Case Study Sibenik,

Consumption data and network control at the touch of a button

73 m3 168 m3 231 m3 1161 m 18

Šibenik – – – RDC

Žirje 17 9 Kaprije E 6 16

Šibenik – Zlarin – Kaprije – 7 8 14 5 Žirje READOUT UNDER 10 15 THE MOST DIFFICULT CONDITIONS 13 The island’s infrastructure makes meter reading a challenge. Test-results – key: E 11 No. of meters placed in the pits are read-out 12 Test result: RDC Premium receiver No. of meters placed in the pits are not read-out 19 receives almost all radio modules in meter installed inside an appartment are read-out Otok Kaprije RDC open pits. A small part could not be RDC Premium Receiver

E received when the shaft was closed. Izar Radio Extend, to reach the too far-away radio modules

THE CHALLENGE: RELIABLE METER READING IN A DIFFICULT TERRAIN

The “Vodovod i Odvodnja d.o.o. The waterworks of Sibenik (Vodovod i Sibenik” waterworks in Sibenik, Odvodnja d.o.o. Sibenik, Croatia) are Croatia, provides drinking water for faced with great challenges in the me- 46,332 people. This also includes the ter reading on the small island many Kornati islands off the Croatian Kaprije, which has a population of more mainland. The manual reading of the than 1,000 during the summer months. meters on the small island of Kaprije has so far proved to be particularly The drinking water required for the in- challenging. In a pilot project, Diehl habitants of the island is transported to Metering has installed a fixed network the island by special tankers. Every solution for the Sibenik waterworks drop is expensive and precious, the on the island. Five more islands are to journey from the mainland is long. Until follow in the future. now, mechanical meters were mostly installed in shafts surrounded by rock and difficult to access on the cliffy is- land, which is typical for the region. The differences in height to be over- EXPENSIVE come also made manual reading diffi- DRINKING cult for the employees of the water- works. The readout process was WATER therefore time-consuming and costly, High costs by special and the reaction time to problems was tanker transport of water very long. as well time-consuming manual reading. THE SOLUTION: FIXED NETWORK WITH ULTRASONIC WATER METERS FOR AUTOMATED READOUT

For the AMR (Automatic Meter Reading) on Kaprije, the existing mechanical water meters were successively replaced by RF Antenna GPRS/ UMTS LAN static HYDRUS ultrasonic meters. For

the radio readout, two unidirectional an- IZAR RDC Data management Premium system tennas were installed and the IZAR RDC Receiver Data FTP Data Premium Receiver is configured to up- server transfer load the meters data every 15 minutes to the Diehl Metering FTP server. The data management system is provided by the local partner company IKOM.

THE BENEFIT: TIME, WATER AND MONEY ARE SAVED

“We consciously chose Kaprije for our pilot project Thanks to the Fixed Network installed because it is the place with the most difficult meter on the island, time-consuming on-site reading conditions. The excellent advice and the visits by employees for meter reading results we obtained speak for themselves and have in Kaprije are a thing of the past. This convinced us. We are planning to equip another five saves time and money. The large radio range of the Fixed Network ensures that islands with a Fixed Network from Diehl Metering.” the meter data is received error-free by Mr. Frane Malenica, General Manager of waterworks the stationary radio receivers. „Vodovod i odvodnja“ Sibenik.

Any faults or water bottlenecks are de- tected at an early stage so that appro- priate countermeasures can be taken immediately. In addition, the HYDRUS static ultrasonic meter detects air in the pipes and precisely measures the actu- al water consumption. This saves costs and eliminates incorrect consumption measurements. WATER EFFICIENT, CONSUMPTION QUICK If leaks often went unnoticed in the past, an automated alarm ensures that ALWAYS IN VIEW REACTION faults in the distribution network or at The monitoring of the faster decision and response the water meter can be detected and consumption is possible at time thanks to AMR rectified. any time. (Automated Meter Reading) CSW 09/2019 www.diehl.com/metering