Heated Emission Sample Line for Flue Gas Conditioning and Analytical Instruments

Introduction

A heated emission sample line transfers gas samples from the sampling point to the analyzer while maintaining a controlled temperature throughout the line.

It is widely used with flue gas pretreatment equipment, online emissions monitoring systems, infrared analyzers, ultraviolet analyzers and laboratory testing instruments.

When a gas sample loses too much heat during transport, moisture or process components may condense inside the line. This can affect sample integrity, restrict flow and reduce the stability of analytical results.

Shenzhen Jingcheng High-tech manufactures customized heated gas sampling hoses with stable insulation, flexible installation and equipment-specific electrical and fluid connections.

Why Gas Monitoring Systems Need Heated Sample Lines

The sample path between the probe and analyzer may be several meters long. During this transfer, ambient air can remove heat from the gas.

A properly configured heated sample line helps maintain more stable sample conditions and may reduce:

• Sample condensation

• Moisture accumulation

• Internal contamination

• Sample-line blockage

• Unstable analyzer readings

• Extended system warm-up time

• Frequent cleaning

• Premature replacement

The required heating temperature must be selected according to the gas composition, moisture content and analytical method.

Key Features

Stable Heating up to 230°C

The standard hose supports temperatures up to 230°C. Other temperature requirements can be evaluated according to the inner tube, insulation and sensor configuration.

Uniform Heating Structure

Uniformly arranged heating elements help reduce temperature differences along the sample line and minimize localized cold sections.

High-Efficiency Thermal Insulation

The insulation layer reduces heat loss between the sampling probe and analytical equipment.

Flexible and Bend-Resistant Design

The hose is designed for flexible installation around gas pretreatment cabinets, monitoring instruments and laboratory equipment.

Customized Inner Sample Tube

The inner tube can be selected according to:

• Gas composition

• Corrosiveness

• Required temperature

• Sample purity

• Tube quantity

• Analytical method

Single-tube and multi-tube sample-line configurations can be evaluated according to the project.

Customized Electrical Configuration

Available options can include:

• 110V

• 220V

• 380V

• Other customized voltages

• PT100

• PT1000

• J-type thermocouple

• K-type thermocouple

• Custom aviation connectors

Typical Applications

• Continuous Emissions Monitoring Systems

• Flue gas pretreatment equipment

• Stack emission analyzers

• Infrared gas analyzers

• Ultraviolet gas analyzers

• VOC monitoring systems

• Combustion gas testing

• Laboratory gas analysis

• Industrial process monitoring

• Environmental monitoring equipment

• Heated sample conditioning systems

• Portable and fixed sampling equipment

Technical Specification Options

Reference Product Data

These figures are catalog reference data for the underlying hose structure. Final operating limits depend on temperature, inner tubing, fittings and the complete heated sample-line assembly.

Information Required for Selection

Please provide:

• Sample gas composition

• Required heating temperature

• Hose length

• Number of inner tubes

• Inner-tube diameter

• Inner-tube material

• Voltage

• Heating power

• Sensor type

• Probe-side connection

• Analyzer-side connection

• Electrical plug and pin arrangement

• Analyzer brand and model

• Installation environment

• Original sample line or technical drawing

Why Choose Shenzhen Jingcheng?

Factory-Direct Manufacturing

We manufacture heated hose and sample-line assemblies directly, supporting efficient technical confirmation.

Customized Analyzer Compatibility

The hose can be matched to different pretreatment systems, gas analyzers and monitoring cabinets.

Short Lead Time

Customized production can begin after the tube, sensor, connector and electrical specifications are confirmed.

Sample Support

Prototype sample lines can be manufactured for equipment testing.

Flexible Replacement Solutions

Replacement hoses can be developed from an original sample, drawing, equipment model or connector measurements.