Measurement Cell for Online Analyzers | Chemical Manufacturing Component

Product Specifications

Technical details and manufacturing context for Measurement Cell

Definition

The measurement cell is a core component of online analyzers used in chemical manufacturing. It holds the sample—liquid or gas—and enables real-time analysis through optical, electrochemical, or other sensing techniques. Typically designed as a flow-through structure, it ensures continuous sample flow and stable measurement conditions. The cell is available in configurations with path lengths from 10 to 100 mm, cell volumes from 0.5 to 50 mL, and up to four optical paths, allowing sensitivity adjustment. It operates at temperatures from -20 to 120°C. Materials include 316L stainless steel (ASTM A240), sapphire windows, and PTFE seals. Connection sizes range from 1/4 to 1/2 inch, weight from 1.5 to 3.5 kg, and surface finish is Ra ≤ 0.4 μm (ISO 4287). Leak rate is ≤ 1×10^-6 mbar·L/s (ISO 15848). These values are reference ranges; verify model-specific specifications with the manufacturer. The cell is not a standalone analyzer but a component that integrates with sensors and electronics. It is used in applications requiring continuous monitoring, such as process control and quality assurance. Selection depends on sample properties, required sensitivity, and process conditions. Proper installation and maintenance are critical for reliable operation. The cell's design minimizes dead volume and fouling, but regular cleaning may be needed. Failure to operate within specified limits can lead to inaccurate readings or damage. Always consult the supplier for compatibility and installation guidance.

Working Principle

Sample enters the measurement cell through the inlet and flows through the cell, interacting with a sensor or optical path. The detection signal—such as absorbance, conductivity, or pH—is converted into an electrical signal, which is processed to yield the analysis result. The flow-through design ensures continuous sample exchange, maintaining representative conditions. The cell's path length and volume affect sensitivity and response time. The optical windows allow light transmission for spectroscopic measurements. The cell must be properly sealed to prevent leaks and maintain pressure. The electrical signal is transmitted to an analyzer for processing and display.

Common Materials

Stainless steel, Quartz glass, PTFE

Technical Parameters

Parameter	Typical range	Notes & selection driver
Path Length	10–100 mm	Determines sensitivity; longer path for low concentrations.
Cell Volume	0.5–50 mL	Affects sample residence time and response time.
Operating Temperature	-20–120 °C	Above 120°C may damage seals.
Material	316L	Corrosion-resistant stainless steel.ASTM A240
Window Material	Sapphire	High chemical resistance and optical clarity.
Seal Material	PTFE	Chemical inertness.
Connection Size	1/4–1/2 inch	Standard process connections.
Weight	1.5–3.5 kg	Depends on configuration.
Optical Path Number	1–4	Multiple paths allow adjustable sensitivity.
Surface Finish	Ra ≤ 0.4 μm	Smooth finish prevents fouling.ISO 4287
Leak Rate	≤ 1×10^-6 mbar·L/s	Ensures no sample loss.ISO 15848

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Cell Body Part
Provides the sample flow path and supports the optical windows.

Material: Stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Measurement Cell.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Inline Analyzer

View system integration details

Manufacturers of Measurement Cell

Manufacturer profiles associated with Measurement Cell.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the typical path length range for this measurement cell?

The path length ranges from 10 to 100 mm. Longer paths are used for low concentrations to increase sensitivity. The specific path length should be selected based on the application and verified with the manufacturer.

What materials are used in the measurement cell?

The cell is made of 316L stainless steel (ASTM A240), with sapphire windows and PTFE seals. These materials provide corrosion resistance, optical clarity, and chemical inertness. Confirm material compatibility with your process fluids.

What are the operating pressure and temperature limits?

The operating temperature range is -20 to 120°C. Exceeding these limits may damage seals or affect performance. Always verify the exact limits for your model.

How do I verify the leak tightness of the cell?

The cell has a specified leak rate of ≤ 1×10^-6 mbar·L/s (ISO 15848). To verify, perform a leak test according to the standard. Ensure proper installation and sealing to maintain this performance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar
flow rate:	0.1 to 5 L/min
temperature:	-20°C to 120°C

Measurement Cell

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards