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   An anemometer is a device used for measuring wind speed. The term is derived from the Greek word anemos, meaning wind, and is used to describe any air speed measurement instrument used in meteorology or aerodynamics. The first known description of an anemometer was given by Leon Battista Alberti around 1450. The simplest form in common use is the cup anemometer, which catches the wind with rotating cups, usually four. Cup anemometers are still used for wind, power performance evaluations and site calibrations. An anemometer is also a common instrument used in HVAC. Specifically for indoor air quality and HVAC / R technicians measuring Heat / Ventilation...

  Used for greenhouse temperature monitoring, the Sper Scientific Min-Max Thermometer is available in two models. Model 736680 includes a magnetic float reset and features dual scales of -50/50°C & -60/120°F. Model 736690 features a push-button reset and dual scales of -50/50°C & -60/120°F. Sper Scientific Min-Max Thermometers allow easy spot checking of temperature in a greenhouse or other temperature-sensitive environment.  Sper Scientific Min-Max Thermometers are available at SperDirect.com.

The Sper Scientific Water Quality Meter Model 850081 uses interchangeable probes to read pH, mV, conductivity, TDS, DO, temperature and ORP, diminishing the need for multiple devices dedicated to testing limited parameters. The user can order probes for only the parameters currently required, and add additional probes in the future. Intelligent probes electronically retain calibration information. No recalibration is required when changing probes. The display simultaneously reads temperature in user selectable °C & °F, and all measurements are automatically temperature compensated. RS232 port enables communication with a computer. Also features auto power off, hold, min/max, fold-out easel back and a tripod...

 The Sper Scientific Advanced Datalogging Sound Meter (Model 850013) uses a single range of 30 ~ 130 dB.  This dynamic range eliminates the need to manually select and change ranges, alleviating the problem of lost data associated with range changes in auto-ranging models. All test parameters are simultaneously displayed on a large, bright backlit display featuring 0.1 dB resolution and a bar graph.  Automatically log up to 31,000 records for later download, or manually save and recall 99 data points with date and time stamp directly on the meter’s LCD. The bi-directional USB port and software enable control of the...

Water conservation is a frequently discussed topic in terms of household use, government regulations, agriculture, environmental quality and water management. As the global population increases, it is becoming more critical to manage water resources and the ecosystems that rely on them. An article found on the Science Daily discusses the components of a successful freshwater management plan and nine ways to save our waterways and fisheries. “Humans have put key freshwater ecosystems at risk because of land development and the loss of the vegetation along rivers and streams.” says John Richardson, a professor in the Dept. of Forest and Conservation Sciences...