RQ-30 ADMS - All in One Autonomous Discharge Radar System

Fully Loaded, Non-Contact Discharge Measurement Radar Sensor with integrated data logger and GPRS/GSM communication.

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Physical and environmental

Power    supply                   

9...28 VDC; Reverse voltage pro- tection, overvoltage protection Battery capacity 24 Ah/12 V; 20-W solar panel recommended for midlatitudes

Power consumption at 12 VDC

Standby approx. 3 mA

Active measurement approx. 120mA


RS-485 ASCII / Modbus RTU SDI-12

Operating tem-


-40…60 °C (-40…140 °F)

Storage temperature

-40…60 °C (-40…140 °F)

Relative humidity

0...100 %

Protection rating


Lightning protection

Integrated protection against indir- ect lightning with a discharge capacity of 0,6 kW Ppp

Housing material

Powder coated aluminum, vandalism-proof

Mounting bracket

Ø34…48 mm

Size L x W x H

430 x 202 x 419 mm (16.93 x 7.95 x

16.50 in)


15.5 kg (34.17 lb) plus 7.4 kg (16.31lb) lead acid batteries

Data logger and communication


4 MB internal flash memory (equi- valent to approx. 500'000 meas- urement values) 

Mobile modem

2G, 3G (optionally 4G) 3 FTP/HTTP servers

Functions: IP call, fixed IP, time-syn- chronization via NTP, e-Mail and

SMS messages


Detectable measurement  range                          

0.08…16 m/s (depending on waves)


± 0.01 m/s (certified by METAS)


1 mm/s

Direction recognition


Measurement dur-


5…240 s

Measurement interval

8 s…5 h

Measurement fre-

24 GHz (K-Band)

Fully Loaded, Non-Contact Discharge Measurement Radar Sensor with integrated data logger and GPRS/GSM communication. 

The RQ-30 ADMS allows a discharge measurement for rivers, streams open channels and canals where continuous monitoring is desired. Besides the advantages of the basic RQ-30 system there is additional data logging as well as data transmission (2G / 3G / 4G) integrated in the RQ-30 ADMS system. 

The sensor can be simply mounted on bridges, on the roofs of closed canals or channel superstructures. It is most ideally installed at measuring spots where continuous discharge measurement is to be done and the data logging as well as the data transmission should be integrated into an all-in-one system. It's the perfect discharge radar for flood warning.