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840 PEM Fuel Cell Test System 500W
840
New
The 840 PEM Fuel Cell Test System 500W is a turn-key test station for fuel cell research and university education programs. The 840 combines a computer-controlled instrument with fuel handling hardware in an integrated bench-top unit. The 840 is designed for use with small to large single cells or short stacks.
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The Model 840 is targeted for applications requiring gas flow rates up to 12 SLPM and is based on the time-tested 850 series of turn-key fuel cell test stations. The 840 features dual range anode and cathode mass flow controllers for wide range flow control which is ideal for RH cycling. Also included are input selector valves and a 16-channel data acquisition module for additional voltage and temperature measurements.
The Model 840 uses Scribner’s 890e Multi-Range Electronic Load for accurate, wide-range current measurement. And, the Model 840 comes with FuelCell®, the industry’s most powerful and user-friendly application software for controlling station operation and experimentation.
- Increased flow rate capability 6-12 SLPM
- Humidifier bypass for wet/dry testing
- Multiple current ranges for accurate measurement over wide dynamic range
- Impedance spectroscopy & HFR option
- Anode & cathode gas mixing options
- Suitable for up to 50 cm2 cells and small stacks
- 890e Electronic Load: 5/25/100 A 125 W, 10/50/100 A 125 W, 12/62/125 A 500 W, 25/125/250 A 500 W
- 892 Data Acquisition Module: 16 channels of voltage/temperature integrated with FuelCell®
- Dual anode & cathode mass flow controllers for enhanced accuracy over wide flow range
- Large capacity anode & cathode stainless steel humidifiers with automatic water fill
- Automated humidifier by-pass for wet/dry cycling
- Flexible stainless steel temperature controlled heated gas transfer lines
- Dual anode & cathode input gas selector valves
- FuelCell® software for user-friendly computer-controlled cell operation & experimentation
- Constant or stoichiometric-controlled reactant flow rate
- Constant current, voltage or power control modes
- Continuous, real time cell resistance measurement by Current Interrupt & HFR
- High impedance whole cell & reference electrode voltage sense inputs
- Simultaneous 3-channel whole- and half-cell EIS
- Automatic shutdown & purge for safe, reliable operation
- Single USB interface
- Automatic Water Fill Method (requires water feed at 30 PSIG min. or 20 PSIG above back pressure)
| Specifications: | Details |
|---|---|
| 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 880): | |
| 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) |
| Enclosure Type | Single bench top enclosure |
| 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 |
