The PPE UFS (Universal Fluid Sensor) line of sensor kits use an infrared (IR) emitter and detector and microprocessor to detect the presence of air in tanks or lines containing non-particulate bearing liquids such as fuel, water, hydraulic fluid and so on. It was designed to provide a warning of a low fuel (or other liquids) condition.
To see how the UFS line of sensors work, check the FAQs.
The PPE UFS line of sensors have three outputs: a 0 to +V "flashing" output that can be used with PPE's IND Alarm Indicator or the POPO indicator, a pull-to-ground output that can be connected to annunciators or other indicating devices, and a "logic-level" output that can be used with logic circuits. The UFS sensors also feature a built-in test capability. When the PTT line is activated, a small additional current is sent to the IR emitter, forcing an "air" signal to be detected and indicated on the indicator. This is a true end-to-end test of the sensing system, not just a test of the light bulb as most press-to-test circuits provide. The UFS sensors also have an "acknowledge" feature; if the PTT line is momentarily given power, the alarm is cleared until the UFS sensor is power-cycled. The "acknowledge" feature allows an alarm to be indicated and then cleared by the operator to avoid a constant alarm indication.
The UFS-AN kit has application for header tanks in airplanes, boats, recreational vehicles and so on. It can also be applied to pesticide and aerial spraying applications and others where it is important to detect the presence of air.
The UFS-AN is installed in the tank at the level where the alert or warning is required. (The UFS-AN has a 1/4" male NPT thread.) The UFS-AN is then wired to one of the indicators available.
The PPE UFS-T is identical to the UFS-AN except it is designed to be installed into a line, preferably at, or near, the inlet of the pump.
FYI - For those who are replacing one of the older Pillar Point Avionics UFS-Ts:
We have increased the size of the ports on the UFS-T. They are 1/4" NPT instead of 1/8" NPT. We have also increased the overall size of the fitting to allow for two holes that can be used for mounting.
If either sensor is used with an IND indicator you get a flashing LED indication when the sensor sees "air". The momentary switch in the IND is used for the PTT and ACK features described above.
If either sensor is used with a POPO switch, they are designed to allow you to control your fuel transfer pump and to alert you when the auxiliary tank or line is empty or (nearly empty) so you don't run the pump "dry" after transfer.
Both the pump and wires from the sensor are wired to the POPO switch. To start a transfer, the operator presses the POPO switch. This starts the transfer pumps and powers the sensor. When the sensor detects "air", it flashes the LED in the POPO switch, telling the operator to press the POPO again to stop the transfer.
The POPO and sensor can be wired to provide a steady light when the pump is on and a flashing light when "air" is detected. Alternately, it can be wired so that the LED remains dark during transfer and flashes only when "air" is detected.
Note: If you are using the POPO switch as an indicator for either the UFS-AN or the UFS-T, you will need to provide a separate momentary switch to be able to use the PTT and Acknowledge features.
All hardware necessary to install the indicator and sensor is provided with the kit. Only wire and a few hand tools are required for installation.
Complete wiring instructions are available on the downloads page.
|Description||SKU #||Price||Click to Purchase|
|1 each IND-12 volt/UFS-AN Kit||1IND12AN||$160.00 ea|
|1 each IND-24 volt/UFS-AN Kit||1IND24AN||$160.00 ea|
|1 each IND-12 volt/UFS-T Kit||1IND12T||$180.00 ea|
|1 each IND-24 volt/UFS-T Kit||1IND24T||$180.00 ea|
|1 each POPO-12 volt/UFS-AN Kit||1POPO12AN||$160.00 ea|
|1 each POPO-24 volt/UFS-AN Kit||1POPO24AN||$160.00 ea|
|1 each POPO-12 volt/UFS-T Kit||1POPO12T||$180.00 ea|
|1 each POPO-24 volt/UFS-T Kit||1POPO24T||$180.00 ea|
|2 each IND-12 volt/UFS-AN Kit||2IND12AN||$300.00 ea|
|2 each IND-24 volt/UFS-AN Kit||2IND24AN||$300.00 ea|
|2 each IND-12 volt/UFS-T Kit||2IND12T||$340.00 ea|
|2 each IND-24 volt/UFS-T Kit||2IND24T||$340.00 ea|
|2 each POPO-12 volt/UFS-AN Kit||2POPO12AN||$300.00 ea|
|2 each POPO-24 volt/UFS-AN Kit||2POPO24AN||$300.00 ea|
|2 each POPO-12 volt/UFS-T Kit||2POPO12T||$340.00 ea|
|2 each POPO-24 volt/UFS-T Kit||2POPO24T||$340.00 ea|
|Custom Legend (specify) [3 lines, 4-characters each line, max]||LEG||$25.00|
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