Tecfluid TH5 For DP Series - Manual (Page 8)

9 LP SERIES
Since LP series are level measuring instruments, they will be available only with TH5 and
TH5H models.
For HART
TM communication, the measuring units of the primary variable (PV) will be a
percentage (%), and the value of this variable will indicate the percentage of level respect
to the instrument scale.
10 TECHNICAL CHARACTERISTICS
10.1 Power supply
2 wire.
Minimum voltage (TH5 y TH5T): 0.02 Z + 12 (Volt) (Z is the load in the current
loop in Ohm).
The minimum value is 12 VDC for Z=0 Ohm.
Minimum voltage (TH5H y TH5TH): 0..02 (Z+Rext) + 14 (Volt) (Z is the load in the
current loop in Ohm).
The minimum value is 18 VDC for Z=0 Ohm and
Rext=200 Ohm.
Maximum voltage: 36 VDC (for the Ex version see point 11.3)
Consumption: maximum 20 mA
10.2 Outputs
Analog output: 4 - 20 mA, factory calibrated
Maximum load in the 4-20 loop: 1,1 k  (at 36 VDC supply voltage)
(for Ex version see point 11.3)
Pulse output:
MOSFET N channel potential free I
max
: 200 mA
8
Power
supply
8 4 WIRE CONNECTION
If Direct Current power supply for the transmitter is not available in the installation, it will
be necessary to incorporate an additional power supply as in the following figure.
Mains