F 6220 (0625)
302
4 Operating Instructions for F 6220
4.1 Usage
The module can be used to measure temperatures with low-resistance thermocouples. As ref-
erence junction temperature serves a PT 100. The thermocouples can be installed in hazard-
ous areas up to zone 0.
Digitized process signals are available in the HIMA PES.
4.2 Electrical data regarding intrinsic safety
The respective indications can be learnt from the enclosed EC type examination certificate.
4.3 Assembling
The module must be installed out of the hazardous area.
The modules shall be installed in 19 inches I/O subracks. The mounting position can be hori-
zontal or vertical.
There are no installation instructions, any modules can be equipped together without free slots
between.
4.4 Application hints for explosion protection
The relevant standards shall be observed, particularly:
• DIN EN 60079-14 (VDE 0165, part 1)
• EN 50014
• EN 50020
Besides that the following points shall be observed:
• The modules inclusive the connection facilities must be installed with a minimum
degree of protection IP 20 according to EN 60529 (VDE 0470 part 1).
• The specified ambient temperature for the explosion protection is
T = -25 °C to +60 °C.
• Two intrinsically safe input circuits from two thermocouple input modules Type F 6220
or some intrinsically safe input circuits from one thermocouple input module can be
connected together. The calculation must use the reduced values for the max. inductiv-
ity.
• The separation between intrinsically safe and non-intrinsically safe terminals must have
a distance of
≥ 50 mm (filament dimension).
• The separation between two intrinsically safe terminals must have a distance of
≥ 6 mm (filament dimension).
• Intrinsically safe and non-intrinsically safe lines and cables must be installed separately
or the intrinsically safe lines must be additionally insulated.
• Intrinsically safe lines and cables must be marked, for example with light-blue colored
The inputs must not apply with external voltage. Beside all not
described applications are not admissible.
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