Tip: if you're looking for drivers, manuals, or other technical support resources, search in the Stevens support site instead.

Cellular

GOES

900MHz

Teledesign TS4000 900MHz UHF/VHF

eTracker
True cloud-based sensor configuration, logging, reporting and data analysis all-in-one.

Bluetooth

Shark (RS232/RS485 Bluetooth Serial Adapter)

Software

Stevens-Connect
A cloud-based interface to configure hardware, visualize data, analyze measurements, manage alarms, calculations, and set up data routing.


MEASUREMENTS TO MIND (M2M) is a growing suite of Stevens products that embraces cloud-computing with an all-inclusive vision of shortening the communication path from the sensors to data on-line. That is, what the sensors MEASURE the MIND sees.


The product finder lets you explore our catalog visually and filter products by type of monitoring, manufacturer, and more.

Power

SOLO (smart SDI-12 power manager)
JL-2 (solar charge controller)
Batteries
Power Supplies
Solar Panels

SOLO
Smart SDI-12 power manager that also provides remote power cycling.


The product finder lets you explore our catalog visually and filter products by type of monitoring, manufacturer, and more.


The product finder lets you explore our catalog visually and filter products by type of monitoring, manufacturer, and more.


Li-Cor LI-200R

Pyranometer

Part # 51066

li-200r pyranometer

The LI-200R is designed for field measurement of global solar radiation in agricultural, meteorological, and solar energy studies. In clear unobstructed daylight conditions, the LI-200R compares favorably with first class thermopile type pyranometers but is priced at a fraction of the cost.

The LI-200R features a silicon photovoltaic detector mounted in a fully cosine-corrected miniature head. Current output, which is directly proportional to solar radiation, is calibrated against an Eppley Precision Spectral Pyranometer (PSP) under natural daylight conditions in units of watts per square meter (w/m-2). Under most conditions of natural daylight, the error is < 5%.

Ideal for agricultural, meteorological, solar energy, and environmental research, the LI-200R is available with a variety of cable lengths and is compatible with most data loggers.

  • Weather resistant and durable in long-term outdoor deployments
  • Measures global solar radiation under unobstructed natural daylight conditions
  • Uniform sensitivity up to 82° incident angle
  • Detachable sensor simplifies installation and removal, making it ideal for platforms with complex cabling

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What's the Easiest and Quickest Way to Start Collecting Data and Access it Anywhere?

The Answer's in the Cloud.

eTracker is a cellular modem and "virtual" cloud-based data logger in one (meaning you don't need to install a separate data logger). Simply connect your sensor and a power source to eTracker and you're done. Configure (or reconfigure) anytime from any Internet-connected device, and use Stevens-Connect to retrieve your data, or forward it to your favorite software system.

Technical Specifications

Absolute Calibration:

Calibrated against an Eppley Precision Spectral Pyranometer (PSP) under natural daylight conditions. Calibration uncertainty under these conditions is estimated as ± 3% typical, within ± 60° angle of incidence.

Sensitivity:

Typically 75 μA per 1,000 W m-2

Linearity: Maximum deviation of 1% up to 3,000 W m-2

Response Time:

Less than 1μs (2 m cable terminated into a 147 Ohm load)

Temperature Dependence:

± 0.15% per °C maximum

Cosine Correction:

Cosine corrected up to 82° angle of incidence

Azimuth:

< ± 1% error over 360° at 45° elevation

Tilt:

No error induced from orientation

Operating Temperature Range:

−40 °C to 65 °C

Relative Humidity Range:

0% to 95% RH, Non-Condensing

Detector:

High stability silicon photovoltaic detector (blue enhanced)

Sensor Housing:

Weatherproof anodized aluminum body with acrylic diffuser and stainless steel hardware; O-ring seal on the sensor base

Size:

2.36 cm diameter × 3.63 cm (0.93” × 1.43”)

Weight:

24 g head; 60 g base and cable (2 m) with screws

Cable Length:

2 m, 5 m, 15 m, 50 m (6.5’, 16.4’, 49.2’, 164’)