SITRANS T measuring instruments for temperature 3

© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
■ Overview
■ Function
Configuration
The communication capability over the HART protocol V 5.9 of
the SITRANS TF with an integrated SITRANS TH300 permits parameterization using a PC or HART communicator (hand-held
communicator). The SIMATIC PDM makes it easy.
Parameterization is carried out using a PC for SITRANS TF - with
the integrated and programmable SITRANS TH200. Available
for this purpose are a special modem and the software tool
SIPROM T.
3
Mode of operation
Mode of operation of SITRANS TF as temperature transmitter
The sensor signal, whether resistance thermometer, thermocouple or Ω and/or V signal, is amplified and linearized. Sensor and
output side are electrically isolated. An internal cold junction is
integrated for measurements with thermocouples.
The device outputs a temperature-linear direct current of 4 to
20 mA. As well as the analog transmission of measured values
from 4 to 20 mA, the HART model also supports digital communication for online diagnostics, measured value transmission
and configuration.
Our field devices for heavy industrial use
• HART, Universal
• 4 to 20 mA, universal
• Field indicator for 4 to 20 mA signals
The temperature transmitter SITRANS TF works where others
feel uncomfortable.
■ Benefits
• Universal use
- as transmitter for resistance thermometer, thermoelement,
Ω or mV signal
- as field indicator for any 4 to 20 mA signals
• Local sensing of measured values over digital display
• Rugged two-chamber enclosure in die-cast aluminium or
stainless steel
• Type of protection IP67
• Test terminals for direct read-out of the output signal without
breaking the current loop
• Can be mounted elsewhere if the measuring point
- is not easily accessible
- is subject to high temperatures
- is subject to vibrations from the system
- or if you want to avoid long neck tubes and/or protective
tubes
• Can be mounted directly on American-design sensors
• Wide range of approvals for use in potentially explosive atmospheres. "Intrinsically safe, non-sparking and flameproof" type
of protection, for Europe and USA.
• SIL 2 (with order code C20)
■ Application
SITRANS TF can be used everywhere where temperatures need
to be measured under particularly adverse conditions, or where
a convenient local display is ideal. Which is why users from all
industries have opted for this field device. The rugged enclosure
protects the electronics. The stainless steel model is even resistant to sea water and other aggressive elements The inner workings offer high measuring accuracy, universal input and a wide
range of diagnostic options.
3/58
Siemens FI 01 · 2010
SITRANS TF automatically detects when a sensor should should
be interrupted or is indicating a short-circuit. The practical test
terminals allow direct measurement of 4 to 20 mA signals over
an ammeter without interrupting the output current loop.
Mode of operation of SITRANS TF as field indicator
Any 4 to 20 mA signal can be applied to the generous terminal
block. As well as a range of predefined measurement units, the
adjustable indicator also supports the input of customized units.
This means that any 4 to 20 mA signal can be represented as
any type of unit, e.g. pressure, flow rate, filling level or temperature.
Power supply
SITRANS TF
Sensor
TC RTD
SITRANS TH300
1
3
2
A
D
µP
0000
00°C
4
8
9
5
D
Load
A
7
6
1 Analog-to- digital converter
2 Electrical isolation
3 Microprocessor
4 Digital-to-analog converter
5 Power supply
6 PC/Laptop
7 HART modem
8 Digital display (option)
9 Test connector
Operating principle: SITRANS TF with an integrated transmitter and
digital display
© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
■ Technical specifications
Input
Measuring range
Parameterizable (see table "Digital
measuring errors")
Min. measured span
5 ... 25 Ω (see table "Digital measuring errors")
Characteristic
Resistance-linear or special characteristic
Resistance thermometer
Measured variable
Temperature
Sensor type
• to IEC 60751
• to JIS C 1604; a=0.00392 K-1
• to IEC 60751
Pt25 ... Pt1000
Pt25 ... Pt1000
Ni25 ... Ni1000
Units
°C and °F
Thermocouple
Measured variable
Temperature
Sensor type (thermocouples)
Connection
• Normal connection
1 resistance thermometer (RTD) in
2-wire, 3-wire or 4-wire system
• Generation of average value
Series or parallel connection of
several resistance thermometers in
a two-wire system for the generation of average temperatures or for
adaptation to other device types
• Generation of difference
2 resistance thermometers (RTD)
in 2-wire system (RTD 1 – RTD 2 or
RTD 2 – RTD 1)
Interface
• Type B
• Type C
• Type D
Pt30Rh-Pt6Rh to DIN IEC 584
W5 %-Re to ASTM 988
W3 %-Re to ASTM 988
• Type E
• Type J
• Type K
NiCr-CuNi to DIN IEC 584
Fe-CuNi to DIN IEC 584
NiCr-Ni to DIN IEC 584
• Type L
• Type N
• Type R
Fe-CuNi to DIN 43710
NiCrSi-NiSi to DIN IEC 584
Pt13Rh-Pt to DIN IEC 584
• Type S
• Type T
• Type U
Units
Connection
• Standard connection
• Generation of average value
Pt10Rh-Pt to DIN IEC 584
Cu-CuNi to DIN IEC 584
Cu-CuNi to DIN 43710
°C or °F
• Two-wire system
Parameterizable line resistance
≤ 100 Ω (loop resistance)
• Three-wire system
No balancing required
• Four-wire system
No balancing required
Sensor current
≤ 0.45 mA
Response time
≤ 250 ms for 1 sensor with opencircuit monitoring
• Generation of difference
2 thermocouples (TC)
(TC 1 – TC 2 or TC 2 – TC 1)
Open-circuit monitoring
Can be switched off
Response time
Short-circuit monitoring
Can be switched off (value is
adjustable)
≤ 250 ms for 1 sensor with opencircuit monitoring
Open-circuit monitoring
Can be switched off
Measuring range
Parameterizable (see table "Digital
measuring errors")
Min. measured span
10 °C (18 °F)
Characteristic
Temperature-linear or special characteristic
Resistance-based sensors
1 thermocouple (TC)
2 thermocouples (TC)
Cold junction compensation
• Internal
With integrated Pt100 resistance
thermometer
• External
With external Pt100 IEC 60571
(2-wire or 3-wire connection)
• External fixed
Cold junction temperature can be
set as fixed value
Measured variable
Actual resistance
Sensor type
Resistance-based, potentiometers
Measuring range
Units
Ω
Parameterizable (see table "Digital
measuring errors")
Min. measured span
• Normal connection
1 resistance-based sensor (R) in
2-wire, 3-wire or 4-wire system
Min. 50 ... 100 °C (90 ... 180 °F)
(see table "Digital measuring
errors")
Characteristic
• Generation of average value
2 resistance-based sensors in
2-wire system for generation of
average value
Temperature-linear or special characteristic
mV Sensor
Measured variable
DC voltage
2 resistance-based sensor in
2-wire system (R 1 – R 2 or
R 2 – R 1)
Sensor type
DC voltage source (DC voltage
source possible over an externally
connected resistor)
Units
mV
Response time
≤ 250 ms for 1 sensor with opencircuit monitoring
Open-circuit monitoring
Can be switched off
Short-circuit monitoring
Can be switched off (value is
adjustable)
Connection
• Generation of difference
Interface
• Two-wire system
Parameterizable line resistance
≤ 100 Ω (loop resistance)
• Three-wire system
No balancing required
• Four-wire system
No balancing required
Sensor current
≤ 0.45 mA
Response time
≤ 250 ms for 1 sensor with opencircuit monitoring
Measuring range
-10 ... +70 mV
-100 ... +1100 mV
Open-circuit monitoring
Can be switched off
Min. measured span
2 mV or 20 mV
Short-circuit monitoring
Can be switched off (value is
adjustable)
Overload capacity of the input
-1.5 ... +3.5 V DC
Input resistance
≥ 1 MΩ
Characteristic
Voltage-linear or spec. characteristic
Siemens FI 01 · 2010
3/59
3
© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
Output
Certificate and approvals
Output signal
4 ... 20 mA, 2-wire
Explosion protection ATEX
Communication with
SITRANS TH300
to HART Rev. 5.9
• "Intrinsically-safe" type of
protection
Digital display
3
Digital display (optional)
in current loop
Display
max. 5 digits
Digit height
9 mm (0.35")
Display range
-99999 ... +99999
Units
Any (max. 5 char.)
Setting:
Zero point, upper range value and
unit
With 3 keys
• Flame-proof enclosure" type of
protection
Load voltage
2.1 V
Explosion protection to FM
• Identification (XP, DIP, NI, S)
- EC type test certificate
See table "Dig. measuring errors"
Reference conditions
• Auxiliary power supply
24 V ± 1 %
• Load
500 Ω
• Storage temperature
23 °C (73.4 °F)
• Warming-up time
> 5 min
Error in the analog ouput
(digital/analog converter)
< 0.025 % of span
Error due to internal cold junction
< 0.5 °C (0.9 °F)
Temperature effect
< 0.1 % of max. span/10 °C (18 °F)
Power supply effect
< 0.001 % of span/V
Effect of load impedance
< 0.002 % of span/100 Ω
Long-term drift
ZELM 99 ATEX 0007
II 3G EEx nAL IIC T6/T4
• "Operating equipment that is
non-sparking and has limited energy for zone 2" type of protection
- EC type test certificate
Measuring accuracy
Digital measuring errors
- EC type test certificate
With digital indicator:
II 2 (1) G EEx ia IIC T4
Without digital indicator:
II 2 (1) G EEx ia IIC T6
ZELM 99 ATEX 0007
II 2 G EEx d IIC T5/T6
CESI 99 ATEX 079
Certificate of Compliance 3017742
• XP / I / 1/BCD / T5 Ta = 85 °C
(185 °F), T6 Ta = 50 °C (112 °F),
Type 4X
• DIP / II, III / 1 / EFG / T5 Ta = 85 °C
(185 °F), T6 Ta = 50 °C (112 °F),
Type 4X
• NI / I / 2 / ABCD / T5 Ta = 85 °C
(185 °F), T6 Ta = 50 °C (112 °F),
Type 4X
• S / II, III / 2 / FG / T5 Ta = 85 °C
(185 °F), T6 Ta = 50 °C (112 °F),
Type 4X
Hardware and software requirements
• For the parameterization software
SIPROM T for SITRANS TH200
- Personal computer
PC with CD-ROM drive and
USB/RS 232 interface
- PC operating system
Windows 98, NT, 2000, XP
• in the first month
< 0.02 % of max. span
• after one year
< 0.2 % of max. span
• For the parameterization software See chapter 9, "Software",
SIMATIC PDM for SITRANS TH300 "SIMATIC PDM"
• after 5 years
< 0.3 % of max. span
Communication
Rated conditions
Load for HART connection
230 ... 1100 Ω
Ambient temperature
• Two-core shielded
≤ 3.0 km (1.86 mi)
Storage temperature
-40 ... +85 °C (-40 ... +185 °F)
• Multi-core shielded
≤ 1.5 km (0.93 mi)
Condensation
Permissible
Protocol
HART protocol, version 5.x
Electromagnetic compatibility
According to EN 61326 and
NAMUR NE21
Degree of protection to EN 60529
IP67
Design
Approx. weight
Approx. 1.5 kg (3.3 lb), without
options
Dimensions
See "Dimensional drawings"
Enclosure material
Die-cast aluminum, low in copper,
GD-AlSi 12 or stainless steel, polyester-based lacquer, stainless steel
rating plate
Electrical connection,
sensor connection
Screw terminals, cable inlet via
M20 x 1.5 or ½-14 NPT threaded
gland
Mounting bracket (optional)
Steel, galvanized and chromeplated or stainless steel
Power supply
Without digital display
11 ... 35 V DC (30 V with Ex)
With digital display
13.1 ... 35 V DC (30 V with Ex)
Electrically isolated
Between input and output
• Test voltage
U eff = 1 kV, 50 Hz, 1 min
3/60
Siemens FI 01 · 2010
Factory setting (transmitter):
• Pt100 (IEC 751) with three-wire circuit
• Measuring range: 0 ... 100 °C (32 ... 212 °F)
• Fault current 22.8 mA
• Sensor offset: 0 °C (0 °F)
• Damping 0.0 s
© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
Digital measuring errors
Thermocouple elements
Resistance thermometer
Input
Measuring range
Min. measured span
Digital
accuracy
°C (°F)
°C
°C
(°F)
Input
(°F)
according to
IEC 60751
Measuring
range
Min. measured
span
Digital
accuracy
°C(°F)
°C
(°F)
°C
(°F)
Type B
0 ... 1820
(32 ... 3308)
100
(180)
21)
(3.60)1)
Pt25
-200 ... + 850
(-328 ... +1562)
10
(18)
0,2
(0.36)
Type C (W5)
0 ... 2300
(32 ... 4172)
100
(180)
2
(3.60)
Pt50
-200 ... + 850
(-328 ... +1562)
10
(18)
0,15
(0.27)
Type D (W3)
0 ... 2300
(32 ... 4172)
100
(180)
12)
(1.80)2)
Pt100 ... Pt200
-200 ... + 850
(-328 ... +1562)
10
(18)
0,1
(0.18)
Type E
-200 ... +1000
(-328 ... +1832)
50
(90)
1
(1.80)
Pt500
-200 ... + 850
(-328 ... +1562)
10
(18)
0,15
(0.27)
Type J
-210 ... +1200
(-346 ... +2192)
50
(90)
1
(1.80)
Pt1000
-200 ... + 350
(-328 ... +662)
10
(18)
0,15
(0.27)
Type K
-230 ... +1370
(-382 ... +2498)
50
(90)
1
(1.80)
Type L
-200 ... +900
(-328 ... +1652)
50
(90)
1
(1.80)
according to
JIS C1604-81
Pt25
-200 ... + 649
(-328 ... +1200)
10
(18)
0,2
(0.36)
Type N
-200 ... +1300
(-328 ... +2372)
50
(90)
1
(1.80)
Pt50
-200 ... + 649
(-328 ... +1200)
10
(18)
0,15
(0.27)
Type R
-50 ... +1760
(-58 ... +3200)
100
(180)
2
(3.60)
Pt100 ... Pt200
-200 ... + 649
(-328 ... +1200)
10
(18)
0,1
(0.18)
Type S
-50 ... +1760
(-58 ... +3200)
100
(180)
2
(3.60)
Pt500
-200 ... + 649
(-328 ... +1200)
10
(18)
0,15
(0.27)
Type T
-200 ... +400
(-328 ... +752)
40
(72)
1
(1.80)
Pt1000
-200 ... + 350
(-328 ... +662)
10
(18)
0,15
(0.27)
Type U
-200 ... +600
(-328 ... +1112)
50
(90)
2
(3.60)
Ni 25 ... Ni1000
-60 ... + 250
(-76 ... +482)
10
(18)
0,1
(0.18)
1)
2)
The digital accuracy in the range 0 to 300 °C (32 to 572 °F) is 3 °C (5.4 °F).
The digital accuracy in the range 1750 to 2300 °C (3182 to 4172 °F) is
2 °C (3.6 °F).
Resistance-based sensors
Input
Measuring range
Min. measured span
Digital
accuracy
Ω
Ω
Ω
Resistance
0 ... 390
5
0,05
Resistance
0 ... 2200
25
0,25
mV sensors
Input
Measuring range
Min. measured span
Digital
accuracy
mV
mV
µV
mV sensors
-10 ... +70
2
40
mV sensors
-100 ... +1100
20
400
The digital accuracy is the accuracy after the analog/digital
conversion including linearization and calculation of the measured value.
An additional error is generated in the output current 4 to 20 mA
as a result of the digital/analog conversion of 0.1 % of the set
span (digital-analog error).
The total error under reference conditions at the analog output is
the sum from the digital error and the digital-analog error (poss.
with the addition of cold junction errors in the case of thermocouple measurements).
Siemens FI 01 · 2010
3/61
3
© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
■ Dimensional drawings
55
(2.17)
52 (2.05)
28
(1.10)
a
3
36,5 (1.44)
120 (4.72)
1
a: max. 164 (6.46) (M20x1.5)
max. 189 (7.44) (½-14 NPT)
68 (2.68)
4
5
72 (2.83)
8
2
237 (9.33)
80 (3.15)
3
80 (3.15)
100* (3.94)
6
50
(1.97)
117 (4.61)
50* (1.97)
b
20
(0.79)
144 (5.67)
138* (5.43)
13 (0.51)
15* (0.59)
b: max. 25 (0.98) (M20x1.5)
max. 50 (1.97) (½-14 NPT)
*) Dimensions for stainless
steel enclosure
123 (4.84)
Æ 50 ... 60
(1.97 ... 2.36)
7
105 (4.13)
1 Sensor connection (screwed gland M20x1,5 or ½-14 NPT)
2 Blanking plug
3 Electrical connection (screwed gland M20x1,5 or ½-14 NPT)
7 Mounting bracket (option) with clamp for securing to a
vertical or horizontal pipe
4 Terminal side, output signal
8 Cover with window for digital display
5 Terminal side, sensor
SITRANS TF, dimensions in mm (inches)
3/62
6 Protective cover (without function)
Siemens FI 01 · 2010
© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
Selection and Ordering data
Temperature transmitter in field housing
Two-wire system 4 ... 20 mA, with electrical
isolation, with documentation on
CD-ROM
Selection and Ordering data
Order No.
D)
7 NG 3 1 3 7 - 77777
Accessories
Modem for SITRANS TH200
incl. parameterization software T
} 7NG3092-8KU
• with USB interface
Integrated transmitter
• SITRANS TH200, programmable
- without Ex protection
- with EEx ia
- with EEx nAL for zone 2
- total device SITRANS TF EEx d1)
- total device SITRANS TF according to FM
(XP, DIP, NI, S)1)
• SITRANS TH300, communication capability
according to HART V 5.9
- without Ex-protection
- with EEx ia
- with EEx nAL for zone 2
- total device SITRANS TF EEx d1)
- total device SITRANS TF according to FM
(XP, DIP, NI, S)1)
SITRANS TF field indicator
for 4 ... 20 mA signals,
with documentation on CD-ROM
Order No.
C)
5
5
5
5
5
0
1
2
4
5
6
6
6
6
6
0
1
2
4
5
C)
CD for measuring instruments
} A5E00364512
for temperature
with documentation in German, English,
French, Spanish, Italian and Portuguese, and
parameterization software SIPROM T
(included in delivery with SITRANS TF)
0
0
0
0
0
Enclosure
• die-cast aluminium
• stainless steel precision casting
D)
D)
0
1
2
4
5
Y2 2 3)
Y2 3 3)
Y2 4 3)
Test protocol (5 measuring points)
C114)
SIL 2 (functional safety)
C 2 0 5)
7MF4997-1BS
Connection board
A5E02226423
It is not possible to upgrade devices with Ex protection
C) Subject to export regulations AL: N, ECCN: EAR99.
D) Subject to export regulations AL: N, ECCN: EAR99H.
0
1
2
Inscription on measuring-point label
• measuring range (max. 27 characters)
• meas. point description (max. 16 char.)
• measuring point text (max. 27 char.)
7MF4997-1AC
7MF4997-1AB
} 7MF4997-1AJ
7MF4997-1AH
Digital indicator1)
1)
Mounting bracket and securing parts
• without
• made of steel
• made of stainless steel
Y 0 1 2)
see chap. 9
} Available ex stock.
Power supply units see "SITRANS I supply units and input isolators".
0
1
Customer-specific setting of operating data
SIMATIC PDM parameterization software
also for SITRANS TH300
Mounting bracket and securing parts
• made of steel for 7NG313.-..B..
• made of steel for 7NG313.-..C..
• made of stainless steel for 7NG313.-..B..
• made of stainless steel for 7NG313.-..C..
1
1
1
1
1
Digital indicator
• without
• with
Order code
} 7MF4997-1DB
• with USB interface
B
C
Further designs
Please add "-Z" to Order No. and specify
Order code(s) and plain text.
} 7MF4997-1DA
• with RS 232 interface
A
E
Connections/cable inlet
• screwed glands M20x1.5
• screwed glands ½-14 NPT
3
HART modem
7 NG 3 1 3 7 - 77777
• without Ex-protection
• with EEx ia
• with EEx nAL for zone 2
• total device SITRANS TF EEx d1)
• total device SITRANS TF according to FM
(XP, DIP, NI, S)1)
} 7NG3092-8KM
• with RS 232 interface
Factory setting (transmitter):
• Pt100 (IEC 751) with three-wire circuit
• Measuring range: 0 ... 100 °C (32 ... 212 °F)
• Fault current 22.8 mA
• Sensor offset: 0 °C (0 °F)
• Damping 0.0 s
Power supply units see "SITRANS I supply units and input isolators".
1)
2)
3)
4)
5)
Without cable gland.
Y01: Please specify all data that does not correspond to factory settings
(see above) (e.g. Y01 = thermocouple element type K; internal cold junction; 0 ... 800 °C; fault current 3.6 mA).
Y22, Y23, Y24: If no order is placed for Y01, these data are only noted on
the measuring point label and are not programmed in the transmitter.
Can only be ordered together with Y01.
Only with 7NG3135-... and 7NG3136-...
Siemens FI 01 · 2010
3/63
© Siemens AG 2009
SITRANS T measuring instruments for temperature
Transmitter for field mounting/field indicator
SITRANS TF - Transmitter, two-wire system and
- Field indicator for 4 to 20 mA
■ Schematics
Resistance thermometer
Resistance
Two-wire system 1)
Two-wire system 1)
Thermocouple
3
1)
Three-wire system
Three-wire system
Cold junction compensation with
external Pt100 in two-wire system 1)
Four-wire system
Four-wire system
Cold junction compensation with
external Pt100 in three-wire system
Generation of average
value / difference 1)
Generation of average
value / difference 1)
Programmable line resistance for the purpose of correction.
Voltage measurement
SITRANS TF, sensor connection assignment
3/64
Cold junction compensation
Internal/fixed value
Siemens FI 01 · 2010
Current measurement
Generation of average value / difference
with internal cold junction compensation
Open as PDF
Similar pages