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OPERATOR’S MANUAL

M-3G/M-20P Operation and File Handling

11001-1361-200512

OPERATION 7

OPERATION

IMPORTANT: The cell must be empty and the pouring cup must be 

removed before turning the unit on and while the 
hourglass is displayed.

FILL TECHNIQUE

This unit eliminates sample weighing by utilizing advanced technology to 
compensate for density including that associated with sample compaction 
variations in the measurement cell. Some grain calibrations provide 
excellent compensation, while others are slightly affected by sample 
compaction. Therefore, it is recommended that the standard fill technique 
be scooping or catching grain from an auger. If pouring is required, pour at a 
fast rate (dump the grain into the cell). Do not pour slowly. In all cases, be 
consistent in your method of fill. Biasing can be used to correct for small 
errors associated with different techniques.

EMPTYING CELL

It is essential that the cell be empty upon power up of the unit. Empty cell 
correction takes place immediately after the unit is powered on and is 
shown by an hourglass on the display.

GRAIN SAMPLE TESTING

An empty cell reference measurement is taken immediately after power-up. 
This reference measurement is used for all product testing until the unit is 
powered off. Thus, it is critical that the cell be clean and completely empty 
when the unit is powered up and the hourglass is displayed. Keep the 
measurement cell opening clear of hands or other objects during this 
period.

If the unit is to be used for an extended period of time without a normal 
power down, it is recommended that the unit be powered off periodically so 
that new empty cell readings may be taken. This should only occur where 
continuous sample measurements are being made with no time in between.

To test a grain (see Figure 1):

1. Power the unit on by using the 

On/Home

 key. Allow the unit to 

complete the self-test. An hourglass will be displayed while the 
self-test is being performed.

2. Once the unit has completed the self-test, select the grain, fill the cell, 

and press the 

Enter

 key. The unit will display the sample being tested 

by teardrops appearing across the screen.

On/Home key

Enter key

Summary of Contents for M-20P

Page 1: ...ain Sample Testing 7 Changing Products Grains 9 Bias Adjustment 9 Averaging 10 Adding Samples To The Average Quick Key 12 Downloading Calibrations 13 Quick Guide Downloading 13 Quick Guide Deleting Fi...

Page 2: ...M 3G M 20P Operation and File Handling 11001 1361 200512 ii...

Page 3: ...at follows Be alert to the possibility of personal injury or death Use of the word WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury Use...

Page 4: ...OPERATOR S MANUAL M 3G M 20P Operation and File Handling 11001 1361 200512 2 SAFETY NOTICES...

Page 5: ...unit s operation KEY FUNCTIONS ON HOME KEY The On Home key is used to power the unit on and return the unit to the Main menu Holding and pressing this key will power the unit off ENTER KEY The Enter k...

Page 6: ...OPERATOR S MANUAL M 3G M 20P Operation and File Handling 11001 1361 200512 4 INTRODUCTION...

Page 7: ...USB cable Using an executable file provided on the DICKEY john website located at www dickey john com the PC can interrogate the unit and retrieve its calibration files or it can send the unit new cal...

Page 8: ...o radio or television reception which may be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient...

Page 9: ...takes place immediately after the unit is powered on and is shown by an hourglass on the display GRAIN SAMPLE TESTING An empty cell reference measurement is taken immediately after power up This refer...

Page 10: ...on and File Handling 11001 1361 200512 8 OPERATION 3 When the unit has completed the test the moisture value will be displayed Press the Enter key to save to an average Figure 1 Grain Sample Testing E...

Page 11: ...ct The product may still be selected using the Enter key or other products may be selected by using the Up or Down Arrow keys 3 The Main menu will be displayed with the product name listed at the top...

Page 12: ...egisters are full when adding a new value the value in register 1 will be replaced with the new value being placed in register 10 Clearing the registers allows all 10 positions to be recalculated The...

Page 13: ...lect AVERAGE and press the Enter key 2 On the Average screen select READ and press the Enter key The average of all stored samples will be displayed 3 Press the Up and Down Arrow keys to scroll throug...

Page 14: ...KEY This function provides a short cut method to add a sample to the average It is provided to make the process more convenient for a quick addition to the average registers This function may also be...

Page 15: ...Select the M 3G 5 Select the PC COMMUNICATIONS PROGRAM 6 Save the file to your computer s desktop 7 Locate the newly installed icon on your computer s desktop called ag_pmt_M3G_M20P_pcCommProgram exe...

Page 16: ...The number in the file name is the formal documentation number used at DICKEY john to identify the particular file These files must be transferred and saved on the computer s hard drive from the websi...

Page 17: ...formation is available for selection Other file transfers are beyond the scope of this document including calibration file transfers that allow the M 3G or M 20P to collect calibration data and transf...

Page 18: ...OPERATOR S MANUAL M 3G M 20P Operation and File Handling 11001 1361 200512 16 DOWNLOADING CALIBRATIONS...

Page 19: ...en select INFO and press the Enter key 3 On the Info screen the unit will display the part number serial number software version model name DICKEY john phone number and battery voltage Figure 8 Batter...

Page 20: ...OPERATOR S MANUAL M 3G M 20P Operation and File Handling 11001 1361 200512 18 MAINTENANCE...

Page 21: ...the desired moisture can force the reading into range ERROR 22 Probable Cause 1 Moisture is above the upper limit of the calibration table Corrective Action 1 If you feel the sample should be within a...

Page 22: ...OPERATOR S MANUAL M 3G M 20P Operation and File Handling 11001 1361 200512 20 ERROR CODES...

Page 23: ...m date of original installation and is returned to DICKEY john within 30 days after such defect is discovered DICKEY john will at our option either replace or repair said part This warranty does not a...

Page 24: ......

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