Tecfluid TR2420 - Manual (Page 3)

3
1. INTRODUCTION
The level transmitter TR2420 is a converter that adapts to the level resistive sensors
series LE and LT (reed chain).
The variation of the internal resistance of the sensor, as the float changes its position, is
converted into a current signal from 4 to 20 mA.
2. RECEPTION
The level transmitters series TR2420 are supplied ready for installation and operation.
Likewise, they are packaged for protection during transportation and storage.
3. ELECTRICAL CONNECTION
In order to access inside the transmitter, remove
the cover by unscrewing the four screws.
For the electrical connection, the transmitter
TR2420 has a screw terminal block.
For the electrical installation it is recommended
to use multiple conductor cables with individual
cable sections in the order of 0.25 to 0.5 mm
2
in
order to make it easier to connect.
Before starting the installation, check that the
cable glands are the right size for the cables to
be used, this will guarantee the instrument will
stay watertight. The PG11 cable glands used are
for cables with outside diameters between 6 mm
and 10 mm.
Peel the outside insulation to free the inner
cables. Pass the cables through the cable glands
and screw down in the corresponding positions
of the terminal strip.
Once the wiring is finished make sure that the
cables are well gripped by the cable glands to
maintain the degree of protection.
Before installing the equipment, check that the
supply voltage available in the installation is
compatible with the marked on the label of the
instrument. The power supply limits are indicated
in the label of the equipment.
To help in the connecting of the equipment, the
description of the terminals is marked on the
printed circuit next to the terminal block.