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Physikalisch-Technische Bundesanstalt
Braunschweig und Berlin
(13)
(14)
(15) Description of Equipment
The Model 4746-8 . . . Limit Switch servers for converting mechanical manipulated variables into
electrical signals. It is intended for attachment to pneumatic, electrical or hydraulic actuators.
The device is intended for use inside and outside of Category 3 hazardous locations.
The correlation between temperature classification and permissible ambient temperature ranges is
shown in the table below:
Electrical data
Versions:
With inductive proximity switch
Contact circuit
(terminals 41/42, 51/52)
a.)
With electrical proximity switch
Contact circuit
(terminals 41/42/43, 44/45/46,
51/52/53)
(16) Test report PTB Ex 02-21299
(17) Special conditions for safe use
The Modell 4746-8 . . .Limit Switch shall be installed in an enclosure providing at least Degree of
Protection IP 54 in compliance with IEC Publication 60529:1989.
The wiring shall be connected in such a manner that the connection facility is not subjected to pull an
twisting.
Schedule to the Statement of Conformity PTB 02 ATEX 2012 X
(18) Basic health and safety requirements
Are satisfied by compliance with the standard specified..
Zertifizierungsstelle Explosionsschutz
By order
(Signature)
Dr. Ing. U. Klausmeyer
Regierungsdirektor
Ptb08Ex n.doc
14-22
S c h e d u l e
Statement of Conformity PTB 02 ATEX 2012 X
Temperature class
T5
T6
T4
(seal)
Statements of conformity without signature and seal are invalid.
This Statement of conformity may be reproduced only in its entirety and without any changes, schedule.
Extracts or changes shall require the prior approval of the Physikalisch-Technische Bundesanstalt.
Physikalisch-Technische Bundesanstalt., Bundesallee 100, D-38116 Braunschweig
Ambient temperature range
-45°C . . .+70°C
-45°C . . .+60°C
-45°C . . .+80°C
Type of protection EEx nA II
Type of protection EEx nA II
Braunschweig, 05.April 2002
EB 8365 FR
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