Gehaka G810 User manual

User manual
Grain moisture meter model G810
Version: 1.00.000
Date: 08/2016

Summary
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G810 instalation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Measuring – Moisture measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Diagram of the functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 2. Conguration...............................................
2.1 Date and time adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Adjusting the number of elements to be averaged . . . . . . . . . . . . . .
2.3 Adjusting the number of decimal digits . . . . . . . . . . . . . . . . . . . . . . .
2.4 Adjusting the print mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Adjust number of copies of the printed report . . . . . . . . . . . . . . . . . .
2.6 Adjusting the Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7 Unlocking chamber door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.8 Uploading internet equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 Uploading internet equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 Self-report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.11 Language selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 RS232 Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Thermal printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Extreme conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 3.6 Technicalspecications:....................................
3.7 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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4I Grain moisture meter model G810
The G810 grain moisture meter includes all the characteristics to provide the most
accurate grain moisture reading.
With a simple operation and without operator intervention, model G810 will provide
moisture readings in a few seconds, for a wide variety of products.
Withasimplekeypadofonlyvekeys,themetercanbeeasilyoperatedandquicklyset
up, without the need of intensive user training.
By applying the “FLOW THRU” technology, G810 provides a fully automatic moisture
analysis. There is no need of previous sample weighing; temperature, density and
weight corrections are performed automatically, without the use of any other resource
or additional tables.
Calibration curves for each cereal have been obtained at Gehaka laboratories, using
samples collected from several areas of the plantation. Using the standard oven method
as a reference, measurement scales for each product were developed. These curves
weretransferredtotheG810memoryandtheyareeasilyidentiedbyproductname
and their version.
If the development of new calibration
curves is necessary, there is a function at
www.moisturetester.com.br which allows creating,
editing and installing them in your G810 grain
moisture meter.
G810 includes three instruments into one, managed by
a state-of-the-art internal microprocessor. These three
instruments are: One electronic scale, which measures
the sample weight; one built-in digital thermometer,
which measures the sample temperature inside the
chamber and the G810 temperature and nally one
capacity meter, which indicates the moisture percent,
to be later corrected by other parameters.
Introduction

Grain moisture meter model G810 I 5
Its program performs all the required calculations, thus providing extremely reliable
and repeatable readings. It also performs: automatic setting and checking the proper
operation of all electronic circuits.
The meter’s FLOW THRU design allows the performance of quick measurements, namely,
in less than 15 seconds and without the operator intervention, in a fully automatic way.
Just select the product, pour the sample in the G810 hopper, until a “BEEP” is given,
the G810 will load the sample, perform the measurement and automatically unload the
sample. After a few seconds, you will have the moisture and temperature measurement,
all this shown on an easy to read 16-character / 2-line alphanumeric LCD display, in
English.
G810 has also a bidirectional RS232C serial communication port. With this, we can
connect the G810 to a printer so the measurement is printed in a label, thus making
the counterchecking easier, or else, we can connect the meter to a PC and transfer the
information to a managing system.
The G810 is operated by a FULL RANGE automatic power source, which means the meter
operation is ensured for 90 - 240VAC mains, thus protecting the meter from network
voltage variations.
Indication conventions for G810 LCD display:
>Right-hand arrow
<Left-hand arrow
YES Option acknowledgment.
ESCAPE Exit.

6I Grain moisture meter model G810
Description
1. SAMPLE LOADING HOPPER
Place where the cereal sample to have the
moisture measured will be weighed
2. LCD DISPLAY
Displays results and settings with
alphanumeric characters.
3. THERMAL PRINTER (OPTIONAL)
Device for printing measurement results.
Silent, low consumption operation.
4. DRAWER
Receives the cereal sample from the chamber,
after the measurement was performed. The
meter unloads automatically.
5. PLASTIC SCOOP
Used for pouring the sample into the funnel.
6. SAMPLING CUP AND FUNNEL
This cup shall be used for taking the sample.
Yourfunnelisusedformakingthecuplling
easier and “cutting” the sample excess.
7. ON/OFF
Switches ON/OFF the G810 meter.
Operating with numerical setting multiplies
by 10 the indicated value.
8. YES
 Conrmsfunctionorsettingselection.

Grain moisture meter model G810 I 7
9. RIGHT-HAND ARROW
It displays the next function or increases the value of one scale interval.
10. LEFT-HAND ARROW
Displays the previous function or decreases the value of one scale interval.
11. ESCAPE
Exits a function or setting that is being operated at that time. Operating with
numerical setting divides by 10 the indicated value.
12. POWER CORD CONNECTOR
Place where the power cord will be connected. G810 operates between 90 to 240
VAC.
13. CARRYING HANDLE
Used for carrying the G810. Caution: before lifting the G810 remove the drawer,
because due to the tilt it may fall down.
14. RS232 SERIAL PORT CONNECTOR
Data output for printer or PC.
15. HARD LOCK
 When connected to RS232 serial output, it releases access to “Conguration”
function,whereG810congurationswillbemade.
ADJUSTING A VALUE
In addition to the direct functions of the keypad, it can assume other functions, and one
of them is making easier to type a value.
When the setting of a value is selected, the display will show the current value, and to
change it proceed as follows:
KEY FUNCTION
ON/OFF Multiplies the current value by 10;
RIGHT-HAND ARROW Increases the indicated value by one scale interval;
LEFT-HAND ARROW Decreases the indicated value by one scale interval;
ESCAPE (EXIT) Divides by 10 the current value;
YES   Conrmsthecurrentvalueandcompletesthesetting.

8I Grain moisture meter model G810
Carefully check the packing, if there were marks and damages in the cardboard case,
this means that there were problems during shipment.
Open the packaging, checking the conditions of G810. Remove the equipment and check
whether all its accessories are included.
Place the G810 on a stable table, in order to ensure it will not move during the operation.
Remove the adhesive tapes fastening the drawer and check whether it slides easily.
If the acquired model features a Thermal Printer, install the paper roll as stated in
procedure “3.2 Thermal Printer”.
ConnecttheACcordtotheconnectorontherearpanelandtitsteadily,takingcare
that the plug is fully inserted in the connector. It is not necessary to verify the mains
voltage; the power supply is FULL RANGE, not requiring mains selection. We also do not
recommend the use of voltage stabilizers.
When the cord is plugged in the outlet, G810 will start its operation, performing a self-
diagnosis in order to check whether its components are working properly. If by any
chancethemeterveriesthatsomeofitscomponentsisimproperlyoperating,itwill
indicate an error message on the display regarding the fault.
Leave the G810 meter preheating for 10 minutes. The G810 meter shall operate
continuously plugged in the outlet; use only the ON/OFF key. This way, the equipment
enters the “sleeping” mode and the power consumption is lower than 1 W, however it is
ready to operate. The G810 meter shall be operated in a place free of excessive dust and
with room temperature between 0 º and 40 ºC.
G810 installation

Grain moisture meter model G810 I 9
1. Measuring – Moisture measuring
1. Select“Measuring”fromthemainmenu,depressYEStoconrm;
2. Select the type of cereal you want to measure the moisture. Use Right hand/
LefthandARROWkeysuntilndingthedesiredproduct.Indicationsbelowthe
product names are the moisture minimum and maximum limits the G810 meter
isabletomakethereading.Depress“YES”toconrmyourchoice.
3. Take a sample of at least 200 g of the product you want to
measure the moisture and,using the plastic scoop, pour the
cereal sample into the funnel of the Sampling Cup,untillling
the Funnel. Slightly lift the funnel and “wipe o” the sample
excess, and then pourthe sample into the G810 meter hopper, a
beep will be heard indicating the sample wasweighed.
4. Within a few seconds, the G810 meter will display the value
of product moisture. If theRight hand/Left hand keys are
depressed, the G810 meter will display all the measurements
made, namely:
================
WHEAT
M o i s t.: 13.39 %
================
When selecting Right hand/Left hand Arrow we have:
================
Te m p. 24.8ºC
Dens.:79.9 kg/hL or lb/bu -> Sample density.
================

10 I Grain moisture meter model G810
5. After having performed a successful measurement, the G810 meter will send all
measurement data through the serial output to the printer or PC. An example of
report follows:
================================
GEHAKA G810
Fir m wa r e Ve rsion 1.00.000
Hardware Version 1.00
Serial No. 13020101001000
================================
Current Product...= Wheat
Equation Version. = 64
S a m pl e .......... = 21
Sample Temp………... = 28.0 ºC
M et e r Te m p....... = 28.9 ºC
Sample Weight…….. = 167.7 g
D e n sit y ......... = 77.0 k g/ h L
--------------------------------
M o i s t u r e ........ = 13.39 %
--------------------------------
--------------------------------
Signature 18:20
Responsible person 25/02/13
================================
NOTE: If there is a great temperature dierence between the product and
the G810 Hopper where the temperature sensor is located, the meter
will wait until there is a thermal balance between both of them. This
could introduce a delay for the temperature measurement to be
made. This way, we improve the meter precision, by measuring the
actual sample temperature.
7. After the measuring cycle, the instrument will unload the sample into the drawer.
Remove sample fromdrawer.
8. When the G810 meter is showing the measurement results on the display and
a new sample is pouredinto the hopper, the G810 meter will perform a new
measurement,usingthesamecongurationofthepreviousmeasurement.Ifthe
ESCAPE key is depressed, the MEASUREMENT option will be exited,returning to
the MAIN menu.
NOTE: If the moisture content is higher than 22%, the G810 meter will request
measuring again the same sample, repeating the measurement three
times in order to ensure a higher reading precision.