Siemens SITRANS T4200, Operating Instructions Manual

Page: 26 / 100

Connecting
5.1 Safety notes on the connection
SITRANS TH200/TH300
Operating Instructions, 06/2010, A5E00393069-03
25
Zone 0 and Zone 1 in type of protection "i" - intrinsic safety
● Only connect the transmitter, in accordance with the certificate of compliance, to devices
certified as intrinsically-safe.
Maximum values of the auxiliary power supply and signal circuits:
U
i
= 30 V DC I
i
= 100 mA P
i
= 750 mW
L
i
= 106 μH C
i
= 13 nF
Maximum values of the sensor circuit:
U
0
= 6 V DC I
0
= 25 mA P
0
= 37 mW
L
0
[mH] 50 10 1 0,1
C
0
[μF] 1 1,6 2,6 4,8
● If the connection head is made of aluminum, the requirements of EN 60079-26, section
4.3.3, must be observed for uses where the device category 1 G is required.
Zone 2 in type of protection "nL" or "ic" - limited energy resources
● Install the transmitter in an enclosure meeting the degree of protection IP54 per EN
60529, e.g. in a type B connection head per DIN 43729.
● Only connect the transmitter to devices that have at least been approved as
"nL" or "ic" certified devices (limited energy resources) of Category 3.
● Be sure to observe the respective values.
Maximum values of the auxiliary power supply and signal circuits:
U
i
= 32 V DC I
i
= 100 mA P
i
= 750 mW
L
i
= 106 μH C
i
= 13 nF
Maximum values of the sensor circuit:
U
0
= 6 V DC I
0
= 25 mA P
0
= 37 mW
L
0
[mH] 50 10 1 0,1
C
0
[μF] 1,9 2,8 4,5 8,3