KROHNE LS 72xx EN - Manual (Page 3)

02/2013 LS 72xx 3
Items supplied
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• Measuring
instrument
• Hygienic
adapter
•
Installation and operating instructions
System description
Inputting physical quantities into an SPC or PLC or other computer and control systems requires
accurate and reliably working sensors. The sensor is a detecting element that converts physical
quantities, such as temperature, level, pressure, conductivity, turbidity and flow, into an electrical
signal. Locally further processed, usually by an integrated microcontroller, the measuring signal can
be transmitted by analogue (e.g. 4...20mA loop) or digital (e.g. Profibus PA) means.
The conductive mono-rod-level sensors of the LS Series are designed to detect the level of
conductive liquids. Since the rod electrodes can be shortened to any required length, this allows
flexibility in the choice of the operating point.
Product liability and warranty
The instrument is designed solely for detecting the interface between conductive liquids.
Responsibility as to suitability and intended use of this instrument rests solely with the operator.
Improper installation and operation of the instrument / system may lead to loss of warranty.
In addition, all claims are subject to the “General terms and conditions of sale” under which this
instrument was purchased.
If a meter or instrument needs to be returned to KROHNE, please note the information given on the
last-but-one page of these Instructions.
KROHNE regrets that it cannot repair or check your instruments unless accompanied by a fully
completed Service and Repair sheet.
CE / EMC / Standards / Approvals
(applicable only with integrated electronic evaluator)
The product bears the CE marking on account of compliance with and application of the following
standards:
EMCG (89/336/EEC)
EN 50081-1
EN 55022 Class B
EN 61000-6-2 EN 61000-4-2 ESD 4/8 kV
EN 61000-4-3 RF radiated 10 V/m
EN 61000-4-4 Burst 4 kV
EN 61000-4-5 Surge 1 kV sym., 2 kV unsym.
EN 61000-4-6 RF cable 10 V