Tecfluid CIP - Manual (Page 3)

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3. MAINTENANCE
The battery has a life time of about 5 years. To
change the battery, the plastic front cover must be
removed. Then the battery, that is situated below
the push buttons, can be replaced.
After replacing the battery, it is not necessary to
reprogram the pulses per litre factor of the meter.
CR2450 batteries are easily found in the shops. If
you prefer, we can change it in our factory.
4. MEASUREMENT ERROR CORRECTIONS
The calibration of the mechanical flowmeters is made with water at 20 o C to obtain a calibra-
tion for a liquid of density 1 kg/l and viscosity of 1 mPa·s. If the flowmeter is used with a liquid
of other characteristics from the above specified or for reasons of turbulences in the flow,
measurement errors can be induced.
To correct these types of errors we can modify the pulses per litre factor programmed in the
instrument.
5. CHANGE OF UNITS OF MEASUREMENT
In some cases we need to change the measurement units, for example, instead of working in
litres we need to work in kilograms. In this case we will need to know the density of the liquid
(ρ).
To change from litres to kg we must divide the pulse per litre factor by the density of the liquid
to obtain the new factor for programming the
CIP
. For example, if the liquid has a density of
0.9 kg/litre, the meter gives us 200 pulses per litre and we must count in kg, we will program
the
CIP
using 222.222 as the new pulses per litre factor to be able to count directly in kg.
Fk = Pulses per litre factor to count in kilos
F = Original pulses per litre factor
ρ = Density of the liquid in kg/litre
6. TECHNICAL CHARACTERISTICS
6.1. Power supply
CR-2450 lithium battery
Nominal voltage: 3V
Capacity: 560 mAh
Power consumption: 8 µA
6.2. Totalizer
N o . of digits: 7
Size of digits: 8 mm
Reset: By means of push button or magnet.
ρ
F
=
F
k