MICRO-EPSILON turboSPEED DZ140, Руководство по эксплуатации, Страница: 26 / 34

Page 26
Operation
turboSPEED DZ140
5.5 Settings
5.5.1 Mode (Turbo Charger Speed, Sensitivity, Test Signal)
The maximum measurable speed depends on the measuring distance. The smaller the measuring distance,
the higher the measurable speed. The digital output may exceed 400,000 rpm, but my also fall below if the
distance is too large.
The electronic controls the internal RAW voltage at infinite
distance, thus between the individual blades, to appro-
ximately 2.8 V. The sensitivity of the electronics can be
increased in order to detect a blade at a greater distance
between the sensor and the turbocharger blade. In the
example the turbocharger blades
2 and 3 were reliably de-
tected at a
Med
sensitivity setting. A
Low
sensitivity setting
guarantees the best immunity to interference.
Ex factory the controller is delivered with a
High
(mode 0)
sensitivity setting.
T
meas
[°C]= U
temp
[V] - 50 °C
350 °C
5 V
*
Fig. 20 Sensitivity setting for detecting single turbocharger
blades, RAW SIGNAL
Set the maximum speed to be measured using the
switch
Mode
on the controller, see Fig. 21 .
- Mode 0: 400k high (400.000 rpm, high sensitivity)
- Mode 1: 200k high (200.000 rpm, high sensitivity)
- Mode 2: 400k med (400.000 rpm, medium sensitivity)
- Mode 3: 200k med (200.000 rpm, medium sensitivity)
- Mode 4: 400k low (400.000 rpm, low sensitivity)
- Mode 5: 200k low (200.000 rpm, low sensitivity)
- Mode 8: test signal, see Chap. 5.4
Status
SENSOR
Mode
Fig. 21 Rotary switch for speed, sensitivity and test mode