ProMinent Hydro/4 Operating Instructions Manual page 31

Overpressure sensor
WARNING!
In the area at risk from explosion:
– For the Namur sensor NJ1,5-8GM-N, also note the
details of the type examination certificate PTB 00 ATEX
2048 X.
– Connect the diaphragm rupture sensor (of intrinsically
safe circuit type 2) using these maximum values: Ui = 16
V, Ii = 25 mA, Pi = 64 mW.
WARNING!
Danger of electric shock
In event of a defect, there is a risk of electric shock when
conductive feed chemical are used.
– For safety reasons we recommend connecting to a pro‐
tective low voltage, e.g. in accordance with EN 60335-1
(SELV ).
CAUTION!
Danger resulting from unnoticed diaphragm rupture
If the pump has been ordered with an electric overpressure
sensor, it must also be electrically installed.
– Install and electrically connect the enclosed overpres‐
sure sensor to a suitable monitoring device.
a) Overpressure sensor - 42 V diaphragm pressure switch
The cable can be connected as required.
–
a) Overpressure sensor - ATEX pressure switch
(precise type: EDS 4448-0060-P-AN3- 004)
The type code is located in the enclosed manual on page 14.
WARNING!
During installation pay attention to the accompanying manual
"HYDAC Operating manual pressure switch series EDS
4400 with ATEX approval", in particular in respect of:
– Potential equalisation along the intrinsically safe circuit
page 4
– Conduit installation page 4
– Checking of the seals page 6
– Approved barriers page 8
– Dimensioning of U
– Permissible connector plug
Installation
and I page 9
min max
31