1Overview

HQP-80The bubble water level gauge is suitable for environments that require continuous and accurate measurement of water level. As it does not require the construction of water level wells, it is one of the most ideal water level monitoring instruments for monitoring hydrological station water level, reservoir water level, dam pressure gauges, and upstream and downstream water levels. It has the characteristics of easy installation and maintenance, flexible operation, stable and reliable operation, and high accuracy.

Water level gauge collectionuseCore ashigh precisionPressure detection unit. Pressure measurement accuracy0.05%, with advantages such as low power consumption, corrosion resistance, radiation resistance, anti-interference, and long-term pressurization.

2、working principle

When collection is requiredair pumpworkGenerate compressed air,After entering the buffer chamber inside the water level gaugeFlowing through a dedicated airflowpipeline, enterunderwaterAir chamber,When the air pressure is greater than the water pressure, the air in the underwater chamber flows out of the chamber, achieving a balance between air pressure and water pressure.Then the air pump stops pumping, and after the pressure stabilizes, the air pressure inside the core of the water level gauge is the water pressure, which varies depending on the situationLiquid density,Convert to liquid level height.

3Product Features

◆Power supply, communication, etcThe port has lightning protection function

◆No need to build a well,The tracheal joint adopts a pagoda joint, which is convenient and reliableEasy to install, use, and maintain

◆Double stage one-way air valve, automatic constant air pressure

◆Two stage air chamber buffer There are two air chambers inside the water level gauge and at the end of the inlet pipe to buffer the instantaneous air pressure

◆Automatic fault detection Core failure, air duct blockage, air leakage, pressure timeout, high water level, low water level, power supply

Automatic detection and upload of low voltage

◆High precision core is selected for sensors

◆ Ultra low power consumption staticcurrentless than3.2mA

◆ Wide voltage 10VDC~14VDC. Customizable8-30V input

◆ Wide range 020m，0~40m optional, or other specifications

◆ Multiple communication methods standard configurationnumberquantity：485（MODBUS_RTU protocol）；simulationQuantity (optional)：4~20mA

◆ Multiple working modes pattern0Timed collection can achieve ultra-low power consumption,SettingsAir pump working interval andwork

Time ensures real-time data while minimizing power consumption to the greatest extent possible；pattern2 buttons

Or collect commands from the upper computer for easy on-site debugging

◆ Embedded clock module

◆2.5M-byte solid-state storage cansaveWith a time tagof20480 groupsData, if stored for a day2 times, can store 28

Year. Circular storage

◆Two types of software and buttonsSettings Working modeLiquid density,Collection timing, trigger interval,Time limited and stable air pump

Time, monitoring time limit, monitoring amplitude485Mailing AddressAll parameters can be obtained through software

Button settings. During the collection period, button operation is prohibited.

◆Chinese LCD display Automatically light up and display during collection; Press any key to turn on or off the display, and there is no operation when it is lit up5

Automatically shut down in seconds; No operation during the key setting processAfter 1 second, exit the settings and turn off the screen

4、maintechnical indicators

Range:0~20m，0~40m，Over 40 meters Accuracy:±0.05% FS

Resolution:1mm or 01mm，standard1mm outputinterface：standard configurationRS485(MODBUS-RTU)，optional4~20mA

power supplystandard configurationDC12 V，customizableDC8-30V2.5M-byte solid-state storage（5.3 Detailed explanation of the agreement section）

qiPipe diameter:φ8 Integrated purification function

temperature-20～70°C Storage temperature:-40～80°C

Relative humidity:95%RH air source: air

Air pressure form:2-level one-way valveAutomatic gas circuit balancing

Collection timing（1～65535divide）：pattern“0”After the last collection was completedAfter this delay, initiate a collection once

Liquid density:01000to65000(Corresponding density)0.1000～6.5000）， 一般取 1.0000

Monitoring time limit（1～1440divide）andMonitoring amplitude（0.1～10rice）After the collection is completed, the water level changes more than after each delay of this timeIf the amplitude is monitored, start one collection.The monitoring time limit must be less than the collection timing.

Working time limit of air pump: continuous working time of air pump.10～30second

Pressure stabilization time limit: Wait for the pressure to stabilize for the longest time possible.15～45

Core overload:1.5Multiple service life: greater than100Ten thousand times

Shell: Width255 * height 205 * depth 80 plastic material or 304 stainless steel

Fixed form of water level gauge: wide280 * Height 180 FourF6-hole wall mounted

5.2 Installation and commissioning of water level gauge

5.2.1、Install water level gauge

The water level gauge host can be placed flat or vertically fixed on the wallThe gas outlet of the water level gauge is connected to one end of the gas pipe, and the other end of the gas pipe is connected to the gas chamber, and ensure that the connection is well sealed. Put the gas pipe and the gas chamber into the well logging or Rivers and Lakes, and try to ensure that the gas chamber is perpendicular to the well logging or the bottom of the riverbed and effectively fixed（Be careful not to block the air outlet with mud or debris）On site installation diagramSee behind.

5.2.2、Debugging bubble water level gauge

After zeroing and installation, the water level gauge can be debugged for trial operation,In working modeIn the state of '2',By clicking the button, the bubble water level gauge can be triggered to start a measurement process, and the pumping time of the air pump is determined by the actual value of the current water level（Not exceeding the time limit of the air pump）Within half a minute after the air pump stops working（Can be set）Stable water levelThe water level gauge completes data collection and conversion once, and the current water level value can be read through the upper computer software matched with the bubble water level gaugeOther parameters.Then set the relevant parameters through buttons or upper computer software (automatic acquisition setting mode)0), the water level gauge can work automatically.