OEM Bottom Direct Mounting Bi-metal Thermometer - China Suppliers and Factory for Accurate Temperature Measurement Factories, Factory

The bimetallic thermometer is a precision instrument that utilizes a bimetallic strip to convert temperature changes into mechanical movement. This thermometer operates based on the fundamental property of thermal expansion, where metals expand and contract in response to temperature variations. Each metal possesses a unique temperature coefficient, which indicates how its physical dimensions change with temperature fluctuations, As one of the leading suppliers in China, our factory ensures that our bimetallic thermometers are manufactured with high-quality materials, ensuring accuracy and reliability. The distinct temperature coefficients of different metals mean that even at the same temperature, the degree of expansion or contraction varies, allowing for precise measurements. Trust our China-based factory to provide robust bimetallic thermometers suitable for various industrial applications

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
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The bimetallic thermometer is used in household devices like ovens, air conditioners, and in industrial apparatus like refineries, hot wires, heaters, tempering tanks, etc. for measuring the temperature.
Frequently Asked Questions (FAQ)
Q What is a bimetallic thermometer and how does it work?
A bimetallic thermometer measures temperature using a bi-metallic coil sensing element. The coil is made of two different metals bonded together that expand at different rates when heated, causing the coil to bend or twist, which in turn moves the pointer on the dial to indicate the temperature.
Q What temperature range can this bimetallic thermometer measure?
This bimetallic thermometer supports a measurement range from -100°C up to 800°C, with a maximum process temperature of 400°C and an ambient operating temperature range of -25°C to +65°C.
Q What connection thread types are available?
The thermometer is available with 1/4", 3/8", and 1/2" thread sizes in BSPT, BSP, NPT, and other formats as per customer request. The connection material is SS304 as standard, with SS316 available upon request.
Q Can the dial be customized with a brand logo?
Yes. The aluminum alloy dial comes with a white background as standard and supports customized branding and OEM dial design. This makes it suitable for businesses that require their own logo or labeling on the instrument.
Q What certifications does this thermometer comply with?
This bimetallic thermometer complies with EN 13190 (accuracy class 1.6 as standard) and ASME B40.3 (tolerance class 1.6). It also holds ISO and CE certifications, ensuring reliable quality for both domestic and international markets.
Q What are the typical industrial applications of this thermometer?
This bimetallic thermometer is widely used in both household and industrial settings. Common applications include ovens, air conditioners, refineries, hot wire systems, industrial heaters, and tempering tanks — anywhere accurate and reliable temperature monitoring is required.

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