Siemens SITRANS TK, Operating Instructions Manual

Page: 32 / 56

Operating instruction 7NG312*--1JN01, 7NG312*--2JN01
30
SITRANS TK/TK-H
A5E00226012--02
Sampling cycle 0.5 s nominal
1.0 s in the case of Ohm Hi and Volt Hi
Attenuation Software filter of the 1st order
0 to 30 s in the case of SITRANS TK
0 to 15 s in the case of SITRANS TK-H
Electrical isolation The input and output are electrically isolated
Auxiliary power Maximum DC 35 V
Test voltage U
rms
= 3.75 kV
rms
, 50 Hz, 1 min
Insulation 500 V
ac
Auxiliary power in the case of SI-
TRANS TK
DC 6.5 to 35 V (28 V at EEx ia version)
Auxiliary power in the case of SI-
TRANS TK-H
DC 8 to 35 V (28 V at EEx ia version)
Ambient conditions
Ambient temperature range --40 to +85
°
C (--40 to +185
°
F)
Storage temperature range --40 to +85
°
C (--40 to +185
°
F)
Relative humidity
≤
98 %, with condensation
Measuring accuracy
Reference conditions
Auxiliary power 24 V

1 %
Load 500
Ω
Ambient temperature --40 to +85
°
C (--40 to 185
°
F)
Warm up time
>
5 min
Error of measurement
Digital measuring error See table on page 31
Analog output error
(D/A conversion)
<
0.1 % of the measuring span
Error caused by internal reference
junction
<
0.5 K (0.9
°
F)
Temperature drift

0.01 %/
°
C; typ.

0.003 %/C
(

0.0055 %/
°
F: typ.

0.00166 %/
°
F)
Influence of the supply voltage on
the zero point
<
0.005 % of the measuring span/V
Influence of the supply voltage on
the measuring span
<
0.005 % of the measuring span/V
Long-term drift
<
0.03 % in the first month
Electromagnetic compatibility
Interference immunity and emitted in-
terference
According to EN 61326 and NAMUR NE21
Error caused by EMC influences
<
1 %
Certificates and approvals
Explosion protection ATEX
•
“Intrinsic. safe” type of protection
-- EC-Type Examination Certificate
•
“Flame-proof enclosure” type of pro-
tection
-- EC-Type Examination Certificate
Explosion protection according to FM
II 1 G EEx ia IIC T5/T6
DEMKO 03 ATEX 134603X
II 3 G EEx nA IIC T5/T6
DEMKO 03 ATEX 134604X
Certificate of Compliance 3017742
Housing
Material Plastic, cast
Weight 50 g (0.11 lb)
Cross-section of connecting leads max. 2.5 mm
2
(0.003875 in
2
)