KROHNE OPTITEMP Compact sensors - Manual (Page 39)

TECHNICAL DATA
7
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OPTITEMP TRA-CXX
www.krohne.com 02/2014 - 4003290501 - MA OPTITEMP TRA-Cxx R01 en
7.4 Measuring accuracy
The measuring accuracy depends largely on the following factors:
• The type of the measuring sensor (type of circuit, measuring range).
• The correct dimensions (diameter, wall thickness) and insertion length of the thermowell for
good thermal coupling to the process temperature (insufficient insertion depth often results
in measurement errors).
• The type of temperature transmitter used.
With the exception of the TT 60 R version, all of the temperature transmitters generate an
analogue output signal. For this reason, the following table indicates the measuring accuracy of
most of the transmitters as a percentage of the measuring range. The measuring accuracy of the
RTD sensor without transmitter is class A according to IEC 60751.
Temperature transmitter
7.5 Process connections
Threaded compact sensor
Flange compact sensor
INFORMATION!
Please consult the appropriate handbook for further information regarding the accuracy of the
external temperature transmitters.
Type of temperature transmitter Accuracy (% of the measuring range or °K)
Built-in transmitter OPTITEMP OEM 201 (analogue,
4...20 mA)
± 0.15%
TT 10 R (analogue, 4...20 mA) ± 0.15%
TT 11 R (analogue 3-wire transmitter, output:
0...10 VDC)
± 0.15%
TT 30 R (digital, 4...20 mA) ± 0.10%
TT 31 R (digital, 4...20 mA, 1- & 2-channel) ± 0.10%
TT 32 R (digital 4-wire, outputs: 0/4...20 mA,
0/1...5 VDC, 0/2...10 VDC)
± 0.10%
TT 40 R (digital, 4...20 mA, precise) ± 0.05%
TT 50 R (digital, 4...20 mA, HART ® ) ± 0.10%
TT 51 R (digital, 4...20 mA, HART ® , SIL2, precise) ± 0.05%
TT 60 R (digital, Profibus-PA) ± 0.10°K
Process connection Ø of thermowell (material 1.4404 / 316 L)
[mm] ["]
Thread G½" 6 0.24
Process connection Ø of thermowell (material 1.4404 / 316 L)
[mm] ["]
ISO 2852 Clamp DN25/38 6 0.24
.book Page 39 Friday, February 7, 2014 9:17 AM