TECHNICAL DATA
7
43
TT 51 SERIES
www.krohne.com
08/2015 - 4000754203 - MA TT 51 R03 en
Measuring accuracy
Accuracy
RTD and thermocouple: for detailed information refer to
RTD and T/C
accuracy table
on page 51.
Resistance digital accuracy:
0...1000
Ω
: max. of
±
20 m
Ω
or
±
0.02% of measured value
1000...4000
Ω
:
±
0.025% of measured value; max. 0.5
Ω
Resistance analogue accuracy:
±
0.03% of span
Voltage digital accuracy:
±
5
µ
V or
±
0.01% of measured value
Voltage analogue accuracy:
±
0.03% of span
Total accuracy = sum of digital and analogue accuracy, calculated as an RMS
(Root Mean Square) value
Temperature influence
RTD and Thermocouple: for detailed information refer to
RTD and T/C
accuracy table
on page 51.
Resistance:
±
0.005% of span per
°
C or
±
0.003% of span per
°
F
Voltage:
±
0.005% of span per
°
C or
±
0.003% of span per
°
F
Cold Junction Compensation (CJC)
In-head transmitter:
In-head transmitter:
In-head transmitter:
In-head transmitter:
±
0.5
°
C within ambient temperature -40...+85
°
C /
±
0.9
°
F within ambient temperature -40...+185
°
F
Rail-mount transmitter:
Rail-mount transmitter:
Rail-mount transmitter:
Rail-mount transmitter:
±
0.5
°
C within ambient temperature -40...+85
°
C /
±
0.9
°
F within ambient temperature -40...+185
°
F
Temperature influence CJC
±
0.005
°
C per
°
C /
±
0.005
°
F per
°
F
Sensor wire influence
RTD and resistance, 2-wire: adjustable wire resistance compensation
RTD and resistance, 3-wire: negligible, with equal wire resistance
RTD and resistance, 4-wire: negligible
Thermocouple and voltage: negligible
Supply voltage influence
<
±
0.001% of span per V, differing from 24 V, within specified limits
Long-term drift
Max. of
±
0.01
°
C or
±
0.01% of span per year /
Max. of
±
0.02
°
F or
±
0.01% of span per year
Operating conditions
Temperature
Temperature
Temperature
Temperature
In-head transmitter
Operating and storage temperature:
Operating and storage temperature:
Operating and storage temperature:
Operating and storage temperature:
Standard version: -40...+85
°
C / -40...+185
°
F
IS version: for detailed information refer to
Temperature data for areas with
potentially explosive atmospheres
on page 48.
Rail-mount transmitter
Storage temperature:
Storage temperature:
Storage temperature:
Storage temperature:
Standard version: -40...+85
°
C / -40...+185
°
F
Operating temperature:
Operating temperature:
Operating temperature:
Operating temperature:
Standard version: -40...+85
°
C / -40...+185
°
F
IS version: for detailed information refer to
Temperature data for areas with
potentially explosive atmospheres
on page 48.
Humidity
5...95% RH (non-condensing)
Protection category
Protection category
Protection category
Protection category
In-head transmitter
Housing: IP65
Terminals: IP00
Rail-mount transmitter
Housing: IP20
Terminals: IP00
MA_OPTITEMP_TT_51_en_150828_4000754203_R03.book Page 43 Friday, August 28, 2015 10:54 AM
