Criterios de selección de medidores, tecnologías aplicables y nuevas normativas

THANK YOU

TO HOST US

WHY

AN ACUEDUCTO NEEDS A “GOOD” METER?

(INSTEAD OF A “CHEAP” ONE?)

BECAUSE THE METER IS THE

CASH REGISTER OF THE ACUEDUCTO

ACUEDUCTOS ARE THE ONLY COMPANIES IN THE

WORLD THAT, USUALLY, PROVIDE A SIGNIFICANT

PERCENTAGE OF SERVICE (WATER)

FREE OF CHARGE

TO THE CUSTOMERS (USUARIOS)

ON ACUEDUCTOS

GLOBAL WATER “LOSSES” CAN REACH THE 40%

THE NON MEASURED (BUT DELIVERED!) WATER

CAN OVERPASS THE 15% !!!!!

AN ACUEDUCTO

HAVING A GLOBAL REVENUE OF 10 MILLION

DOLLARS PER YEAR

HAVING 10% OF NOT MEASURED WATER

IT LOOSES (PROVIDE FREE OF CHARGE TO THE

USUARIOS) 1 MILLION DOLLARS PER YEAR !

IT LOOSES 1 MILLION DOLLARS PER YEAR IN NET

INCOME!!!!!!!

FOCUSSING THE WATER METERS

VERY OLD WATER METERS INSTALLED (out of the

life time of them)

WATER METERS WITH “POOR” PERFORMANCES

(even being relatively “new”)

AT WHICH REAL FLOW RATES

WORKS AN ½”

WATER METERS?

(½” = some 90% of the installed meters)

A TAP, NORMALLY OPENED, DELIVER

200 – 400 LITRES/HOUR

A WASHING MACHINE

(or a DISHWASHER)

100 – 400 LITRES/HOUR

HOW MANY TAPS/APPLIANCES CAN BE

SIMULTANEOUSLY OPENED, IN AN

APPARTMENT?

Usually only one

Sometimes (rarely) two

(three can happen “very rarely”)

WHICH IS THE MINIMUM FLOW THAT

CAN BE USED BY ONE CUSTOMER

(USUARIO)?

BELOW 10 LITRES/HR THE WATER

START TO “DROP”

BELOW 6 LITRES/HR THE TIME

NEEDED TO COLLECT WATER

BECOMES TOO LONG

CONCLUSIONS

THE REAL WORKING FLOWS ARE

BETWEEN THE 6 LITRES/HR AND THE

1000 LITRES/HR

BUT

INSIDE THE RANGE 6 - 1000 LITRES/HR

WHICH IS THE

CONSUMPTION “PROFILE”?

A SIGNIFICANT ANALYSIS

ON FIELD

CITY OF TORINO (ITALY)

APPROX 1.5 MILION PEOPLE

EACH METER WITH

PULSE EMITTER + DATA LOGGER

EACH DATA LOGGER MEMORIZE

THE INSTANT CONSUMPTION

(data logger with clock and calendar)

TYPICAL CONSUMPTION PROFILE

ON HOURLY BASE

TYPICAL CONSUMPTION PROFILE

% flow rate consumption

on

% working time at that flow rate

THE AREA BELOW THE CURVE IS

PROPORTIONAL TO THE TOTAL

VOLUME OF DELIVERED WATER

(TO THE CUSTOMER – USUARIO)

THE MAIN “VOLUME” OF WATER IS

DELIVERED AT FLOW RATES

FROM 20 LITRES/HOUR

UP TO 600 LITRES/HOUR

THE CONSUMPTION PEAK

IS “AROUND” 100/150 LITRES/HOUR

PLEASE NOTE:

“HIGHER” IS THE COST OF THE m3 OF

THE WATER, “LOWER” IS THE PEAK

VALUE (and, generally, the flow rate

sampling)

SUMMARIZING

BELOW 3 LITRES/HOUR : NOT INTERESTING/USEFUL

(VOLUMES ARE ANYWAY VERY SMALL)

FROM 3 TO 6 L/H: NEEDED TO START TO MEASURE

(LEAK DETECTION MORE THAN “INVOICING” FUNCTION)

FROM 6 TO 20 L/H: NEEDED TO MEASURE (START THE

REAL “INVOICING” FUNCTION)

FROM 20 TO 1000 L/H: NEEDED TO MEASURE IN A

VERY STABLE WAY

SUMMARIZING

BASED ON THE TORINO EXPERIENCE, THE

PASSAGE FROM “LOW PERFORMACE” TO “HIGH

PERFORMANCE” METERS (TRUE CLASS C

METERS), PERMITS

APPROX +4% ON MEASURED WATER

MEANS:

+4% ON REVENUE

+4% ON NET INCOME

PLEASE NOTE:

THE CUSTOMERS (USUARIOS) DO NOT “OVERPAY”

NOTHING. THEY SIMPLY PAY THE CORRECT

AMOUNT. TODAY, IN AVERAGE, THEY PAY LESS

THAN THE DUE.

THE ACUEDUCTO AVOID TO DELIVER WATER “FREE

OF CHARGE” TO USUARIOS.

SEEN IN THIS OPTIC

“GOOD METER” MEANS:

METER THAT PERFORM IN A VERY

GOOD AND STABLE WAY FROM 20

LITRES/HR

METER THAT START TO MEASURE UP

TO 6 LITRES/HR

IN OTHER TERMS:

TRUE CLASS C

(OR MID R160 as per the new norms)

THE NEXT FUTURE

keep an open mind approach!

THE NEXT GENERATION OF WATER

METERS:

IMPELLER WATER METERS

THAT PERFORMS LIKE “VOLUMETRIC”

MID R250 OR BETTER

ADVANTAGES:

MEASUREMENT OF THE VERY

LOW FLOWS

WITHOUT THE PROBLEMS OF THE

“VOLUMETRICS”

ABOUT NORMS – IN EUROPE

European norms represent the

“minimum”.

Each acueducto can claim for

“better - specific performances”

ABOUT NORMS – IN EUROPE

1st level: European directives

and laws (like MID 2004/22/CE).

2nd level: National norms (like

the “potability” compatibility)

3rd level: Acueducto technical

specs.

ABOUT NORMS – IN EUROPE

The acueducto is the “owner” of

the meter.

The usuario is the owner of the

network from the meter

(excluded) to the tap

Gracias !!!!