Mechanical Float Board Level Indicator

Mechanical Float Board Level Indicator

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Mechanical Float Board Level Indicator and board level gauge/indicator For the measurement of level of fluids at various industrial applications level indicators are used. These devices are used to determine the level of liquid in tanks, drums. Pressure vessels etc.

For needs of different applications there are many level indicators to suit the purpose. In highly commercial industries normally, fluids are used in many forms. In absence of proper devices, it will be very difficult to find the quantity and level of fluid stored in a vessel/container etc. In many situations where the nature of fluid is dangerous or sometimes the place it is manually impossible to find the level in which the liquid is stored because the nature of the material, then the level indicators are of utmost importance.

Total depth of vessel	≤25m (Locally indicate can add two-wire remote transmitter)
Power supply	24VDC, output 4-20mA
Top	double flange + guide pipe + elbow slide wheel(2 ball steel wire connected counterweigh buoyancy)
Bottom	double flange + chock
Top installed with flange	ANSI, DIN, JIS, HG, GB
Float Wire Rope	2.5mm diameter
Medium density	>0.4g/cm³
Medium temp.	-20℃~350 ℃
Float material	SUS304, SS316,PP
Flange and pipe and Guiding Rope	SUS304, SS316,PP

Technical Features:
1. Simple and robust design.
2. Pressure and gas proof separation of chamber and display.
3. Measuring and indication of the level of aggressive, combustible, toxic, hot agitated and contaminated.
4. Magnetic Follower display without external power.
5. Available for applications in all areas of industry through use of highly corrosion resistant materials.
6. Designs for a Temperature range from 100C to 450ºC.
7. Food industry design.
8. Interface measurement.

Product installation diagram

Mechanical Float Board Level Indicator (Mechanical Tank Water Level Indicator)

Working Principle

A stainless steel float inside the tank rises and falls following liquid level changes. The mechanical linkage transfers motion out of the tank, driving the indicator slider to move along the graduated scale, directly showing real-time liquid level height.

Core Features

1. No power supply requiredFully mechanical structure, works normally during power outages, ideal for unattended outdoor tanks, fuel depots and water storage facilities.
2. Simple & reliable structureFew vulnerable parts, strong anti-electromagnetic interference, not affected by medium conductivity, dust or steam.
3. Intuitive on-site readingClear percentage scale, operators can check level data directly from a distance.
4. Wide medium adaptabilityFits water, diesel, heavy oil and other neutral liquid media; stainless steel float option for mildly corrosive fluids.
5. Easy installation & maintenanceMount via tank top/side flange, convenient to inspect and replace parts without complex calibration.

Main Application Scenarios

• Above-ground diesel, gasoline storage tanks
• Industrial water tanks, fire water pools, circulating water buffer tanks
• Small chemical medium storage vessels, heating system expansion tanks

Limitations

• Only local display, no standard remote signal output by default
• Not suitable for highly viscous, easily crystallized media that may block float movement
• Measurement accuracy will drop under severe tank vibration conditions

Installation Steps

1. Mount the flange assembly firmly on the top or side reserved opening of the tank, ensure sealing to avoid leakage.
2. Lower the float body into the tank interior, connect and fix the external connecting pipe and rocker arm linkage structure.
3. Install the graduated scale vertically on the outer tank wall, adjust the indicator slider to align with the actual initial liquid level.
4. Check that the rocker linkage moves flexibly without jamming, verify the slider can follow float lifting and dropping smoothly.
5. Tighten all fasteners, do a liquid level rise/fall test to confirm scale reading matches real tank level.