Compact Analysis System for Monitoring Trace Moisture and Oxygen in Inert Gas Atmospheres
The MP-01 is a compact gas handling and analysis system for measuring trace moisture and residual oxygen in glovebox atmospheres. The system has been developed for laboratory applications using typical inert gases such as nitrogen or argon and is particularly suitable for processes where dry and oxygen-reduced atmospheres need to be monitored.
By combining proven AQUATRACE® trace moisture measurement with electrochemical oxygen measurement, the MP-01 provides a practical solution for research, development, quality assurance and materials science applications.
Typical Applications
The MP-01 is suitable for continuous or discontinuous analysis, for example of glovebox atmospheres, especially in the following fields:
- Battery research and battery materials
- Lithium, sodium and solid-state battery technology
- Handling of oxygen- and moisture-sensitive substances
- Synthesis processes under inert gas
- Materials testing and quality assurance
- Laboratory applications with nitrogen or argon atmospheres
The system is designed for non-corrosive, non-flammable gases in laboratory environments. For other media or special applications, we will be pleased to advise you on an application-specific basis. Upon consultation and approval, configurations for atmospheres containing corrosive components may also be possible.
Measured Parameters
The MP-01 measures two key parameters of the glovebox atmosphere:
Trace Moisture
Moisture measurement is performed using an AQUATRACE® ATT520V trace moisture transmitter. The measuring principle is based on phosphorus pentoxide technology and enables the determination of very low moisture concentrations in the ppmV or ppbV range.
Residual Oxygen
Oxygen measurement is performed using an electrochemical O₂ measuring cell. This allows the residual oxygen content of the inert gas atmosphere to be monitored and evaluated.
Design and Sample Gas Flow
The sample gas is supplied via a 6 mm compression fitting and guided through the internal measuring section. The typical gas path is as follows:
Gas inlet → needle valve → particle filter → oxygen sensor → trace moisture sensor → 3/2-way valve → flowmeter
The integrated needle valve is used to adjust the sample gas flow. The flowmeter enables direct monitoring of the flow rate.
If sufficient glovebox overpressure is available, the MP-01 can be operated without a pump. If the available overpressure is not sufficient, the integrated diaphragm pump can be switched on to ensure a stable sample gas flow.
Two Operating Modes for Flexible Laboratory Applications
Operation Without Pump
If the glovebox overpressure is sufficient, the sample gas is guided directly through the measuring section and then to the flowmeter. This operating mode is suitable for applications with a stable and sufficiently high gas flow.
Operation With Pump
If the glovebox overpressure is low, the integrated diaphragm pump can be switched on. It supports the overcoming of flow resistance caused by tubing, filters and the flowmeter.
The pump is structurally positioned downstream of the measuring section. This protects the sensor system. In addition, an integrated check valve prevents impermissible pressure build-up towards the sensors.
Advantages of the MP-01
- Combined measurement of trace moisture and residual oxygen
- Specifically designed for glovebox atmospheres with N₂ or Ar
- AQUATRACE® ATT520V trace moisture measurement in the ppmV / ppbV range
- Electrochemical O₂ measuring cell for residual oxygen monitoring; percentage and ppm measuring ranges available
- Integrated sample gas conditioning with particle filter, valves and flowmeter
- Operation with or without integrated diaphragm pump possible
- Compact system for laboratory environments
- Overpressure protection
- Web interface via TCP/IP RJ45
- Data export via USB stick
- Practical operation via touchscreen and external control elements
Operation and Interfaces
The MP-01 is designed for practical laboratory operation. Operation is carried out via the front display and the control elements accessible on the side of the unit.
Depending on the configuration, the following features are available:
- Touchscreen display
- Data logger
- TCP/IP RJ45 connection for web interface
- USB interface for data export
- 3/2-way valve for switching the pump mode
- PWM controller for pump control
- Flowmeter for flow monitoring
Please note: Permanent data logging only starts after the corresponding license code has been entered.
Technical Data
| Feature | Description |
|---|---|
| Product | MP-01 Trace Moisture and Residual Oxygen Analyzer |
| Application | Analysis of glovebox atmospheres |
| Typical gases | Nitrogen, argon |
| Moisture measurement | AQUATRACE® ATT520V |
| Moisture measuring principle | P₂O₅ electrolysis |
| Oxygen measurement | Electrochemical O₂ cell |
| Gas connection | 6 mm compression fitting |
| Flow rate | typically 20–70 Nl/h |
| Power supply | 150–250 VAC; battery operation on request |
| Operating environment | Laboratory environment, industry |
| Pump operation | Optional switchable internal diaphragm pump |
| Interfaces | TCP/IP RJ45, USB data export |
| Application limits | No corrosive gases, no potentially explosive atmospheres |
Notes on Intended Use
The MP-01 is an analysis system for measuring trace moisture and residual oxygen in inert gas glovebox atmospheres. The device is not a safety measuring device and is not intended for safety-related shutdown or personal protection functions.
Non-intended use includes in particular:
- Use with strongly corrosive gases such as NH₃ or HF in high concentrations
- Use in potentially explosive atmospheres
- Operation with impermissible overpressure or underpressure at the sensor system
- Use as a safety-related monitoring or shutdown system
For special applications or deviating process conditions, we recommend technical consultation with DKS.
