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F-750 Instruction Manual rev. 3/26/2014 

 

 

1554 NE 3

rd

 Ave, Camas, WA 98607, USA                      Phone (360) 833-8835  Fax (360) 833-1914  

[email protected]                                                           http://www.felixinstruments.com

 

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Introduction 

The F-750 Handheld Brix & Dry Matter Meter uses Deep Near-Infrared Spectroscopy to estimate Dry 
Matter, Brix (Total Soluble Solids), and assess fruit maturity and skin color. It delivers the stability, 
repeatability, and precision that is necessary for successful chemometric-based measurements in a 
portable easy-to-use package. 

The F-750 aids agricultural suppliers in developing a fruit maturity and sweetness management process 
for the benefit of growers, processors, and consumers. 

Harvesting immature fruit has a high impact on fruit eating quality. Judging fruit maturity by shape and 
color alone results in varying success. The F-750 solves this issue with its simple user interface and 
precise measurements. It comes equipped with GPS for spatial mapping, enabling users to generate 
orchard-wide maps of fruit parameters, such as planning for harvest sequences and improving crop 
management techniques. 

“For quantitative analysis of complex samples, fast and inexpensive spectroscopic methods are 
preferable to the slow, expensive, and destructive "wet chemical" approach. Historically, one 
disadvantage of spectroscopic methods has been the difficulty of determining frequency regions where 
the constituent of interest selectively interacts with light. Now with the power of multivariate 
techniques such as Partial Least Squares, we can use the spectra (X) to predict the concentration of the 
constituent of interest (Y), with accuracy approaching that of wet chemistry.” 

Adapted from Sjostrom and Wold (1983) A multivariate calibration problem in analytical chemistry solved by 
partial least-square models in latent variables. Analytica Chimica Acta, (150) 61-70

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Features 

 

Non-destructive measurement of fruit maturity 
and sweetness 

 

Link orchard temperature, and the effect of tree 
canopy management, with fruit quality 

 

GPS allows spatial mapping for monitoring fruit 
parameters in the field 

 

Lightweight  

 

Easy to use 

 

Stable, Repeatable, and Precise 

 

Transflective display enables easy viewing in 
varied light conditions 

 

 

Содержание F-750

Страница 1: ...F 750 Produce Quality Meter Operation Manual...

Страница 2: ......

Страница 3: ...6 How to Generate a Model 7 Partial Least Squares Basics 11 B coefficient Regression 11 How to Collect Spectra and Reference Values 12 Cleaning and Maintenance 13 Firmware Update Procedure 13 Warning...

Страница 4: ...t parameters such as planning for harvest sequences and improving crop management techniques For quantitative analysis of complex samples fast and inexpensive spectroscopic methods are preferable to t...

Страница 5: ...weighted coefficients to the spectrum are applied 3 Coefficients are summed over the weighted spectra 4 A predicted concentration is reported by the summation Unpacking the F 750 The F 750 will arrive...

Страница 6: ...1st and 2nd block going across screen The 3rd block is for processing data the 4th block is for saving measurements At the 5th block the measurement is complete and displays the record to be reviewed...

Страница 7: ...ear Using the scale coefficient 1 and scale coefficient 2 menus a new value to use for the scale coefficient can be entered The scale coefficient is from the regression vector Press the left arrow to...

Страница 8: ...n The options are to create a new training set delete a training set or modify an existing training set Create New Training Set At the create new training set menu enter the name to use for this new t...

Страница 9: ...r 0 65 The lamp state option is used to turn the lamp on or lamp off Press the down up to turn off on The lamp automatic gain which is used to fine tune how much the logic has control of the gain can...

Страница 10: ...F 750 Instruction Manual rev 3 26 2014 1554 NE 3rd Ave Camas WA 98607 USA Phone 360 833 8835 Fax 360 833 1914 sales felixinstruments com http www felixinstruments com 7 How to Generate a Model...

Страница 11: ...nstrument to the computer and open the software 2 Insert the SDcard to the computer 3 Prompt user for the location of the calibration files 4 Load Slov Golay scans into the program 5 Prompt user for t...

Страница 12: ...Leave One out Cross Validation k 1 cross validation 9 Program determines if there are outliers and allows the user to label outliers 10 If outliers exist systematically remove each outlier and determ...

Страница 13: ...60 833 8835 Fax 360 833 1914 sales felixinstruments com http www felixinstruments com 10 13 Graph the B coefficient or weighted regression coefficients 14 Check the B coefficient for noise If noise is...

Страница 14: ...pectra and determine what preprocessing is required 4 Select useful region 5 Preform the Regression Cross Validation 6 Evaluate results B coefficient Regression Perform the regression by calculating t...

Страница 15: ...nstruction Manual rev 3 26 2014 1554 NE 3rd Ave Camas WA 98607 USA Phone 360 833 8835 Fax 360 833 1914 sales felixinstruments com http www felixinstruments com 12 How to Collect Spectra and Reference...

Страница 16: ...nuggly installed The rubber bumper and the case of the F 50 can be wiped clean with a cloth Firmware Update Procedure The firmware of the F 750 is updated by connecting the instrument to a computer us...

Страница 17: ...y and M Golay 1964 Smoothing and Differentiation of Data by Simplified Least Squares Procedures Analytical Chemistry 36 8 1627 1639 M Sjostrom and S Wold 1983 A multivariate calibration problem in ana...

Страница 18: ...plication of commercially available low cost miniaturized NIR spectrometers to the assessment of the sugar content of intact fruit Plant Physiol 27 1175 1186 K Walsh R Long and S Middelton 2007 Use of...

Страница 19: ...orbance of chlorophyll This will make up a set of properties that will be predicted and displayed after a model file is loaded on the F 750 NIPALS Non linear Iterative Partial Least Squares iterative...

Страница 20: ...f the model For example a dry matter model with a RMSE of 0 0123 has an error of 1 23 DM or a 1 23 prediction error An acceptable amount of error is determined by the type of property being predicted...

Страница 21: ...are to answer your technical questions by phone or by e mail at support felixinstruments com Felix Instruments contact information Felix Instruments 1554 NE 3rd Ave Camas WA 98607 USA Phone 800 767 01...

Страница 22: ...ntent in fish dry matter of cheese titratable acids quantification as well as many other characteristics 2 How do I recharge the batteries of the F 750 a To recharge the batteries twist to remove the...

Страница 23: ...not authorized by Felix Instruments Material and equipment covered hereby which is not manufactured by Seller is to be covered only by the warranty of its manufacturer Seller shall not be liable to th...

Страница 24: ...750 Instruction Manual rev 3 26 2014 1554 NE 3rd Ave Camas WA 98607 USA Phone 360 833 8835 Fax 360 833 1914 sales felixinstruments com http www felixinstruments com 21 F 750 PRODUCTION TEST CHECK SHEE...

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