23
11041781.04 01/2020 EN/DE
Pressure gauge with reed contact model 851-A, for Ex areas
EN
Gaseous media
Filling of the
measuring line
Gaseous
Partially
condensed
(damp)
Completely
condensed
Examples
Dry air
Moist air,
flue gases
Steam
Pressure gauge
above the
tapping point
Pressure gauge
below the
tapping point
5.2 Electrical connection
The electrical connection must only be made by qualified skilled
personnel. Connection details and switching functions are given
on the product label. Connection terminals and ground terminal
are appropriately marked. The instrument must be connected to
the equipotential bonding of the plant.
For power ratings (see “Specifications”) and for circuit protection
for inductive and capacitive loads see chapter 5.3 “Contact
protection measures”.
5. Commissioning, operation
