Safety Notes When Connecting In Hazardous Areas - Siemens SITRANS TH100 Operating Instructions Manual

Connecting
5.1 Safety information when connecting
NOTICE
Ambient temperature too high
Damage to cable sheath.
● At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an
5.1.1

Safety notes when connecting in hazardous areas

Improper power supply
Danger of explosion in hazardous areas as result of incorrect power supply, e.g. using direct
current instead of alternating current.
● Connect the device in accordance with the specified power supply and signal circuits. The
NOTICE
Limited range of use
If the device has been operated outside the ambient conditions specified for potentially
explosive atmospheres, you may no longer operate the device in potentially explosive
atmospheres. Make sure to permanently mask all Ex markings on the nameplate.
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
Maximum values of the auxiliary power supply and signal circuits:
U = 30 V DC
i
L = 106 μH
i
18
ambient temperature at least 20 °C (68 °F) higher.
WARNING
relevant specifications can be found in the certificates, in Chapter "Technical data
(Page 31)" or on the nameplate.
certified as intrinsically-safe.
I = 100 mA
i
C = 7.3 nF
i
Operating Instructions, 09/2013, A5E00331168-04
P = 750 mW
i
SITRANS TH100