Techfluid SC250H Instruction Manual page 33

Likewise, to enter into the programming window, just click the corresponding tab.
Changing the parameters of this screen, (see previous page) you can program the different
functions of the equipment.
In the box Totalizer units power can be selected. The power allows to multiply or divide by a
factor multiple of 10 the totalizer speed as well as the pulse output.
By default, with the power = 0, the totalizer and the pulse output indicate the scale units, ie, if
the scale of the instrument is in litres / hour, the totalizer indicates liters and the digital output
gives one pulse for each litre.
If, for example, the power is programmed to 1, the totalizer and pulse output will run 10 times
faster. If a power = -2 is programmed, they will run 100 times slower.
In the box Digital output this output can be configured as pulse output or as alarm. In the latter
case, the activation and deactivation values for the alarm can be programmed.
In the box Current loop the values of flow rate equivalent to 4 and 20 mA can be programmed.
These values do not have to be the beginning of scale and end of scale values.
In the box Flow rate the values of cut off and filter can be changed.
The cut off is the value below which the TH7 transmitter will consider zero flow rate, and
therefore the analog output will give 4 mA and the digital output will be deactivated if it is
programmed in pulse mode.
The filter offers stable current loop readings despite fluctuations in the flow reading. It is
programmed in seconds, between 1 and 8.
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