23-10-2014, 03:05 PM
The Odyssey gauge
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Introduction:
he Odyssey gauge series from Dakota Digital, Inc. incorporates the
reliability and quality of our standard gauges, along with several unique features
and easy mounting. These features include:
• A warning feature that flashes the gauge readout when outside operating
limits.
• A connection for an external warning indicator that is activated when the
gauge flashes.
• User adjustable to read %full or gallons remaining.
• User adjustable for GM, Ford, VDO, or Stewart Warner senders.
• Microprocessor stabilized readings.
• Quick-Start feature to provide accurate readings quickly after being powered
up.
• Night dimming with lens label lighting.
• High Visibility VFD display for sunlight readability.
The fuel level gauge will read the amount of fuel remaining in the fuel tank.
It has the ability to work with the following senders or other types that match the
empty and full resistances:
Sender type empty resistance full resistance .
GM 0-90 0 ohms 90 ohms
Ford 73 ohms 10 ohms
VDO 10 ohms 180 ohms
Stewart Warner/Sun 240 ohms 33 ohms
The fuel gauge can be set to either read % full (00=empty, 50=half,
100=full) or gallons remaining. The range for displaying gallons is from 8.1 to
39.3. The gauge has a preset warning level that flashes the display when the
fuel level is below 10% or the equivalent number of gallons.
Operation:
The gauge needs only the red and black wires connected to light up. The
gray wire connects to the sender. If the gray wire is not connected, the display
will show “EE”. If the gray wire is shorted to ground, the display will show “--”.
When the blue wire has 12 volts, it will dim the display for night viewing. The
yellow wire will provide a ground output when the gauge reading is outside the
warning limits.
Setting the sender type:
The fuel gauge can work with GM, Ford, VDO, or Stewart Warner
senders, but it needs to be told which one is connected. Once this has been set,
it is stored internally so that the gauge will retain the information even when the
gauge does not have any power. This can be set and reset as many times as
desired. The procedure for setting the sender type is as follows:
1. Make sure the key is off so the gauge is not powered.
2. Press and hold the ‘SET’ button. This is located behind the hole located on
the back side of the gauge as shown in figure 1.
3. Turn the key on while the ‘SET’ button is being held.
4. Release the button. The gauge should show ‘[]’ and then switch to one of
four letters. “S” for Stewart Warner, “g” for GM 0-90, “F” for Ford, or “O” for
VDO.
5. Turn the warning adjustment pot until the desired sender letter is showing.
The adjustment will then 3/4 rotation from stop to stop. Do not force it past
either stop.
6. Press and release the ‘SET’ button. The gauge should show ‘--’. The new
sender type is now stored.
7. Turn the key off. The gauge will now operate normally when powered up
again.
8. Turn the warning adjustment pot fully clockwise. This will set the gauge to
read % full. Refer to the next section to set it to read gallons.
Using external warning indicators:
The yellow wire provides a ground trigger whenever the gauge is outside
its set limits. Low current indicators (less than 1/4 A) can be activated directly by
connecting their power wire to 12 volts and connecting their ground wire to the
yellow output wire. Many gauges can share the same indicator by connecting
their yellow warning wires together. In this way, when any one or more gauges
are outside their limits the warning indicator will be activated.
For higher current buzzers or lights, a relay will need to be used to switch
the indicator on. Dakota Digital’s RLY-1 30A relay may be used for this. One of
the coil wires should be connected to 12 volts and the other coil wire connected
to the yellow warning wire. When the gauge is outside its limits, the relay will
turn on. The relay contact wires can be used to switch the higher current.