Huawei Songshan Lake Headquarters Fire Suppression Liquid Level Display

Case Description

I. Typical User Specific Requirements

Specific Requirements

User: Huawei Songshan Lake Headquarters

Requirements: The Huawei building has 3 fire water pools, each 5 meters high. Real-time water level display is required in the fire control room, simulating the water level display with high and low level alarms.

Project Key Points Analysis:

1. Three underground fire water pools, 5 meters high;
2. The fire water pool level signal needs to be transmitted 300 meters to the fire control room for display. The communication signal adopts an anti-interference design for long-distance transmission;
3. Not only real-time level display is required, but also an intuitive percentage light column to indicate the fire water pool level, and high and low level alarms are required.

II. Huawei Equipment Selection and Setting Requirements:

Equipment Selection

1	Component Structure	Built-in monitoring component: WH311 adopts the anti-interference ring module design introduced by WHSENSORS, enabling the 4-20mA signal to be transmitted 5000 meters without loss and anti-interference,
2	Accuracy	The WH311 level sensor product has passed the 0.25% verification certificate from the Shenzhen Metrology Institute, and the accuracy calibration certificate from the SGS professional testing institution. High-precision measurement has passed the quality inspection certificates of domestic and foreign third-party organizations.
3	Waterproof Performance	The WH311 probe adopts a fully welded one-piece structure design, with an IP68 protection level. Each unit will pass a 20MPa waterproof test (equivalent to 2000 meters underwater waterproof);
4	Steel Wire Cable	Signal transmission uses high-strength polyurethane steel wire cable (during the laying process, pay attention to the protection of the cable), high-precision and stable output;
5	Alarm Function	The WH6-T series intelligent fire light column level display has 4 relay switch quantity signal outputs: AHH high high-level alarm, AH high-level alarm, AL low-level alarm, and ALL low low-level alarm signal output points.
6	Display Mode Selection	The WH6-T series fire light column level display uses an intelligent light column percentage to simulate the real-time water level of the fire water pool, and displays the water level height at the bottom, making the display of the fire water pool water level more intuitive.

III. Scheme Diagram

Figure 1 Fire dedicated light column level display scheme diagram

Wanhe Instrument's solution was adopted by the user among the 8 product solutions received by Huawei. The user designed the product procurement plan by themselves, and the Shenzhen Construction General Company was responsible for the construction.

IV. Some Typical Cases

This solution has been successfully applied to
1. Shenzhen Landmark --- Ping An Finance Center
2. GAC Guangzhou factory fire and life water pool renovation project
3. Xiamen-Shenzhen Railway Tunnel Fire Center
4. Huai'an County, Zhangjiakou High-speed Railway Station
5. Information Hub Building -- Shenzhen Telecom Headquarters
6. Shenzhen Bay No. 1 Fire Water Pool Level Monitoring Project
7. Vanda Data Air Conditioning Water Cooling Level Monitoring Project
8. Shenzhen Jiahua Domain Plaza

V. Product Real Shots

VI. Product Certification

1. China Certification & Inspection Group Inspection Report
2. CE FCC Certification
3. RoHS Certification
4. SGS Third-Party Calibration Certificate
5. Shenzhen Metrology Institute 0.25-grade verification certificate