TC-A690 portable open channel flowmeter

1、 Related requirements

In order to implement the Environmental Protection Law of the People's Republic of China and the Water Pollution Prevention and Control Law of the People's Republic of China, protect the ecological environment, and safeguard human healthOn December 24, 2019, the "HJ/T15-2019 Technical Specifications for Installation of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)" and《HJ 353-2019 Technical Specification for Installation of Online Monitoring System for Water Pollution Sources (CODCr, NH3-N, etc.)《HJ 354-2019 Technical Specifications for Acceptance of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.), HJ355-2019 Technical Specifications for Operation of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)《HJ/T 92-2002 Technical Specification for Monitoring Total Discharge of Water PollutantsIn the "Installation Technical Specification", it is proposed that a flow monitoring unit is required in the composition of the online monitoring system. For the discharge units that need to measure flow, standardized measuring weirs (troughs) should be built for open channels, and the construction of weirs should be able to compare open channel flow meters. Triangular weirs, rectangular weirs, and Bacher troughs are recommended. In the "Acceptance Technical Specification", specific requirements are proposed for the acceptance method of water pollution source flow monitoring units, which are divided into liquid level error comparison and flow error comparison, as follows:

1. Liquid level error comparison: Use a portable open channel flow meter comparison device (liquid level measurement accuracy ≤ 0.1mm) and an ultrasonic open channel flow meter to measure the liquid level value at the same water level observation section, conduct a comparison test, record the data pairs every 2 minutes for 6 consecutive times, calculate the error value Hi of each data pair, and select Hi as the liquid level comparison error of the flow meter.
2. Flow Error Comparison: Use a portable open channel flow meter comparison device and an ultrasonic open channel flow meter to measure the instantaneous flow at the same water level observation section for comparison experiments. After the data is stable, start timing for 10 minutes. Read the cumulative flow F1 of the open channel flow comparison device and the cumulative flow F2 of the ultrasonic open channel flow meter during this period, and calculate the flow comparison error Δ F according to the formula.

2、 Instrument Introduction

The TC-A690 portable open channel flowmeter is a portable measuring instrument designed for flow rate/flow measurement in industries such as hydrological monitoring, agricultural irrigation, river flow monitoring, industrial wastewater, municipal water supply and drainage, and water resources management. This flowmeter adopts a special ultra low power consumption design scheme and full digital signal processing technology, making the instrument measurement more stable and reliable, with high measurement accuracy. It can be widely used in hydrological, water conservancy, agricultural irrigation, water supply and drainage and other situations that require frequent mobile measurement and no power supply on site.

The TC-A690 portable open channel flowmeter is installed in accordance with the "HJ 353-2019 Technical Specifications for Installation of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)", "HJ 354-2019 Technical Specifications for Acceptance of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)", "HJ355-2019 Technical Specifications for Operation of Online Monitoring Systems for Water Pollution Sources (CODCr, NH3-N, etc.)", and "HJ/T 92-2002 Technical Specifications for Monitoring Total Water Pollutant Emissions"Designed according to the requirements,passThe TC-A690 portable flowmeter performs on-site comparison tasks easily and quickly, and users only need to input on-site data.

threeInstrument features

(1) Adapt totenBasic Weir Types: Triangle Weir, Rectangular Weir, Equal Width Weir, Bacher TroughRectangular wide top weir, circular edge wide top weir, trapezoidal thin-walled weir, none Throat groove, triangular profile weir, flatV-shaped weir;

(2) High precision signal acquisition module, 24 bit acquisition accuracy, measurement data is true and effective;

(3) Large screen color LCD touch screen, touch guided operation, easy operation process;

(4)Real time measurement of environmental atmospheric pressure and temperature;

(5) A friendly human-computer interaction interface, combining graphics and text, allowing for instrument operation without the need for professional knowledge;

(6) The instrument is equipped with a micro printer, which can directly print measurement data on site;

(7) The data can be directly exported to a USB drive for users to perform statistical analysis on the data;

(8) Can be stored20000 measurement history records;

(9) Equipped with a large capacity lithium battery, it can measure continuously for 90 hours on a single charge;

(10) The flowmeter is equipped with an intelligent power management system, which extends the battery life;

(11) Handheld box design, lightweight and convenient for users to carry, with a waterproof rating of IP65.

(12) Can set a startup password to effectively protect data security;

fourTechnical parameters

Flow measurement range:0~40m3/S；

Flow measurement frequency:3 times per second;

Liquid level resolution:0.1mm；

Liquid level measurement error:≤1mm；

Flow measurement error:≤±1%；

Signal output mode:USB；

Working environment humidity:≤ 85%；

Working environment temperature:—10℃~＋50℃；

Power supplyAC 220V ±15%；

Built in battery:DC 12V， Lithium battery Battery powered continuous working time: 90 hours;

Overall dimensions:280mm×230mm×120mm；

Total weight of the machine2.1Kg。

6、 Instrument configuration

host1TaiwanTripod stand1, 1 ultrasonic sensorextension cord1 pieceportable bag1, 1 power adapter1 USB flash drive1 2m tape measure, 1 instruction manual, 1 certificate of conformity and warranty card