3 | Installation and assembly
FISCHER Mess- und Regeltechnik GmbH
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BA_EN_NK10_H_ST4-C
3 Installation and assembly
3.1 Safety guidelines
WARNING
Non-observance of the following safety instructions
Non-observance of the following safety instructions can lead to a dangerous
situation, fatal injuries, series bodily harm or damage.
a) Avoid all risks by observing the following safety instructions.
DANGER! Falling objects
The operator must ensure that any falling objects cannot collide with the in-
stalled unit.
Steps must be taken to prevent
1. sparks being generated on impact.
2. the protection class of the casing is no longer guaranteed.
This can be realised by attaching protective covers, casings etc.
DANGER! Installation regulations
During installation and assembly, the application of specific installation regula-
tions in the respective permits must be observed
(1)
.
3.2 Valid range
0.8 to 1.1 bar abs
-20°C to 60°C
The EC type test is based on atmospheric conditions of 0.8 to 1.1 bar abs and
ambient or medium temperatures of -20°C to 60°C. If the pressure and temper-
ature levels differ, the operator needs to document the suitability in the explo-
sion protection document.
3.3 Process connection
The process connection may be realised by authorized and qualified special-
ized personnel.
The unit is set ex-works for horizontal installation. Only this installation position
is allowed.
Dangers caused by pressure on the instrument are to be prevented with suit-
able measures.
The flange and/or process connections are designed for a working temperature
of max. 400 °C and a working pressure of max. 20 bar.
CAUTION
The data of the flange used may be lower.
Please check the actual data in the technical data section.
There are a range of flanges and welded hexagon nipples with which the device
can be installed on-site. Take care that the side of the device marked
TOP
faces upwards when being installed.
NOTICE! Please check:
▪ The swimmer must be able to move freely in the vertical direction!
▪ Test the switching function using the test button.
(1)
see Attachment
