METER Legacy Canopy Environment Sensors

METER Legacy Canopy Environment Sensors

DS-2 Sonic Anemometer (Discontinued)

See our new  ATMOS 22 Ultrasonic Anemometer 

Davis Cup Anemometer

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  • Picture

  • Description

    Wind speed and direction

    The Davis anemometer isn’t revolutionary—it’s all about simplicity. It measures wind speed and direction over your chosen measurement interval without complex setup, maintenance, or programming.

    Straightforward setup

    Setup is simple: mount with two screws, orient with a compass, plug into the logger, and start logging wind data.

    Wind: a critical soil moisture variable

    Wind is one of the main variables that determines how fast water moves through the soil-plant-atmosphere continuum. With the Davis anemometer, you can add this important variable to your soil moisture data set without a lot of hassle.

  • Specifications

     

    WIND SPEED ACCURACY± 5%
    WIND DIRECTION ACCURACY
    WIND SPEED RESOLUTION1 mph (0.45 m/s, 1.6 km/hr)
    WIND DIRECTION RESOLUTION1° (0 to 355°)
    WIND SPEED RANGE0 – 129 mph (58 m/s, 209 km/hr)
    START THRESHOLD3 mph (1.3 m/s, 4.8 km/hr)
    WIND DIRECTION RANGE0 to 360°
    MATERIALWind Vane and Control Head: UV-resistant ABS

    Wind Cups: Polycarbonate

    Anemometer Arm: Black-anodized aluminum

    DIMENSIONS18.5 in. long x 7.5 in. high x 4.75 in. wide (470 mm x 191 mm x 121 mm)
    WEIGHT2 lbs. 15 oz. (1.332 kg)
    DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE)
    METER Em50/50G, EM60/60G
  • Manuals and Software

LWS Leaf Wetness Sensor

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  • Description

    Detect leaf wetness and ice formation

    METER’s LWS leaf wetness sensor is standardized, calibrated, and designed to detect wetness (presence and duration) and ice formation right out of the box. No painting, baking, or user calibration required.

    Sensitivity without false positives

    Each sensor is precisely factory-calibrated to detect tiny amounts of water and/or ice on the leaf surface. The sensor surface coating is non-hygroscopic, eliminating false wetness detection.

    Mimics a real leaf

    The sensor’s thin (0.65 mm) fiberglass construction closely approximates the overall radiation balance of a healthy leaf, so moisture will condense and evaporate from the sensor at the same rate as it would on a normal leaf.

    Plug and read

    Get straight to the data with the Em50 series of data loggers. Just install the sensor, plug it into the Em50, set the clock and measurement intervals, and start logging leaf wetness data. No programming required.

    Want to use a different logger? No problem

    Compatible with other data loggers (e.g., those manufactured by Campbell Scientific). Some programming is required: sample CSI programs are available on request.

    Use the leaf wetness sensor:

    • To predict when to spray crops
    • To quantify water storage in the plant canopy
    • In studying and monitoring crops for foliar diseases including rust and blight

    See it in action:

    Utah State University’s Plant, Soils, and Climate department has set up a full weather station, and use the Leaf Wetness Sensor to monitor surface moisture. See the real-time data: View graph.

  • Specifications

     

    MEASUREMENT SPEED10 ms
    SENSOR TYPEFrequency domain
    OUTPUT320 – 1000 mV @ 3 V excitation
    OPERATING ENVIRONMENT-40°C to 60°C
    POWER2.5 VDC @ 2 mA, to 5 VDC @ 7 mA
    CABLE LENGTH5 m standard, custom lengths available
    CABLE CONNECTOR TYPES3.5 mm “stereo” plug or stripped and tinned lead wires (3)
    SENSOR DIMENSIONS11.2 cm x 5.8 cm x .075 cm
    DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE)METER EM50 Series, ProCheck, Campbell Scientific
    EXPECTED LIFETIME2 + years of continuous use
    WARRANTYOne year, parts and labor
  • Manuals and Software

ECT Air Temperature Sensor

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    ECT Temperature Probe
    Radiation shield for more accurate measurements
  • Description

    Measure air temperature

    The simple ECT air temperature sensor is an easy-to-use sensor for measuring the temperature of air (when used with the radiation shield) or other materials.

    Weatherproof for long-term use

    The sensor is completely water proof, submersible, and designed for continuous outdoor use.

    Plug and play technology

    The ECT can be used with either the EM5b logger or the EM50 logger series.  However, typical EM50 series logger users prefer to measure humidity in conjunction with their air temperature measurements using the VP-4 Vapor Pressure, Temperature, Barometric Pressure, and Relative Humidity sensor, instead of the ECT Temperature Sensor.

  • Specifications

     

    TEMPERATURE ACCURACY-40 to -20 °C: ±1.0 °C

    5 to 40 °C: ±0.5 °C

    40 to 50 °C and -20 to 5 °C: better than ±1.0 °C

    TEMPERATURE RESOLUTION0.1 °C
    TEMPERATURE RANGE-40 °C to 50 °C
    MEASUREMENT SPEED10 ms (milliseconds)
    SENSOR TYPEThermistor
    OUTPUT320 to 1000 mV @ 3 V excitation
    OPERATIING ENVIRONMENT-40 °C to 50 °C
    POWER2.5 VDC @ 2 mA, to 3.6 VDC @ 7 mA
    CABLE LENGTH3 m
    CABLE CONNECTOR TYPES3.5 mm “stereo” plug
    SENSOR DIMENSIONS3 cm x .075 cm
    DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE)
    METER Em50/50G, EM60/60G

    ProCheck

    WARRANTYOne year, parts and labor

     

  • Manuals and Software

VP-4 Humidity, Barometric Pressure, Temperature, and Vapor Pressure Sensor

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    VP-4 sensor
    Radiation shield for more accurate measurements
  • Description

    Relative humidity, barometric pressure, air temperature, and vapor pressure

    Use the rugged VP-4 sensor with soil moisture probes in microclimate and evapotranspiration studies.

    SDI-12 compatible

    Integrate into non-METER data loggers with the easy-to-use SDI-12 communication protocol.

    Compact

    This 5 cm x 2 cm sensor is able to fit into the smallest of spaces.

    Weatherproof

    Thanks to its unique Teflon screen, the relative humidity sensor can survive a deluge. Naturally, it won’t be transmitting accurately while waterlogged; but as soon as it has dried out, it’s back in the game.

    Fast response

    The Teflon screen protects the sensor from liquid water and dust without limiting diffusion of water vapor. The protected sensor is still able to quickly respond to changes in humidity.

    Integrated temperature for accuracy

    Accurate relative humidity readings require accurate air temperature readings taken at the same place and time. This sensor takes both measurements simultaneously for the best possible accuracy.

    Radiation shield included

    The included radiation shield is designed to improve air temperature readings by minimizing radiation and maximizing airflow over the surface of the sensor. Specially designed to preserve the correlation between actual air temperature and sensor air temperature while keeping the shield size small.

  • Specifications

    Figure 1: VP-4 Relative Humidity Accuracy

    Figure 2: VP-4 Vapor Pressure Accuracy

    Figure 3: VP-4 Temperature Accuracy

    RELATIVE HUMIDITY

    RANGE
    0 to 100% RH
    ACCURACY
    Sensor measurement accuracy is variable across a range of temperatures.
    Refer to the chart in Figure 1 to determine the accuracy specification for the VP-4 sensor.
    EQUILIBRATION TIME (Τ , 63%) 
    (τ, 63%): < 40 s (response time in 1 m/s air stream)
    HYSTERESIS
    < 1% RH typical
    LONG TERM DRIFT
    < 0.5% RH/year typical

    TEMPERATURE

    RANGE
    -40 °C to 80 °C
    RESOLUTION
    0.1 °C
    ACCURACY
    Sensor measurement accuracy is variable across a range of temperatures. Refer to the chart in Figure 2 to determine the accuracy specification for the VP-4 sensor
    EQUILIBRATION TIME (Τ , 63%) 
    < 400 s (response time in 1 m/s air stream)
    LONG TERM DRIFT
    < 0.04 °C / year typical

    VAPOR PRESSURE

    RANGE
    0 to 47 kPa
    RESOLUTION
    0.001 kPa
    ACCURACYSensor measurement accuracy is variable across a range of temperatures and RH. Refer to the chart in Figure 3 to determine the accuracy specification for the VP-4 sensor.

    BAROMETRIC PRESSURE

    RANGE
    49 to 109 kPa
    RESOLUTION
    0.01 kPa
    ACCURACY
    0.4 kPa

    GENERAL

    DIMENSIONS
    1.96 cm (dia) x 5.4 cm (h)
    POWER REQUIREMENTS
    3.6 to 15 VDC 0.03 mA quiescent, 4 mA during 300 ms measurement
    RESPONSE (MEASUREMENT) TIME 300 ms
    OUTPUTMETER Digital or SDI-12
    OPERATING TEMPERATURE-40 °C to 80 °C
    CONNECTOR TYPES3.5 mm (stereo) plug or stripped and tinned lead wires (pigtail)
    CABLE LENGTH5 m standard; custom cable length available upon request

    DATA LOGGER COMPATIBILITY
    (NOT EXCLUSIVE)
    METER Em50/50G
     (Firmware 2.19+), EM60/60G,
    Campbell Scientific: Any logger with serial I/O (CR10X, CR850, 1000, 3000, etc.)
    HANDHELD READER COMPATIBILITY
    ProCheck (rev 1.57+)
    SOFTWARE
    COMPATIBILITY
    ECH2O Utility (rev 1.74)
    DataTrac (rev 3.11+)
  • Manuals and Software

ECRN-50 Low-Resolution Rain Gauge

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  • Description

    Low-resolution rain gauge

    The best rain gauge for measuring irrigation events.

    Configure as volume gauge

    The ECRN-50 can be reconfigured to measure the output of irrigation systems in terms of either gallons or liters per hour.

    Single-spoon mechanism

    The single-spoon mechanism tips at 1 mm of precipitation/ irrigation; accuracy is ±2%.

    Durable

    Made of durable plastic that is UV, water, and frost-resistant.

  • Specifications

     

    RESOLUTION1 tip
    SENSOR TYPESingle spoon tipping bucket
    VOLUME PER TIP5.0 ml/tip
    RAINFALL PER TIP1 mm
    OUTPUTPulse
    CASE MATERIALABS
    OPERATING ENVIRONMENT0 °C to 60 °C
    CABLE LENGTH5 m
    CABLE CONNECTOR TYPES3.5 mm “stereo” plug
    SENSOR DIMENSIONS5 cm x 10 cm
    DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE)METER Em5bEm50/50G, EM60/60GProCheck
    WARRANTYOne year, parts and labor
    *The older model ECRN Rain Gauge used with EM5 loggers is not compatible with the EM50.

     

  • Comparisons
    RAIN GAUGEECRN-100ECRN-50
    MEASURESPrecipitationPrecipitation
    RESOLUTION0.2 mm1 mm
    SENSOR TYPEDouble-spoon tipping bucketSingle spoon tipping bucket
    DATA LOGGER COMPATIBILITYMETER Em5bEm50/50G, EM60/60GProCheck

     

    BEST IF…You want precise measurements of rainfallYou want estimates of irrigation events
    BUT NOT IF…You are interested in snowfallYou need high resolution rain event measurements
  • Manuals and Software

ECRN-100 High-Resolution Rain Gauge

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  • Description

    High resolution rain gauge

    The best rain gauge for measuring precipitation and for use in scientific research.

    Dual-spoon mechanism for better resolution

    Two internal tipping spoons make this rain gauge very sensitive, with one tip per 0.2 mm of rain.

    Durable

    Made of durable plastic that is UV, water, and frost-resistant.

  • Specifications

     

    RESOLUTION1 tip
    FUNNEL COLLECTOR DIAMETER16.0 cm
    HEIGHT16.0 cm
    VOLUME PER TIP4.02 ml/tip
    RAINFALL PER TIP0.2 mm
    SENSOR TYPEDouble-spoon tipping bucket
    OUTPUTPulse
    CASE MATERIALABS
    OPERATING ENVIRONMENT0 °C to 60 °C
    CABLE LENGTH5 m
    CABLE CONNECTOR TYPES3.5 mm “stereo” plug
    RAIN GAUGE DIMENSIONS17 cm x 14.2 cm
    DATA LOGGER COMPATIBILITY (NOT EXCLUSIVE)METER Em5bEm50/50G, EM60/60GProCheck
    WARRANTYOne year, parts and labor

     

  • Comparisons
    RAIN GAUGEECRN-100ECRN-50
    MEASURESPrecipitationPrecipitation
    RESOLUTION0.2 mm1 mm
    SENSOR TYPEDouble-spoon tipping bucketSingle spoon tipping bucket
    DATA LOGGER COMPATIBILITYMETER Em5b,

    ProCheck

    METER Em5b,

    ProCheck

    BEST IF…You want precise measurements of rainfallYou want estimates of irrigation events
    BUT NOT IF…You are interested in snowfallYou need high resolution rain event measurements
  • Manuals and software

PAR Sensor

PYR Solar Radiation Sensor

All-in-one plus one

The ATMOS 41 weather station is a simple, compact, connected device with the flexibility to do more than weather measurements. That is why we call it an all-in-one plus one, or two, or three…