General specications SITRANS TH320/420/TR SITRANS TF
Insulation voltage, test/operation
2.5 kVAC / 55 V AC
2.5 kV
AC / 42 V AC(Ex i)
Polarity protection All inputs and outputs
Write protection Jumper or software
Warming-up time < 5 min.
Starting time < 2.75 s
Programming SIPROM T or HART
Signal-to-noise ratio > 60 dB
Long-term stability, better than ± 0.05% of measuring span/year
± 0.18% of measur
ing span/5 years
Response time
• 4 to 20 mA
≤ 55 ms
• HART
≤ 75 ms (typically 70 ms)
Damping 0 ... 60 s
Signal dynamic, input 24 bit
Signal dynamic, output 18 bit
Inuence of c
hanges in supply voltage < 0.005% of measuring span/V DC
1)
No
te that the minimum supply voltage must correspond to the value measured at the terminals of the SITRANS TH320/TH420
and that all external voltage drops must be taken into consideration.
2)
Protect the device from overvoltage with the help of a suitable supply voltage or suitable overvoltage protection equipment.
8.2.4 Certicates and approvals
8.2.4.1 ATEX/IECEx and others
Certicate numbers
Only the technical specications listed in the certicates (
http://www.siemens.com/
processinstrumentation/certicates) appl
y to applications in hazardous atmospheres.
ATEX/IECEx and others SITRANS TH320/420/TR SITRANS TF Display
Certicate number
s
DEKRA 17 ATEX 0116 X DEKRA 19ATEX0106X
A5E50642461A
-2021X
DEKRA 19ATEX0105 X
A5E43700604A-2018X DEKRA 19ATEX0107X
DEKRA 19A
TEX0108X
A5E50485541A-2020X
IECEx DEK 17.0054X IECEx DEK 19.0069X
IECEx DEK 19.0070X
IECEx DEK19.0068X
Technical data
8.2 SITRANS TH320/TH420/TR320/TR420/TF320/TF420
SITRANS TH100/TH100Slim/TH320/TH420/TR320/TR420/TF320/TF420
82 Compact Operating Instructions, 07/2021, A5E41865021-AE