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FFM100 User’s Manual
Page 8 Revision 1.2
1.6.7 Choosing a Fluid Flow Sensor Mounting Location
Choosing a proper mounting location for fluid flow sensors is critical to obtaining accurate tank
level measurements. Because of the positive displacement design of the FFM100 sensors, no
pulse dampening or flow straightening is necessary. The installation instructions packaged with
each fuel flow sensor contain details on choosing a mounting location and installation. The
ideal location for the supply fuel flow sensor is immediately after the fuel filter.
NOTE: Maretron fuel flow sensors have anti-tamper blue silicone on one or more of the
screws that hold the body of the sensor together. Do not remove these screws.
Removing these screws will void the warranty on the sensor.
2 Installation
2.1 Unpacking the Box
When unpacking the box containing the Maretron FFM100, you should find the following items:
• 1 – FFM100 Fuel Flow Monitor
• 1 – Parts Bag containing 4 Stainless Steel Mounting Screws
• 1 – FFM100 User’s Manual
• 1 – Warranty Registration Card
If any of these items are missing or damaged, please contact Maretron.
2.2 Choosing a Mounting Location
Please consider the following when choosing a mounting location.
1. The FFM100 is waterproof, so it can be mounted in a damp or dry location.
2. The orientation is not important, so the FFM100 can be mounted on a horizontal deck,
vertical bulkhead, or upside down if desired.
3. The FFM100 is temperature-rated to 55°C (130°F), so it should be mounted away from
engines or engine rooms where the operating temperature exceeds the specified limit.