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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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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.
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HFP03 Heat Flux Sensor MYJ
  • HFP03 Heat Flux Sensor MYJ
  • HFP03 Heat Flux Sensor MYJ

HFP03 Heat Flux Sensor

HFP03

Ultra sensitive heat flux plate

HFP03 is an ultra sensitive sensor for measurement of small heat fluxes in the soil as well as through walls and building envelopes. The total thermal resistance is kept small by using a ceramics-plastic composite body. See also model HFP01: putting several HFP01 sensors electrically in series is an alternative for using HFP03.

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Description

Specifications

Measurand
heat flux
Measurement range
-2000 to +2000 W/m²
Sensitivity (nominal)
500 x 10⁻⁶ V/(W/m²)
Sensing area
64 x 10⁻⁴ m²
Sensor thermal resistance
71 x 10⁻⁴ K/(W/m²)
Sensor resistance range
10 to 32 Ω
Sensor thickness
5.4 x 10⁻³ m
Uncertainty of calibration
± 6 % (k= 2)
Rated operating temperature range
-30 to +70 °C
Cable diameter
4 x 10⁻³ m
IP protection class
IP67
Standard cable length
5 m

Description

Ultra sensitive sensor for measurement of small heat fluxes
HFP03 measures heat flux through the object in which it is incorporated or on which it is mounted, in W/m². HFP03 is specifically suitable for measurement of small flux levels, in the order of less than 1 W/m², for instance in geothermal applications. The sensor in HFP03 is a thermopile. This thermopile measures the temperature difference across the ceramics-plastic composite body of HFP03. A thermopile is a passive sensor; it does not require power. Using HFP03 is easy. It can be connected directly to commonly used data logging systems. The heat flux in W/m² is calculated by dividing the HFP03 output, a small voltage, by the sensitivity. The sensitivity is provided with HFP03 on its calibration certificate.

Suggested use

  • Extremely small heat flows
  • Geothermal heat flow
Product Details
HFP03
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