WIKA T24 - Handbuch (Seite 12)

GB
12 WIKA operating instructions temperature transmitter, model T24
2370242.09 08/2013 GB/D
4. Design and function
4.1 Description
The analogue temperature transmitter is used for converting a
resistance value into a proportional current signal (4 ... 20 mA). The
analogue signal is transmitted to a series-connected logic unit. For
cable break monitoring the logic unit must be capable of recognising
HI alarms (> 21 mA) and LO alarms (< 3.6 mA).
The electrical components of the transmitter are assembled in
a plastic case and completely encapsulated. Due to the internal
analogue signal processing, this transmitter can also be used in multi-
plexed systems.
The temperature transmitter described in these operating instructions
features a galvanic connection internally between the sensor input
and the analogue output. There must not be any external conductive
connection (e.g. via earth) between the connected sensor and the
analogue output!
4.2 Scope of delivery
Cross-check scope of delivery with the delivery note.
5. Transport, packaging and storage
5.1 Transport
Check the instrument for any damage that may have been caused
during transportation. Obvious damage must be reported immediately.
5.2 Packaging
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during
transport (e.g. change in installation site, sending for repair).
4. Design and function / 5. Transport, ...