Tecfluid CP420R - Manual (Page 8)

8
Example 2 - Excess of volume
If we have a flowmeter body which specifies i/l = 1.985, and when we check the volume
of a batch, we find that instead of having 100 litres as programmed, we only have 105
litres (5% more) and we must apply the following correction:
i/l = Original Pulses per litre Factor = 1.985
V = Expected Volume = 100
Vr = Real Volume = 105
i/l n = New Pulses per litre Factor = ? (1.887)
6 HART COMMUNICATION
The CH420R transmitters have a HART communication MODEM
The details of the characteristics with respect to the HART communication are available in
the appropriate Field Device Specification
Resume of the principal communications characteristics:
Manufacturer, Model and Revision Tecfluid S.A., CH420R, Rev. 0
Device type Transmitter
Hart Revision 6.0
Device Description available No
Number and type of sensors 1, external
Number and type of actuators 0
Number and type of host side signals 1, 4 – 20 mA analog
Number of Device Variables 2
Number of Dynamic Variables 1
Mappable Dynamic Variables No
Number of Common Practice Commands 13
Number of Device Specific Commands 2
Bits of Additional Device Status 12
Alternative operating modes? No
Burst mode? No
Write Protection? Yes
i/l n = i/l
V
Vr