Safety instructions
TTR31, TTR35
4
Hauser
1
Safety instructions
1.1 Designated
use
The Thermophant
®
T is a temperature switch for monitoring, displaying and regulating process
temperatures. The device has been safely built with state-of-the-art technology and meets the
applicable requirements and EC Directives. It can, however, be a source of danger if used
incorrectly or for anything other than the designated use.
1.2 Installation, commissioning and operation
Installation, electrical connection, commissioning, operation and maintenance of the measuring
system must be carried out by trained, qualified specialists authorised to perform such work by
the facility's owner-operator. The specialist must have read and understood these Operating In-
structions and must follow the instructions they contain. The device may only be modified and
repair work carried out if this is explicitly permitted in the Operating Instructions. Damaged de-
vices which could be a source of danger may not be commissioned and must be labelled and
identified as defective.
1.3 Operational
safety
The measuring device meets the general safety requirements according to EN 61010-1 and the
EMC requirements according to IEC/EN 61326 in addition to the NAMUR recommendations
NE 21, NE 43 and NE 53.
• Functional safety
The Thermophant
®
T temperature switches were developed according to the standards IEC
61508 and IEC 61511-1 (FDIS). The device version with PNP switch output and additional
analog output is equipped with fault detection and fault prevention facilities within the
electronics and software.
• Ex-area
The Thermophant
®
T is not approved for use in Ex-areas.
1.4 Return
The following procedures must be carried out before a device is returned to Hauser:
• Always enclose a fully completed “Declaration of Contamination” form with the device. Only
then can Hauser transport and examine a returned device. A copy of the “Declara-
tion of Contamination” can be found on the second last page of these Operating Instructions.
• Remove all fluid residues. This is particularly important if the fluid is hazardous to health, e.g.
flammable, toxic, caustic, carcinogenic, etc.
#
Warning!
Do not return a measuring device if you are not absolutely certain that all traces of hazardous
substances have been removed, e.g. substances which have penetrated crevices or diffused
through plastic.
