Brüel & Kjær Vibro ds822 Serie Betriebsanleitung Seite 60

2 mm displacement sensor system series ds822 ATEX
EN
Instruction
Check the displacement sensor and the extension cable:
a. Measure the supply voltage I
connected. Disconnect the cable connected to the driver (terminal 1) and measure supply
voltage I again. If I
B
sensor are OK. Otherwise, there is a disruption in the displacement sensor or extension
cable.
b. Check the resistance of the extension cable and the displacement sensor:
For a 5 m system: R
For a 10 m system: R
Otherwise the displacement sensor or extension cable is defective.
Check the driver:
Measure the voltage (terminal 2) at the driver without the displacement sensor connected

and without cables. The result you should obtain is I
driver is defective.
Page 24 of 33
(terminal 2) with extension cable and displacement sensor
B
changes by about 1.8 mA, the sensor cable and the displacement
B
+ R = 8.7 Ω
sensor ext.
+ R = 12.1 Ω
sensor ext.
0.5 Ω
±
0.5 Ω
±
= -8.0 mA ±1 mA. Otherwise, the
B
| Functional check
© Brüel & Kjær Vibro C105507.001 / V03

Technical alterations reserved!