OEM China Suppliers Factory Bimetal Thermometer - Bottom Direct Mounting Stainless Steel Temperature Gauge Manufacturer, Manufacturers

The bimetallic thermometer is an innovative instrument that utilizes a bimetallic strip to convert temperature changes into mechanical displacement. This thermometer operates on the principle of thermal expansion, which refers to the way metals change in volume as temperature fluctuates, Different metals possess unique temperature coefficients, which define the relationship between changes in their physical dimensions and the temperature that causes these changes. As a result, the expansion and contraction of metals can vary significantly, even at the same temperature, The functioning of the bimetallic thermometer hinges on two key properties of metals: their ability to expand and contract with temperature changes and the fact that each metal has a distinct temperature coefficient. This means that when measuring temperature, bimetallic thermometers are favored for their accuracy and reliability, As a trusted supplier from China, our factory specializes in producing high-quality bimetallic thermometers designed for precise temperature measurement. Choose our products for durable performance and excellent service from a leading manufacturer in the industry

Product Description

Product Specifications
Case Stainless steel
Size 50mm (2"), 60mm (2.5"), 75mm (3"), 100mm (4"), 125mm (5"), 150mm (6")
Ring (Cover) Stainless steel, in crimping type or bayonet type
Window Toughened glass / Polycarbonate
Pointer Aluminum Alloy, Black Finished, Zero-adjustable
Dial Aluminum alloy in white background, can be in customize brand logo
Connection SS304 (or SS316 as per request). Bottom direct lower mounting
Thread 1/4", 3/8", 1/2" (BSPT, BSP, NPT etc) as per request
Sensing Element Bi-metallic coil
Accuracy Class 1.6 as per EN 13190 (as standard), maximum 1.0
Over Pressure Limit 110% of full scale value
Ambient Temperature -25°C to +65°C
Process Temperature Max. 400°C
Stem Material Stainless steel 304 (SS316 as per request)
Stem Bulb Diameter 6mm or 8mm; length from 50mm to 500mm
Protection IP65
Package Neutral box package with sticker
Key Features
Compliance to EN 13190 standard
Simple in construction, robust and less expensive
Nominal size 2"/50mm, 2.5"/63mm, 3"/75mm, 4"/100mm
Ranges from -100°C up to 800°C
Wide selection of stem diameter and length
Tamper-proof case to prevent entry of moisture
Tolerance class 1.6 to ASME B40.3
Customized & OEM dial design
ISO & CE Certificate
🔧 Applications
🏭 The bimetallic thermometer is used in household devices likes oven, air conditioner, and in industrial apparatus like refineries, hot wires, heater, tempering tanks etc. for measuring the temperature.
? Frequently Asked Questions
Q What is the accuracy class of this bimetallic thermometer?
This bimetallic thermometer meets Class 1.6 accuracy as per EN 13190 as standard, with a maximum achievable accuracy of Class 1.0, ensuring reliable and precise temperature readings across a wide range of applications.
Q What temperature range can this thermometer measure?
The bimetallic thermometer can measure temperatures ranging from -100°C up to 800°C, making it suitable for both low-temperature and high-temperature industrial processes. The maximum process temperature for the standard model is 400°C.
Q What thread connections and sizes are available?
The thermometer is available with thread sizes of 1/4", 3/8", and 1/2" in BSPT, BSP, NPT, and other thread standards as per customer request. Dial sizes range from 50mm (2") to 150mm (6") to fit various installation requirements.
Q Can the dial be customized with a brand logo or OEM design?
Yes. The aluminum alloy dial features a white background and supports fully customized branding, including OEM logo printing and custom scale ranges. This makes it ideal for distributors and manufacturers who require branded instrumentation.
Q What is the IP protection rating and what does it mean?
This thermometer carries an IP65 protection rating, meaning it is fully dust-tight and protected against water jets from any direction. The tamper-proof stainless steel case also prevents moisture ingress, making it suitable for demanding outdoor and industrial environments.
Q What are the typical applications for this bimetallic thermometer?
This thermometer is widely used in both household and industrial settings, including ovens, air conditioners, refineries, hot wire systems, heaters, and tempering tanks. Its robust construction and wide temperature range make it a versatile choice for accurate temperature monitoring across many industries.

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