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M&J UA-002-64 HOBO Pendant Temperature/Light 64K Data Logger Quick view

Reference: UA-002-64

Brand: ONSET

UA-002-64 HOBO Pendant Temperature/Light 64K Data Logger

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A miniature, value-priced, waterproof data logger for temperature and light monitoring applications; stores 52K measurements.  IMPORTANT INFORMATION Requires HOBOware software and either an Optic USB Base Station or a HOBO Waterproof Shuttle (U-DTW-1). HOBOware Pro is required when using the HOBO Waterproof Shuttle. See compatible items below.
Price €100.00
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VH400 - Low-Cost Soil Moisture Sensors Quick view

Reference: VH400-2M

Brand: VEGETRONIX

VH400 - Low-Cost Soil Moisture Sensors

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VH400 Soil Moisture Sensor Probe Specifications Power consumption: < 13mA Supply Voltage: 3.5V to 20 VDC. Dimensions See drawing. Power on to Output stable: 400 ms Output Impedance: 10K ohms Operational Temperature: -40ºC to 85ºC Accuracy at 25°C: 2% Output: 0 to 3V related to moisture content Shell Color: Red Voltage Output Curves: Curves, Piecewise...
From Price €78.00
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Flex-Stak Assembled MYJ
  • Flex-Stak Assembled MYJ

Flex-Stak Assembled

67130005

Flex-Stak Assembled

The Flex-Stak is a fully assembled, tested, and ready-to-use PEM fuel cell! Only a flathead screwdriver (1/4 inch) and torque wrench (<50 in-lb, 1/4 inch nut) are needed to disassemble the Flex-Stak so you can focus on building your own hydrogen-powered applications. Digital torque screwdriver sets or digital torque wrenches (with 0 to 100 in-lbs capacity) can also be used to assemble the Flex-Stak hardware.

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Description

Disassemble and reassemble your own fuel cell stack of individually connected cells with the Flex-Stak Hydrogen Air PEM Fuel Cell.  The Flex-Stak comes in a 1-cell, 5-cell, 10-cell, 15-cell, and 20-cell stack configuration depending on your hydrogen power requirements.  The ease of use makes it simple to scale the Flex-Stak to different power levels and integrate equipment such as sensors.  The Flex-Stak fuel cell is an excellent learning tool that gives hands-on experience with promising fuel cell technology.  Whether it’s advanced research on MEAs, creating your own fuel cell lab or conducting professional training, the Flex-Stak has a load of practical applications.


The Flex-Stak is a dismantable open-air cathode fuel cell that allows for users to input their own custom PEM MEAs for testing!

Stack Contents Include:
✔ Plastic Endplates
✔ Graphite Composite Bipolar/Monopolar Plates
✔ High Performance PEM MEAs
✔ Expandable Design (See Flex-Stak Expansion Kits)
✔ Hardware
 
Technical Properties:
• MEA Active Area: 3.2 x 3.2cm (10cm²)
• MEA Membrane Area: 5.3 x 5.3cm
• Graphite Plate Overall Dimensions (L x W x D): 6.3 x 6.3 x 0.4 cm
• Recommended Torque Value: 8-10 inlbs

Propiedades técnicas:
• Área activa MEA: 3,2 x 3,2 cm (10 cm²)
• Área de membrana MEA: 5,3 x 5,3 cm
• Dimensiones generales de la placa de grafito (L x An x P): 6,3 x 6,3 x 0,4 cm
• Valor de torsión recomendado: 8-10 inlbs

Flex-Stak Properties 1 Cell 5 Cell 10 Cell 15 Cell 20 Cell
Nominal Output - Watts 0.25 to 0.35 3 to 3.5 6 to 7 9 to 11.5 12 to 14
 Nominal Operating Voltage** 0.45 to 0.6 2.3 to 3 4.6 to 6 7 to 9 9.5 to 12
 Hydrogen Consumption (cc/minute) 10.6 53 106 162 400

The output values ​​provided are based on forced air operation.
**Flex-Stak nominal operating voltage per cell is typically around 0.45-0.6V, but could vary by 0.4-0.9V per cell depending on how hard the cell is being used (i.e. more current drawn will result in lower cell voltage, and less current drawn will result in higher cell voltage). H2 gas humidity and stack temperature will also play a role in output power (or voltage or current) values.

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