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ATENAS Flow Measurement System for Rivers

ATENAS provides an optimal design for each application.
ATENAS provides the higher accuracy in irrigation management or in flood control.
ATENAS can be used as a continuous flow observation system during floods.

|Adopted Site|

: Continuous flow measurement with high accuracy.
: Effects of suspended solids and pollution are minimized by an adoption of low-frequency ultrasonic transducers.
: The maximum applicable river width is 1000m, becouse of high-output ultrasonic transducers.
: SIMK (optional numerical hydroacoustic simulation) provides more accuracy even in floods.
: Options to meet various needs.

Typical Application

Ministry of Land, Infrastructure, Transport and Tourism:
New Technology Information System(NETIS) Registration Number: KK-050041-A

An article about ATENAS

Common Speccifications

Signal processing units

Type	KTT-200	FTT-200	FTT-28
Applicable river (channel) width	1m to 20m	20m to 50m	50m to 1,000m
Ultrasonic frequency	200kHz	200kHz	28kHz
Rated RMS Power	600W	2kW	2kW
Sensor placement	Max.8 acoustic paths /max. 2 channels	Max. 8 acoustic paths(single- path　on 8 levels, cross-path on 4 levels)
Flow Velocity Range	-20m/s to +20m/s	-10m/s to +10m/s
Data storage	Built-in data logger (standard: for 2 years with every 5 minute data gatherings)
Interface	VGA.Mouse/KB, USB×4, RS-232C×2, Ethernet×2
Input	Water Level: analog inputs(4 to 20mA)×1, Reset: digital inputs×1
Output	Flow Rate Water Level: analog outputs (4 to 20mA)×2 Flow Velocity: analog outputs(4 to 20mA)×each sensor level Alarm・Healthy : digital outputs×2
Operation Environment	0ﾟC to +50ﾟC (No condensation)		5ﾟC to +35ﾟC (No condensation)
Power Supply	DC12V	AC100V to 240V±10%, 50/60Hz

Transducers

Ultrasonic Transducer	TR-200/8	TR-200/5	TR-28/18
Ultrasonic frequency	200kHz	200kHz	28kHz
Rated RMS Power	600W	2kW	2kW
Dimensions	φ70×h40mm	φ107×h68mm	φ183×h142mm
Weight	1.3kg	4.3kg	8.4kg
Dimensions of hemisphere Protective Housing	φ218×h109mm	φ340×h170mm	φ440×h220mm

Adpted site

Biwako / Seta-gawa Araizeki

System	Cross path Responder system
Ultrasonicpath lengh	About 130m

This system can measure continuously during floods.

Other adopted sites

Customers	River	Sets
Ministry of Land Infrastructure,Transport and Tourism	Tone-gawa	1
Ministry of Land Infrastructure,Transport and Tourism	Kumano-gawa	1
Ministry of Land Infrastructure,Transport and Tourism	shinano-gawa	2
Ministry of Land Infrastructure,Transport and Tourism	Omaru-gawa	1

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