2.3 Manufacturer and service
Turck supports you in your projects – from the initial analysis right through to the commissioning of your applica-
tion. The Turck product database offers you several software tools for programming, configuring or commission-
ing, as well as data sheets and CAD files in many export formats. You can access the Product Database directly via
the following address: www.turck.de/produkte
For further inquiries in Germany contact the Sales and Service Team on:
Sales: +49 208 4952-380
Technical: +49 208 4952-390
For overseas inquiries contact your national Turck representative.
Hans Turck GmbH & Co. KG
45466 Mülheim an der Ruhr
Germany
3 For your safety
The device is designed according to the latest state-of-the-art technology. Residual hazards, however, still exist.
Observe the following warnings and safety regulations in order to prevent danger to persons and property. Turck
accepts no liability for damage caused by failure to observe regulations.
3.1 Intended use
Isolating transducers are used to operate (intrinsically safe) active or passive 2-wire or passive 3-wire transmitters.
The galvanically isolated (intrinsically safe) analog measuring signal is transmitted from the field to the control-
ler. Besides the analog signal, HART® signals can also be transmitted bidirectionally. The devices are designed for
input/output circuits of 0/4…20mA. The input signals are transmitted 1:1. A wire break is detected at an input cur-
rent <3.6mA and a short circuit at an input current >21.5mA in accordance with NE requirements, and indicated
accordingly as an output value.
These devices also enable the creation of safety-related systems up to and including SIL2 according to IEC 61508
(hardware fault tolerance HFT = 0). The devices must only be used in safety-related systems if all requirements
stated in this safety manual and the EXIDA report are strictly observed. The information in the EXIDA report applies
when IEC 61508 is used for applications with a low demand mode (device type A for low demand mode). When
used in safety systems, the probability of dangerous failure (PFD) for the entire circuit must be determined and
given due consideration.
3.2 Obvious misuse
When using dual-channel devices in safety circuits, the second channel must not be used to increase the hardware
fault tolerance and thus achieve a higher SIL level.
The IM33-…Ex-HI/24VDC isolating transducers can be installed in zone 2 in accordance with the ATEX Directive;
the IM33-11-HI/24VDC and IM33-22-HI/24VDC isolating transducers must not be installed in explosion hazardous
areas in accordance with the ATEX Directive.
3.3 SIL registration card
NOTE
With safety-related applications, the SIL registration card enclosed with the device must be filled in completely by
the user and returned to Turck without fail.
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