Model: Ultrasonic open channel flowmeter without weir channel
Protection level: IP65 for display instrument, IP68 for probe
Probe material: The standard configuration is ABS, and anti-corrosion materials should be used in corrosive environments.
product details
Selling Units: Single item
Single package size: ： 39*26.5*16.5cm
Single gross weight:3.00 KG
English Display Interface
1、 Key function:
Our products can be debugged through three keys on the panel. Then, the measured value is showed by LED.
◇Enter to menu ◇Move the cursor
◇Confirm menu ◇Select the menu
◇Confirm parameter calibration ◇parameter calibration
2、After switched on it, press the SET key for two second and enter the first level menu.
3、The height value of probe input to the “reference zero”.
As the reference zero, please check the figure menu structure.
( Height of probe is the distance from the launch of probe to the edge of weir and flume).
4、“4mA Flow value” and “20mA Flow value”
4mA flow value：output is 4mA when the instantaneous flow equal to this value.
20mA flow value: output is 20mA when the instantaneous flow equal to this value.
The location of "4mA flow value" and "20mA flow value" in the menu please check Schedule II menu chart.
5、Select the type of weir and flume, you must consider these: the size of flow and dynamics of water in the channel, the formation of free flow or not.
Maximum flow is less than 40 l/s(144 t/h), suggestion is right-angled triangular Weir.
Max flow is more than 40 l/s , the suggestion is parshall flume.
Upstream channel is short and the max flow is more than 40 l/s, the suggestion is rectangular Weir.
Before measurement, you should calibrate the reference zero point which is the distance from the probe to zero point of weir slot level.
(The factory default is parshall flume.)
① Triangular Weir
As triangular weir, please follow the following instructions:
“9 weir and flume type”---“1 triangular weir”-----“1 work status” then choose the “start”.
For “2 triangular weir angle”, please choose the actual angle of instrument, then the instrument can be calculated the corresponding flow automatically according to water level.
② Rectangular Weir
As rectangular weir, please follow the following instructions:
“9 weir and flume type”---“1 rectangular weir”-----“1 work status” then choose the “start”, and choose “0.25m,0.5m,0.75m,1m, Non-standard channels” from menu of “2 standard channel”, then the instrument can be calculated the corresponding flow automatically according to water level.
③. Trapezoidal Weir
As trapezoidal weir, please follow the following instructions:
“9 weir and flume type”---“1 trapezoidal weir”-----“1 work status” then choose the “start”, and input actual weir cage width in the menu of “2 weir cage width”, then the instrument can be calculated the corresponding flow automatically according to water level.
As parshall flume, please follow the following instructions:
“9 weir flume type”---“1 parshall flume”-----“1 work status” then choose the “start”. The flow formula of parshall flume: Q=Chan, according to the throat width (b), find the mechanic coefficient(c) and index(n) from the table 2 of the parshall flow formula and input to the menu of “9 weir type”---“1 parshall flume”-----“2 mechanic coefficient c”-----“3 index n”. then the instrument can be calculated the corresponding flow automatically according to water level.
Function | Split type | |
Range | 0.1l/s～99999.99 m³/h | |
Cumulative Flow | biggest：4290000000.00 m³ | |
Max range for level | 3m | |
Accuracy for level | 0.5% | |
Resolution | 3mm or 0.1%（bigger） | |
Display | Chinese LED | |
Accuracy for Flow | Standard weir:1～5% (meet the requirements of national standard weir and channels) Non-standard weir: 10～30%。 | |
Analog output | (Four-wire system) 4～20mA/750Ωload | |
Delay output | (optional)two groups :AC 220V/ 8A or DC 24V/ 5A， | |
Power supply | Standard:24VDC 100mA；optional: 220V AC+15% 50Hz。 | |
Power supply | (optional)12VDC、battery、solar | |
Environment Temperature | LED:-20～+60℃，Probe: -20～+80℃ | |
Environmental pressures | Standard atmospheric pressure | |
Environment humidity | ≤90%RH， Non-condensing | |
Process temperature | -20～80℃； | |
Process pressures | Standard atmospheric pressure | |
Communication | Optional:485，232，MODBUS protocol | |
Protection Grade | LED:IP67 Probe: IP68 | |
Cable Probe | Standard:10m， The longest:100m | |
Probe installation dimension | M78x2mm thread + matching nuts | |
Probe Material | Standard: ABS Teflon material in corrosive environment | |
Power Consumption | Split type: Power supply:24V, No relay: 100mA Channel 1 of Relay: 120mA； Channel 2 of Relay: 145mA； Channel 3 of Relay: 170mA； Channel 4 of Relay: 190mA； The specific power is as follows: No relay: 24×100mA=2.4W； Channel 1 of Relay: 24×120mA=2.9W； Channel 2 of Relay: 24×145mA=3.5W； Channel 3 of Relay: 24×170mA=4.1W； Channel 4 of Relay: 24×190mA=4.6W； Channel 3 of Relay: 24×170mA=4.1W； Channel 4 of Relay: 24×190mA=4.6W； Integrated type (Four-wire system) Power supply:24V, No relay: 80mA Channel 1 of Relay: 105mA； Channel 2 of Relay: 130mA； The specific power is as follows: No relay: 24×80mA=1.9W； Channel 1 of Relay: 24×105mA=2.5W； Channel 2 of Relay: 24×130mA=3.1W； |
四、Installation
◆Integrated type
◆Split type
Figure4.1.1 Outline Figure 4.1.2 Structure of flow meter
The display parts of split type should be installed the indoors with good ventilation and non-corrosive gases. Instrument is wall mounting. If the condition of indoor is bad or it must be hung out the door, installation of instrument must be in the protective box to avoid the sun and rain.
Product application:
Mainly used in sewage plant, water plant, mine, water conservancy, power plant, chemical plant, steel plant
The monitoring of waterlogging and water, sewage quality, urban pipeline and rainfall station in the construction of smart city project; applicable to the monitoring of rainfall point of existing water conservancy projects, river water and rain monitoring, reservoir water and rain monitoring, flow station, irrigation area, open channel monitoring, etc.; automatic monitoring of water plant, on-line water quality monitoring and secondary water supply monitoring of smart water project; suitable for intelligent water project It is used for the monitoring of collapse and landslide points, debris flow and surface water level of geological disaster projects
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