Herrett radar flowmeter DDM-RF1550

NegotiableUpdate on 05/06

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Overview

Herrett Radar Flow Meter DDM-RF1550 Product Overview: The $r $nDDM-RF1550 series radar flow meter is mainly composed of a radar flow meter and a radar water level meter. The flow meter is used to collect the surface flow velocity of the fluid, and the average flow velocity of the cross section is calculated through a model. Combined with the water level and section information measured by the water level meter, the cross section area of the cross section is calculated, and the formula flow rate=average flow velocity #215; Overflow cross-sectional area #215; The correction coefficient is used to obtain the flow rate, which is calculated based on the standard value obtained from the actual measurement environment.

Product Details

Oh, my God.radarFlow meterDDM-RF1550Product Overview:

DDM-RF1550Series radarflow velocitytrafficceremonyIt mainly consists of a radar flowmeter and a radar water level gauge. The flowmeter is used to collect the surface flow velocity of the fluid, and the average flow velocity of the cross section is calculated through a model. Combined with the water level and section information measured by the water level gauge, the cross section area of the cross section is calculated, and then the formula flow rate is used=average flow velocity×Cross-sectional area of overcurrent×The correction coefficient is used to obtain the flow rate, which is calculated based on the standard value obtained from the actual measurement environment.

1.1 Functional Features

DDM-RF1550High precision seriesradarflow velocitytrafficceremonyNon contact installation design, compact size and structure. High precision, low power consumption, strong anti-interference ability, suitable for water level monitoring of lakes, rivers, flash floods, reservoirs, sewage pipelines, etc.

Oh, my God.radarflow velocitytrafficceremonyDDM-RF1550Technical parameters:

power supply voltage	10-16V
Current（12VPower supply)	Less than during normal operation150mADuring sleep, it is less than1mA
Operating Temperature	-40°～85°
waterproof rating	IP68
transmission frequency	24.000 ～24.250GHz
communication interface	RS-485
communication protocol	MODBUS-RTU
measuring range	0.1~40m
measurement accuracy	±2mm
resolution	1mm
Startup time	10s
Speed measurement range	0.1-20m/s
Accuracy of flow velocity measurement	±0.01 m/s
Flow velocity resolution	0.01 m/s
Flow direction recognition	Bidirectional automatic recognition, configurable filtering, default forward direction
Flow velocity measurement time	1 time/s
Antenna style	Current Speed:14 x 32゜ Water level:14 x 10゜
Flow meter size (length)xwidexHigh)	200×120×90mm
Bracket size (length)xwidexHigh)	100×100×55mm
weight	flow meter+Bracket:2.15kg
housing material	Galvanized and stainless steel plates

DDM-RF1550Radar flowmeterOn site installation:

DDM-RF1550seriesradarflow velocitytrafficceremonyThe precautions during installation are as follows.

1. Install flow meters, water level gauges, and flow rate gauges with no obstruction to the radar, otherwise it will affect the measurement accuracy.

2. When installing the flowmeter, it is necessary to ensure that the surface of the casing is level as much as possible and installed in the middle of the channel.

3. The beam of the flowmeter is recommended to face the incoming water direction, as shown in the installation diagram, and the horizontal angle with the water flow direction is0Degree.

4. The flowmeter is only affected by dynamic targets. When the channel is hardened without weeds or trees, even if the beam is irradiated on both sides of the channel, it will not affect the flow measurement.

5. Under the same conditions, the higher the installation height, the weaker the echo and the worse the signal quality, especially for scenes with low water flow velocity, where the ripples are small and difficult to measure. At the same time, the radar wave irradiation area will be larger, which may cause the beam to irradiate the canal bank and be affected by the moving targets on the bank. If installed too low, it is not conducive to anti-theft protection, so for pole installation, it is recommended to install within a height range3-4Rice.

6. On site inspection to determine the installation height of the flowmeter and channel parameters