16
Apply supply voltage to level switch NRS 12.
Commissioning
Check that the NRS 12 and the associated level electrode are wired in accordance with the wiring
diagram,
Fig. 10, Fig. 11
.
Checking electrical connection
Applying supply voltage
Performance Test
1. When the electrodes are connected but exposed, the LED “MIN” must be illuminated.
2. When the electrodes are submerged the LED “MAX” must be illuminated. When pressing button
“TEST” the LED “MIN” must also light up.
3. To simulate the condition “electrode submerged” short circuit the corresponding electrode terminal
with terminal 12.
4. The electrode is supplied with 11 V AC +/– 20 %. When the electrodes are exposed this voltage
can be measured between the electrode tips and the earth connection by using a highresistance
instrument (100 kΩ/V).
Limit switch MIN / MAX
Note
n
For troubleshooting consult section “Operational Malfunctions” on pages 17/18.
Содержание NRS 1-2
Страница 1: ...1 NRS 1 2 Installation Instructions 818780 03 Level Switch NRS 1 2 GESTRA Steam Systems EN English ...
Страница 8: ...8 Technical Data continued Dimensions Fig 2 106 7 32 51 Fig 3 112 85 ...
Страница 9: ...9 Design NRS 1 2 G Fig 6 G B C F E D Fig 4 Fig 5 NRS 1 2 MADE BY GESTRA Test NW MIN NW MAX HW A A ...
Страница 10: ...10 Functional Elements NRS 1 2 NRS 1 2 MADE BY GESTRA Test NW MIN NW MAX HW Fig 7 4 1 3 MAX 55 C MAX 95 IP 65 ...
Страница 19: ...19 For your notes ...
