T38

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WIKA · Измерение температуры · Семейство T38

Цифровой температурный преобразователь

Name: Цифровой температурный преобразователь
Brand: WIKA
SKU: T38
Price: 464.30 EUR
Availability: BackOrder

С протоколом HART ®, версия для монтажа на головку и на DIN-рейку

Диапазон

-270…2500 °C

Выход

HART® · 4-20mA

Точность

±(0.06 K + 0.015 % MV) for Pt100

Защита

IP65

CEEACRoHSREACHNACEII 3G Ex ec IIC T6 ... T4 Gc

Цена

Ориентир от 464 €

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Описание

Эти температурные преобразователи предназначены для универсального применения в технологической отрасли. Они обеспечивают высокую точность за счёт согласования «датчик—преобразователь», максимальную надёжность и отличную защиту от электромагнитных воздействий. Посредством протокола HART ® температурные преобразователи T38 могут быть сконфигурированы (обеспечивают совместимость) с различными открытыми инструментами конфигурирования. Кроме того, температурные преобразователи T38 через программное обеспечение для конфигурирования WIKAsoftTT и блок программирования модели PU-548 могут быть параметризованы очень легко, быстро и с наглядным обзором.

Помимо выбора типа датчика и диапазона измерений, программное обеспечение позволяет сохранять режим сигнализации об ошибках, демпфирование, несколько описаний точек измерения и настройку процесса.

Особенности

Версия SIL, сертифицированная TÜV, по IEC 61508 (опция)
Применение в системах безопасности до SIL 2/SIL 3
Настраивается практически всеми средствами конфигурирования
Универсальный для подключения 1 или 2 датчиков: термометр сопротивления (до 2 x 3-проводных), термопара, датчик напряжения, потенциометр, герконовые цепи и другие
Сигнализация по NAMUR NE43, мониторинг датчика по NE89, ЭМС по NE21, самоконтроль и диагностика полевых приборов по NE107

Вопросы и ответы

Какой диапазон измерения температуры поддерживает преобразователь T38?

Диапазон зависит от типа подключённого датчика: от −270 … +1300 °C для термометров сопротивления до −270 … +2500 °C для термопар.

Какая точность у преобразователя?

±(0,06 K + 0,015 % МЗ) для Pt100 и ±(0,1 K + 0,04 % МЗ) для термопары типа K; для остальных типов датчиков точность зависит от их вида.

Какой выходной сигнал обеспечивает прибор?

Аналоговый сигнал 4 … 20 mA с цифровой передачей данных по протоколу HART®.

Какие датчики можно подключить к T38?

Термометры сопротивления Pt100, Pt1000, JPt100, JPt1000, Ni100, термопары типов J, K, L, E, N, T, U, R, S, B, C, A, а также mV-датчики, потенциометры и цепочки герконов — один или два датчика одновременно (термометр сопротивления — до 2 × 3-проводного).

В каком исполнении монтируется преобразователь?

Версия для монтажа на соединительную головку и на DIN-рейку; степень защиты IP65.

Подходит ли T38 для взрывоопасных зон?

Да, доступны исполнения Ex ec IIC Gc, Ex ic IIC Gc, Ex ia IIC Ga/Gb/Db/Da для зон 0–2 и зон пыли 20–21, а также Class I/II Division 1/2 (T4 … T6).

Можно ли использовать прибор в системах безопасности?

Да, доступна сертифицированная по TÜV версия SIL согласно IEC 61508 для эксплуатации в приложениях безопасности до SIL 2/SIL 3.

Чем отличается T38 от соседних моделей семейства?

T38 — это головное и рейковое исполнение с HART®, универсальным подключением одного или двух датчиков и опциональной версией SIL; конфигурируется через WIKAsoftTT и программатор PU-548.

Идентификация

Модель	T38
Подтип	Temperature transmitter

Измерительный диапазон

Диапазон температуры

−270…+1300 °C · −260…+200 °C · −210…+1200 °C · −200…+850 °C · −60…+250 °C · −270…+2315 °C · −270…+2500 °C

Точность измерения

Класс точности	±(0.06 K + 0.015 % MV) for Pt100, ±(0.1 K + 0.04 % MV) for Type K, varies by sensor type
Уровень функциональной безопасности (SIL)	SIL 2/SIL 3 per IEC 61508

Электрические характеристики

Выходной сигнал	HART® · 4-20mA · HART
Питание	DC 10.5 ... 42 V
Электр. соединение	Solid wire 0.2 ... 2.5 mm², stranded wire with end splice 0.14 ... 1.5 mm²

Условия эксплуатации

Темп. окружающей среды	−40…+85 °C
Степень защиты IP	IP65
Вес	0.07 kg

Сертификаты и одобрения

Сертификаты	CEEACRoHSREACHNACE
Взрывозащита	II 3G Ex ec IIC T6 ... T4 GcCL I DIV 2 GP A B C D T6...T4 CL I Zone 2 AEx/Ex ic IIC T6...T4 GcCL II Zone 20 AEx/Ex ia IIC T135°C DaCL I DIV 1 GP A B C D T6...T4 CL I Zone 1 AEx/Ex ia IIC T6...T4 GbCL II Zone 21 AEx/Ex ia IIC T6...T4 DbCL I DIV GP A B C D T6 ... T4 CL I Zone 0 AEx/Ex ia IIC T6...T4 GaCL II Zone 20 AEx/Ex ia IICT135℃ Da

Дополнительные характеристики

Тип сенсора	Pt100, Pt1000, JPt100, JPt1000, Ni100, thermocouple types J, K, L, E, N, T, U, R, S, B, C, A, mV sensor, potentiometer, reed chains
Класс сенсора	IEC 60751, JIS C1606, DIN 43760
Языки datasheet	EN, DE

Таблицы из даташита

Measuring element

	Sensor type	Max. configurable measuring range	Standard	Min. measuring span (MS) 1)
Resistance sensor	Pt100	-200 ...+850 °C [-328 ... +1,562 °F]	IEC 60751	10 K
Pt1000	-200 ...+850 °C [-328 ... +1,562 °F]	IEC 60751
CvD	-200 ...+850 °C [-328 ... +1,562 °F]	n. a.
Pt1000 Cryogenic design 2)	-260 ...+200 °C [-436 ...+392 °F]	Internal + IEC 60751
JPt100	-200 ...+500 °C [-328 ...+932 °F]	JIS C1606:1989
JPt1000	-200 ...+500 °C [-328 ...+932 °F]	JIS C1606:1989
Ni100	-60 ...+250 °C [-76 ...+482 °F]	DIN 43760:1987
Resistance sensor 2)	0 ...4,100Ω	n.a.	20Ω
Potentiometer 3)	Potentiometer 2)	0 ...100%	n.a.	10%
FLR sensor 3)	Reed chains	0 ...100%	n.a.	10%
Thermocouple type	J	-210 ... +1,200 °C [-346 ... +2,192 °F]	IEC 60584-1	50 K
	K	-270 ... +1,300 °C [-454 ... +2,372 °F]	IEC 60584-1
	L (DIN)	-200 ...+900 °C [-328 ... +1,652 °F]	DIN 43710:1985
	L (GOST)	-200 ...+800 °C [-328 ... +1,472 °F]	GOST R 8.585 - 2001
	E	-200 ... +1,000 °C [-328 ... +1,832 °F]	IEC 60584-1
	E (CRYO)	-270 ...+250 °C [-454 ...+482 °F]
	N	-270 ... +1,300 °C [-454 ...+ 2,372 °F]	IEC 60584-1
	T	-270 ...+400 °C [-454 ...+752 °F]	IEC 60584-1
	U	-200 ...+600 °C [-328 ... +1,112 °F]	DIN 43710:1985
	R	-50 ... +1,768 °C [-58 ... +3,214 °F]	IEC 60584-1	150 K
	S	-50 ... +1,768 °C [-58 ... +3,214 °F]	IEC 60584-1
	B	-50 ... +1,820 °C [-58 ... +3,308 °F]	IEC 60584-1	200 K
	C	-50 ... +2,315 °C [-58 ... +4,199 °F]	IEC 60584-1	150 K
	A	[-58 ... +4,532 °F]	IEC 60584-1
Voltage sensor	mVsensor 2)	-50 ... +2,500 °C -500 ...+1,000mV	-	10mV

Further details on: Measuring element

Measuring current during measurement	Max. 0.33 mA(Pt100)
Connection methods
Resistance thermometer (RTD)	■ 1 sensor in 2-/3-/4-wire connection ■ 2 sensors in 2-/3-wire connection →For further information, see 'Assignment of connection terminals'
Thermocouple (TC), FLR, potentiometer, voltage sensor	■ 1 sensor ■ 2 sensors
Resistance sensor	■ 1 sensor in 2-/3-/4-wire connection ■ 2 sensors in 2-/3-wire connection
Resistance thermometer (RTD) and thermocouple (TC)	■ Sensor 1 in 4-wire connection ■ Sensor 2 thermocouple
Thermocouple (TC) and resistance thermometer (RTD)	■ Sensor 1 thermocouple ■ Sensor 2 in 2-/3-wire connection
Cold junction compensation, configurable	■ Internal compensation ■ External with Pt100 ■ Fixed valued with fixed temperature specification ■ Disabled

Version	T38.x HART ® instrument version	Corresponding DD (Device Descrip- tion)
1.0.1	1	Dev v1, DDv1

Accuracy specifications

Input and output in accordance with IEC 62828
Input sensor type	Mean temperature coeffi - cient for each 10 K change in ambient temperature in the range -40 ... +85 °C [-40 ... +185 °F]	Measuring deviation at reference conditions 1) in accordance with EN IEC 62828, NE 145	Influence of lead resistance	Long-term stability after 1 year at refer- ence condi- tions 1)
Pt100 / Pt1000 2) / JPt100 / JPt1000 / Ni100 Pt1000 cryogenic design	±(0.06 K + 0.015%MV)	-200 °C [-328 °F] ≤ MV≤+200 °C [+392 °F] : ±0.10 K MV>+200 °C [+392 °F]: ±(0.1 K + 0.01 %\|MV-200 K\|) -260 ... -200 ±(0.1 K + 0.6% \|MV+200 K\|) -200 ...+200 ± 0.1 K	4-wire: no effect (0 ... 50 Ωper wire) 3-wire: ±0.02 Ω/ 10Ω (0 ... 50 Ωper wire) 2-wire: resistance of the supply lines 3)	±60 mΩor 0.05 %of MV, greater value applies
Resistance sensor Potentiometer	±(0.01 Ω+0.01%MV) ±(0.1%MV)	4-wire: 0 °C ≤ MV≤+250 °C [482 °F]: ±0.05Ω MV>+250 °C [482 °F]:±(MV * 0.02%)Ω 3-wire: 0 °C ≤ MV≤+250 °C [482 °F] ±0.05Ω MV>+250 °C [482 °F]:±(MV * 0.02%)Ω R part /R total is max.±0.5%	-	-
FLR sensor	±(0.1%MV)	R part /R total is max.±0.2% 4)	-	±(0.1%MV)
Thermocouples
Type J (Fe-CuNi)	MV>-150 °C [-238 °F]: ±(0.07 K + 0.02 %\|MV\|)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.3 K + 0.2 %\|MV\|) MV>0°C[+32 °F]: ±(0.3 K + 0.03%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies

Смотреть все (20)

Input and output in accordance with IEC 62828

Input sensor type	Mean temperature coeffi - cient for each 10 K change in ambient temperature in the range -40 ... +85 °C [-40 ... +185 °F]	Measuring deviation at reference conditions 1) in accordance with EN IEC 62828, NE 145	Influence of lead resistance	Long-term stability after 1 year at refer- ence condi- tions 1)
Type K (NiCr-Ni)	MV>-150 °C [-238 °F]: ±(0.1 K + 0.02 %\|MV\|)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.4 K + 0.2 %\|MV\|) MV>0°C[+32 °F]: ±(0.4 K + 0.04%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type L (DIN / Fe-CuNi)	MV>0°C[+32 °F]: ±(0.07 K + 0.015%MV)	MV>0°C[+32 °F]: ±(0.3 K + 0.03%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type L (GOST / Fe-Cu- Ni)	MV>-150 °C [-238 °F]: ±(0.1 K + 0.015 %IMVI)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.3 K + 0.2 %\|MV\|) MV>0°C[+32 °F]: ±(0.3 K + 0.03%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type E (NiCr-Cu)	MV>-150 °C [-238 °F]: ±(0.1 K + 0.015 %\|MV\|)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.3 K + 0.2 %\|MV\|) MV>0°C[+32 °F]: ±(0.3 K + 0.03%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type N (NiCrSi-NiSi)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.1 K + 0.05 %\|MV\|) MV>0°C[+32 °F]: ±(0.1 K + 0.02%MV)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.5 K + 0.2 %\|MV\|) MV>0°C[+32 °F]: ±(0.5 K + 0.03%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
TypeT (Cu-CuNi)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.07 K + 0.04%MV) MV>0°C[32 °F]: ±(0.07 K + 0.01%MV)	-150 °C [-238 °F]<MV<0°C [+32 °F]: ±(0.4 K + 0.2 %\|MV\|) MV>0°C[+32 °F]: ±(0.4 K + 0.01%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type U (Cu-CuNi)	MV>0°C[32 °F]: ±(0.07 K + 0.01%MV)	MV>0°C[32 °F]: ±(0.4 K + 0.01%MV)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type R (PtRh-Pt)	MV>50 °C [122 °F]: ±(0.3 K + 0.01 %\|MV - 400 K\|]	50 °C [122 °F] < MV<400 °C [752 °F]: ±(1.45 K + 0.12 %\|MV - 400 K\|) MV>400 °C [752 °F]: ±(1.45 K + 0.005 %\|MV - 400 K\|]	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type S (PtRh-Pt)	MV>50 °C [122 °F]: ±(0.3 K + 0.015 %\|MV - 400 K\|]	50 °C [122 °F] < MV<400 °C [752 °F]: ±(1.45 K + 0.12 %\|MV - 400 K\|) MV>400 °C [752 °F]: ±(1.45 K + 0.01 %\|MV - 400 K\|]	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type B (PtRh-Pt)	450 °C [842 °F] < MV<1,000 °C [1,832 °F]: ±(0.4 K + 0.02 %\|MV - 1,000 K\|) MV>1,000 °C: ±(0.4 K + 0.005 %(MV- 1,000 K))	450 °C [842 °F] < MV<1,000 °C [1,832 °F]: ±(1.7 K + 0.2 %\|MV - 1,000 K\|) MV>1,000 °C: ±1.7 K	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Type C (W5Re-W26Re)	0 °C [32 °F] < MV<400°C [752 °F]: ±0.25 K MV>400 °C [752 °F]: ±(0.25 K + 0.05 %(MV- 400 K))	0 °C [32 °F] < MV<400 °C [752 °F] ±(0.85 K + 0.04 %\|MV - 400 K\|) MV>400 °C [752 °F] ±(0.85 K + 0.1 %\|MV - 400 K\|)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies

Input and output in accordance with IEC 62828

Input sensor type	Mean temperature coeffi - cient for each 10 K change in ambient temperature in the range -40 ... +85 °C [-40 ... +185 °F]	Measuring deviation at reference conditions 1) in accordance with EN IEC 62828, NE 145	Influence of lead resistance	Long-term stability after 1 year at refer- ence condi- tions 1)
Type A (W5Re-W20Re)	0 °C [32 °F] < MV<400 °C [752 °F]: ± 0.25 K MV>400 °C [752 °F] ±(0.25 K + 0.05 %(MV- 400 K))	0 °C [32 °F] < MV<400 °C [752 °F] ±(0.85 K + 0.04 %\|MV - 400 K\|) MV>400 °C [752 °F] ±(0.85 K + 0.1 %\|MV - 400 K\|)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
mV sensor	±(2 μV + 0.02 %\|MV\|)	±(10 μV + 0.03 %\|MV\|)	6 µV / 1,000Ω	±20 µV or 0.05% of MV, greater value applies
Cold junction (only with TC)	±0.1 K	±0.8 K	-	±0.2 K
Output	±0.03 %of measuring span 5)	±0.03 %of measuring span	-	±0.05 %of span

Pt100 / 4-wire / Measuring range 0 ... 150 °C / Ambient temperature 33 °C

Input Pt100, MV<200 °C	±0.100 K
Output ±(0.03 %of 150 K)	±0.045 K
TC input ±(0.06 K + 0.015 %of 150 K)	±0.083 K
TC output ±(0.03 %of 150 K)	±0.045 K
Measuring deviation (typical) √input² + output² +TC input ² +TC output ²	±0.145 K
Measuring deviation (maximum) (input + output +TC input +TC output )	±0.273 K

Thermocouple type K / measuring range 0 ... 400 °C / internal compensation (cold junction) / ambient temperature 23 °C

Input type K, 0 °C < MV<1,300 °C ±(0.4 K + 0.04 %of 400 K)	±0.56 K
Cold junction ±0.8 K	±0.80 K
Output ±(0.03 %of 400 K)	±0.12 K
Measuring deviation (typical) √input² + cold junction² + output²	±0.98 K
Measuring deviation (maximum) (input + cold junction + output)	±1.48 K

Output signal

Analogue output (configurable)	■ 4 ... 20 mA, 2-wire ■ 20 ... 4 mA, 2-wire
Temperature linearity	For RTD	Linear to temperature per IEC 60751, JIS C1606, DIN 43760
ForTC	Linear to temperature per IEC 60584, DIN 43710, GOST R 8.585 - 2001
Load R A	The permissible load depends on the loop supply voltage.
With HART ®	R A ≤ (U B - 10.5 V) / 0.022 A with R A in Ωand U B inV
Output limits (configurable)
In accordance with NAMUR NE43	Lower limit Upper limit	3.8mA 20.5mA
Customer-specifically adjustable	Lower limit Upper limit	3.8 ...4.0mA 20.0 ...20.5mA
Simulation	In simulation mode, independent from input signal, simulation value configurable from
Current value for signalling
In accordance with NAMUR NE43	Downscale	< 3.6 mA(3.5 mA) 1)
Upscale	> 20.5 mA(21.5 mA) 1)
Setting range	Downscale	3.5 ...3.6mA
Upscale	21.0 ...22.0mA
PV, primary value (digital HART ® measured value)	Signalling on sensor and hardware error through default value [±9,999]
Damping (configurable)	Configuration of 1 ... 60 s (0 = disabled) 1)
Factory configuration
Sensor	Pt100
Connection method	3-wire connection
Measuring range	0 ... 150 °C [32 ... 302	°F]
Damping	Disabled
Error signalling	Downscale
Output limits	Lower limit	3.8mA
Upper limit	20.5mA
Communication
Communication protocol	HART ® protocol rev. 7.6
Integration software	HART ® instrument driver and integration software
WIKA configuration software	WIKAsoft-TT
Configuration
User linearisation	Store customer-specific sensor characteristics in the transmitter using software (other sensor types can be used in this way) Number of data points: min. 2 / max. 30

Output signal

Sensor functionality dual sensor	Sensor 1, sensor 2 redundant	The 4 …20mAoutput signal delivers the process value of sensor 1. If sensor 1 fails, the process value of sensor 2 is output (sensor 2 is redundant).
Sensor 1 redundant, sensor 2	The 4 …20mAoutput signal delivers the process value of sensor 2. If sensor 2 fails, the process value of sensor 1 is output (sensor 1 is redundant).
Sensor 1, sen- sor 2 digital	The 4 ... 20 mAoutput signal always delivers the process value of sensor 1. If sensor 1 fails, the transmitter switches to error signalling. Process values from sensor 2 can be queried via HART ® .
Mean value	The 4 ... 20 mAoutput signal delivers the mean value of the two val- ues from sensor 1 and sensor 2. If one sensor fails, the process value of the error-free sensor is output.
Minimum value	The 4 ... 20 mAoutput signal delivers the minimum value of the two values from sensor 1 and sensor 2. If one sensor fails, the process value of the error-free sensor is output.
Maximum value	The 4 ... 20 mAoutput signal delivers the maximum value of the two values from sensor 1 and sensor 2. If one sensor fails, the process value of the error-free sensor is output.
Difference 2)	The 4 ... 20 mAoutput signal delivers the difference between sensor 1 and sensor 2. If one sensor fails, an error signalling will be activated.
Monitoring functions
Test current for sensor monitoring (TC)	Nom.50 µA during test cycle, otherwise 0 µA
Test current for sensor monitoring (RTD) Monitoring NAMUR NE89	Measuring current (sensor-dependent) Resistance thermometer	Max. 50 Ωeach wire
3-wire	Monitoring of the resistance difference between lines 2 & 3 and lines 5 & 6.An error will be signalled if there is a difference of > 0.5 Ω. 3)
Thermocouple	R Lmax > 10 kΩ
Sensor break monitoring	Configurable via software Default: downscale
Sensor short-circuit monitoring resistance sensor	Configurable via software Default: downscale
Self-monitoring	Active permanently, e.g.RAM/ROM test, logical program operating checks and validity check
Measuring range monitoring	Monitoring of the set measuring range for upper/lower deviations Standard: deactivated
Measuring range monitoring	Monitoring of the set measuring range for upper/lower deviations Standard: Deactivated

Output signal
Monitoring functionality when 2 sensors have been connected (dual sensor)	Redundancy	In the case of a sensor error (sensor break, lead resistance too high or outside the measuring range of the sensor) of one of the two sensors, the process value will be only based on the error-free sensor.Once the error is rectified, the process value will again be based on the two sensors, or on sensor 1.
	Ageing control (sensor drift monitoring)	A status message via HART ® occurs when the magni- tude of the temperature difference between sensor 1 and sensor 2 exceeds a user-selectable value.This monitoring only generates a signal if two valid sensor values can be determined and the temperature difference is higher than the selected limit value. (Cannot be selected for the 'Difference' sensor functional- ity, since the output signal already indicates the difference value).
	WIKATrue Drift Detection	WIKATrue Drift Detection technology is a specific sensor combination for the continuous monitoring of a resistance sensor. As soon as a drift is detected, this error will be signalled by the temperature transmitter via a HART ® flag as a diag- nostic status.A faulty measuring location is thus identified immediately and before the next recalibration. → For technical details, see special documentation SP 05.26
Voltage supply
Auxiliary power U B	DC 10.5 ...42V 4) Attention: Restricted auxiliary power ranges for explosion-protected versions (see 'Safety-related characteristic values') and extended SIL version.
	Load R A ≤ (U B - 10.5 V) / 0.022 A with R A in Ωand U B inV (without HART ® )
Time response
Rise time t 90	< 0.8 s 5)
Warm-up time 6)	After approx. 5 minutes the instrument will function to the specifications (accuracies) given in the data sheet
Switch-on time (time to get the first measured value)	Max. 15 s
Typical measuring rate 7)	Measured value update	■ Single sensor > 6/s ■ Dual sensor > 3/s

Electrical connections

Wire cross-section
T38.H head-mounted version	Solid wire	0.2 ... 2.5 mm² (24 ... 14 AWG)
	Stranded wire with end splice	0.14 ... 1.5 mm² (26 ... 16 AWG)
T38.R rail-mounted version	Solid wire	0.2 ... 2.5 mm² (24 ... 14 AWG)
	Stranded wire with end splice	0.14 ... 2.5 mm² (26 ... 14 AWG)
Lead resistance 1)
Resistance sensor	Max. 50 Ωeach wire, 3-/4-wire connection
Thermocouple	Max. 10 kΩ
Insulation voltage (input to analogue output)	AC 1,500 V, (50 Hz / 60 Hz); 60 s

Materials

Non-wetted parts
T38.H head-mounted version	Plastic, PBT, glass-fibre reinforced
T38.R rail-mounted version	Plastic

Operating conditions

Ambient temperature
Standard	-40 ...+85 °C [-40 ...+185 °F]
Extended for high ambient temperatures 1)	-40 ...+105 °C [-40 ...+221 °F]
Extended for low ambient temperatures 1)	-50 ...+85 °C [-58 ...+185 °F]
Advanced for SIL 2)	-40 ...+95 °C [-40 ...+203 °F]
Storage temperature	-40 ...+85 °C [-40 ...+185 °F]
Operating TemperatureTND	-30 ...+65 °C [-22 ...+149 °F]
Maximum allowable humidity
T38.H head-mounted version IEC 60068-2-38:2022	Test of max. temperature variation 65 °C [149 °F] and -10 °C [14 °F], 95 %r.h.
T38.R rail-mounted version IEC 60068-2-30:1999	Test of max. temperature 25 °C [77 °F] and 55 °C [131 °F], 80 %r.h.
Climate class per IEC 60654-1: 1993 3)	Cx (-40 ...+85 °C [-40 ...+185 °F], 5 ... 95 %r.h.)
Salt mist per IEC 60068-2-52: 2017	Severity grade 1
Vibration resistance per IEC 60068-2-6:2008	Test Fc: 10 ... 2,000 Hz, 10g, amplitude 0.75 mm[0.03 in]
Shock resistance per IEC 60068-2-27: 2008	Acceleration / shock width
T38.H head-mounted version	100g / 6 ms
T38.R rail-mounted version	15g / 11 ms
Free fall in line with IEC 60721-3-2:2018	1.5 m[4.9 ft]
Ingress protection of the complete instrument (per IEC 60529)
T38.H head-mounted version	IP00 (electronics completely potted)
T38.R rail-mounted version	IP20
Electromagnetic compatibility (EMC) in accordance with EN 55011:2022, EN IEC 61326, NAMUR NE21:2017	Emission (group 1, class B) and immunity (industrial application) [HF field, HF line, ESD, burst and surge]

Logo	Description	Region
	EU declaration of conformity	European Union

Logo	Description	Region
	EU declaration of conformity ATEX directive	European Union
	Hazardous areas
	IECEx Hazardous areas	International
	CSA	USA and Canada
	Hazardous areas
	EAC Ex	Eurasian Economic Com- munity
	Hazardous areas
	Ex Ukraine	Ukraine
	Hazardous areas
	INMETRO	Brazil
	Metrology, measurement technology
	Hazardous areas
	KCs Hazardous areas	Korea
-	PESO Hazardous areas	India
	NEPSI Hazardous areas	China
-	ECAS	United Arab Emirates
Hazardous areas
	PAC Kasachstan Metrology, measurement technology	Kasachstan

Logo	Description
SIL IEC 61508 / IEC 61511	SIL 2 Functional safety
-	China RoHS directive
NAMUR	NAMUR ■ EMCper NAMUR NE21 ■ Signalling per NAMUR NE43 ■ Sensor break monitoring per NAMUR NE89 ■ Self-monitoring and diagnostics of field instruments in accordance with NAMUR NE107 ■ Uniform representation of the measuring deviation of field instruments in accordance with NAMUR NE145 ■ Field instruments for standard applications in accordance with NAMUR NE131

Certificates

Certificates	■ 2.2 test report ■ 3.1 inspection certificate
Calibration	DAkkS calibration certificate

	Model T38.-AI* Gas hazardous applica- tion	Model T38.-AC* Gas hazardous applica- tion	Model T38.-AI* Dust hazardous applica- tion
Ex marking
Head-mounted version	II 1G Ex ia IIC T6...T4 Ga	II 3G Ex ic IIC T6...T4 Gc	II 1D Ex ia IIIC T135° Da
Rail-mounted version	II 2(1)G Ex ia [ia Ga] IIIC T6...T4 Gb	II 3G Ex ic IIC T6...T4 Gc	II 2(1)D Ex ia [ia Da] IIIC T135 °C Db
Connection values / Intrinsically safe supply and signal circuit (4 ... 20 mA current loop)
Terminals	+ / -	+ / -	+ / -
Auxiliary power U B 1)	DC 10.5 ...30V	DC 10.5 ...30V	DC 10,5 ...30V
Maximum voltage U i	DC 30V	DC 30V	DC 30V
Maximum current I i	130mA	130mA	130mA
Maximum power P i	800/600mW	800/600mW	750 / 650 / 550mW
Effective internal capacitance C	1.7 nF	1.7 nF	1.7 nF
Effective internal inductance L i	Negligible	Negligible	Negligible

	Model T38.-AE* Ex ia IIC/IIB/IIA Ex ia IIIC	Model T38.x-AC Ex ic IIC/IIB/IIA
Connection values of sensor circuit
Terminals	1 - 6	1 - 6
Maximum voltage U 0	DC 6.32V	DC 6.32V
Maximum current I 0	25mA	25mA
Maximum power P 0	39mW	39mW
Maximum external capacitance C 0	24 μF	325 μF
Maximum external inductance L 0	50mH	120mH
Maximum inductance/resistance ratio L 0 /R 0	0.8 mH/Ω	1.55 mH/Ω
Characteristic curve	Linear

Цифровой температурный преобразователь

Описание

Особенности

Вопросы и ответы

4 стандартных артикулов семейства T38