Amphenol Tempsonics Level Plus LLE Manual de operação - Página 15

Procurar online ou descarregar pdf Manual de operação para Transmissor Amphenol Tempsonics Level Plus LLE. Amphenol Tempsonics Level Plus LLE 20 páginas. Magnetostrictive liquid level transmitters with temposonics technology

Imprimir página

7. Electrical connections

7.1 Basic information

Placement of installation and cabling have decisive influence on

the sensor's electromagnetic compatibility (EMC). Hence correct

installation of this active electronic system and the EMC of the entire

system must be ensured by using suitable metal connectors, shielded

cables and grounding. Overvoltages or faulty connections can damage

its electronics despite protection against wrong polarity.

NOTICE

1. Do not mount the sensors in the area of strong magnetic or

electric noise fields.

2.Never connect / disconnect the sensor when voltage is applied.

7.2 Safety recommendations

Be sure to:

1. Always follow applicable local and national electrical codes and

observe polarity when making electrical connections.

2. Never make electrical connections to the level transmitter with

power turned on.

3. Use low-resistant twisted pair and shielded cables. Connect the

shield to ground externally via the controller equipment.

4. Keep control and sign leads separate from power cables and

sufficiently far away from motor cables, frequency inverters, valve

lines, relays, etc.

5. Use only connectors with metal housing and connect the

shielding to the connector housing.

6. Keep the connection surface at both shielding ends as large as

possible. Connect the cable clamps to function as a ground.

7. Keep all non-shielded leads as short as possible.

8. Keep the earth connection as short as possible with a large cross

section. Avoid ground loops.

9. With potential differences between machine and electronics

earth connections, no compensating currents are allowed to flow

across the cable shielding. Recommendation: Install potential

compensating leads with large cross section or use cables with

separate double shielding, and connect only one end of the shield.

10. Use only stabilized power supplies in compliance with the

specified connecting values

Level Plus

LLE

Operation Manual