Tecfluid DFD-2 - Manual (Page 6)

6
In the examples given, the jumper is shown as a black filling.
In the four examples given, one can see the way to select the multiplication factor (K). The first
example would be the selection of the factor in the case of the turbine flowmeter given above, in
which the four significant digits have been selected with the BCD switches and the jumper has
been put in the second position for the two zeros between the decimal point and the first
significant digit.
Changes of the multiplication factor must be made when the instrument is switched off (no mains
voltage), because this factor is read only when the instruments starts up (when the mains voltage
is switched on).
4. TECHNICAL CHARACTERISTICS
4.1 Working conditions
The case has protection as per IP 40 and the terminals as per IP 20.
The working temperature limits are 0 to 50
o
C
4.2 Mains supply
The standard mains voltage is 220 V ac 50/60 Hz. AC Mains voltages of 240 V, 110 V y 24 V
50/60 Hz. and 24 V dc supply voltage are available on order. The fuse should be 250 mA slow
blow (T)
The power consumption is less than 1W.
The instrument is not supplied with a mains filter and in the exceptional cases that, due to high
levels of mains interference, a mains filter is needed, this must be installed externally. Due to
the low power consumption, almost any small mains filter will be adequate.