Technical data, 8 sensor response times – KROHNE OPTITEMP TRA-TCA EN User Manual
Page 57
TECHNICAL DATA
7
57
OPTITEMP TRA/TCA
www.krohne.com
08/2010 - 4000630501 - MA OPTITEMP TRA/TCA R01 en
7.8 Sensor response times
Thermometer response times are generally indicated as "50% time" (t
05
) and "90% time" (t
09
).
"50% time" refers to the time needed for a thermometer signal to achieve 50% of its end value in
the face of erratic temperature changes (this applies analogously to "90% time")
Pt100-RTD, water with 0.4 m/s (1.31 ft/s)
Thermocouple, water with 0.4 m/s (1.31 ft/s)
The following table contains information regarding the response times of the thermometer
without thermowell (TRA/TCA-P14):
Without thermowell (TRA/TCA-P14 with Ø 6 mm / 0.24")
INFORMATION!
You can find more information about response times in VDI 3522.
Ø of thermowell
Straight thermowell
Reduced tip
Tapered tip
[mm]
["]
t
05
(s)
t
09
(s)
t
05
(s)
t
09
(s)
t
05
(s)
t
09
(s)
9
0.35
17
52
Not available
Not available
11
0.43
21
58
8
22
Not available
12
0.47
22
66
10
26
12
30
Ø of thermowell
Straight thermowell
Reduced tip
Tapered tip
[mm]
["]
t
05
(s)
t
09
(s)
t
05
(s)
t
09
(s)
t
05
(s)
t
09
(s)
9
0.35
14
42
Not available
Not available
11
0.43
17
46
7
18
Not available
12
0.47
18
54
8
21
10
24
sensor
Water with 0.4 m/s (1.31 ft/s)
Air with 1 m/s (3.28 ft/s)
t
05
(s)
t
09
(s)
t
05
(s)
t
09
(s)
Pt100 RTD
3.5
8
24
54
Thermocouple
2.5
7
21
50
.book Page 57 Tuesday, August 17, 2010 12:18 PM