wtw DIQ/S 282, Operating Manual, Page: 17 / 186

DIQ/S 28X Safety
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2.2 Safe operation
2.2.1 Authorized use
The authorized use of the DIQ/S 28X Universal Transmitter consists of its use
in online analysis. Only the operation and running of the sensor according to the
instructions and technical specifications given in this operating manual is autho-
rized (see chapter 10 T
ECHNICAL DATA
). Any other use is considered unauthor-
ized.
2.2.2 Requirements for safe operation
Note the following points for safe operation:
 The product may only be operated according to the authorized use specified
above.
 The product may only be operated under the environmental conditions men-
tioned in this operating manual.
 The product may only be supplied with power by the energy sources men-
tioned in this operating manual.
 The product may only be opened if this is explicitly described in this operating
manual (example: connecting electrical lines to the terminal strip).
2.2.3 Unauthorized use
The product must not be put into operation if:
 it is visibly damaged (e.g. after being transported)
 it was stored under adverse conditions for a lengthy period of time (storing
conditions, see chapter 10 T
ECHNICAL DATA
).
2.3 User qualification
Target group The IQ S
ENSOR
N
ET
System 28X was developed for online analysis. Some
maintenance activities, e.g. changing the membrane caps in D.O. sensors,
require the safe handling of chemicals. Thus, we assume that the maintenance
personnel is familiar with the necessary precautions to take when dealing with
chemicals as a result of their professional training and experience.
Special user
qualifications
The following installation activities may only be performed by a qualified electri-
cian:
 Connection of the DIQ/S 28X to the power supply.
 Connection of external, line voltage-carrying circuits to relay contacts (see
module manual of the relay output module).