24
11041781.04 01/2020 EN/DE
Pressure gauge with reed contact model 851-A, for Ex areas
EN
Safety instructions for installation
■
Install instruments in accordance with the manufacturer's
instructions and the valid standards and regulations.
■
Only connect circuits with the same voltage and type of
protection to the switch contacts and connection leads of the
instrument.
■
Limit the maximum current, using external measures, to a
value of ≤ 100 mA per circuit.
■
Size the connection leads for the largest current strength in the
circuits and ensure sufficient UV resistance and mechanical
stability.
■
With flexible connection leads, use isolated end splices. Max.
permissible conductor cross-section 1.5 mm².
■
Connection leads must be suited to the ambient temperature
range of the application.
■
The connection leads must also be suitable for the supplied
cable gland.
■
Seal the cable entry with the appropriate approved cable
glands.
■
Install the connection cables securely.
11449056.01
Cable outlet
5. Commissioning, operation
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