Edwards Barocel 7025, Инструкция по эксплуатации

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Page 15
W602100880_A - Installation
Figure 3
Connect the gauge to the system
Electrical connection
Make sure the vacuum connection is correct.
Ground loops, differences of potential, or EMC problems can affect the measurement signal.
For optimum signal quality:

Connect the cable shield to ground on one side through the chassis ground. Do not
connect the other side of the shield.

Connect the supply common with protective ground directly at the power supply.

Use differential measurement input (signal common and supply common wired
separately).

Potential difference between supply common and housing

18 V (over-voltage
protection).
1. Clamp
2. Seal with centring ring
3. Seal with centring ring and filter
4. Protective lid
WARNING: HIGH VOLTAGE
Risk of electric shock. The gauge can only be connected to power supplies, instruments or
control devices that agree to the requirements of a grounded Protective Extra-Low
Voltage (PELV) and Limited Power Source (LPS), Class 2. The connection to the gauge has
to be fused.
*
*
Edwards controllers meet this requirement.