Endress+Hauser iTEMP TMT142B - Performance characteristics

Technical data iTEMP TMT142B
50 Endress+Hauser
communication lines (fieldbus systems) and power supply is diverted to ground. The
functionality of the transmitter is not affected as no problematic voltage drop occurs.
Connection data:
Maximum continuous voltage (rated voltage) U
C
= 36 V
DC
Nominal current I = 0.5 A at T
amb.
= 80 °C (176 °F)
Surge current resistance
• Lightning surge current D1 (10/350 µs)
• Nominal discharge current C1/C2 (8/20 µs)
• I
imp
= 1 kA (per wire)
• I
n
= 5 kA (per wire)
I
n
= 10 kA (total)
Series resistance per wire 1.8 Ω, tolerance ±5 %
13.4 Performance characteristics
Response time
Resistance thermometer (RTD) and resistance
transmitter (Ω measurement)
≤ 1 s
Thermocouples (TC) and voltage transmitters (mV) ≤ 1 s
Reference temperature ≤ 1 s
When recording step responses, it must be taken into account that the times of the
internal reference measuring point are added to the specified times where applicable.
Reference operating
conditions
• Calibration temperature: +25 °C ±3 K (77 °F ±5.4 °F)
• Supply voltage: 24 V DC
• 4-wire circuit for resistance adjustment
Maximum measured error In accordance with DIN EN 60770 and the reference conditions specified above. The
measured error data correspond to ±2 s (Gaussian distribution). The data include non-
linearities and repeatability.
ME = Measured error
MV = Measured value
LRV = Lower range value of relevant sensor
Typical
Standard Designation Measuring range Typical measured error (±)
Resistance thermometer (RTD) as per standard Digital value
1)
Value at current
output
IEC 60751:2008 Pt100 (1)
0 to +200 °C (32 to +392 °F)
0.08 °C (0.14 °F) 0.1 °C (0.18 °F)
IEC 60751:2008 Pt1000 (4) 0.14 °C (0.25 °F) 0.15 °C (0.27 °F)
GOST 6651-94 Pt100 (9) 0.08 °C (0.14 °F) 0.1 °C (0.18 °F)
Thermocouples (TC) as per standard Digital value
1)
Value at current
output
IEC 60584, Part 1 Type K (NiCr-Ni) (36)
0 to +800 °C (32 to +1 472 °F)
0.41 °C (0.74 °F) 0.47 °C (0.85 °F)
IEC 60584, Part 1 Type S (PtRh10-Pt) (39) 1.83 °C (3.29 °F) 1.84 °C (3.31 °F)
GOST R8.585-2001 Type L (NiCr-CuNi) (43) 2.45 °C (4.41 °F) 2.46 °C (4.43 °F)
1)
Measured value transmitted via HART
®
.