OEM Stainless Steel 4 100mm Bi-metal Thermometer with Electric Switch Contacts - China Suppliers & Factory Suppliers, Factory

Introducing our China-manufactured electric contact bi-metal thermometer, an essential device for precise temperature measurement in industrial automation, pipelines, boilers, and HVAC systems. This thermometer features a bimetallic coil that not only measures temperature accurately but also integrates electrical contacts that activate alarms or control devices when predefined temperature limits are reached, With our bi-metal thermometer from trusted suppliers, you gain a reliable solution for on-site temperature indication and circuit management. The adjustable switch contacts (electrical alarm contacts) enable you to make or break circuits based on the position of the pointer from the indicating measuring instrument. The instrument's pointer moves seamlessly across the entire scale range, while the set pointer can be easily adjusted through a window using a removable adjustment key, Choose our bi-metal thermometer for a seamless blend of accuracy and automated control, produced in our state-of-the-art factory in China

Product Description

Product Specifications

Case Chromed steel
Size 75mm (3"), 100mm (4")
Ring (Cover) Acrylic in snap-in cover type
Window Polycarbonate or instrumental glass
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 mounting
Thread 3/8", 1/2"; PT (BSPT, ZG), BSP (G, PF), NPT etc. as per request
Sensing Element Bi-metallic coil
Accuracy Class 1.6 as per EN 13190 (as standard), maximum class 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
Wiring Type Junction box (JB) on right side
Contact Type Sliding switch SPST
Contact Function Single contact N.O. (1a) / Single contact N.C. (1b)
Double contacts N.O.+N.C. (1a1b)
Double contacts N.C.+N.O. (1b1a)
Double contacts N.O.×2 (2a)
Double contacts N.C.×2 (2b)
Protection IP65
Package Natural box package with sticker

Key Features

High reliability and long service life
🔧
Universal application flexibility
🛡️
Robust case and stem constructed from stainless steel
Instruments with inductive contacts suitable for hazardous areas
💪
Durable, vibration-resistant design for harsh industrial environments
🌡️
Measures broad temperature ranges from -50°C to 600°C
⚙️
Customizable options including various stem lengths, diameters, and case materials

Applications

🔥
Boilers, pipelines, and machinery process control
❄️
HVAC systems heating and cooling regulation
🧪
Chemical & petrochemical industries
🍽️
Food processing facilities
🏭
Iron and steel manufacturing
💧
Hydraulics and pneumatic systems
📡
Local temperature monitoring with automatic signaling

Frequently Asked Questions

Q What temperature range can this bimetal thermometer with switch measure?
This thermometer can measure a wide temperature range from -50°C to 600°C, with a maximum process temperature of 400°C. The ambient operating temperature is rated from -25°C to +65°C, making it suitable for a broad range of industrial environments.
Q What contact function options are available for the switch output?
Multiple contact configurations are available: Single contact N.O. (1a), Single contact N.C. (1b), Double contacts N.O.+N.C. (1a1b), Double contacts N.C.+N.O. (1b1a), Double contacts N.O.×2 (2a), and Double contacts N.C.×2 (2b) — all using a sliding switch SPST type.
Q Can the stem length and material be customized?
Yes. The stem is available in SS304 as standard or SS316 upon request. The stem bulb diameter can be 6mm or 8mm, and the length ranges from 50mm to 500mm. Custom configurations are available to suit specific installation requirements.
Q What is the accuracy class of this thermometer?
The standard accuracy is Class 1.6 as per EN 13190. A higher accuracy of maximum Class 1.0 is also available upon request, providing greater precision for demanding measurement applications.
Q Is this thermometer suitable for use in hazardous or harsh environments?
Yes. The thermometer features an IP65 protection rating, making it dust-tight and protected against water jets. It is also vibration-resistant and designed for harsh industrial environments. Models with inductive contacts are available for use in hazardous areas.
Q What thread connection types are supported?
The thermometer supports multiple thread standards including PT (BSPT/ZG), BSP (G/PF), and NPT, in sizes 3/8" and 1/2". Other thread types can be provided upon request, ensuring compatibility with various piping systems worldwide.

Related Products