4
1 Preliminary note
1.1 Symbols used
► Instruction
> Reaction, result
[…] Designation of buttons, switches or indications
→ 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�
• 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�
• Inallapplicationstestthecompatibilityoftheproductmaterials(→12Techni-
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 either
a) max 5 amps for voltages 0~20 Vrms (0~28�3 Vp) or
b) 100/Vp for voltages of 20~30 Vrms (28�3~42�4 Vp)�
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