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�
• Improper or non-intended use may lead to malfunctions of the unit or to un-
wanted effects in your application�
• That is why installation, electrical connection, set-up, operation and mainte-
nance 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 units with cULus approval and 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
The Sensor shall be connected only by using any R/C (CYJV2) cord, having suit-
able ratings�
