AMI
AMI 400

Chemisorption Analyser

User-friendly software, auto-lift furnace, flexible gas inlet system.
Precise gas control by 1 (Optional: 2 or 3) MFC(s), 8 (optional: 14) gas inlets.
Temperature range: RT-1200°C, Optional-130°C-1200°C.

Chemisorption AMI 400 ● User-friendly software, auto-lift furnace, flexible gas inlet system. ● Precise gas control by 1 (Optional: 2 or 3) MFC(s), 8 (optional: 14) gas inlets. ● Temperature range: RT-1200°C, Optional-130°C-1200°C.

The AMI-400 Series is the latest generation of fully automated chemisorption analysers developed by Advanced Measurement Instruments (AMI). After nearly three years of focused development—driven by evolving research demands and supported by a robust global supply chain—the AMI-400 Series has officially launched.

Engineered for precision, safety, and user-friendly operation, the AMI-400 characterises catalysts under both temperature-programmed and isothermal conditions. It provides detailed insights into surface chemistry, adsorption behaviour, and reaction mechanisms—making it an essential instrument for catalysis, materials science, environmental research, and energy innovation.

Standard：

• Temperature-programmed desorption (TPD)
• Temperature-programmed reduction/ oxidation (TPR/O)
• Temperature-programmed surface reaction (TPSR)
• Pulsed chemisorption
• Dynamic BET surface area

Options：

• Sub-ambient temperatures
• Mass spectrometer
• Gas chromatograph
• FTIR
• Vapor dosing

Key Features

Precise Thermal Conductivity Detector

The instrument is equipped with a high- precision, four-wire rhenium-tungsten TCD detector, featuring a constant temperature range from room temperature to 200°C. Additionally, filament types can be customized to match specific research needs, or the system can be integrated with auxiliary gas detectors such as mass spectrometers, FTIR, or FID, providing enhanced analytical versatility for a wide range of experimental applications.

All-in-One Constant Temperature

Precise Vapor Control – Ensures a stable and uniform temperature for consistent and reliable performance. Simplified Vapor Operation – Designed for easy and efficient vapor handling, optimizing experimental conditions and reproducibility.

Intelligent Gas Inlet Interface

A user-friendly port design eliminates the need for users to manually determine the type of gas used (carrier gas, process gas, or pulse gas); the software automatically selects the appropriate gas. The eight inlet ports meet daily testing needs, allowing multiple experiments without frequent gas interface changes, thus reducing user operations.

Integrated Constant Temperature Valve Box

The instrument’s process tubing is heated using a convection oven, maintaining a uniform temperature distribution with a maximum temperature of 130ºC. This design eliminates cold spots in the stainless-steel tubing, valves, and TCD detector, ensuring optimal performance and accurate measurements.

Precise Temperature Control

The system offers a temperature range from – 130°C (with optional configuration) to 1100°C, with linear heating ramps from 1 to 50°C/min.

Automatic Air-Cooling Module

Software – Controlled Automation – Enables precise and efficient cooling with no manual intervention required. Rapid Furnace Cooling – Utilizes air cooling technology to quickly lower furnace temperature, enhancing turnaround time and overall operational efficiency.

Accurate Flow Control System

High-precision MFCs regulate gas flow from 0-100sccm (+/-1% FS accuracy), ensuring stable, accurate measurements. A built-in mixing volume enables real-time gas blending for flexible experimental setups.

Cold Trap

A dedicated cold trap is installed downstream of the sample to effectively remove condensable substances before they reach the TCD detector, ensuring accurate measurements and extending the TCD’s operational lifetime.

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Software

User-Friendly Software Interface

A clear graphical interface with logical flow simplifies navigation, minimizes errors, and ensures smooth experimentation with real- time monitoring and traceable data logging.

The system offers comprehensive data processing capabilities, including peak fitting, peak separation, integration, differentiation, and overlay analysis of signal peaks. This enables precise characterization of surface features of catalysts, distribution of acidic and basic-sites, activation energy, reaction kinetics, and more.
• Clear Control System: Real-time monitoring with a visual software system
• Simultaneously displays gas flow, temperature, and other information.
• Real-time display of temperature programming
• Real-time display of valve status

Applications

Coked Catalyst

Metal Catalyst

Metal Catalysts

Catalysts

Specifications

AMI-400TPx	Temperature-Programmed Analyzer

Sample Loading	0.1 – 5 g
Number of Workstations	1 analysis station
Temperature Control Range	Room Temperature – 1200°C; -130°C (Optional) to 1100°C
Heating Rate	0.1°C/min – 50°C/min
Gas Input	1 Standard MFC C (Carrier MFC) with 8 gas inlets. Optional 2nd MFC T (Treatment MFC) with 8 gas inlets Optional 3rd MFC A (Auxiliary MFC) with 6 gas inlets Optional 4th MFC B (Blend MFC) with 6 gas inlets (BTC MFC)
Standard Operating Pressure	Ambient pressure
Mass Flow Controllers	1 Standard; Optional -2, 3, and 4
Gas Flow Rate	0-100sccm (+/-1% FS accuracy)
Sample Tube Type	Quartz U-shaped tube (6mm, 8mm, 10mm optional), bubble tube
TCD	Kalrez, 316 stainless steel
Materials of Construction	Tungsten-rhenium filament, room temperature up to 200°C
Dimensions	19.4 in (493 mm) × 26 in (661 mm) × 28.4 in (721mm), 162.8 lbs (74 kg)
High Temperature Oven	130°C
Vapor Generator	100°C (Optional)
Mass Spectrometer	Optional
FID	Optional