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iTHERM TrustSens TM371, TM372
Technical Data
Hauser
49
Supply voltage
U
b
= 12 to 30 V
DC
The device may only be powered by a power supply unit with a limited energy electric
circuit in accordance with UL/EN/IEC 61010-1 chapter 9.4 or Class 2 according to UL
1310, "SELV or Class 2 cir-cuit".
Current consumption
• I = 3.58 to 23 mA
• Minimum current consumption: I = 3.58 mA, multi-drop mode I =4 mA
• Maximum current consumption: I ≤ 23 mA
Overvoltage protection
To protect against overvoltage in the power supply and signal/communication cables for
the thermometer electronics, Hauser offers the HAW562 surge arrester for DIN
rail mounting.
For more information see the Technical Information 'HAW562 Surge arrester'
TI01012K
13.4 Performance characteristics
Reference operating
conditions
• Ambient temperature: 25 °C ± 5 °C (77 °F ± 9 °F)
• Supply voltage: 24 V
DC
Internal calibration point
• 118 °C (244.4 °F) +1.2 K / –1.7 K
• Lowest possible calibration point = 116.3 °C (241.3 °F)
• Highest possible calibration point = 119.2 °C (246.6 °F)
The individual calibration point of each TrustSens device is indicated in the ex-works
calibration certificate enclosed with the shipment.
Measurement uncertainty
The given uncertainty values include non-linearity and non-repeatability and correspond
to 2σ (95% confidence level according to the Gaussian distribution curve).
Uncertainty of self-calibration of digital output (HART® value) at the
calibration point.
< 0.35 °C (0.63 °F)
Uncertainty of the
temperature sensor inclusive
digital output (HART® value)
at reference conditions in
delivery state.
Each iTHERM TrustSens
is calibrated and
matched by default
before shipment to
guarantee the given
accuracy.
Process temperature:
+20 to +135 °C (+68 to +275 °F)
+135 to +160 °C (+275 to +320 °F)
0 to +20 °C (+32 to +68 °F)
–20 to 0 °C (–4 to +32 °F)
–40 to –20 °C (–40 to –4 °F)
< 0.22 °C (0.4 °F)
< 0.38 °C (0.68 °F)
< 0.27 °C (0.49 °F)
< 0.46 °C (0.83 °F)
< 0.8 °C (1.44 °F)
Uncertainty of D/A converter (analog output current)
0.03 % of the measurement
range
Содержание iTHERM TrustSens TM371
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