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

Reference: UA-002-64

Brand: ONSET

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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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DT2040 20/40 Channel Vibrating Wire Thermistor Data Logger
  • DT2040 20/40 Channel Vibrating Wire Thermistor Data Logger
  • DT2040 20/40 Channel Vibrating Wire Thermistor Data Logger
  • DT2040 20/40 Channel Vibrating Wire Thermistor Data Logger

DT2040 20/40 Channel Vibrating Wire Thermistor Data Logger

DT2040

DT2040 20/40 Channel Vibrating Wire Thermistor Data Logger

The DT2040 is a purpose-built logger ideal for remote locations or for instruments that will require frequent reliable data recording.

Product Features

  • Battery powered for remote sites
  • Compatible with all VW sensors
  • 100-year memory backup
  • Easy-to-use software
  • Compatible with most spreadsheet programs
Quantity

Description

Overview
The DT2040: 20/40 Channel Vibrating Wire/Thermistor Data Logger is a low cost, battery powered data logger, designed for reliable, unattended monitoring of up to 40 sensors which may be any mix of vibrating wire sensors and thermistors, typically 20 vibrating wire sensors with their associated thermistors and/or thermistor strings.

The DT2040 is a purpose built logger ideal for remote locations or for instruments that will require frequent reliable data recording. The DT2040 connects to all vibrating wire sensors including piezometers, crack meters, and strain gauges; however, it will not connect to vibrating wire sensors with auto resonant circuitry. Surge protection is available on each channel with ground lug on exterior of enclosure (ground rod required).

Vibrating wire sensors have unique advantages in geotechnical applications, as the frequency output of the gauge is immune to external electrical noise, able to tolerate wet wiring without signal degradation, and able to transmit the signal up to 1.6 kilometers without loss.

Data logger setup and data collection is done using a laptop. RST’s DT Logger Host Software is also included.

The DT2040 can also be equipped with an optional radio antenna (see photo) to incorporate it into an RSTAR or DT LINK wireless system.

Specifications

ITEM SPECIFICATION
Frequency Accuracy 0.002% Full Scale
Resolution 1 part in 65,000
Memory Records – 2 CHANNELS: Up to 303,000 records
– 40 CHANNELS: Up to 32,768 records
Including: time, 20 channels frequency, frequency, 20 channels temperature
Power Source Lithium compact or standard cell battery
(NOTE: standard cell required for radio use)
Battery Life Over 4 years (non-radio) standard cell
1.5 years (non-radio) compact cell
3 years (RSTAR, standard cell)
2 years (DT LINK, standard cell)
(NOTE: above specs based on 1-hour reading frequency and dependent on temperature and use)
Communication USB Type B connector (radio optional)
Dimensions Without mounting tabs: 349 x 301 x 162 mm (13.74 W x 11.85 D x 6.38 H in.)
With mounting tabs: 349 x 301 x 175 mm (13.74 W x 11.85 D x 6.89 H in.)
Temperature Range -40°C to 60°C (-40° to 140°F)
Enclosure NEMA 4X (IP65)
MEMORY SPECIFICATIONS
ITEM SPECIFICATION
Memory Size 4MB
Data Transfer 5,000 data points per second
Interval Mode 40 seconds to 1 day
Variable Rate Mode 16 user-programmable sampling rates
Time Format Month / day / year
Hour / minute / second
Memory Full Behaviour “Wrap around” or “fill & stop” option

Product Details
DT2040
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