Product Introduction

The Thermal Comfort Bimetallic Thermometer is a high-reliability on-site temperature measurement instrument designed based on the principle of different thermal expansion coefficients of metals. Its core sensing element consists of two metal sheets or alloy sheets with different linear expansion coefficients, which are firmly bonded together and wound into a spiral shape. One end of the sensing element is fixed, and the other end (free end) is connected to a pointer through a transmission shaft. When the temperature of the measured medium changes, the bimetallic strip undergoes curvature change due to unequal thermal expansion and contraction, driving the free end to rotate, and finally the pointer indicates the corresponding temperature value on the circular scale dial.

The product adopts a thermowell design, which can be matched with various installation sleeves to meet the temperature measurement requirements of different pressure levels. It can directly measure the temperature of liquid, steam and gas media in the process within the range of -80°C to +500°C, as well as the surface temperature of solids. The key components are made of high-quality materials: the protective tube is available in 1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276 and other corrosion-resistant materials, which can resist the erosion of most chemical media; the transmission parts are precision machined to ensure smooth operation, and the maximum step difference caused by gap and friction is no more than 0.5°C, effectively ensuring measurement accuracy.

Compared with traditional industrial glass mercury thermometers, the Thermal Comfort Bimetallic Thermometer has the advantages of no mercury hazard, strong shock resistance, and easy reading. It can replace fragile glass thermometers in most industrial occasions. At the same time, it has good environmental adaptability and can work stably in the environment of -35°C to 45°C and relative humidity ≤90% RH.

Technical Parameters

Parameter Item	Specification
Nominal Diameter of Dial	100 mm
Accuracy Class	1.0, 1.5
Connection Size	M20x1.5, NPT1/2
Thermal Response Time	≤40s
Protection Class	IP55
Measurement Range	-80°C to +500°C
Operating Environment Temperature	-35°C to 45°C
Operating Environment Humidity	≤90% RH
Sensing Element Material	Dual-metal sheet (special alloy)

Model and Specification

Model	Temperature Measurement Range	Accuracy Class	Protection Tube Material	Specification	Nominal Pressure	Thermowell Type
WSS-403S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSS-503S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSS-413S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSS-513S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSS-483S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSSX-413S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSSX-483S	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	≤30MPa	Threaded Connection
WSS-403L	-80~+40°C, -40~+80°C, 0~50°C, 0~100°C, 0~150°C, 0~200°C, 0~300°C, 0~400°C, 0~500°C	1.0, 1.5	1Cr18Ni9Ti, 304, 316, 316L, Hastelloy C-276	75mm, 100mm, 150mm, 200mm, 300mm	150-40MPa	Flange Connection

Core Features

High-precision measurement

Complies with JJF1908-2021 calibration specification, with accuracy classes of 1.0 and 1.5. The indication error does not exceed ±1.0°C in the effective measurement range, ensuring reliable data support for industrial production.

Strict material inspection

All protection tube materials have passed corrosion resistance and high-temperature resistance tests. For example, 316L material can resist the erosion of acid, alkali and salt media, and Hastelloy C-276 can be used in harsh chemical environments.

Sophisticated production process

The sensing element is made by high-temperature bonding process, with no gaps at the junction of the two metals and uniform coating, ensuring stable performance in long-term use. The transmission parts are processed by precision CNC machine tools, with low friction and long service life.

Excellent environmental adaptability

With IP55 protection level, it can effectively prevent dust accumulation and water splashing. It can work stably in harsh environments such as high vibration and large temperature difference, and the storage and transportation environment temperature ranges from -35°C to 45°C.

Flexible installation

Supports threaded and flange connection methods, and can be matched with various installation sleeves to meet the temperature measurement requirements of different pressure levels (up to 40MPa). It is suitable for various on-site installation scenarios.

Traceable calibration

Each product has a unique calibration certificate, which can be traced back to national measurement standards. The calibration process uses standard platinum resistance thermometers with an error of no more than 0.2°C, ensuring the accuracy and traceability of the product.

Application Fields

Oil and Gas Industry: Used for temperature measurement of crude oil pipelines, natural gas processing equipment, wellhead devices and other occasions. The corrosion-resistant protection tube can resist the erosion of oil and gas media, and the high-pressure resistance design is suitable for downhole and pipeline pressure environments.

Aerospace Industry: Used for temperature monitoring of aircraft engine components, hydraulic systems and fuel tanks. The product has the advantages of small size, light weight and strong vibration resistance, which can meet the strict requirements of the aerospace field for instrument performance.

Power Industry: Applied to temperature measurement of boiler steam pipes, turbine bearings, generator windings and other equipment in thermal power plants and hydropower plants. The fast thermal response time can timely reflect the temperature change of the equipment, ensuring the safe operation of the power system.

Metrology Institutes: As a standard verification instrument for temperature measurement, it is used for calibration and verification of other temperature measuring instruments. Complies with national metrology standards, with high accuracy and good stability.

Industrial Laboratories: Used for temperature control and measurement in chemical reaction kettles, material testing furnaces and other experimental equipment. The mercury-free design is safe and environmentally friendly, and the multiple measurement ranges can meet the needs of different experimental scenarios.

Pharmaceutical and Chemical Industry: Used for temperature measurement of drug production processes, chemical reactors and storage tanks. The corrosion-resistant material can resist the erosion of pharmaceutical and chemical media, and the closed structure prevents cross-contamination of materials.

Automotive Manufacturing Industry: Used for temperature monitoring of engine cylinders, exhaust pipes and cooling systems in the process of automobile production and testing. The product has strong high-temperature resistance and vibration resistance, which can adapt to the harsh working environment of automobiles.

Why Choose Our Thermal Comfort Bimetallic Thermometer?

Strict quality control

We have established a complete quality management system, and each product has to go through 12 strict inspection procedures from raw material incoming to finished product delivery, including material composition analysis, dimensional accuracy detection, temperature measurement accuracy calibration and environmental adaptability test. The qualified rate of finished products reaches 99.8%.

High-quality material selection

We only select high-grade alloy materials from well-known domestic and foreign manufacturers. The bimetallic sensing elements are imported from Germany, with stable thermal expansion coefficient and long service life. The protection tube materials are all tested by third-party institutions to ensure corrosion resistance and high-temperature resistance performance.

Traceable calibration service

We provide NIST-traceable calibration certificates. The calibration process is carried out in accordance with JJF1908-2021 calibration specification, using standard equipment that has passed national metrology verification. Customers can query the calibration records through the product serial number, ensuring the traceability of product accuracy.

Strong high-pressure adaptability

The thermowell is designed with finite element analysis, which can withstand pressure up to 40MPa. It has passed the pressure test of national authoritative institutions, and can be safely used in high-pressure occasions such as oil and gas wells and chemical reactors.

Customized service capability

We have a professional R&D team with 15 years of experience in instrument design and development, which can provide customized solutions according to customers' special needs, such as special measurement ranges, non-standard connection sizes, and special material protection tubes. The customized product development cycle is as short as 7-15 working days.

Efficient delivery speed

We have a large-scale production base and a complete supply chain system. The delivery cycle of standard models is 3-7 working days, and the delivery cycle of customized models is 15-20 working days. We cooperate with well-known international logistics companies to ensure that products are delivered to customers on time.

FAQ

Q: What is the calibration cycle of the Thermal Comfort Bimetallic Thermometer?

A: According to the national metrology verification regulations, the recommended calibration cycle is 12 months. For products used in harsh environments such as high temperature, high pressure and strong corrosion, it is recommended to shorten the calibration cycle to 6-9 months to ensure measurement accuracy.

Q: Which protection tube material should I choose for measuring corrosive media?

A: For general corrosive media such as dilute acid and dilute alkali, 316L material is recommended; for strong corrosive media such as concentrated acid, concentrated alkali and chlorine-containing media, Hastelloy C-276 material is recommended, which has excellent corrosion resistance in most chemical media.

Q: Can the product be used for temperature measurement of solid surfaces?

A: Yes. We can provide a special surface contact type thermowell for the product, which can be closely attached to the surface of the solid to measure its temperature. It is suitable for temperature measurement of metal castings, plastic extruders and other equipment surfaces.

Q: What is the difference between threaded connection and flange connection?

A: Threaded connection is suitable for low and medium pressure occasions (≤30MPa), with simple installation and low cost; flange connection is suitable for high pressure occasions (150-40MPa), with good sealing performance and strong pressure resistance, which is suitable for harsh working environments such as high pressure and high vibration.

Q: Do you provide after-sales service for the product?

A: Yes. We provide a 24-month warranty service for the product. During the warranty period, if there is any quality problem caused by non-human factors, we will provide free repair or replacement. In addition, we also provide lifelong maintenance services, including product calibration, parts replacement and technical consultation.

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