Dickey-John GAC 2500 User manual

MINI GAC® 2500
GRAIN MOISTURE ANALYZER
Operator’s Manual
A DIVISION OF TSI
®
®

OPERATOR’S MANUAL
mini GAC
®
2500 TOC / 1
6010546 Rev C
SAFETY NOTICES ...................................................................................2
LIABILITY ...........................................................................................4
INTRODUCTION .......................................................................................6
QUICK START GUIDE............................................................................11
BLUETOOTH .......................................................................................... 13
SETTINGS...............................................................................................17
NORMAL OPERATION ..........................................................................25
HISTORY .........................................................................................30
GRAIN CALIBRATIONS ......................................................................... 31
ACCURACY ............................................................................................ 33
ERROR CODES...................................................................................... 35
DIAGNOSTICS........................................................................................43

OPERATOR’S MANUAL
2/ SAFETY NOTICES mini GAC
®
2500
6010546 Rev C
SAFETY NOTICES
Safety notices are one of the primary ways to call attention to
potential hazards. An absence of specific alerts does not mean
that there are no safety risks involved.
This Safety Alert Symbol identifies
important safety messages in this
manual. When you see this symbol,
carefully read the message that 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 of the word CAUTION with the Safety Alert Symbol
indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
Use of the word CAUTION without the safety alert
symbol indicates a potentially hazardous situation
which, if not avoided, may result in equipment damage.
DISCLAIMER
DICKEY-john reserves the right to make engineering
refinements or procedural changes that may not be reflected in
this manual. Material included in this manual is for informational
purposes and is subject to change without notice.

OPERATOR’S MANUAL
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®
2500 SAFETY NOTICES / 3
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FCC COMPLIANCE STATEMENT
(Bluetooth®Equipped models only)
FCC ID: QOQBLE112
IC: 5123A-BGTBLE112
Model 46789
This device complies with FCC Rules Part 15. Operation is subject
to the following two conditions: (1) this device may not cause
harmful interference and (2) this device must accept any
interference that may be received, including interference that
may cause undesired operation.
Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment

OPERATOR’S MANUAL
4/ SAFETY NOTICES mini GAC
®
2500
6010546 Rev C
LIABILITY
DICKEY-john designed the mini GAC®2500 to measure oilseed
and grain moisture content. We rigorously test and calibrate
each instrument before it leaves the factory. Use of the
instrument in the field, however, is subject to environmental
and operating conditions beyond our control. DICKEY-john
disclaims all liability for damages resulting from
environmental and operating conditions beyond our control
and for any damages that might follow incorrect results due
to those environmental or operational conditions.
Therefore, we expect the operator to take responsibility to
assure that the results of the testing is as accurate as possible
by following approved maintenance procedures on a regular
basis, by cleaning the instrument and its sensors on a regular
and as-needed basis depending on the amount of dust, dirt, and
debris encountered in the instrument’s use, by monitoring
performance using daily check samples, and by adhering to the
check procedures set forth in the manual. As with any kind of
sophisticated equipment, optimal results depend in part on
proper cleaning and maintenance.
For questions concerning these issues, refer to the product
warranty, or call your DICKEY-john representative.

OPERATOR’S MANUAL
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®
2500 SAFETY NOTICES / 5
6010546 Rev C

OPERATOR’S MANUAL
6/ INTRODUCTION mini GAC
®
2500
6010546 Rev C
INTRODUCTION
NOTE: Refer to the
Normal Operation section
for additional information
on the screen displays
of Selecting and
Testing Grain.
The mini GAC® 2500 grain testers are portable units that quickly
test grain and automatically calculate moisture content and test
weight/bulk density of the sample. The unit operates using four
function keys coupled with a menu-driven operating system.
The mini GAC®2500 portable tester offers:
• Moisture readings
• Test weight readings
FEATURES
• Plastic loading cup (Loader)
• 9V lithium battery (included in
select models only)
• LCD digital display
• Bluetooth communication
(select modelsonly)
• Multiple languages
• Backlit display
• Memory for up to 20 product
(grain) tests per language
• English/Metric units
• Carrying case
• USB port for calibration loading
• No screw cap or sample
preparation required
Figure 1
mini GAC®2500 and accessories

OPERATOR’S MANUAL
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®
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SPECIFICATIONS
Operating Temperature Range: 40 - 113
degrees F, (5 - 45 degrees C)
Validated Grain Temperature Range: 40 - 113
degrees F (5 - 45 degrees C)
Operating Grain Temperature Range: 32 - 122
degrees F (0 - 50 degrees C)
Recommended Maximum Temperature Difference
(between analyzer and grain): 36 degrees F (20 degrees
C)
Humidity: 5-95%, noncondensing
Weight: 2 lbs 7 oz (1.1 Kg)
Power Source: A 9V lithium battery is included in select
models only. A low battery indicator on the display
identifies when a replacement is necessary. Lithium
battery replacements are recommended when required.
STORAGE
The Loader should be turned upside down and placed
inside the unit for storage.
Figure 2
Loader/Unit Storage
Loader
mini GAC unit

OPERATOR’S MANUAL
8/ INTRODUCTION mini GAC
®
2500
6010546 Rev C
BATTERY
A 9V lithium battery is included in select models only. A low
battery voltage menu will appear when battery life has almost
reached capacity. The unit is still capable of making accurate
measurements, but the battery should be replaced soon.
IMPORTANT: Leaving Bluetooth in the “Always On” mode
has the potential to drain the battery (select
models only)
A dead battery warning displays when the battery has reached
its end of life and is no longer capable of making accurate
measurements. The unit will no longer perform any functions
other than to power off the device. If a dead battery warning
displays prior to saving some settings, the information could
potentially be lost.
Battery life is prolonged by reducing the Power Down setting of
inactivity. The power down setting range is selectable from 10 to
90 seconds. The default setting is 30 seconds. Lithium battery
replacements are recommended when required.
on/off
home
IMPORTANT: Follow your local government
regulations on disposal and recycling of
lithiumbatteries.
SWITCHPAD FUNCTIONS
ON/OFF/HOME
The On/Off/Home button is pressed momentarily to power the
unit On and held for 2 seconds to power the unit Off.
Pressing the Home button on any page will discard any changes
and return to the Home menu.
ENTER
The Enter button is pressed to start a measurement from the
Home menu. The Enter button is also used to make a menu
selection, and if applicable, save the selection and return to
the Home menu.
In addition, pressing the Enter button from the Home
menu and holding for 4 seconds activates the Bluetooth
communication function and begins searching for a paired
device (select models only).

OPERATOR’S MANUAL
mini GAC
®
2500 INTRODUCTION / 9
6010546 Rev C
UP
DOWN
UP AND DOWN ARROW BUTTONS
The Up and Down Arrow buttons are used to scroll through the
items on the menu.
(Figure 3) illustrates the Switchpad area.
Figure 3
Switchpad
Current Product
Display Screen
On/Off
Home
Up/Down
Arrow
Keys
Enter
Use care when handling the mini GAC 2500 unit.
Any misuse, such as tossing, dropping, or throwing,
can potentially damage the internal measuring device.
The unit should be stored in the case when not in use.
CURSOR SELECTION TOOL
A Cursor Selection Tool in front of a heading name on the display
is used as a navigation tool that, when the Enter button is pressed,
the selected item’s menu will display.
>

OPERATOR’S MANUAL
10/ INTRODUCTION mini GAC
®
2500
6010546 Rev C
Figure 4
Cursor Selection Tool
1. Cursor Selection
Tool highlighting
Product header.
2. Pressing Enter on the
Product header displays the
Product menu.
3. PressingEnteron the
Soybeansheader displays
the Soybeans menu.
Corn
Product
Average
Product
Corn
Soybeans
Soybeans
Product
Average

OPERATOR’S MANUAL
mini GAC
®
2500 QUICK START GUIDE / 11
6010546 Rev C
QUICK START GUIDE
IMPORTANT: The cell must be empty and the loading cup
removed before turning the unit ON and
during all testing (progress bar indicates
when testing).
SELECTING GRAIN
1. Press the On/Off/Home button to power on the unit.
2. To select a grain type, press the Down Arrow button to
position cursor at the Product heading and pressEnter.
3. Select a product (grain) using the Up or DownArrow
button and press Enter.
– The selected grain appears at the top of
the display.
GRAIN SAMPLE TESTING
1. Remove Loader cup from the top of unit.
2. With the product name selected at top of display, press the
Enter button.
3. The cell must be empty, upright, and still to perform an empty
cell test. When the Empty Cell menu displays, press the Enter
button.
IMPORTANT: The empty cell reference measurement is used
for all product testing until the unit is powered
off. It is critical that the cell be clean and
completely empty when the unit
is on. Keep the measurement cell opening
clear of hands or other objects during
this period.
4. After the empty cell test completes, the Fill Cell
menu displays.
5. With the slide closed, scoop or pour grain into theLoader
over the minimum fill line (Label on loader identifies
minimum fill line) (Figure 5).
6. Place the loader cup on top of the unit.
7. When secured, pull loading cup slide out to dispense grain
into the unit.
8. Remove the loading cup and use the level edgeto
strike any excess grain from the unit.

OPERATOR’S MANUAL
12/ QUICK START GUIDE mini GAC
®
2500
6010546 Rev C
9. Press Enter to begin the test.The unit displays sample
testing icons.
IMPORTANT: A slight tilt when holding and testing grain is
acceptable. If tilt is more than 10 degrees, an
error warning is possible.
10. When grain test completes, press Enter to store the results.
– Press Enter again to see the average of all samples and
press the Up or Down Arrows to scroll through all
previous readings.
11. Press the Home button to return to the Home menu.
IMPORTANT: Refer to the Error Codes and Troubleshooting
section if an error displays after a grain test.
Figure 5
Scoop, Pull Slide, Strike Grain
1. Scoop 2. Pull Slide 3. Strike Grain
Use care when handling the mini GAC 2500 unit. Any
misuse of the unit, such as tossing, dropping, or throwing
can potentially damage the internal measuring device.
The unit should be stored in the case when not in use.
BLUETOOTH COMMUNICATION
Bluetooth is turned on by pressing the Enter button for four
seconds at the Home screen, if desired. Bluetooth turns off after
a power cycle (select models only).

OPERATOR’S MANUAL
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®
2500 BLUETOOTH / 13
6010546 Rev C
Corn
History
Bluetooth
BLUETOOTH
NOTE: Bluetooth is not
available in all countries.
Section (Page 13-16) may
not apply
A Bluetooth connection between the mini GAC 2500 and
a mobile device is possible by downloading a DICKEY-john
app, pairing the devices, and adjusting the mini GAC 2500
Bluetooth settings.
The Bluetooth screen allows changing Bluetooth default settings
to user-defined preferences.
TIP: Bluetooth can be turned on by pressing the Enter
button for four seconds at the Home screen. Bluetooth
turns off after a power cycle.
SETTINGS
To View Bluetooth Settings:
1. From the Home menu, press the DownArrow button and
scroll to “Bluetooth”.
2. Press the Enter button to display Bluetooth
settings options.
Figure 6
Bluetooth Settings
ADJUSTING THE TIMEOUT SETTING
The “On” timer starts when the mini GAC 2500 tries to connect to
a mobile device. “On” time defines how long the device stays
active before forcing the Bluetooth to go into sleep mode.
Sleep mode disconnects from any remote connection or
stops advertising if a connection is not established.
On Time Options:
• 1 minute
• 5 minutes
• 10 minutes
• Always on (factory default)
Bluetooth
Set On Time
Turn/Off

OPERATOR’S MANUAL
14 / BLUETOOTH mini GAC
®
2500
6010546 Rev C
Using Bluetooth has the potential to affect the battery life of
the device. Setting a time limit that Bluetooth is active and
communicating improves battery longevity.
To Adjust Bluetooth On Time Setting:
1. From the Home menu, press the Down Arrow button.
2. Scroll to “Bluetooth” and press Enter.
3. Select “Set On Time” and pressEnter.
4. Scroll to place the cursor on the desiredsetting.
5. Press the Enter button to select.
For specific Bluetooth, smartphone, tablet functionality, refer to the
Help menu in the desired mobile app.
Figure 7
Set On Time Screen
Bluetooth
Set On Time
Turn On/Off
Set On Time
1 Minute
5 Minutes
10 Minutes
Alwa
y
s On
TURN ON/OFF
Manually turns Bluetooth on and off from this screen.
TIP: Pressing the Enter key for 4 seconds at the Home screen
eliminates the need to manually step through Bluetooth Setup
screens to turn on.
To Turn On/Off Bluetooth:
1. From the Home menu, press the Down Arrow button.
2. Scroll to “Bluetooth” and press Enter.
3. Select “Turn On/Off” and press Enter.
4. Scroll to place the cursor on the desiredsetting.
5. Press the Enter button to select.

OPERATOR’S MANUAL
mini GAC
®
2500 BLUETOOTH / 15
6010546 Rev C
Figure 8
Turn On/Off Screen
Bluetooth
Set On Time
Turn On/Off
Turn On/Off
Turn On
Turn Off
PAIRING THE MINI GAC® 2500 TO A
MOBILE DEVICE
The pairing process does vary between different models and
devices. The below instructions provide general guidelines.
Pairing Steps:
1. Verify that the Bluetooth function is activated on the
smartphone / tablet.
2. Power on the mini GAC 2500.
3. Open the mini GAC 2500 mobile app on the
smartphone / tablet.
4. Activate Bluetooth on the mini GAC 2500 by pressing the
Enter key for 4 seconds. The Bluetooth logo will display on
the screen along with a “Connecting” message.
5. Select Connect in the mini GAC 2500 mobile app.
6. The serial number of the mini GAC 2500 to be connected
with will be displayed in a Grey-colored box. Press the box.
7. The connection process will begin. When it is successful,
the box will change color to Green. The display on the mini
GAC 2500 will also display “Connected”.
To View/Verify Connection:
1. From the Home menu, press the DownArrow button and
scroll to “Bluetooth”.
2. Press the Enter button.
3. Scroll to “Status” and press Enter.
4. The mini GAC 2500 shows one of the following:
– Connected
– Disconnected

OPERATOR’S MANUAL
16 / BLUETOOTH mini GAC
®
2500
6010546 Rev C
STATUS
The Status screen identifies connectivity status (connected,
disconnected, or advertising) and connection strength as:
• Very good
• Good
• Okay
• Poor
• Very Poor
• Unusable
Figure 9
Status Screen
CONNECTION EVENT SCREENS
Current state of the Bluetooth connection displays with:
• Bluetooth Connected
• Bluetooth Connecting (only after holding Enter hotkey
to start connection)
• Bluetooth Disconnected
Connection event screens appear when the specific event occurs
no matter what screen is displayed.
Figure 10
Connection Event Screen
Bluetooth
Status
Bluetooth
Bluetooth
Connecting..

OPERATOR’S MANUAL
mini GAC
®
2500 SETTINGS / 17
6010546 Rev C
SETTINGS
The mini GAC 2500 can be customized to user preferences by
changing the following control settings from the Setup menu:
• Languages
• Results - test weight and temperature
• Display
• Average buffer size
• Backlighting
• Contrast
• Units of measurement
• Automatic power down
LANGUAGES
Up to 8 languages can be supported in each version of the
mini GAC 2500 with each language conforming to its own
set of calibrations.
Languages
English Italian
French Spanish
Germany Portuguese
To change the Language setting:
1. From the Home menu, press the DownArrow button
and scroll to Setup and press Enter.
2. Press Enter to select the Language menu.
3. Press the Up or Down Arrow button to scroll
through languages.
4. Press Enter to accept the desired language.
5. Any Averages and History stored will be cleared when
the language setting is changed. Press the Enter button
to acknowledge or the On/Off/Home button to escape
and retain averages and history.

OPERATOR’S MANUAL
18/ SETTINGS mini GAC
®
2500
6010546 Rev C
Corn
History
Setup
Figure 11
Modifying Language Settings
Setup
Language
Results
Language
English US
French
German
Italian

OPERATOR’S MANUAL
mini GAC
®
2500 SETTINGS / 19
6010546 Rev C
Setup
Language
Results
Results
Test Weight
Temperature
Test Weight
Show
Hide
13.4%
56.3 lb/BU
Results
13.4%
70.5F
Corn
RESULTS
The Results menu controls the appearance of test weight and
product temperature results for each measurement on the
Test Results menu. The default is set to Show results.
To change the Results setting:
1. From the Home menu, press the DownArrow button and
scroll to Setup and press Enter.
2. Scroll and press Enter to select the Results menu.
3. Select either Test Weight orTemperature.
4. Select either Show (to display results) or Hide
(to disable results).
5. Press the Enter button to save the changed setting or
the On/Off/Home button to escape and retain the
previous setting.
Figure 12
Modifying Results Setting
or
Temperature can be
displayed or hidden
Corn
History
Setup
Test Weight
Show
Hide