WT sensor PCT381 Manual de usuario

May 2023 1 www.wtsensor.com

PCT381 Isolated Temperature Transmitter

Features

■Can convert all inputs to 4-20mA

■Input: thermocouple, RTD, resistance

■Configuration directly via PDA or PC

■Build-in cold junction compensation

■Available with screw-in temperature probe

Applications

■Equipment support

■Automatic Temperature measurement and

control systems such as pumps,

compressors, natural gas pipelines, etc

■Temperature measurement of water or oil

in petroleum, chemical, electric power,

textile, and environmental protection

fields, etc.

Notes:

1 When measuring temperature, the

temperature measuring element should reach

thermal equilibrium with the measured object.

2 Make sure the insertion length is accurate.

3 Please read the Instruction Manual of the

product carefully before installation and check

the relevant information of the product.

4 Strictly follow the wiring method for wiring,

otherwise it may cause product damage or

other potential faults.

5 Misuse of the product may cause danger or

personal injury.

Product overview

PCT381 isolated intelligent temperature transmitter (round

card) is used for the signal input of resistance temperature

detector (RTD) and thermocouple (TC) and 4 - 20mA analog

output of the two-wire system.It is installed inside the

sensor(Form B).



Notes:

1 Do not misuse documentation

2 The information presented in this product sheet is for

reference only. Do not use this document as a product

installation guide.

3 Complete installation, operation, and maintenance

information is provided in the instructions of the product.

4 Misuse of the product may cause danger or personal injury.

May 2023 2 www.wtsensor.com

Technical Parameters

Input signal

Resistance temperature detector (RTD), Thermocouple (TC)

Cold-junction compensation

temperature scope

-20℃～60℃

Compensation precision

±1℃

Output signal

4-20mA

Load resistance

RL≤(Ue-12)/0.021

Output current of upper & lower

limit overflow alarm

IH=21mA, IL=3.8mA

Supply voltage

DC12-40V

Temperature drift

0.0075%FS/℃

Response time

1s (up to 90% of the final value )

Used environmental temperature

-40～80℃

Storage temperature

-40～100℃

Insulation strength (between input

and output)

1500Vrms (1 min, without spark)

Insulation resistance (between

input and output)

≥100MΩ(under the 500 VDC)

Vibration resistance

4g/2～150Hz

Installation angle

Unlimited

Installation area

B-type top cassette installation

Electromagnetic compatibility

Conform to GB/T18268 industrial equipment application requirements

(IEC 61326-1)

Notes:

1. The above accuracy data was obtained by testing at an ambient temperature of 20 °C ± 2 °C.

2. The output precision “%” is relative to the set range.

3. The cold end compensation error needs to be added to the thermocouple measurement, and the internal

cold end compensation error is ≤±1°C.

Input Type and Transmission Accuracy

Model

Type

Measurement

scope

Minimum

measurement scope

Conversion

accuracy

Resistance

Temperature detector (RTD)

Pt100

-200～850℃

20℃

±0.1%range Or±0.2℃

Cu50

-50～150℃

20℃

±0.1%range Or±0.2℃

Thermocouple (TC)

100～1820℃

500℃

±0.1%range Or±1.5℃

-100～1000℃

50℃

±0.1%range Or±0.5℃

-100～1200℃

50℃

±0.1%range Or±0.5℃

-180～1372℃

50℃

±0.1%range Or±0.5℃

-180～1300℃

50℃

±0.1%range Or±0.5℃

-50～1768℃

500℃

±0.1%range Or±1.5℃

-50～1768℃

500℃

±0.1%range Or±1.5℃

-200～400℃

50℃

±0.1%range Or±0.5℃

May 2023 3 www.wtsensor.com

Appearance Structure Diagram ( mm)

Installation Schematic Diagram

Configuration Schematic Diagram

May 2023 4 www.wtsensor.com

Wiring Diagram

How to order

PCT381 - Pt100 or B

Wotian reserves the right to make any change in this publication without notice. The information provided is

believed to be accurate and reliable as of this product sheet.

Nanjing Wotian Technology Co.,Ltd.

Website: www.wtsensor.com

Add: 5 Wenying Road, Binjiang Development Zone, Nanjing, 211161, China

E-mail:[email protected]m

Product model

PCT381

Resisitance temperature

detector (RTD)

Pt100

Cu50

Thermocouple (TC)

Refer to “Thermocouple

(TC)” on Page 2

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