Stevens Water Monitoring Systems, Inc. products

Meteorology / Weather Sensors

Stevens - Tipping Bucket Rain Gauge

The TB3 tipping bucket rain gauge features an integrated siphon mechanism designed to provide precise measurements across a wide range of rainfall intensities. Each unit comprises a collector funnel equipped with a stainless-steel leaf filter, an integrated siphon control system, an outer enclosure secured with quick-release fasteners, and a base housing the tipping bucket mechanism. The device is equipped with dual output reed switches protected by varistors to safeguard sensitive components against transient voltage spikes, as well as dual rainfall discharge outlets for water collection and analysis.

Met One - Tipping Bucket Rain Gauge

Met One precipitation gauges are high quality, reliable instruments that measure rain and/or snow. The tipping bucket allows for accurate, repeatable measurements and low maintenance. When a precise amount of precipitation is collected in one side of the bucket, gravity tips the assembly and activates a reed switch. A momentary electrical contact closure is provided for each increment of rainfall. The sample is discharged through the base of the gauge. The optional heating elements are thermostatically controlled to melt snow and ice and avoid evaporative loss.

Met One - Tipping Bucket Rain Gauge

The Met One 370 and 380 series all-metal rain gauges provide accurate precipitation measurement of rain and/or snow in all environments using a tipping bucket mechanism. The economical tipping bucket design allows accurate, repeatable measurements, requiring no regular maintenance, and are constructed out of corrosion-resistant materials, featuring a Teflon-coated bucket catch to help ensure a long service life. They exceed EPA specifications for precipitation monitoring.

Met One - Tipping Bucket Rain Gauge

Stevens / Dyacon - Dyacon Wind Direction and Speed Sensor

The Dyacon Wind Anemometer Sensor is a durable device designed to measure wind speed and direction. It utilizes three rotating cups or cones driven by the wind, with rotational speed corresponding to wind velocity. The wind direction is determined using a lightweight vane with an arm that aligns with the wind’s angle; the vane’s position indicates the wind direction. This Modbus-enabled smart sensor provides data on wind gusts and directional averages. Digital data are transmitted via the industry-standard Modbus RTU protocol, supporting long-distance connections to computers, programmable logic controllers (PLCs), Building Automation Systems (BAS), SCADA systems, and data loggers. An SDI-12 version is also available.

Met One - Wind Speed / Direction Sensor

The 010C Wind Speed Sensor provides accurate and detailed information on horizontal wind speed. The lightweight three-cup anemometer is used in virtually all applications where fast response and low starting threshold(s) are of paramount importance. The 020C Wind Direction Sensor provides azimuth data for use in micrometeorological measurements related to operational studies and research. The lightweight airfoil vane is directly coupled to a single precision potentiometer. These sensors are especially useful when a low starting threshold, a high damping ratio, or a short delay distance is required. Both wind speed and wind direction sensors are used in environments ranging from Antarctic cold to arid desert heat. The 01OC, 010C-1, and 020C instruments meet U.S. EPA and NRC performance specifications for critical regulatory, research or scientific measurement applications.

Met One - Wind Speed / Direction Sensor

The NEW 034E Wind Sensor combines wind speed and direction measurements in a single sensing unit. It installs in minutes and provides accurate, long-term, continuous monitoring in hostile environments. The sensor uses a quick-connect sensor cable which may extend hundreds of feet without affecting measurement performance.

Stevens / Dyacon - Globe Temperature Sensor

The Globe Temperature (GT) sensor measures the temperature of the environment in a way that mimics how humans and animals perceive heat. GT absorbs heat from radiation such as the sun, air, and convection.

Stevens / Dyacon - Barometric Pressure, Humidity, Temperature Sensor

The BHT is a digital sensor that measures barometric pressure, ambient temperature, and relative humidity. All sensing elements are integrated within a single probe and radiation shield. The BHT features a low-power, digital output with a Modbus RTU interface and has an optional SDI-12 connection.