Maretron LLP FFM100 - Manual (Page 16)

FFM100 User’s Manual
Page 12 Revision 1.2
5. Channel #1 (Section 3.5)
a. Channel Enable/Disable (Section 3.5.1)
b. Engine Instance (Section 3.5.2)
c. Engine Label (Section 3.5.3)
d. K-Factor (Section 3.5.4)
e. Temperature Coefficient (Section 3.5.5)
f. Data Damping Period (Section 3.5.6)
g. Reset Total Volume Recorded (Section 3.5.7)
h. Temperature Instance (Section 3.5.8)
i. Temperature Source (Section 3.5.9)
j. Temperature Label (Section 3.5.10)
3.1 Advanced Configuration
3.1.1 Configuring Device Instance
NMEA 2000
®
provides a unique device instance for each flow measuring device on a vessel.
This value should be programmed in each FFM100 so that each FFM100 is associated with a
unique device instance number. The default instance number is 0, which is used to indicate the
first FFM100 that is hooked to the network. Subsequent FFM100s connected to the network
would be numbered 1, 2, and so on.
3.1.2 Configuring Channel #0 Installation Orientation
If you install the Channel #0 fluid flow sensor with the “FLOW” arrow on the sensors pointing in
the same direction as the fuel flow, you will not need to change this parameter from the factory
default setting. If you inadvertently install the sensor in the reverse direction, rather than
reinstalling the sensor, you may change this parameter from “Normal” to “Reverse”, and the
FFM100 will compensate for the reversed installation of the flow sensor.
3.1.3 Configuring Channel #1 Installation Orientation
If you install the Channel #1 fluid flow sensor with the “FLOW” arrow on the sensors pointing in
the same direction as the fuel flow, you will not need to change this parameter from the factory
default setting. If you inadvertently install the sensor in the reverse direction, rather than
reinstalling the sensor, you may change this parameter from “Normal” to “Reverse”, and the
FFM100 will compensate for the reversed installation of the flow sensor.
3.1.4 Configuring Channel #0 Allow Negative Flow
The M1RSP-2R-E8, M2RSP-2R-E8, and M4ARP-2-E8 fuel flow sensors are capable of
sensing flow in both directions. When this parameter is in the default state of “Yes”, the
FFM100 will report reverse flow on Channel #0 as a negative flow rate. If you do not wish to
see negative flow rates from the Channel #0 sensor, you may change this parameter to “No”.
When this parameter is set to “No”, the FFM100 will report a zero flow rate for Channel #0
when reverse flow occurs.