Dinel GPLS-25N-0 Manuel d'instruction - Page 8

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b) Mode C (normally closed)

Put the level of the measured medium in the state below the lower edge of the

sensor in the tank or in the gauge-pipe.

Attach the magnetic pen MP-8 to the sensitive spot

When the LED lights up, the sensor is in the state closed.

After removal of the magnetic pen check the status of orange lights:

If the LED lights or is flashing rapidly (0.2 s), go to step 4.

If the LED doesn´t light, you must repeat step 2 so as to observe the limit

of 4 seconds attaching magnetic pen.

Put the level of the measured medium in the state above the upper edge of the

sensor in the tank or in the gauge-pipe.

Attach the magnetic pen MP-8 to the sensitive spot

When the LED goes out, the sensor is in the state open.

After removal of the magnetic pen check the status of orange lights:

If the LED doesn´t light, settings of the sensor is correct.

If the LED lights, the sensor was set incorrectly and you must repeat the

procedure from step 1.

If the LED is flashing, the sensor didn´t recognize upper and lower limits.

In this case, first verify that at the step 1 the level of the measured medium

was below the lower edge of the sensor and at the step 3 the level of the

measured medium was above the upper edge of the sensor. Then make sure

that the thickness of the gauge-pipe wall or the tank wall does not exceed

the limit specified in the Technical specifications (p. 2). If not, check there

isn´t a thick layer of sediment on the inner wall of the tank or the gauge-pipe.

After this settings the sensor responds to the level immersion and emersion in the

upper half of the sensing area and the hysteresis size 5 mm (1/8 of the distance

between the bottom and the top of the sensor).

TaTuS SigNalizaTiON

Indicator

Orange LED

* Sensor with "S" type output, for each flash of the LED switches its output on for approx. 3 ms. This period is

sufficiently short to avoid unwanted switching of relay contacts. For binary inputs, we recommend to set the filter so

as not to respond to pulses shorter than 3 ms.

Function

Continuous light – Sensor is closed (switched ON)

Dark – Sensor is open (switched OFF)

Rapid flashing (period 0,2 sec.) * – Unrecognized upper and lower limits of setting mistake

Slow flashing (period 0,8 sec.) – Short circuit at sensor output

for minimum 4 seconds.

for maximum 2 seconds.