Product Description; 3.1 Configuration; Principle Of Operation - Vega B63-48 Operating Instructions Manual

3 Product description

Scope of delivery
Constituent parts
Application area
Functional principle
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3 Product description
3.1 Configuration
The scope of delivery encompasses:
•
Overvoltage arrester B63-48, B63-32
•
Documentation
– this operating instructions manual
– Ex specific safety instructions and, if necessary, further certifi-
cates
The following illustration shows the structure of B63-48, B63-32:
Fig. 1: Structure of B63-48, B63-32
1 Terminals for the signal cable input (unprotected side)
2 B63-48, B63-32
3 Signal cable output to the sensor (protected side)
3.2

Principle of operation

The overvoltage arresters B63-48, B63-32 are completely enclosed in
a stainless steel housing. They can be used for VEGA level and pres-
sure sensors in two-wire technology.
•
Type B63-48 for 4 ... 20 mA/HART sensors
•
Type B63-32 for Profibus PA and Foundation Fieldbus sensors
B63-48, B63-32 overvoltage arresters reduce any voltage surges that
may reach the signal cables to a harmless level. The devices contain
voltage-limiting components as well as gas conductors for bleeding
off impulses of up to 10 kA to ground.
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Overvoltage arresters • B63-48, B63-32