Specifications

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Siemens FI 01 · 2015 US Edition
Temperature Measurement
SITRANS TS500
Technical description
2
Thermocouples
The tolerance classes of the thermocouples correspond with IEC 584/EN 60584:
Catalog versions
Other thermocouples, ignoble
Other thermocouples. noble
Measuring technology: Response times
Response time describes the speed of the measurement system
in the case of a temperature change, and is typically indicated
as T0.5 or T0.9. The values indicate the time in which a mea-
sured value has increased to 50% or 90% of the actual temper-
ature increase.
The main variables which affect response time are as follows:
• Ideal thermowell geometry includes:
- smallest possible material at the tip
- use of conductive material
• Thermal connection of measuring insert to thermowell:
Due to the optimized design of the Siemens inserts (small gap
width, spring system), they feature very good response be-
havior. Because of the good fit, additional contact materials
are not usually required except in certain applications e.g. at-
tachment of a surface sensor.
• Size of temperature increase
• Medium and flow rate
Resistance thermometer
Typical values as per EN 60751 in water at 0.4m/s can be found
in the following table.
Thermocouples
Typical values as per EN 60751 in water at 0.4m/s can be found
in the following table.
Type Basic accuracy, Class 2 Increased accuracy, Class 1
K -40 °C ... +333 °C2.5 °C (-40 °F... +631 °F 4.5 °F)
333 °C ... 1000 °C±0.0075x|t[°C]| (631 °F... 1832 °F ±0.0075x|t[°F]-32|)
-40 °C ... +375 °C1.5 °C (-40 °F... +707 °F 2.7 °F)
375 °C ... 1000 °C ±0.004x|t[°C]| (707 °F ... 1832 °F±0.004x|t[°F]-32|)
J -40 °C ... +333 °C2.5 °C (-40 °F... +631 °F 4.5 °F)
333 °C ... 750 °C±0.0075x|t[°C]| (631 °F... 1382 °F ±0.0075x|t[°F]-32|)
-40 °C ... +375 °C1.5 °C (-40 °F... +707 °F 2.7 °F)
375 °C ... 750 °C ±0.004x|t[°C]| (707 °F ... 1382 °F ±0.004x|t[°F]-32|)
Type Basic accuracy, Class 2 Increased accuracy, Class 1
T -40°C...133°C 1 °C (-40 °F... +271 °F 1.8 °F)
133 °C ... 350 °C±0.0075x|t[°C]| (271 °F ... 662 °F±0.0075x|t[°F]-32|)
-40 °C ... +125 °C 0.5 °C (-40 °F ... +257 °F 0.9 °F)
125 °C ... 350 °C ±0.004x|t[°C]| (257 °F ... 662 °F ±0.004x|t[°F]-32|)
E -40 °C ... +333 °C2.5°C (-40°F...+631°F4.5 °F)
333 °C ... 900 °C ±0.0075x|t[°C]| (631 °F ... 1652 °F ±0.0075x|t[°F]-32|)
-40 °C ... +375 °C 1.5 °C (-40 °F ... +707 °F 2.7 °F)
375°C...800°C±0.004x|t[°C]| (707 °F... 1472 °F±0.004x|t[°F]-32|)
Type Basic accuracy, Class 2 Increased accuracy. Class 1
R and
S
0 °C ... 600 °C1.5 °C (32 °F... 1112 °F2.7 °F)
600 °C ... 1600 °C0.0025 x |t| (1112 °F ... 2912 °F0.0025 x |t|)
0 °C ... 1100 °C1 °C (32 °F ... 2012 °F1.8 °F)
1100 °C ... 1600 °C[1 + 0.003 (t - 1100)] °C
(2112 °F... 2912 °F[1.8 + 0.003 (t - 212)] °F)
B 600 °C ... 1700 °C0.0025 x |t|
(1112 °F... 3092 °F0.0025 x |t|)
Thermowell form Diameter
[mm (inch)]
T0.5 T0.9
None 6 (0.24) 6 15
Straight (2) 9 (0.35)
12 (0.47)
34
45
90
143
Tapered (3) 12 (0.47) 15 31
Barstock (4)
U=65
24 (0.95) 40 100
Barstock (4)]
U=125
24 (0.95) 45 110
Thermowell form Diameter
[mm (inch)]
T0.5 T0.9
None 6 (0.24) 2 4
Straight (2) 9 (0.35)
12 (0.47)
20
19
63
66
Tapered (3) 12 (0.47) 7 22
Barstock (4)
U=65
24 (0.95) 22 73
Barstock (4)]
U=125
24 (0.95) 20 53
© Siemens AG 2015