WRN-122B High Aluminum Protective Tube Platinum Rhodium Thermocouple

WRN-122B High Aluminum Protective Tube Platinum Rhodium ThermocoupleExplanation: According to national regulations, our factory has been producing platinum rhodium 30 platinum rhodium 10 platinum, nickel chromium nickel silicon, nickel chromium copper nickel, copper copper nickel, iron copper nickel and other types of thermocouples that comply with IEC standard division numbers since 1987. They should comply with JB/T9238-1999 standard. Our company's service tenet:

The company adheres to the principle of "serving customers, being responsible for customers, and satisfying customers", conscientiously implements the requirements of ISO9001 quality system standards, and continuously improves the product and service quality of the enterprise.

WRN-122B High Aluminum Protective Tube Platinum Rhodium ThermocoupleWorking principle: The working principle of a thermocouple is that two conductors with different compositions are welded at both ends to form a circuit. The direct temperature measuring end is called the measuring end, and the wiring end is called the reference end. When there is a temperature difference between the measurement and reference ends, a thermal current will be generated in the circuit. When connected to a display instrument, the instrument will indicate the corresponding temperature value of the thermoelectric potential generated by the thermocouple.

The thermoelectric potential of a thermocouple will increase as the temperature at the measuring end rises. The magnitude of the thermoelectric potential is only related to the material of the thermocouple conductor and the temperature difference between the two ends, and is independent of the length and diameter of the thermoelectric electrode.

Prefabricated thermocouples are mainly composed of a junction box, protective tube, insulating sleeve, terminal block, and thermoelectric device, and are equipped with various installation and fixing devices.

Main technical parameters

Temperature measurement range and allowable error

Note that "t" refers to the measured temperature of the temperature sensing element.

Thermal response time

When there is a step change in temperature, the output of the thermocouple changes to 50% of the change, and the required time becomes the thermal response time, represented by T0.5.

Nominal pressure

Generally refers to the static external pressure that the protective tube can withstand at room temperature without breaking. In fact, the allowable working pressure is not only related to the material and diameter wall thickness of the protective tube, but also to its structural form, installation method, insertion depth, as well as the flow rate and type of the measured medium.

Thermocouple with the smallest insertion depth

It should not be less than 8-10 times the outer diameter of its protective tube (except for special products).

Thermocouple insulation resistance (at room temperature)

The test voltage for room temperature insulation resistance is DC 500V ± 50V. The atmospheric conditions for measuring room temperature insulation resistance are temperature 15 ℃~35 ℃, relative humidity 45%, and atmospheric pressure 86~106kPa.

a、 For thermocouples with a length exceeding 1 meter, the product of their insulation resistance at room temperature and their length should not be less than 100M Ω. m.

即： Rr. L≥100MΩ.m L＞1m

b、 For thermocouples with a length of 1 meter or less, their insulation resistance at room temperature should not be less than 100M Ω.

Upper and lower temperature insulation resistance

The upper limit temperature insulation resistance of the thermocouple should not be less than the specified value in the table below:

model

Unified specifications, models, and specifications

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Our company's after-sales service commitment:

If users encounter any problems while using the products provided by our company, they can receive support and assistance. Users can primarily communicate with our company's customer service center. Once a user's request is received, professional engineers from the customer service department will solve or answer the questions raised by the user within the specified time. In addition, our company has 24-hour after-sales service to ensure a response within 24 hours after receiving user notifications. For those that require personnel to handle, the company will dispatch service personnel to the scene within a reasonable time to ensure that the equipment can resume normal operation as soon as possible.

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