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.

在选择过程中，用户遵循选择图表中概述的五个步骤。由于LD浮筒连续液位计是定制产品，我们系统地编制了各种法兰、螺纹、支架、浮筒尺寸、接线盒和材料特性的规格，以帮助用户做出准确的选择。用户可以在相应的选择表中选择合适的选项。

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 Φ 45 mm, Φ 52 mm, Φ 75 mm.

Plastic Floats : Available in diameters of Φ 48 mm, Φ 55 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.