RTD Thermometer omnigrad TST280
Technical Information
TI170T/02/en
No. 58004791
RTD Thermometer
omnigrad TST280
Heavy duty - General purpose - M.I. replaceable inset
with Nipple or Nipple and Union
1/2" NPT male connection to thermowell
TST280 Type N with Nipple
Description
TST280 RTD thermometer assembly
includes a replaceable single or double
Pt100 inset, in mineral insulated cable,
which can be selected between standard
or glass version (for high vibration level
application).
From the TET family, the inset is available
either with free wires for head transmitter
mounting or with terminal board.
The terminal head can be selected from a
wide choice of standard items (see the
Order key or TA20 Technical Information
for more details).
TST280 is suitable for bar stock and
welded tube thermowells with 1/2" NPT
female connection (refer to TA500 series).
TST280 Type UN
with Union/Nipple
Application
TST280 RTD thermometer range covers a
wide variety of market requirements
worldwide. It is widely used in many
heavy duty applications either in vessels
or in pipes. Typical applications can be
found in the chemical industry, petroleum
refineries, power stations, boilers,
incinerators and everywhere a standard
mechanical resistance is sufficient.
omnigrad TST280
Technical data
Mineral insulated
replaceable inset
Table 1:
IL
Insets operating temperatures
Response time
values1 (s)
Model
Sheth
diameter
(mm)
RTD
element
type
Operating
temperature
(°C)
TET100
6
standard
-50 ... 400
3.5
8
TET102
6
glass
-50 ... 400
3.5
8
TET105
3
standard
-50 ... 400
3
6
TET107
3
glass
-50 ... 400
3
6
TET 200
2x3
standard
-50 ... 400
3
6
Notes:
sensing
length
= 25 m m
Platinum resistance, 1 or 2 x Pt100 Ω at 0°C
class A or B to IEC 751, 1/3 DIN B
3 or 4 wire connections
≥ 100 MΩ , test voltage 250 V at ambient temperature
washer with 70 mm wires or terminal block
Sensing element:
Tolerances:
Wiring:
Insulation resistance:
Electrical connections:
T50
T90
[1] according to IEC751, in moving water at 0.4 m/s
Stem:
Sheath:
Replacement:
mineral insulated cable (MgO)
AISI 316L/W.1.4404
inset length IL is calculated as follows
Table 2
TET inset
TET100/102/105/107/200 Insert length IL
TST280 Thermometer
Type N - Nipple
Terminal head
TA20G
ML + 126 mm
Type NUN - Nipple/Union/Nipple
ML + 152 mm
ML + 161 mm
Type UN - M/F Union and Nipple
ML + 132 mm
ML + 141 mm
Type N/NUN/UN - ... mm N length
ML + N + 26 mm [2]
ML + N + 35 mm
Notes:
(*) All models except for TA20G
[1] ML = Insertion length
[2] N = Neck length, calculated as follows
Thermometer type N
: Nipple total length - 8 mm
Thermometer type NUN
: Nipple total length +27 mm
Thermometer type UN
: Nipple total length +57 mm
Protecting tube
TA20 (*)
ML + 117 mm [1]
Version:
Insertion length:
(min. N = 42 mm)
(min. N = 127 mm)
(min. N = 107 mm)
TA500 thermowell series
Insertion length ML is calculated as follows
ML = A - D - 8 mm where
A = Thermowell nominal length
D = Thermowell bottom thickness
Version, protection class and electrical connection:
refer to order key
Table 3: Built-in head transmitter
(*)
Features
A
B
C
D
Transmitter 4..20mA, 0...50°C
Transmitter 4..20mA, 0...100°C
Transmitter 4..20mA, 0...150°C
Transmitter 4..20mA, 0...200°C
P
Q
4..20mA analogue output with I/O isolation
4..20mA analogue output with I/O isolation (EEx ia version)
J
Hart®, analogue with I/O isolation
S
V
Profibus-PA with I/O isolation
Profibus-PA with I/O isolation (EEx ia version)
R
T
Hart®, analogue with I/O isolation
Hart®, analogue with I/O isolation (EEx ia version)
0
1
9
Without built-in transmitter
Built-in transmitter THT1, ordered separately
Built-in transmitter as specified
Model
Mounting
Analogue
Fixed Range
TMT137
Suitable for
Form B head
Digital PC settable
TMT181
Suitable for
Form B head
Hart®Protocol - TMT182
-
Fieldbus - TMD834
-
Hart®Protocol
TMT182
Suitable for
Form B head
On request
-
(*) refer to the order key
Built-in head transmitter
2
Endress+Hauser
omnigrad TST280
•
Each TST280 RTD thermometer
must be ordered with
corresponding thermowell selected
from TA500 series.
For inset replacement see
Technical data
Accuracy statement is referred to
the replaceable inset only as
defined by IEC 751 without any
protecting thermowell which may
introduce thermal drift due to
process connection heat
dissipation in conjuction to short
immersion lengths.
For a correct temperature
measurement the thermowell
immersion length must be 20 times
its diameter. Shorter immersion
lengths can be supplied but the
thermometer requires an external
(process connection, neck and
connection head) thermal
insulation.
TST280-
ML insertion length (50-1600mm)
(For ML calculation see page 2)
XX mm ML insertion length to spec.
YY mm special insertion length
Price for 100mm of insertion length ML
1 3 mm inset diam. SS316L
3 6 mm inset diam. SS316L
8 3 mm double MgO cable, SS316L
Type of terminal
2 Flying Leads
3 Terminal block
RTD class, type and wire construction
B 1 Pt100 class B, 3 wire
D 2 Pt100 class B, 3 wire
E 1 Pt100 class B, 4 wire
H 1 Pt100 class A, 3 wire
L 2 Pt100 class A, 3 wire
M 1 Pt100 class A, 4 wire
P 1 Pt100 1/3 DIN, 3 wire
Q 2 Pt100 1/3 DIN, 3 wire
R 1 Pt100 1/3 DIN, 4 wire
T Double class B, 3 wire
0 1 Pt100 glass, cl.B, 3 wire
1 2 Pt100 glass, cl.B, 3 wire
3 1 Pt100 glass, cl.A, 3 wire
6 1 Pt100 glass, 1/3 DIN,3 wire
Y RTD class and type to specification
Head type
A5 TA20A 1/2NPT bottom,Pg16 Grey,
A6 TA20A 1/2NPT bottom,1/2NPT cond,
D3 TA20D 1/2NPT bottom,Pg16 Grey,
D4 TA20D 1/2NPT bottom,1/2NPT cond,
G2 TA20G 1/2NPT bott,1/2NPTF cond,
G3 TA20G 1/2NPT bot,1x3/4NPTF cond,
G4 TA20G 1/2NPT bot,2x1/2NPTF cond,
W5 TA20W 1/2NPT F bottom,Pg16 Grey,
YY Special as specified
ML
A
½” N PT
Ty pe N
RTD THERMOMETER - Haeavy duty - General purpose
M.I. replaceable inset - With Nipple or Nipple and Union - 1/2" NPT male connection to thermowell
Neck length N, mat. type, connetion
A 92 mm Neck SS304 type N 1/2"NPT M
B 127 mm Neck SS304 type NUN 1/2"NPT M
C 107 mm Neck SS304 type UN 1/2"NPT M
N
•
•
Order key
Ø
IP68
IP68
IP66
IP66
IP67
IP67
IP67
IP66
Built-in head transmitter (see table 3)
Complete Order Code
N
TST280-
ML
A
½” N PT
Ø
N
Type NU N
ML
A
½” N PT
Type UN
Ø
Endress+Hauser
3
Supplementary
Documentation
•
•
•
•
•
•
•
Technical Information TET100 Ø6 mm M.I. Inset
(TI071T/02/en)
Technical Information TET102 Ø6 mm M.I. Inset
(TI140T/02/en)
Technical Information TET105 Ø3 mm M.I. Inset
(TI103T/02/en)
Technical Information TET107 Ø3 mm M.I. Inset
(TI141T/02/en)
Technical Information TET200 Ø2 x 3 mm M.I. Inset (TI150T/02/en)
Technical Information TA20 terminal heads
(TI072T/02/en)
Technical Information TA500 series specific product
Endress+Hauser
Gmbh+Co.
Instruments International
P.O. Box 2222
D-79574 Weil am Rhein
Germany
Tel. (07621) 975-02
Tx 773926
Fax (07621) 975 345
http://www.endress.com
info@ii.endress.com
TI170T/02/en/04.01
FM+SGML 6.0
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