The LD float continuous level gauge operates by utilizing a magnetic float inside the float to alter the resistance within the main rod, which is combined with a reed switch to form a voltage divider circuit. This change is thereby converted into a voltage divider signal. The voltage divider signal can then be transformed by the level gauge into standard industrial signals such as 4-20mA for level detection. A smaller gap in the reed switch results in higher measurement accuracy. This level gauge can also be used in conjunction with other secondary instruments for remote indication, making it a level indicator with a simple principle and excellent reliability.

During the selection process, users follow a five-step procedure outlined in the selection chart. As the LD float continuous level gauge is a custom-made product, we have systematically compiled specifications for various flanges, threads, brackets, float dimensions, junction boxes, and material properties to assist users in making accurate selections. Users can choose the appropriate options in the corresponding selection table.

When selecting a float ball based on the characteristics of the liquid being measured (such as operating temperature, pressure, specific gravity, acidity/alkalinity, etc.), users should choose the corresponding specifications from the float ball selection table.

1)Temperature:

PVC: Maximum operating temperature of 80°C

PP: Maximum operating temperature of 80°C

PVDF: Maximum operating temperature of 150°C

SUS304/316L: Maximum operating temperature of 200°C

2)Pressure:

Plastic float balls (e.g., PVC, PP, PVDF): Maximum pressure resistance of 5 kg/cm²

SUS304/316L float balls: Maximum pressure resistance of 40 kg/cm²

3)Viscosity:

For viscous liquids, it is recommended to select float balls with a larger diameter and lower specific gravity to overcome surface tension.

4)Acidity/Alkalinity:

Polypropylene (PP): Suitable for strong acidic/alkaline environments.

PVDF: Required for strong acidic/alkaline environments with temperatures above 80°C .

5)Alcohol/Oil Applications:

Stainless steel (SUS): Recommended for alcohol or oil-based liquids.

Food industry: Food-grade SUS316L (meeting hygiene standards) is required.

6)Specific Gravity (S.G.):

The specific gravity (S.G.) of the float ball must be less than the specific gravity of the measured liquid; otherwise, the float ball will not float .

1)Material Compatibility

Plastic Materials :PP (Polypropylene), PVC (Polyvinyl Chloride), NBR (Nitrile Butadiene Rubber), PVDF (Polyvinylidene Fluoride).Suitable for strong acidic/alkaline environments .

Metal Materials :SUS304/SUS316L Stainless Steel.Applicable for high-temperature (200°C) and high-pressure (64 kg/cm²) environments .

2)Float Dimensions:

Metal Floats :Available in diameters of Φ45 mm, Φ52 mm, Φ75 mm .

Plastic Floats :Available in diameters of Φ48 mm, Φ55 mm .Specific gravity (S.G.) ranges from 0.5–0.8 g/cm³ .

3)Electrical Output:

Output Signal :Two-wire 4–20 mA or three-wire resistive output .

Supply Voltage :5–30 VDC .

4)Junction Box:

Materials :Stainless Steel, Aluminum Alloy, PC (Polycarbonate), PP (Polypropylene) .

Connection Types :Threaded types : PT, PF, NPT.

Flange types : JIS, DIN, ANSI (customizable to specifications).

5)Protection Rating :

IP65 for wiring or junction box.

6)Customization:

Special specifications (e.g., non-standard dimensions, materials, or configurations) can be customized upon customer request .