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McFarlane Aviation Family
Rochester Sensors
Rochester Sensors, LLC is a global manufacturer of liquid level measurement and sensor technologies, headquartered in Coppell, Texas, with facilities in North America, Europe, and Asia. The company designs and produces gauges, sensors, senders, switches, and instrumentation for monitoring fuels, lubricants, chemicals, refrigerants, and other mission-critical fluids.
Its technologies serve a wide range of industries, including propane, construction, agriculture, automotive, marine, aviation, power generation, lawn and garden, and electric vehicles. Rochester’s innovations support applications from bulk fuel monitoring and remote tank management to aircraft engine instrumentation and temperature, pressure, and flow sensing.
Rochester 7740 Series Fuel Sender Gauge
Precision Fuel Quantity Transmitter from Rochester
Designed to deliver accurate, reliable fuel level readings for aircraft fuel tanks. Built to the robust standards of Rochester Sensors, this unit features a float-operated mechanism that converts fuel level into an electrical signal, ensuring dependable compatibility with matched cockpit fuel gauges.
| Fuel Sender P/Ns | Stem | Float | Ohms |
|---|---|---|---|
0500 |
0675 |
2-4ohms @ E, 40-52ohms @ F |
|
0493 |
0625 |
0-0.5ohms @ half stop, 30ohms at F |
|
0525 |
0668 |
0-0.5ohms @ half stop, 31ohms at F |
|
0175 |
0475 |
2-4ohms @ E, 40-52ohms @ F |
|
0500 |
0693 |
0.05ohms @ E, 45ohms @ F |
|
0175 |
0618 |
0.05ohms @ E, 45ohms @ F |
|
0175 |
1462 |
2-4ohms @ E, 40-52ohms @ F |
Rochester Oil Temperature Gauge
Mount in 2-1/16" diameter hole.
Furnished with one 5/8-18UNF X 5/8-18UNF adapter nut.
| Part Number | Temperature Range | Cap Length |
|---|---|---|
100-250°F |
60” |
|
100-250°F |
72” |
|
100-250°F |
144” |
|
100-250°F |
48” |
Rochester Replacement Float
Replacement fuel float for mechanical fuel gauges.
P/N 0006-00540
Replace worn-out cork floats! Designed to replace original cork floats that have become saturated and inaccurate over time.
Material: Nitrile Rubber
Dimensions:
- OD: 1-1/4 (1-1/2” long from end to end)
- ID: 0.165
Rochester Adapter Nuts
Rochester oil temperature gauge adapter nuts.
P/N 0044-00572
5/8-18 UNF x 5/8-18 UNF
1” hex
Note: 0044-00572 is plated.
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