Siemens SITRANS TW 7NG3242 Betriebsanleitung Seite 119

Auxiliary power
Universal power supply unit
Tolerance range for power supply
• With 115/230 V AC/DC PSU
• With 24 V AC/DC PSU
Tolerance range for mains frequency
Power consumption with
• 230 V AC
• 230 V DC
• 24 V AC
• 24 V DC
Electrically isolated
Electrically isolated circuits
Working voltage between all electri-
cally isolated circuits
Measuring accuracy
Accuracy
• Error in the internal cold junction
• Error of external cold junction ter-
minal 7NG3092-8AV
• Digital output
• Analog output I or U
AN AN
Influencing effects (referred to the
digital output)
• Temperature drift
• Long-term drift
Influencing effects referred to the
analog output I or U
AN AN
• Temperature drift
• Power supply
• Load with current output
• Load with voltage output
• Long-term drift (start-of-scale val-
ue, span)
Response time ( without electri-
63
cal damping)
Electromagnetic compatibility
SITRANS TW
A5E00054075-05
115/230 V AC/DC or 24 V AC/DC
80 ... 300 V DC; 90 ... 250 V AC
18 ... 80 V DC; 20.4 ... 55.2 V AC
(in each case interruption-resis-
tant up to 20 ms in the complete
tolerance range)
47 ... 63 Hz
d 5 VA
d 5 W
d 5 VA
d 5 W
Input, output, power supply and
sensor fault/limit monitoring out-
put are electrically isolated from
one another. The HART interface
is electrically connected to the
output.
The voltage U between any
rms
two terminals must not exceed
300 V
d 3 °C ± 0.1 °C / 10 °C
(d 5.4 °F ± 0.18 °F / 18 °F)
d 0.5 °C ± 0.1 °C / 10 °C
(d 0.9 °F ± 0.18 °F / 18 °F)
See "Digital error"
d 0.05 % of the span plus digital
error
Compared to the max. span:
d 0.08 % / 10 °C (d 0.08 % /18 °F)
d 0.2 % in the range
-10 ... +60 °C (14 ... 140 °F)
d 0.1 % / year
Compared to the span:
d 0.08 % / 10°C (d 0.08 % / 18 °F)
d 0.2 % in the range
-10 ... +60 °C (14 ... 140 °F)
d 0.05 % / 10 V
d 0.05 % on change from 50 : to
650 :
d 0.1 % on change in the load
current from 0 mA to 10 mA
d 0.03 % / month
d 0.2 s
According to EN 61 326 and
NAMUR NE21
Certificates and approvals
ATEX
Intrinsic safety to EN 60079-11
for 7NG3242-.A.../.B...
EC type-examination certificate
Other certificates
Conditions of use
Installation conditions
Location (for devices with explosion
protection)
• Transmitters
• Sensor
Ambient conditions
Permissible ambient temperature
Permissible storage temperature
Climatic class
• Relative humidity
Design
Weight
Enclosure material
Degree of protection to IEC 529
Degree of protection to VDE 0100
Type of installation
Electrical connection / process con-
nection
Parameterization interface
Protocol
Load with connection of
• HART communicator
• HART modem
Software for PC/laptop
Technical data
EN 60079-0 : 2009
EN 60079-11 : 2007
EN 61241 : 2006
II (1) G [Ex ia Ga] IIC resp.
II (1) D [Ex ia Da] IIIC
TÜV (German Technical Inspec-
torate) 01 ATEX 1675
GOST, NEPSI
Outside the potentially explosive
atmosphere
Within the potentially explosive
atmosphere zone 1 (also in
zone 0 in conjunction with the
prescribed protection require-
ments for the sensor)
-25 ... +70 °C (-13 ... +158 °F)
-40 ... +85 °C (-40 ... +185 °F)
5 ... 95 %, no condensation
Approx. 0.24 kg (0.53 lb)
PBT, glass-fibre reinforced
IP20
Protection class I
35-mm DIN rail (1.38 inch)
(EN 50022) or 32-mm G-type rail
(1.26 inch) (EN 50035)
Screw plug connectors, max.
2.5 mm² (0.01 inch²)
HART, version 5.9
230 ... 650 :
230 ... 500 :
SIMATIC PDM version V5.1 and
later
119