Adjustable-speed drives

A line of adjustable-speed drives designed for use in almost all applications, the VS drive line includes two adjustable-speed alternating-current (AC) drives, three microdrives, and a pump/fan drive. The VS1SP sensorless vector drive and VS1GV closed-loop vector drive are high-performance variable-speed AC drives that are useful in difficult applications regardless of what voltage, power rating, or performance level an application requires. Their removable keypads provide help-text information in a variety of languages. Ranging from ½ to 10 hp, VS1 microdrives are compact and feature user-friendly interfaces and design elements that ensure consistent motor control throughout a variety of voltages, horsepowers, and enclosure types. The VS1PF drive, available from 5 to 700 hp, is suited for the pump and fan industry. Its energy-savings mode adjusts output automatically based on load.
Baldor Electric Co.
Circle 100

Current sensors

A micro split-core current sensor, the Hawkeye 300 Current Switch fits in small enclosures. It takes one-third of the space that a standard split-core current sensor requires. It is useful for monitoring the status of vents, exhaust fans, recirculation pumps, and other fixed loads. The sensor provides a 100-percent solid-state design and polarity-insensitive output.
Veris Industries
Circle 101

CFD software

Flovent Version 7 computational-fluid-dynamics software simulates heating and cooling in buildings. The software features a response-surface-optimization capability that fits a 3D surface to an entire design space.
Flomerics Inc.
Circle 102

Heat pumps

Part of the Mr. Slim M-Series line of inverter-driven cooling-only and heat-pump products, the MSZ-A09NA indoor model has a cooling capacity of 9,000 Btuh and a heating capacity of 10,900 Btuh. It also has a seasonal energy-efficiency ratio of 17.0 and an energy-efficiency ratio of 13.0.
Mitsubishi Electric HVAC
Circle 103

Laser smoke detectors

The 7251DH air-duct smoke detector combines a high-sensitivity laser sensor with smoke-detection capability. It is well-suited for environments with high airflow and/or several air changes per hour, such as data centers.
System Sensor
Circle 104

Humidity/temperature transmitters

The Series RHL transmitter provides a stable, repeatable, and accurate means of measuring humidity or humidity and temperature in harsh environments. The polymer-capacitance sensor is not affected by condensation, fog, high humidity, or contaminants and is designed for years of calibration-free service.
Dwyer Instruments Inc.
Circle 105

Gas/air system

The WhirlWind gas/air-control and safety system features two automatic-shutoff valves in series, a zero-pressure regulator, and a patented swirlplate. Its random airflow pattern reduces resonance. The system mounts directly to combustion blowers and is Canadian Standards Association-certified.
Karl Dungs Inc.
Circle 106

Purgers

Now ETL-, United States-, and Canada-listed, the Oil-Acid-Moisture Purger is designed to continually clean oil, acid, and moisture from a chiller's refrigerant charge and return the oil to the chiller's compressor lubrication circuit/oil-reservoir sump. It regains chiller capacity and can save thousands of dollars in energy costs per year.
Redi Controls
Circle 107

Send product and literature releases to the attention of Megan White, associate editor, HPAC Engineering, The Penton Media Building, 1300 E. Ninth St., Cleveland, OH 44114-1503; e-mail: mwhite@penton.com. Electronic submissions are preferred.