Specifications

2/5
Siemens FI 01 · 2015 US Edition
Temperature Measurement
Transmitters for mounting in sensor head
SITRANS TH100 two-wire system (Pt100)
2
■ Technical specifications
Input
Resistance thermometer
Measured variable Temperature
Sensor type PT100 to IEC 60751
Characteristic curve Temperature-linear
Type of connection 2-, 3- or 4-wire circuit
Resolution 14 bit
Measuring accuracy
• Span <250 °C (450 °F) < 0.25 °C (0.45 °F)
• Span >250 °C (450 °F)
< 0.1 % of span
Repeatability < 0.1 °C (0.18 °F)
Measuring current approx. 0.4 mA
Measuring cycle < 0.7 s
Measuring range -200 ... +850 °C
-328 ... +1562 °F)
Measuring span 25 ... 1050 °C (77 ... 1922 °F)
Unit °C or °F
Offset programmable:
-100 ... +100 °C (-180 ... +180 °F)
Line resistance Max. 20  (total from feeder and
return conductor)
Noise rejection 50 and 60 Hz
Output
Output signal 4 ... 20 mA, two-wire
Auxiliary power 8.5 ... 36 V DC
(30 V for Ex ia and ib;
32 V for Ex nL/ic; 35 V for Ex nA)
Max. load (U
aux
- 8.5 V)/0.023 A
Overrange 3.6 ... 23 mA, infinitely adjustable
(default range: 3.84 ... 20.5 mA)
Error signal (following sensor fault)
(conforming to NE43)
3.6 ... 23 mA, infinitely adjustable
(default range: 3.6 mA or 22.8
mA)
Damping time
0 ... 30 s (default value: 0 s)
Protection
Against reversed polarity
Resolution 12 bit
Accuracy at 23 °C (73.4 °F) < 0.1 % of span
Temperature effect
< 0.1 %/10 °C (0.1 %/18 °F)
Effect of auxiliary power
< 0.01 % of span/V
Effect of load impedance < 0.025 % of max. span/100 
Long-term drift
• < 0.025 % of the max. span in
the first month
• < 0.035 % of the max. span after
one year
• < 0.05 % of the max. span after
5 years
Ambient conditions
Ambient temperature range -40...+85°C (-40...+185°F)
Storage temperature range -40 ... +85 °C (-40 ... +185 °F)
Relative humidity 98 %, with condensation
Electromagnetic compatibility According to EN 61326 and
NAMUR NE21
Construction
Weight 50 g
Dimensions See dimensional drawing
Material Molded plastic
Cross-section of cables Max. 2.5 mm
2
(AWG 13)
Degree of protection to IEC 60529
• Enclosure IP40
• Terminals IP00
Certificates and approvals
Explosion protection ATEX
EC type test certificate PTB 05 ATEX 2049X
• "Intrinsic gas safety" type of pro-
tection
II 1 G Ex ia IIC T6/T4
II (1) 2 G Ex ib [ia Ga] IIC T6/T4 Gb
II (1) 3 G Ex ic [ia Ga] IIC T6/T4 Gc
II 3 G Ex ic IIC T6/T4 Gc
• "Non-sparking" type of protection II 3 G Ex nA IIC T6/T4 Gc
II 3 G Ex nA[ic] IIC T6/T4 Gc
• "Intrinsic dust safety" type of pro-
tection
II 1 D Ex ia IIIC T115 °C Da
Explosion protection FM for USA
and Canada (
c
FM
US
)
• FM approval PID 3024169
• Degree of protection
IS Cl I, II, III, Div 1, GP ABCDEFG
T4/T5/T6
Cl I, ZN 0,1 AEx ia IIC T4/T5/T6
NI Cl I, II, III, Div 2, GP ABCDFG
T4/T5/T6
Cl I, ZN 2, NI IIC T4/T5/T6
Other certificates GOST, NEPSI, PESO
Software requirements for
SIPROM T
PC operating system Windows ME, 2000, XP, Win 7 and
Win 8; can also be used in con-
nection with RS 232 modem
under Windows 95, 98 and 98SE
© Siemens AG 2015