840 Fuel Cell Test System
Scribner 840 Fuel Cell Test System
The Scribner 840: A Powerful Fuel Cell Test Station for Research and Education
The 840 is a complete fuel cell test station designed for research and university programs. This user-friendly benchtop system integrates computer-controlled instruments with advanced fuel handling hardware. Capable of testing various cell sizes (small to large single cells or short stacks), the 840 offers exceptional versatility.
Building on the success of the 850 series, the 840 excels in applications requiring gas flow rates up to 12 SLPM. Key features include:
- Dual Range Mass Flow Controllers: Precise control of anode and cathode gas flow across a wide range, perfect for RH cycling experiments.
- Input Selector Valves: Streamlined gas switching for efficient testing procedures.
- 16-Channel Data Acquisition Module: Capture comprehensive voltage and temperature data for thorough analysis.
The 840 incorporates Scribner's proven 890 Multi-Range Electronic Load, ensuring accurate current measurement across a broad range. Additionally, the system comes equipped with FuelCell®, the industry-leading software application renowned for its user-friendly interface and comprehensive control over station operation and experimentation.
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Scribner 840 Fuel Cell Data Sheet
The Scribner 890: Powerful Testing for Large Fuel Cells
The 890 tackles large single cells and short stacks with ease. Choose from 500W or 1kW electronic loads (up to 500A) for high-power testing (20V max). Its 16-channel data acquisition module integrates seamlessly with FuelCell® software for effortless analysis.
Advanced features include:
- Dual mass flow controllers for precise gas control
- Gas selector valves for automated switching between multiple gases
- Automated humidifier bypass for wet/dry cycling
- Large-capacity, self-filling humidifiers with heated gas transfer lines
- Flexible control modes (current, voltage, power) with real-time cell resistance monitoring
- Optional impedance spectroscopy & HFR for deeper analysis
- Safety features with automatic shutdown for reliable operation
| Heated Cuffs | For cell fixture interconnect fittings |
| HTBP | High temperature back pressure module |
| Auto BP | Automatic back pressure module |
| 881 FRA | Integrated FRA for High Frequency Resistance (HFR) and Electrochemical Impedance Spectroscopy (EIS) measurement from 1 mHz to 10 kHz |
| Gas Mixing MFC’s | Additional MFCs for gas mixing on anode & cathode |
| Dual Area Cell Fixture | Test fixture for PEM / DMFC |
| DI Water Tank | Simple solutions for pressurized delivery for existing DI/RO water source |
| Electronic Load: | |
| Maximum Load Current | 5/25/50 A or 10/50/100 A (configuration dependent) |
| Maximum Load Power | 100 W |
| Minimum Load Resistance: | < 2 mΩ (100 mV @ 50 A at load terminals) |
| Current Resolution: | 1 mA for 5/25/50 A; 10 mA for 10/50/100 A |
| Current Accuracy | 0.3% of full scale current of selected range |
Voltage Measurement and Data Acquisition: | |
| Max . Whole Cell Voltage | 20 V |
| Max . Reference Electrode Voltage: | 9.999 V |
| Voltage Resolution | 1 mV |
| Voltage Accuracy | ±3 mV ±0.3% of reading |
| Voltage & Current Data Update Rate | 100 Hz |
| Whole Cell Sense Input Resistance | > 35 kΩ |
| Reference Electrode Input Resistance | > 109 Ω |
| Impedance Analyzer (Optional 881): | |
| Internal Impedance Analyzer Type | Single sine, one generator and two gain/phase measurement channels |
| Internal Analyzer Frequency Range | 1 mHz to 10 kHz |
| Measurement Channels | Three: whole cell plus two half cell vs. Reference Electrode |
| Reactant Gas Control System | All 316 SS construction of humidifiers, flow path, valves and mass flow controllers, with Swagelok® fittings and heated reactant delivery lines |
| Mass Flow Control | Anode to 2 SLPM, Cathode to 5 SLPM Software controlled mass flow controllers Automatic N2 purge valves on Anode and Cathode |
| Alarms | Gas supply pressures(3), Humidifier water levels(2), External (1), System alarm output (1) |
| Back Pressure Control | Manual or Automatic, 0 – 2 bar (0 – 30 PSIG), requires optional 850BP or Auto BP accessory |
| Temperature Controllers | Three: cell, anode humidifier, cathode humidifier |
| Set & Report Accuracy | ±0.25% of span, ±1 least significant digit |
| Sensor Type | Thermocouple, Type T for cell (Type K optional for high temperature) |
| Humidifiers | Dual sparger-type, passivated 316L, 360 W heaters per bottle |
| Temperature Range | Ambient to 99 ° C; Optional: 120 ° C |
| Environment: | |
| Operating Temperature | 5 to 35 ° C |
| Power Source | 120 V, 50-60 Hz, 10 A (Export model 220-240 V, 50-60 Hz, 5 A) |
| Size and Weight | 18” H x 11” W x 19” D (+ 11” for heated gas lines); 50 lb .46 cm x 28 cm x 48 cm (+ 28 cm); 23 kg |
| Safety Features | Automatic shutdown and N2 purge on under-voltage, over-current, over-temperature, loss of reactant or purge gas pressure, low water, communications failure or external alarm Emergency Stop switch for manual operator shutdown |