Owner's manual

7 TECHNICAL DATA
40
TT 51 SERIES
www.krohne.com 09/2010 - 4000754201 - MA TT 51 R01 en
7.2 Technical data
INFORMATION!
• The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local representative.
• Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Download Center).
Measuring system
Application range Temperature, resistance or voltage measurements of solids, liquids and
gases in industrial environment.
Design
Versions
VersionsVersions
Versions
TT 51 C In-head transmitters which are intended for installation in a "B connection
head" or larger according to DIN 43729.
This transmitter is optionally available in a non-incendive version (zone 2)
and in an intrinsically safe version (zone 0, 1 and 2) for installation in
potentially explosive atmospheres.
TT 51 R Rail-mount transmitters which are intended for installation on a rail
according to DIN 50022 / EN 60715.
This transmitter is optionally available in a non-incendive version (zone 2)
and in an intrinsically safe version (zone 1 and 2) for installation in
potentially explosive atmospheres.
Features
FeaturesFeatures
Features
SIL 2 compliance Based on a hardware assessment acc. to IEC 61508-2, consisting of a
FMEDA done by exida, the transmitters are suitable for use in SIL 2 rated
Safety Instrumented Systems (SIS).
HART
®
6 compliance The transmitters are fully compliant with the HART
®
6 protocol as well as
the previous HART
®
5. HART
®
6 offers the possibility to receive diagnostic
information such as sensor errors or sensor conditions, input wiring
resistance too high, sensor backup mode, transmitter error, etc.
Sensor backup Dual-sensor input allows for backup between two sensors. Should a lead
break or short-circuit be detected on one of the sensor circuits, an
automatic switchover to the intact sensor will occur.
Sensor drift monitoring If an RTD or thermocouple with double sensor elements is used, sensor drift
can be detected by checking the reading from both elements. If the
difference is above a user-defined level, this will be indicated in ConSoft and
with a diagnostic HART
®
message, and the output signal can be forced
upscale or downscale.
Sensor isolation monitoring The isolation resistance of thermocouples and RTD’s as well as the cabling
between sensor and transmitter is being monitored. If the isolation is below
a user-defined level, this will be indicated in ConSoft and with a diagnostic
HART
®
message, and the output signal can be forced upscale or downscale.
This feature requires an extra lead inside the thermocouple or RTD.
Customized linearization For resistance and mV inputs, the 50-point customized linearization can
provide a correct process value, in a choice of engineering units, for a sensor
with non-linear input/output relation.