Installation guide for manhole flowmeter

Preparation before installation

1. Equipment and tool preparation

-Prepare a portable handheld terminal (which can be provided by the sensor manufacturer or terminal manufacturer), connect it to a FLOW METER to determine if it is working properly, and determine the correct installation direction based on the flow rate.

-Check whether the appearance of the sensor and terminal is good, and whether there is any change in the sealing condition.

2. Precautions for lifting and placing equipment

Notify the construction personnel to use the host to lift the ear and place the equipment, and not to directly pull the data cable and antenna to prevent damage.

Equipment installation

1. Host installation

The two expansion screws of the host need to be fully fixed.

2. Antenna installation

Using -85 decibels as the signal strength standard, the antenna is installed underground when the signal is weak (below -85 decibels), and directly fixed near the underground terminal when the signal is good (not below -85 decibels).

3. Installation of breathing valve

The sensor breathing valve is located at the end joint, and the breathing valve at the interface should be fixed as high as possible to extend the service life of the equipment and benefit the entire set of equipment.

Test after installation

1. Use a portable handheld terminal to test whether the device readings are normal.

2. After covering the manhole cover, test the signal strength, preferably around -85 decibels, while observing the upload of backend data.

3. Check whether the data measurement and transmission are normal through the APP or WeChat mini program.

Instructions for Flow Measurement System

1. Division of labor

-Sensors are responsible for measuring flow velocity and water level signals.

-The terminal completes algorithm calculations, including the calculation of pipeline diameter, water flow cross-section and flow rate, as well as environmental parameter settings.

2. Parameter setting method

Parameter settings can be remotely modified on the terminal without the need for sensor settings. On site installation personnel only need to collect the diameter size of the pipeline and the height of the equipment from the bottom of the water (installation height) at the sensor installation location, organize it, and send it to the telemetry terminal manufacturer for remote unified setting, which is convenient and fast, without the need for on-site equipment calibration.