4
1 Preliminary note
1.1 Symbols used
►
Instruction
>
Reaction, result
[…] Designation of buttons, switches or indications
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Cross-reference
Important note
Non-compliance can result in malfunctions or interference�
2 Safety instructions
• Please read this document prior to installing the unit� Ensure that the product is
suitable for your application without any restrictions�
• Work on compressed air equipment as well as mounting, setting for operation
and set-up of the unit must be carried out by suitably qualified personnel� When
doing so, state of the art, safety and accident prevention regulations must be
adhered to�
• Ensure that the installation is at a standstill and no pressure is applied before
mounting components into or removing them from compressed air equipment�
• Improper or non-intended use may lead to malfunctions of the unit or to
unwanted effects in your application� That is why installation, electrical con-
nection, set-up, operation and maintenance of the unit must be carried out by
qualified personnel authorised by the plant operator�
• In all applications test the compatibility of the product materials (→ 12 Techni-
cal data) with the media to be measured�
For the scope of validity cULus: The device shall be supplied from an isolating
transformer having a secondary Listed fuse rated as noted in the following table�
Overcurrent protection
Control-circuit wire size
Maximum protective device rating
Ampere
AWG
(mm
2
)
26
(0�13)
1
24
(0�20)
2
22
(0�32)
3
20
(0�52)
5
18
(0�82)
7
16
(1�3)
10
