Thermal Resistance Temperature Sensor for Accurate Temperature Measurement

• Customization: Available
• After-sales Service: 1year
• Warranty: 1year
• Model NO.: Pt100/Cu50
• Standard: Jb/T8803-1998
• Accuracy: 1°C
• Usage: Industrial
• Display: Pointer
• Material: Bimetallic
• Hygrometer Type: Bimetallic Thermometer
• Thermometer Standard: Jb/T8803-1998; GB3836-83
• Termall Responsive Time: Less Than 40s
• Housing Rate: IP55-67
• Connection: Thread or Flange Clamp Customized
• Measuring Range: 0 to 500 Degree C
• Dial: 60,100,150mm Customized
• Warranty Period: 1 Year
• Probe Length: Customized
• Thermowell: Yes /No
• Transport Package: Wooden Cases or Carton
• Specification: ANSI JIP DIN JS and others
• Trademark: Tianjin U-ideal Instrument
• Origin: China
• HS Code: 90251100
• Production Capacity: 3000PCS/Month
• Package Size: 30.00cm * 20.00cm * 50.00cm
• Package Gross Weight: 3.000kg

Product Description

 

Product Description

 

   Thermal resistance temperature sensors, also known as resistance temperature detectors (RTDs), are widely used in various industrial and scientific applications for accurate temperature measurement. These sensors operate on the principle that the electrical resistance of certain materials changes in a predictable manner with temperature variations.

 

Working Principle
The core of a thermal resistance temperature sensor is a resistive element made of materials like platinum, nickel, or copper. Platinum is the most commonly used due to its high precision, wide temperature range (-200°C to 850°C), excellent stability, and repeatability. As the temperature increases, the atoms in the resistive material vibrate more vigorously, impeding the flow of electrons and thus increasing the electrical resistance. This relationship between resistance and temperature is typically described by a mathematical formula, such as the Callendar - Van Dusen equation, which allows for the conversion of measured resistance values into temperature readings.

Product Parameters

 

Construction and Types
Thermal resistance temperature sensors come in different forms. Wire - wound RTDs are constructed by winding a thin metal wire (e.g., platinum wire) around a ceramic or glass former. Thin - film RTDs, on the other hand, are made by depositing a thin layer of resistive material onto a substrate, usually through processes like sputtering or evaporation. This results in a more compact and faster - responding sensor. They can be further classified into two - wire, three - wire, and four - wire configurations. Two - wire sensors are the simplest but are affected by lead wire resistance errors. Three - wire sensors reduce this error by adding an extra wire, while four - wire sensors provide the most accurate measurements as they completely eliminate the impact of lead wire resistance.

 

Advantages

 

• High Accuracy: They can achieve extremely high accuracy, often within ±0.1°C or even better, making them ideal for applications where precise temperature control is crucial, such as in semiconductor manufacturing, pharmaceutical production, and scientific research.
• Good Stability: Thermal resistance sensors have excellent long - term stability, maintaining their accuracy over extended periods without significant drift. This reduces the need for frequent calibration.
• Linear Output: The relationship between resistance and temperature is relatively linear within a certain range, which simplifies signal processing and temperature calculation.

 

Disadvantages

 

• Cost: Compared to some other temperature sensors like thermocouples, thermal resistance temperature sensors are generally more expensive, mainly due to the use of high - quality materials and the precision manufacturing processes involved.
• Sensitivity to Overheating: If exposed to temperatures beyond their rated range, the resistive element can be damaged, leading to inaccurate readings or complete failure of the sensor.
• Slow Response Time: In some cases, especially wire - wound RTDs, the response time to temperature changes can be relatively slow compared to other types of sensors, which may limit their use in applications requiring rapid temperature measurement.

 

Input
Input signal	Thermal Resistance(RTD),thermal couple(TC),linearity resistance
Cold end compensation temperature range	-20-609C
Compensation accuracy	+1°C
Output
Output Signal	4-20mA
Load resistance	RLS (Ue-12)1/0.021
Upper and lower limit overflow alarm output current	IH=21mA,IL=3.8mA
Power off alarm signal	21mA
Power voltage	DC12-40V
Other Parameter
Transmitting accuracy( 20°C )	0.1%FS
Temperature drift	0.01%FS/'C
Response time	1s reach 90% of final value
The environment temperature	-40~80ºC
Storage temperature	-40~100ºC
Condensate	Allow
Protection class	IP00 ; IP66(install)
Shock proof	4g/2~150Hz
Mount Angle	Any
Mounting area	B type top box mounting
Magnetic compatibility	Conform to GB/T18268 industrial device requirements(lEC61326-1)

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