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Will the XLS-1 detect foam or condensation?

No, the sensor is designed to ignore the foam and condensation.

What is the function of the XLS-1?

It is an ultrasonic point level sensor for applications such as generators, water tanks, radiators, printers, and other industrial applications. It is compatible with water-based and hydrocarbon based liquids, and perfect for applications where condensation may affect other sensing technologies. The gap area detects the presence or absence of the liquid medium and actuates a solid state switched output.

What is meant by "CMOS/TTL logic?"

TTL stands for Transistor-Transitor Logic and is considered a logic family. A logic family is a collection of different IC chips that have similar input, output and internal circuit characteristics, but that perform different logic functions. CMOS, which stands for Complementary Metal-Oxide Semiconductor, is another type of transistor logic family that has become more popular than TTL in recent years thanks to higher speed and lower power consumption (e.g. the 0.5 mA associated with the CLS-1200's 5 VDC output option is sufficient to drive only one TTL logic gate versus ten CMOS gates). The majority of today's large-scale ICs, such as microprocessors, use CMOS.

What is the life expectancy of a reed switch?

A reed switch is extremely rugged and designed to operate reliably for many years, under ideal conditions, up to about 2 million cycles. To achieve maximum service life, reed switches benefit from protected electrical supply.

Why does the LS-3 Micro have a special fluted stem design?

The special fluted stem design, coupled with lighter magnets and bumps on the float, reduces the likeliness of sticking and improves the buoyancy, reliability and performance of the sensor.

What is the best position to mount the LS-3 Micro?

The sensor can be mounted tank top or tank bottom mounted vertically, with lead wires up or down.

What is the signal output logic for the XLS-1?

Open collector, Sinking NPN or Sourcing PNP output, 5-28 VDC, 30mA max.

Does Gems offer a mating connector?

Yes, we can offer a mate to the DT04-P3 connector. It can be used on the XLS-1 and also CAP-300 model type. Example Gems part number 248404, TPU Cable, 1 meter long. Longer leads are available on request. A minimum purchase is required.

When would recalibration be necessary for CAP sensors?

Changes in Sensor or bottle position, bottle wall thickness, or fluid dielectric fluctuations can impair capacitance sensor performance and recalibration becomes necessary.

If the composition of the coolant changes overtime, will the CAP-300 have to be recalibrated?

Recalibration will not be necessary if the coolant changes, the sensor will continue to operate.

What is the accuracy of a reed switch?

The design of the reed switch provides consistent accuracy of +/- 1/16".

Is there a minimum current flow requirement for a standard 20VA reed switch?

Yes, very low currents (< 5ma) can prevent “cleaning” of the contacts or not have enough energy to maintain low contact resistance. 5ma is likely a good minimum for our standard 20 VA switch. But you also want enough voltage. Approximately, 5V, 5ma is a good minimum. For low current switching we recommend a 10 VA reed switch which can better handle lower loads. (1ma for example).

Does the XLS-1 have circuit protection?

Reverse voltage: up to 28VDC for 30 minutes. Over voltage: up to 40VDC for 30 minutes.

What is the best way to position the CAP Sensor and can it be mounted on the bottom of the tank?

Mounting the CAP sensor on the side of the tank is the best way to detect media level. Mounting on the bottom of the tank may give undesirable results and should be thoroughly tested as it is difficult to sense a thickness of the media. A slight film or droplets of media on the bottom surface of the tank may trigger the CAP. The set point can be tricky.

What is the longest probe I can get?

At this time, the probe length is fixed. For qualified OEM volume contact factory.

What does SPST or SPDT switch mean?

SPST (single pole single throw) switch comes wired only one way, either normally open or normally closed. This is the best choice for OEM applications. It insures that it can only be wired one way. SPDT (single pole double throw) switch comes wired for both normally open and normally closed. Customers like this option when prototyping and unsure of the end requirement.

Will the shroud discolor in sunlight?

The polycarbonate shroud is impervious to sunlight and will not discolor.

Will different liquid media affect the time delay for optic sensors?

If the viscosity is similar, the time delay should be the same for different media.

How is this product different from what Gems offers today?

No moving parts Can handle liquid dielectric as low as 1.4 Self-configures to media dielectric constant HART protocol comes standard with the 4-20 mA Output

What size cable should I use to wire a two wire level transmitter back to a relay controller?

Generally, 18-gauge cable should be sufficient for distances of up to 1000 feet. Shielded cable is recommended, especially in areas with high amounts of electrical noise. The entire loop resistance should not exceed 900 ohms.
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