10
©
Dinel, s.r.o. DLM–35
Due to the possible occurrence of an electrostatic charge on the non-conductive parts of
the sensor, it is necessary to ground all sensors intended for use in environments with
an explosion hazard DLM–35Xi (XiT, XiM, XiMT). This can be performed by grounding el.
conductive tanks or el. conductive tank lids, and in the case of el. non-conductive tanks
using and grounding an auxiliary plate electrode PDE-27.
In the event that the level meter (sensor) is installed in an outdoor environment at a
distance greater than 20 m from the outdoor switchboard, or from an enclosed building,
it is necessary to supplement the electrical cable leading to the level meter (sensor) with
suitable overvoltage protection.
In the event of strong ambient electromagnetic interference, paralleling of conductors with
power distribution, or for distribution to distances over 30 m, we recommend using a shielded
cable and grounding the shielding on the side of the power source.
7 . Control elements
Cable gland
or connector
Orange LED
Sensitive spot
+
Sensitive spot
-
Green LED
spot
• input to setting mode
• direct setting to value 4 mA (0 V)
• decrease in values along defined steps
spot
• input to setting mode
• direct setting to value 20 mA (10 V)
• increase in values along defined steps
Fig. 7: Top view of level sensor
8 . Function and status indication
LED indicator colour
function
"RUN"
green
Measuring function indicator
flashing
– (repeats according to period of measuring approx. 0.5 s)
– correct function of measuring the level
dark
– incorrect installation or malfunction.
LED is also not illuminated in limit setting mode.
alternating flashing green and orange LED
– incorrectly set limits
"STATE"
orange
Settings indication
slow flashing
– indication of setting the lower limit
rapid flashing
– indication of setting the upper limit
permanent shine
– the level meter is prepared to confirm the limit
setting by means of mag. pen
3x short flashes
– setting confirmation
simultaneous shine of green and orange LED
– during touching
the mag. pen, when the limit setting is confirmed
