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BG 5035 BEN / B (2014-08) APR 250 ... 267.oi
DANGER
The gauge must be electrically connected to the grounded
vacuum chamber. The connection must conform to the re-
quirements of a protective connection according to EN 61010:
•
CF and VCR flanges fulfill this requirement
•
For gauges with KF flanges, use a a conductive metallic
clamping ring
If the gauge is used with a
Pfeiffer Vacuum measurement
unit for Compact gauges, a
corresponding connection cable
is required (
→
14).
•
Secure the connector on the
gauge with a screw.
Caution
Set the full scale value of the gauge used on your evaluation unit
(
→
corresponding
).
The gauge can also be operated with other evaluation units. In this case, an
individual connection cable must be made.
For cable lengths up to 10 m (with a conductor cross section of 0.34 mm
2
), the
measuring signal can be read directly between the positive signal output (pin 2)
and the supply common (pin 5) without the degree of accuracy being lowered. For
longer measurement cable lengths, we recommend a differential measurement
between the signal output and the signal common (pin 3) (as a result of the voltage
drop along the supply cable ground lead, the common mode signal is approx. 1.0 V
for the maximum admissible cable length).
Prepare the connection socket
(ordering number
→
14).
3.2 Electrical Connection
3.2.1 Use With a
Pfeiffer Vacuum
Measurement Unit
3.2.2 Use With Another
Evaluation Unit
Procedure
