Endress+Hauser iTEMP TMT85, Руководство по эксплуатации

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Technical data iTEMP TMT85
56 Hauser
Standard Designation Measuring range Measured error (±)
Non-
repeatabil
ity (±)
Type T (40) –150 to +400 °C (–238 to +752 °F) ≤ 0.36 °C (0.47 °F)
0.36 °C (0.47 °F) - 0.04% *
(MV - LRV)
≤ 0.11 °C
(0.20 °F)
DIN 43710
Type L (41)
–150 to +900 °C
(–238 to +1 652 °F)
≤ 0.29 °C (0.52 °F)
0.29 °C (0.52 °F) - 0.009% *
(MV - LRV)
≤ 0.07 °C
(0.13 °F)
Type U (42)
–150 to +600 °C
(–238 to +1 112 °F)
≤ 0.33 °C (0.6 °F)
0.33 °C (0.6 °F) - 0.028% *
(MV - LRV)
≤ 0.10 °C
(0.18 °F)
GOST R8.585-2001 Type L (43)
–200 to +800 °C
(–328 to +1 472 °F)
≤ 2.20 °C (4.00 °F)
2.2 °C (4.00 °F) - 0.015% *
(MV - LRV)
≤ 0.15 °C
(0.27 °F)
Voltage transmitter
(mV)
–20 to +100 mV 10 µV -
4 µV
1) Measured value transmitted via the fieldbus.
2) Maximum measured error for the specified measuring range.
3) Deviations from maximum measured error possible due to rounding.
MV = Measured value
LRV = Lower range value of relevant sensor
Total measured error of transmitter at current output = √(Measured error digital² +
Measured error D/A²)
Sample calculation with Pt100, measuring range 0 to +200 °C (+32 to +392 °F), ambient
tempe25 °C (+77 °F), supply voltage 24 V:
Measured error = 0.06 °C + 0.006% x (200 °C - (-200 °C)): 0.084 °C (0.151 °F)
Sample calculation with Pt100, measuring range 0 to +200 °C (+32 to +392 °F), ambient
tempe35 °C (+95 °F), supply voltage 30 V:
Measured error = 0.06 °C + 0.006% x (200 °C - (-200 °C)): 0.084 °C (0.151 °F)
Influence of ambient temperature = (35 - 25) x (0.002% x 200 °C - (-200 °C)), min.
0.005 °C 0.08 °C (0.144 °F)
Influence of supply voltage = (30 - 24) x (0.002% x 200 °C - (-200 °C)), min. 0.005
°C 0.048 °C (0.086 °F)
Measured error:
√(Measured error² + Influence of ambient temperature² + Influence of supply
voltage²)
0.126 °C (0.227 °F)
Sensor adjustment Sensor-transmitter-matching
RTD sensors are one of the most linear temperature measuring elements. Nevertheless,
the output must be linearized. To significantly improve temperature measurement
accuracy, the device allows the use of two methods: