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VH400 - Low-Cost Soil Moisture Sensors Quick view

Reference: VH400-2M

Brand: VEGETRONIX

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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...
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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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SBG01 Heat Flux Meter
  • SBG01 Heat Flux Meter
  • SBG01 Heat Flux Meter

SBG01 Heat Flux Meter

SBG01

Water-cooled heat flux sensor

SBG01 is a water-cooled sensor that measures heat flux. The ISO standards call this a heat flux meter. Introduced in 2008, SBG01 has rapidly become the sensor of choice for fire testing. SBG01 is mainly used to test reaction to fire and fire resistance. It is also used as a calibration reference standard for test equipment, for example in flammability and smoke chamber tests. SBG01 complies with the requirements of the most common ASTM and ISO standard test methods.

Quantity

Description

Specifications

Measurand
heat flux
Measurement range
(5, 10, 20, 50, 100, 200) x 10³ W/m²
Measurand (in SI units)
irradiance in W/m²
Sensor technology
both Gardon and Schmidt-Boelter
Rated cooling water temperature range
10 to +30 °C
Rated cooling water flow
> 10 l/h (0.003 l/s) preferably 30 l/h (0.01 l/s)
Rated measurement ranges
(5, 10, 20, 50, 100, 200) x 10³ W/m²
Response time (63 %) at different measurement ranges
:
5, 10 x 10³ W/m²
< 450 x 10⁻³ s
20, 50 x 10³ W/m²
< 250 x 10⁻³ s
100, 200 x 10³ W/m²
< 200 x 10⁻³ s
Limiting measurement range
150 % of rated measurement range
Output signal
DC voltage
Output signal range
> 5 x 10⁻³ V at rated measurement range
Spectral range
0 to 50 x 10⁻⁶ m
Full field of view angle
180°
Black coating emissivity
> 0.90
Calibration traceability
to ITS-90
Calibration laboratory
:
-management system certification
ISO 9001
-accreditation
not accredited
Calibration method
SBGC secondary calibration method according to ISO 14934-3
Standard cable length
2 m (see options)
Order code standard version
SBG01/rated measurement range/cable length

Options

  • Nominal measuring range (5, 10, 20, 50, 100, 200) x 10³ W/m²
  • Longer cable (5 m, 10 m and 20 m)
  • Smooth cylindrical body without flange (model SBG03)
  • A thermocouple (type T or K) can be installed on request
  • For more options, see the user manual

Description

There are 6 models of SBG01
The SBG01 measures heat flux in the range (5 to 200) x 10³ W/m². Equipped with a black absorber, heat flux sensors of this type are designed for measurement in an environment where heat flux is dominated by radiation. By using an open detector, the SBG01 is also sensitive to convective heat flux. This contribution is often ignored. Application in environments with irradiance levels below 50 x 10³ W/m² or environments with significant convective heat transport is possible, but requires careful assessment of measurement uncertainty.

The SBG01 thermopile sensor generates an output voltage proportional to the incoming irradiance. The sensor is water-cooled. There are 6 models of SBG01; each with a different nominal measurement range, calibration reference irradiance level, sensitivity and response time. Water cooling is usually done with tap water. There are several optional body designs. The standard body is fitted with a smooth cylindrical body and a flange. The most common options are a smooth cylindrical body without flange (model SBG03). In addition, a thermocouple (type T or K) can be fitted on request.

Advantages
The SBG01 has a novel sensor design, combining the benefits of the reed technology of traditional Gardon meters with those of the thermopile technology of traditional Schmidt-Boelter meters. The SBG01 has several advantages:

Robust and useful water tubes
Scratch-resistant absorbent coating (slightly recessed surface)
Safe storage with a practical protective cap

Suggested use
The SBG01 has quickly become the sensor of choice for fire testing. The SBG01 is primarily used for testing reaction to fire and fire resistance. It is also used as a calibration reference standard for test equipment, for example in flammability and smoke chamber testing.

Product Details
SBG01
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