

15 Storing Samples and Results The ZX-50IQ has the ability to store the ODs and the calculated results for 100 samples in battery-backed RAM. These are stored in the same memory as the calibration constants. This means that the samples are preserved even when the ZX-50IQ is turned off. The samples and results that are saved in the ZX-50's memory can be downloaded to the PC using the Calibration Software. To save the last sample that was read, press CANCEL, MENU, then the or button until the display reads Store Sample. Then press "Select". The instrument will print the message: Sample Saved X of 100 where X will be the position from 1 to 100. After saving 100 samples, the instrument will wrap around and begin to save again in position 1. If this happens, the ZX-50IQ will ask the user Overwrite X of 100? Press SELECT to confirm or CANCEL to cancel. Page 15

16 Warning and Error Messages The ZX-50IQ has a number of warnings and error codes built into it. Some of them are overridden automatically on the analyzer. Others require you to start the reading again. If the instrument overrides the warning, it will still print the warning on the printout. When a warning is overridden, analyze the sample a second time to ensure an accurate reading. If you believe that you are getting one of the warning or error messages in error or you have any questions about these messages, please contact Zeltex for technical support. Warning/Error Message Explanation 1) ERROR: TOO DARK This error occurs if the energy reaching the detector is less than the acceptable level. This is normally caused by the sample being too thick. 2) ERROR: TOO LITE This will be displayed if the detector is in saturation. This normally is caused by not placing the light shield on correctly during the reading or Zero Adjust or by the sample being too thin. 3) AMB. TEMP. HIGH or The ZX-50IQ was set up with a temperature check. If the instrument temperature is too cold or too hot, these warnings will appear on the printout. AMB. TEMP. LOW 4) SMP. TEMP. HIGH or The ZX-50IQ was set up with a temperature check. If the instrument temperature is too cold or too hot, these warnings will appear on the printout. SMP. TEMP. LOW 5) VALUE TOO HIGH or VALUE TOO LOW This occurs when the reading for a particular constituent is outside the range of the calibration. The results of samples read that lie outside of the calibration range are not as reliable. 6) BAD CURVE This will appear only if A, B, and C have been activated for the calibration. This can happen if you have the wrong product active. Page 16

17 7) HIGH VARIANCE This is displayed if the variance between the two readings is more than normal variance in the sample. This tells you that the repeatability within the sample is not as reasonable as we would expect. This could be caused by light leaks or just variations in the samples. 8) TIMEOUT At any prompt where you have to either enter a sample or remove a sample and press ENTER, the instrument will allow you only 30 seconds to do so. If, after the elapse of 30 seconds, you have not completed the task required, the ZX-50IQ will flash TIMEOUT and automatically return to Zero Adjust. This is a feature designed to not allow the readings to get stale. 9) LOW BATTERIES This is displayed when the batteries need to be replaced. 10) RAM RESET This message is displayed when there is a failure with the internal memory. This will cause all of the calibration constants to be lost. If this happens, you must restore a backup of the calibrations using the Calibration Software (refer to Creating/Restoring a Backup File in the ZX- 50IQ Calibration Software Manual). If the message occurs more than once, please contact Zeltex for further instructions. Page 17

18 General Specifications 1. MEASUREMENT Measuring Principle: Near-Infrared Transmittance based on technology from the United States Department of Agriculture using 14 wavelengths covering the range from 893 nanometers to 1045 nanometers. 2. PRINTER OUTPUT (Optional) Measured Results with time, date, and identification 3. POWER SOURCE Six AA 1.5V alkaline batteries or 9V A/C adapter (included) 4. DIMENSIONS 4.7 x 13.5 x 2.2 inches (12cm x 33cm x 5cm) 5. WEIGHT 3 lbs (about 2 kilos) Page 18

19 Glossary Accuracy Refers to how closely the readings of the known samples match the samples predetermined lab values in a given instrument. Bias The average overall shift of the calculated results from the ideal laboratory values. A Bias Adjustment will compensate for this. Constants (also referred to as K values) Figures determined during calibration of the instrument which are used in the equation: Result = K 0 + (K 1 OD 1 + K 2 OD K N OD N ) Constituent One of the properties of the product being measured, such as Protein or Moisture. Data Link The mode that the ZX-50IQ must be in to communicate with the Calibration Software. IDs The identification numbers of the samples. Multiple Linear Regression (MLR) The mathematical process to fit the optical data to the lab data. Optical Data (ODs) The data obtained by the instrument from each of its filters which it then applies to the above equation. Precision Refers to how closely the same sample repeats its readings in a given instrument Reduce / Reduction See Multiple Linear Regression Regression See Multiple Linear Regression Slope and Bias More than just an average overall shift of the calculated results from the ideal laboratory values. A Slope and Bias adjustment will compensate for this. Thermistor The probe in the sample chamber that measures the sample temperature. Page 19

20 Appendix 1: Analyzed Sample Form SEND TO: Zeltex, Inc. USA, FAX NO.: FROM: Company name, Country CONTACT PERSON: (please print) PHONE: Country code Number FAX: Enter in the Analyzed Sample columns, ten (10) samples that have been analyzed by your lab. In the corresponding columns, enter the ZX-50IQ readings for the same samples. Fax to Zeltex for advice concerning any needed adjustments. Samp. # LAB CON 1 50IQ CON 1 LAB CON 2 50IQ CON 2 LAB CON 3 50IQ CON 3 LAB CON 4 50IQ CON Page 20

21 Appendix 2: Daily AutoBIAS Adjustment Record Keep a blank copy of this sheet. PRODUCT # AutoBIAS AMOUNT FOR and NAME DATE CON 1 CON 2 CON 3 CON 4 Page 21

22 Appendix 3: Combination Lock for Carrying Case Your combination lock is set at the factory to open at 000. You may leave it at this setting or you can set your own secret combination in the following manner: 1) With the lock open, push button (1) in the direction of the arrow and hold down until the second operation has been performed. 2) Set number wheels (2) to the desired combination. Do not forget the combination you have set! 3) Now release the button (1). Press the button again as a check. Your case will now open only at your secret combination. If you want to change the combination again, simply repeat these steps. Page 22