1 Safety notes
TMT182
6
Hauser
1
Safety notes
Safe and secure operation of the head transmitter can only be guaranteed if the operating
instructions and all safety notes are read, understood and followed.
1.1
Designated use
Designated use
• The unit is a universal, presettable temperature transmitter for resistance thermometer (RTD),
thermocouple (TC) as well as resistance and voltage sensors. The unit is constructed for mounting
in a connection head (DIN form B) or field housing.
• The manufacturer cannot be held responsible for damage caused by misuse of the unit.
• Separate Ex documentation is part of in this operating manual, for measurement systems in hazar-
dous areas. The installation conditions and connection values indicated in these instructions must
be followed!
1.2
Installation, commissioning and operation
Installation, commissio-
ning and operation
The unit is constructed using the most up-to-date production equipment and complies to the safety
requirements of the local guidelines. The TMT182 temperature transmitter is fully factory tested
according to the specifications indicated on the order. However, if it is installed incorrectly or is
misused, certain application dangers can occur. Installation, wiring and maintenance of the unit
must only be done by trained, skilled personnel who are authorized to do so by the plant operator.
This skilled staff must have read and understood these instructions and must follow them to the let-
ter. The plant operator must make sure that the measurement system has been correctly wired to
the connection schematics.
Electrical temperature sensors such as RTD's and thermocouples produce low-level signals propor-
tional to their sensed temperature. The temperature transmitter converts the low-level sensor signal
to a standard 4 to 20 mA DC signal that is relatively insensitive to lead length and electrical noise.
This current signal is then transmitted to the control room via two wires.
The transmitter can be commissioned before or after installation. It may be useful to commission it
on the bench, before installation, to ensure proper operation and to become familiar with its func-
tionality. Make sure the instruments in the loop are installed in accordance with intrinsically safe or
non-incendive field wiring practices before connecting a HART
®
communicator in an explosive
atmosphere.
The transmitter electronics module is permanently sealed within the housing, resisting moisture and
corrosive damage. Verify that the operating atmosphere of the transmitter is consistent with the
appropriate hazardous locations certifications.
#
Warning!
Electrical shock could cause death or serious injury. If the sensor is installed in a high voltage envi-
ronment and a fault or installation error occurs, high voltage may be present on the transmitter leads
and terminals.
SAFETY INSTRUMENTED SYSTEMS (SIS)
Third party validated metrics are available for the temperature transmitter. Testing is done per
IEC 61508 for Safety Instrumented Systems. The safety manual can be separated ordered separatly
under order code:
SD 006R09EN
.
More details and download see:
www.us.endress.com
