MIR-1 Series

Microwave Type Water
Level Gauge■ Stable measurement without thermal or pneumatic impacts■ Low-power transmission with no impacts to the human body or environment■ Non-contact measurement with least impacts from drift woods or sedimenthttps://www.takuwa.co.jp/en/

The distance to the water surface is measured by multiplying the propagation time, in which themicrowave pulse transmitted to the water surface reflects on the water surface and is received, by
1/2. The water level is calculated by subtracting this distance from the installation height.
The microwave allows stable measurement on the rivers without impacts from the environmental
conditions and the temperature of the measurement subject. The microwave used is low-poweredtransmission, giving no impact to the human body or environment.

Specifications■ Configuration diagram■ Microwave sensor
ModelMIR-1

Measuring method

Microwave pulse radar

Microwave frequency

5.8GHzMeasuring range

0 to 10m(for river),0 to 20m(for still-water level)

Max.1km
Steel pole
Sensor cable

Output signal

DC4 to 20mA

Power supply

DC16 to 36V (supplied from the water level coder)

Operating condition(temperature, humidity)-20 ℃ to +70 ℃ (No freezing)

Material

Body：Aluminum die casting
Antenna：SUS316

Dimensions

265W x 584H x 265D mm

WeightApprox.5kg

Distance to surface±10mm(Outdoor,wall-mountedtype)

Junction box(Unit type)

Irradiation angle 17°(Irradiation range：
diameter approx.
3.0m at 10m measuring)

Water level
coder
Outputdata

Power supply

Water levelup to 0.5m below the flange mount position

Indoor shelter

Junction box
Distance to river bed

Dead zone
Accuracy

Microwave sensor

River bed

■ Microwave sensor■ Water level coder

148176

ø52LCD touch panel
Average calculation
None averaging
Moving average

20 sec, 1 min, 5 min,10 min(every 1 sec) or (every 2 sec)
Weighted average 5 sec, 10 sec, 15 sec (every 1 sec)
Level Setting-999.999m to +999.999m

Input type

Microwave sensor(DC4 to 20mA)

Number of input

2 channels(Max.)

Power supply

Select from DC12V or AC100V 50/60Hz

Dimensions

480W x 99H x 300D mm (excluding protruding parts)

Weight7kg or less

2)BCD output3)Comparative output
4)Card recording

ø188

ø265

■ Water level coder430

2 channels at 1 input, select from4 to 20mA, 0 to 5V or 0 to 10mV
2 channels(Max.) at 1 input,
BCD output 5 digits with odd parity
8 points at 1 input(A,B,C,D≦H or A,B,C,D≧H), Non-voltage A contact(Photo MOS relay output)
Recording media：
SD Card(Maximum 2GB)
Recording interval：
No, 1, 2, 5, 10, 15, 20, 30(min),1, 2, 3, 6(hour)
Recording capacity：
1 year or more(at 1 min recording)3001)Analog output

OutputMeasurement
range

2Top view

50
99

Processing functions

Measurement
reference point

0460480
Front view

24.5

Display・OperationC) BCD output
D) Comparison output
E) PrinterF) SD Card slotG) Power supplyH) Serial output

6Model1:1 sensor, 2:2 sensors
0:No, 1:4 to 20mA,
2:0 to 5V, 3:0 to 10mV
0:No, 1:Yes 1 for each,2= Yes 2 for each
0:No, 1:Yes
0:No
0:None, 1:Yes
D1:DC12V, A1:AC100V
Blank:RS232C, R4:RS422346A) Sensor inputB) Analog output

238

WLC3-AR| A |−|B|C|D|E|F|G|H|

SD card slot
(Openings only when SD card is mounted)

2307-MS-300