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3.3.2 Configuring Pressure at 4mA
Program this parameter to match the pressure reading of the pressure transducer when it is sourcing a current of 4mA. You can determine this value by examining the specification of the pressure transducer being used.
3.3.3 Configuring Pressure at 20mA
Program this parameter to match the pressure reading of the pressure transducer when it is sourcing a current of 20mA. You can determine this value by examining the specification of the pressure transducer being used.
3.3.4 Configuring Tank Capacity
In addition to indicating the fluid level within a tank, the FPM100 also has the ability to be configured or programmed with the attached tank’s capacity. This way, you will be able to view the tank’s capacity as well as the amount of liquid remaining anywhere on the vessel where there is an NMEA 2000® compatible display. It is not required, but you can enter the FPM100 tank capacity using a display product such as the Maretron DSM250. Refer to the user’s manual of the particular product that will be used for configuring the FPM100 as these manuals provide detailed instruction on configuration procedures.
3.3.5 Tank Levels Calibration
The FPM100 can be easily programmed for use with tanks of rectangular
3.3.5.1 Rectangular Tank
3.3.5.1.1 Empty Tank Depth
This field should be programmed with the depth of the liquid column above the pressure transducer when the tank is empty. If the transducer is installed directly in the tank, then this value will normally be programmed to 0”. If the transducer is actually installed below the level of the tank bottom, then this value should be programmed to the vertical distance between the tank bottom and the pressure port on the pressure transducer.
3.3.5.1.2 Full Tank Depth
This field should be programmed with the depth of the liquid column above the pressure transducer when the tank is full.
Please refer to Figure 8 below for an illustration of Full Tank Depth and Empty Tank Depth parameters.
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