Tecfluid TH5 For DP Series - Manual (Page 11)

Problem Probable cause Remedy
The analog output gives
always 0 mA
Cables disconnected.
Check the cable connection.
The pointer rubs on the
scale Normally occurs from a blow or fall
of the instrument.
Straighten the pointer by bending
it gently until separate it 2-3 mm
from the scale surface.
When the float is moved
the pointer follow it, but
does not return to 0
The pointer is not properly secured
to the shaft.
Set the pointer on the conical
shaft through a soft and careful
blow.
The pointer is displaced
with respect to the zero
of the scale.
Blow or fall of the instrument.
Match the pointer to the 0 of the
scale by means of the adjustment
screw of the pointer, turning left or
right according to convenience.
Hold the shaft in such a way that
is not bent or damaged.
12 TROUBLESHOOTING
11
Note: To remove the cover, it is necessary to remove the four screws "allen" M5 + plastic
washers in the back of the housing.
In all cases, check that there is no friction between the movement of the needle and the
connecting cables of the limit switches or transmitters.
When the pointer of the instrument is handled, it can become in a loss of accuracy of the
transmitter.
Marking Ex ia IIC T4 Ex ia IIC T6
Specific parameters
Ui : 30 V
Ii : 165 mA
Pi : 1,3 W
Ci : 57,3 nF Ui : 30 V
Ii : 165 mA
Pi : 1,3 W
Ci : 57,3 nF
11.5 Exi parameters