740 Membrane Test System
Product Descriptions
The 740 MTS is ideally suited for development of new ionomers and solid electrolytes. It offers rapid and accurate measurement of the through-thickness membrane resistance and conductivity as a function of temperature, humidity level and pressure.
The 740 MTS eliminates the time-consuming approach of catalyzing a membrane and assembling a fuel cell to evaluate the ionomer performance.
• Custom MTS4 Software for complete measurement process control and data acquisition
• CorrWare®, ZPlot® , MultiStat®, ZPlot·Lab™ & ZView® software for measurement and analysis of sample impedance
• Wet and dry gas mixing for accurate and precise RH control and rapid RH cycling
• Test chamber backpressure control, condenser and collection tank for high-temperature operation
• In-situ sample temperature and dew point measurement for real-time RH monitoring
• Uses bare (non-catalyzed) membranes
• Small sample size 6 mm x 30 mm
• Spring -loaded sample compression—easy, repeatable sample loading up to 400 PSI (2.76 MPa)
• Control and monitoring of multiple process temperatures
• Rapid, easy cell assembly with accurate and repeatable sample compression
• Cell lock-feature for safe operation at elevated temperature, pressure and H2 gas
• Automatic shutdown and N2 purge on alarm condition
• Detailed cell assembly instructions and data analysis procedure
• Native USB interface to PC for easy set-up
• Safety features include alarm conditions and automatic hardware shutdown for safe, reliable operation.
| Gas and Humidification System: | |
| Humidifier | 316 SS material, designed for 100% gas saturation, auto water fill |
| Mass Flow Control | Two; Wet and Dry, 0 – 500 sccm each (allows variable wet gas % and RH control) |
| Sample Gas Selector | Selects N2 or H2/other |
| Gas Pressure Switches | Two; N2 and H2/other |
| Gas Dewpoint Meter | One, capacitance-type sensor in sample chamber |
| Measurable Dewpoint | 0 to 100 °C |
| Set and Report Accuracy | +0.25% of span, +1 least significant digit |
| Set and Report Resolution | 0.1 0 C |
| Sensor Type | Thermocouples, Type T |
| Temperature (max) | 180 °C (chamber, sample), 120 °C (humidifier), 130 °C (gas transfer line) |
| Sample Chamber: | |
| Open/Close Mechanism | Threaded, screw-in cell head with integrated electrodes and locking-pin |
| Electrode Clamp Mechanism | Mechanical, spring-loaded, integrated with cell head |
| Electrodes | Platinum, proprietary four-terminal design (U.S. Patent No. 7,652,479) |
| Temperature Range | Ambient to 180 °C |
| Pressure Range | Ambient to 30 PSIG (207 kPa) |
| Post-Chamber Gas Flow Path | Heat exchanger, condensate collection tank, precision manual back pressure regulator, vent port |
| Physical and Environment: | |
| Operating Temperature | 15 – 35 0C |
| Power Source | 100 – 120 VAC; 50/60 Hz |
| Size, cm (in.) | 46 H x 28 W x 48 D (18 x 11 x 19); excluding installed cell head |
| Software inputs for each experiment | Chamber, humidifier and gas transfer line temperature set point; Pre-treatment (equilibration) time; |
| Total gas flow rate, Wet gas %, Gas type (H2other or N2), and Back pressure (manually set) | |
| Number of steps per experiment | Up to 100 |
