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Scribner  |  SKU: 740 MTS

740 Membrane Test System

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740 Membrane Test System

Scribner

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.

 

Specification: Details
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
Electrochemical Interface and Impedance Measurement: User-supplied Impedance Analyzer (Solartron Analytical 1260 FRA or Newtons4th PSM 1735 + IAI Interface recommended)
MTS4 software works with CorrWare®, ZPlot®, MuItiStat™ and ZPlot-Lab™ and direct control of Newtons4th FRA
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
Live Data Display: Sample temperature and dewpoint, RH value (calculated from dewpoint and sample temperature), Wet and dry gas mass flow rates, Measured impedance for a single frequency from ZPIot®, remaining step time
Data File Format: Tab delimited ASCII file. Contains time, total flow, wet and dry flow, % wet, temperatures

(dewpoint, sample, chamber, humidifier, gas transfer line), RH, pressure, gas type ZPIot® impedance data saved as standard *.z file compatible with ZView™.
CorrWare, ZPlot, MultiStat, ZPlot•Lab & ZView are trademarks of Scribner Associates, Inc. Nafion® is a registered trademark of E. I. du Pont de Nemours and Company.
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