Description
The Honeywell J48U-012-00-8HN34 is a 12-inch Type “J” thermocouple complete with mounting hardware, engineered for reliable and precise temperature measurement in HVAC, boiler, and industrial heating applications. Type J thermocouples utilize an iron/constantan junction, making them well-suited for a broad range of temperature sensing environments where accuracy and durability are essential.
Product Overview
This thermocouple assembly from Honeywell combines a 12-inch probe length with an integrated mounting bracket, allowing for straightforward installation in furnaces, boilers, heat exchangers, and other temperature-critical systems. The Type J designation indicates an iron-constantan sensing element, offering a strong millivolt output and dependable performance across a wide temperature range.
Key Features
- 12-inch probe length for deep-well or surface temperature sensing
- Type “J” iron/constantan thermocouple junction for accurate temperature measurement
- Integrated mounting hardware included for simplified installation
- Honeywell quality construction for long-lasting, reliable performance
- Suitable for HVAC, boiler, furnace, and industrial heating applications
- Designed as a direct OEM-style replacement or new installation component
Application
Ideal for use in commercial and residential heating systems, boilers, process heating equipment, and any application requiring dependable Type J temperature sensing. The included mount simplifies field installation and ensures secure, vibration-resistant placement in demanding environments.
Specifications
- SKU: J48U-012-00-8HN34
- Brand: Honeywell
- Probe Length: 12 inches
- Thermocouple Type: Type J (Iron/Constantan)
- Includes: Mounting hardware







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