Endress+Hauser iTHERM TM401, Техническая информация

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iTHERM TM412
12 Hauser
Sensor type Operating
temperature range Class B Class A Class AA
Pt100 thin film
sensor (TF) –50 to 200 °C
(–58 to 392 °F) –50 to 200 °C
(–58 to 392 °F) –30 to 200 °C
(–22 to 392 °F) -
Pt100 wire-
wound sensor
(WW) –200 to 600 °C
(–328 to 1
112 °F)
- –100 to 450 °C
(–148 to 842 °F) –50 to 250 °C
(–58 to 482 °F)
Influence of ambient
temperature
Depends on the head transmitter used. For details, see Technical Information. →  39
Self heating
RTD elements are passive resistances that are measured using an external current. This
measurement current causes a self-heating effect in the RTD element itself which in turn creates an
additional measurement error. In addition to the measurement current, the size of the measurement
error is also affected by the temperature conductivity and flow velocity of the process. This self-
heating error is negligible when an Hauser iTEMP temperature transmitter (very small
measurement current) is connected.
Response time Tests in water at 0.4 m/s (1.3 ft/s), according to IEC 60751; 10 K temperature step change.
Response time without heat transfer paste
1)
Protection tube Shape of tip Insert
1x Pt100
iTHERM
QuickSens,
TF
1x Pt100
iTHERM
StrongSens
, TF
1x Pt100
wire
wound
WW
2x Pt100
wire
wound
WW
1x Pt100
standard
thin-film
TF
2x Pt100
standard
thin-film
TF
t
50
t
90
t
50
t
90
t
50
t
90
t
50
t
90
t
50
t
90
t
50
t
90
6.35 mm (¹⁄₄ in)
Reduced 4.76 mm (³⁄₁₆ in)
x 19.05 mm (0.75 in)
3 mm (0.12 in) 1.6 s 5.9 s - - 7.8 s 21.8 s 7.8 s 21.8 s - - - -
9.53 mm (³⁄₈ in)
Straight 6 mm (0.24 in) 8.5 s 47 s 25.9 s 80.9 s - - - - - - - -
Straight 6.35 mm (¹⁄₄ in) - - - - 23.6 s 67 s 21.8 s 65.2 s 18.4 s 55.8 s 18.4 s 55.8 s
Reduced 4.76 mm (³⁄₁₆ in)
x 19.05 mm (0.75 in)
3 mm (0.12 in) 1.5 s 5.5 s - - 8.4 s 23 s 8.4 s 23 s - - - -
12.7 mm (¹⁄₂ in)
Straight 6 mm (0.24 in) 8.2 s 34.8 s 23.4 s 70.6 s - - - - - - - -
Straight 6.35 mm (¹⁄₄ in) - - - - 20.1 s 55.4 s 21.3 s 61.8 s 17.9 s 51.5 s 17.9 s 51.5 s
Reduced 4.76 mm (³⁄₁₆ in)
x 19.05 mm (0.75 in)
3 mm (0.12 in) 1.8 s 6.2 s - - 8.8 s 24.1 s 8.8 s 24.1 s - - - -
1) If using a protection tube.
Response time for directly wired insert without transmitter.