To address the issue of inaccurate water level monitoring in pools, the WH311 liquid level display device for fire ponds is recommended

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Detailed Explanation of WH311 Fire Tank Water Level Display Device I. Basic Definition and Functions The WH311 fire tank water level display device is a specialized intelligent system used for monitoring the water level in fire tanks. It can display the water level in real time, provide alerts when the level is too high or too low, and enable automatic control; it is an essential component in fire protection systems. Core functions: Real-time water level monitoring: Accurately displays the water level in the fire tank, with precision down to the centimeter level. High/low water level alarms: Automatically triggers audio and visual alerts when the water level is abnormal, serving as a reminder for managers. Remote monitoring: Signals can be transmitted to the fire control room, enabling simultaneous display in two locations. Automatic control: Can operate pumps and valves to facilitate automatic water filling and drainage. 2. Working principle: Static pressure measurement principle: Based on the principles of fluid statics, the pressure of a liquid is proportional to its depth. The high-precision pressure sensor inside the WH311 probe detects water pressure, which is then converted by an intelligent chip into a 4-20mA standard current signal or an RS485 digital signal, and transmitted via cable to the WH6 display instrument. The display gauge converts the signal into water level values and a light bar indication. III. Technical Parameters and Features
Technical parameters:
Measurement range: 0–10 m/100 m/1000 m (optional)
Measurement accuracy: ±0.25% FS (annual stability)
Operating voltage: 24 VDC (transmitter)/220 VAC (display instrument)
Output signal: 4–20 mA standard current/RS485 communication
Protection rating: IP68 (waterproof up to 2000 meters underwater)
Material: 304 stainless steel body + 316L stainless steel diaphragm (titanium alloy available as an option)

Key features:
Dual display function: Displays water level both on-site and in the fire control room, meeting fire safety regulations.
Remote transmission: Supports wired (shielded cable) and wireless (LoRa module) transmission, with a coverage range of up to 5000 meters.
Intelligent control: Allows presetting of high and low water levels; enables automatic start/stop of pumps for unattended operation.
Intuitive display: Digital display accurate to the centimeter, with a light bar indicating water level changes for easy reading.
Safe and reliable: Fully sealed design that provides corrosion resistance and protection against lightning strikes, making it suitable for harsh environments.

IV. Installation and Application Scenarios
Installation method:
Probe installation: Placed directly at the bottom of the water tank or fixed using M20×1.5 threads/DN50 flanges.
Display instrument: Installed in the fire control room or duty room; can be integrated into the fire control panel.
Wiring: A 2×1.5 mm² shielded cable is used to connect the probe and the display instrument.

Typical application scenarios:
Fire water tanks in high-rise buildings
Fire protection systems in commercial complexes
Large public buildings such as stadiums and exhibition centers
Fire water tanks in industrial plants
Municipal fire water tanks and water towers

The WH311 fire water tank level display device is an intelligent system that combines measurement, display, control, and alarm functions. It monitors the water level in fire water tanks using the hydrostatic principle, meeting the requirements of fire safety regulations regarding water level display and alarms. It is an important part of modern fire safety systems. Its dual-display function, remote monitoring, and automatic control features not only enhance the reliability of the fire protection system but also greatly simplify fire management tasks, ensuring that the fire water tanks can perform their intended functions.