Flange Mounted Temperature Sensors

-- Steady & Reliable Manufacturer --

Brief Description

Flange Mounted Temperature Sensors (RTDs or Thermocouples) provide a secure, high-integrity connection for measuring temperature in pipes, vessels, and reactors, eliminating potential leak paths common with threaded connections.

In-depth Overview

In critical processes involving high pressure, hazardous fluids, or large-diameter pipelines, a flange connection is the standard. Our flange-mounted sensors feature a fixed or adjustable flange that meets common standards (e.g., ANSI, JIS, DIN). The sensor element (often housed within a thermowell for easy removal) is welded or brazed to the flange, creating a robust, leak-proof seal. This design is highly favored in the petrochemical, power generation, and marine industries where safety and seal reliability are paramount.

Specification

Parameter	Details
Sensor Type	RTD (Pt100) or Thermocouple (Type K, J, N)
Flange Standards	ANSI B16.5, DIN EN 1092−1, JIS
Nominal Pipe Size (NPS)	1/2′′ to 4′′ (and larger)
Pressure Rating	Class 150 to Class 2500 (PN10 to PN420)
Wetted Material	Stainless Steel 316/316L, Duplex, Inconel
Immersion Length (U)	Customizable based on nozzle length and pipe diameter
Protection Head	Aluminum or SS Terminal Head (IP65+)
Optional Feature	Integrated Temperature Transmitter

Applications

High-Pressure Steam Lines: Monitoring high-temperature fluids in power plant tubing.
Refinery Process Vessels: Secure temperature measurement in large reactors containing hazardous liquids.
Pipeline Transportation: Monitoring product temperature in cross-country oil or gas pipelines.
Marine Engines and Boilers: Secure, vibration-resistant mounting for critical temperature points.

Key Advantages

Highest Seal Integrity: Flange connection minimizes risk of leaks, crucial for high pressure/hazardous media.
Robust and Vibration Resistant: Provides superior mechanical strength compared to threaded systems.
Easy to Specify: Standardized flange dimensions (e.g., ANSI Class 300, DN50) simplify engineering and procurement.
Thermowell Compatibility: Designed to be used with a matching flanged thermowell, allowing sensor replacement without process shutdown.

Payment and Shipping

We accept major international payments, including T/T and documented L/C. Since flange sensors are often custom-built to match specific project flange specifications (size, rating, material), the typical lead time is 4-6 weeks. We use specialized, heavy-duty wooden boxes and foam supports to protect the flange face and the long immersion length of the sensor during international transport.

Frequently Asked Questions

Q: Why choose a flanged connection over a threaded connection for temperature sensors?
A: Flanged connections are mandatory in high-pressure and high-temperature services (per pipe codes) and whenever zero leakage is critical (e.g., hazardous or expensive media). They offer superior mechanical strength and seal reliability.

Q: What is a thermowell, and why is it used with a flange sensor?
A: A thermowell is a protective metal tube permanently installed into the process line. The temperature sensor (RTD or TC) is inserted into it. Using a thermowell allows the sensor to be removed, calibrated, or replaced without draining the process line, saving significant downtime.

Q: Do you require material certificates for the flange?
A: Yes. For many critical applications, particularly in the oil and gas industry, we provide Material Test Reports (MTRs) confirming the alloy composition of the flange and wetted parts (e.g., 316L SS) to ensure compliance with project specifications.

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Flange Mounted Temperature Sensors Manufacturers

Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.