Kett AN-820 User manual

Near Infrared Grain Tester AN-820
Operating Manual

Contents
1. Features ................................................................................................ 4
2. Main unit & Parts names ........................................................................ 5
3. Specifications ......................................................................................... 7
4. Keypad (Explanation) ............................................................................. 8
5. Preparation............................................................................................. 9
5-11 . Power ON ............................................................................................ 9
5-21 . Calibration Selection............................................................................ 10
6. Measuring Procedure ............................................................................. 11
6-11 . Measurement....................................................................................... 11
6-21 . Average Display................................................................................... 13
6-3-1. Setup the Display Conditions............................................................... 14
6-3-2. Setup the Indication Range.................................................................. 15
(1) Protein CM Display......................................................................... 16
6-41 . Bias Adjustment................................................................................... 16
(1) Manual adjustment mode ............................................................... 17
(2) Automatic adjustment mode........................................................... 19
7. Time settings .......................................................................................... 21
8. Communication.............................................................................................. 22
9. Replacment for lamp .............................................................................. 23
10.Cleaning ................................................................................................ 24
<Appendix> Guidelines for using AN-820 with maximum accuracy............... 25

4
The Model AN-820 composition analyzer is a desk top grain tester
(Transmittance type) that utilizes applied near-infrared rice analysis
technology.
It employs total-grain measurement formulas for measuring without
crushing the sample grain to pieces, so it makes it possible to analyze
grain quickly and easily.
By utilizing tungsten lamp, grating system and NMOS photo-diode array
detector, and the result is that we are able to achieve high stability.
1. Features

5
2. Main unit & Parts names
Cover
Contrast adjustment control
Key functions
Cover
Printer output port
Serial output port(RS-232C)
Power cable connection
Power switch
Fuse holder
Measurement chamber
Display
< Rear side >
< Front side >

6
[ Accessories ]
Sample case
Power cable
Sampling cup Fuse
Operating manual
Operating Manual
Near Infrared Grain Tester AN-820
Standard samples
(Brown rice / Milled rice)
Storage container for standard samples
Standard samples
Storage container

7
3. Specifications
Measurement Method : Near Infrared Transmittance
Light Source : Tungsten lamp (lamp life 20,000hrs)
Applications : Short Brown Rice, Short Milled Rice, H-Moist Short B.R., R.F.R-B.G.,
R.F.R-TWR, Long Brown Rice, Long Milled Rice
Constituents : Protein, Moisture, Amylose (reference value)
Sample Volume : Approx. 60mL
Calibration Memory : 4 constituents ×8 channels
Measurement Time : Approx. 40 sec
Operating Environment : 10~35℃(Non-condensation)
Display Format : 320 ×240 dot-matrix large-size LCD
Displays Content : Calibration settings / names, Protein, Moisture,
Amylose (reference value), Quality Evaluation Value (Q.E.V)
Power Source : AC100V~240V (50/60Hz)
Dimensions : 260(W) ×350(D) ×380(H)mm
Weight : 13kg
Accessories : Power cable 1pc
Sample case 1pc
Sampling cup 1pc
Fuse 1pc
Operation manual 1pc
Standard samples (Brown Rice, Milled Rice) 2pc. (per each)
Storage container for standard samples 1pc
Option : Printer model VZ-330 (100V/220V)
Note : AN-820 should be used below 35℃in environment condition. If the environment temperature is
over 50℃, the precision spectroscope would be damaged. And The AN-820 should be also stor-
aged below 50℃environment condition.
Note : Pre-calibration with recommended conditions are as below.
Display range Protein : 4 ~ 12%
Moisture : 10 ~ 20%
Amylose(Reference) : 10 ~ 40%
Recommnedation conditions : 15~30℃(Non-condensation)
Note : A backup battery has been built to this unit so that even if the electricity is cut-off, the calibration
in memory will not be lost. Please contact the service desk of our company regarding an replace of
backup battery.

8
Scroll key
Function key
Enter key
Return key
4. Keypad Explanation
Enter key : Press this key when you begin measuring or you want to execute or confirm
a selected item.
Return key : Press this key when you want to return to a previous screen or when you
want to invalidate a selected item.
Scroll key : Press this key when you are selecting an item at the top of the screen or
when you want to increase or decrease a numerical value.
Function key : Press this key when you will use a function that was specially set-up at the
top of the screen.

9
5. Preparation
5-1. Power ON
Power cable Outlet
Power Connector
Power switch
Ground
Note : Approximately one hour before operation, turn the power “On”, and begin warming up the device.


 ［ Measurement ］
 ［ Application  ］ 1ShortBrown
 ［ Display    ］
 ［ Adjustment  ］  Serialnumber
 ［ Time     ］  AB01234
 ［ Communication］  VER1.00
 2009－05－31  2 3: 59
Operation Display Explanation
1. Plug the power cable into this
unit and connect it to outlet.
2. Turn the power switch “ON”,
which is located rear side.
Initial screen will be displayed. [ ] means, turn [ON]
[] means, turn [OFF]
In case that the screen isn’t
Showing or is hard too see, ad-
just the “Contrast set dial” on the
bottom of unit by turning it until
thr screen is easy to see.

10
5-2. Calibration Selection
With near-infrared composition analyzers similar to this unit, you prepare each pre-
calibration and then analysis compositions. AN-820 has an eight channel capacities
and pre-calibrations is done by our company. Before starting analysis, please select
a proper calibration according to the grain you want to measure.
Note : A backup battery has been built to this unit so that even if the electricity is cut-off, the calibration in
memory will not be lost. Please contact the service desk of our company regarding an replace of
backup battery.


 ［ Measurement ］
 ［ Application  ］ 1ShortBrown
 ［ Display    ］
 ［ Adjustment  ］  Serialnumber
 ［ Time     ］  AB01234
 ［ Communication］  VER1.00
 2009－05－31  2 3: 59
［Application］
  1ShortBrownRice
  2ShortMilledRice
  3H-MoistShortB.R.
  4R.F.R-B.G
  5R.F.R-TWR
  6LongBrownRice
  7LongMilledRice
8
Selecttheapplication.
［Application］
  1ShortBrownRice
  2ShortMilledRice
  3H-MoistShortB.R.
  4R.F.R-B.G
  5R.F.R-TWR
  6LongBrownRice
  7LongMilledRice
8
Selecttheapplication.


 ［ Measurement ］
 ［ Application  ］ 1ShortBrown
 ［ Display    ］
 ［ Adjustment  ］  Serialnumber
 ［ Time     ］  AB01234
 ［ Communication］  VER1.00
 2009－05－31  2 3: 59
Operation Display Explanation
1. By using keys, select
the “Calibration” setting.
2. Press the key.
The list of pre-calibration is
displayed.
The existing, selected Calibration is
diplayed.
3. Select a calibration by using
keys.
4. Press the key.
Calibration will be selected and
back to initial screen.