Taco, Inc.
Cranston, RI 02920
Mar 23, 2009 Featuring microprocessor-based, variable speed differential controller, Delta T 00 Circulator enables users to accurately calculate and adjust for heat loss because it automatically adjusts to deliver optimal heat transfer based on actual operation of system on continuing basis. Unit is suitable for use in multi-zone radiant manifolds with loop actuator and in series loop systems using zone valves.

PolyScience Div. Of Preston Industries Inc.
Niles, IL 60714 4588
Oct 16, 2008 With 6, 13, or 28 L capacities, Refrigerating/Heating Circulating Baths are offered with choice of controllers. Programmable Controller offers LCD display, ±0.01°C temperature stability, and time/temperature programming, while Advanced Digital Controller has variable-speed pump and RS-232 interface. Featuring 2-speed pump, Standard Digital and Basic Controllers, suited for applications where temperature set points remain relatively static, have stability of ±0.05 and ±0.2°C, respectively.

PolyScience Div. Of Preston Industries Inc.
Niles, IL 60714 4588
Oct 13, 2008 With working temperature range of -40 to 200°C, Model 9712 suits applications including control of jacketed reactor vessels and reaction blocks as well as polymerization, polycondensation, and distillation. It features ±0.01°C temperature stability, 13 L reservoir, and variable-speed pressure/suction pump capable of delivering pressure flow rates up to 30 Lpm. Offering data logging capability, programmable controller stores up to 10 different 50-step time/temperature programs.

PolyScience Div. Of Preston Industries Inc.
Niles, IL 60714 4588
Oct 13, 2008 Suited for general laboratory applications where set points seldom vary, Model 9106 Circulator provides cooling or heating for viscometers, electrophoresis cells, and other lab devices at temperatures from -20 to +150°C. It offers one-touch temperature selection, PID temperature control, and ±0.05°C temperature stability. Requiring less than one sq-ft of bench space, unit features 3 user-programmable temperature presets, 6 L reservoir, and integral 2-speed pump.

PolyScience Div. Of Preston Industries Inc.
Niles, IL 60714 4588
Oct 13, 2008 Model 7306 Immersion Circulator offers ambient temperature range of 5-150°C, ±0.05°C temperature stability, and 3 user-settable temperature presets for setpoint changes. It features integral 2-speed pump for internal as well as external circulation, user-adjustable over-temperature safety, and low-liquid level cutoff. Unit occupies 6½ x 4¾ in. area within bath, and is available for both 120 and 220 V operation.

Bell & Gossett
Morton Grove, IL 60053
Oct 08, 2008 Designed for domestic hot water and closed-loop heating systems, NRF-25 and NBF-25 employ 3-speed switch and motors that promote coverage for range of hydraulic capabilities. Elements of construction include DuraGlide(TM) Bearing System, heat-resistant and non-metallic closed impeller design, as well as self-cleaning particle shield. Covering multiple hydraulic settings, circulators offer flow rates from 24-45 gpm and heads from 19-33 ft. Optional check valve is available for NRF-25.

Cole-Parmer Instrument Co.
Vernon Hills, IL 60061
Oct 06, 2008 Integrating pumps, cooling systems, and heaters, Polystat® laboratory circulators are designed for optimal heat exchange efficiency, uniformity, and reservoir agitation. Digital, advanced digital, and programmable controllers are available in 6, 13, and 28 L models. Closed laboratory circulator, used for heating/cooling from -10 to +80°C, has sealed design that minimizes fluid evaporation and prevents fluid contamination. It maintains temperature to 0.1°C with flow rates to 12 Lpm.

RF Micro Devices, Inc.
Greensboro, NC 27409-9421
Apr 23, 2008 Intended for wireless infrastructure applications, PCxxxAG-21H Series is manufactured with samarium cobalt magnets packaged in aluminum housings. Units cover 5 major cellular frequency bands from 869-2,170 MHz, while exhibiting optimal intermodulation distortion performance. Offered in industry standard 1 x 1 in. packages, all drop-in circulators are lead-free and RoHS compliant.

Thermo Fisher Scientific
Waltham, MA 02454
Mar 03, 2008 Able to control temperatures from -10 to +80°C, HAAKE EZ Cool 80 is constructed of stainless steel and has bathless design that minimizes evaporation of temperature fluid during daily use. In addition to heating and cooling external applications such as analytical instrumentation, jacketed reactors, and rotary evaporators, product can also be used to replace tap water cooling in small lab applications.

PolyScience Div. Of Preston Industries Inc.
Niles, IL 60714 4588
Sep 20, 2007 Offering precise temperature control for range of applications, 9500 Series is available with choice of 3 controllers and integrated simplex or duplex pump. Products are capable of operating temperatures up to 200°C and provide cooling capability down to -30°C with ±0.01°C temperature stability. Model 9512 features programmable controller with LCD, multi-language help menus, and time/temperature programming. It stores up to ten 50-step programs and offers data logging capability.

Bell & Gossett
Morton Grove, IL 60053
Jun 02, 2006 Suited for residential and light commercial heating systems, Models NRF-36 and NRF-45 are equipped with 3-speed motors, which allow pumps to cover wide range of hydraulic capabilities. Units include DuraGlide(TM) Bearing System, heat-resistant and non-metallic closed impeller, and self-cleaning particle shield.

Caron Products & Services, Inc.
Marietta, OH 45750 0715
Jul 27, 2004 Low-volume, hydraulically sealed Unistat 291w provides temperature control for various critical processes and applications such as kilo labs, process research, miniplants, and production. It features cooling capabilities up to 19.0 kW with 24.0 kW of heating, and delivers efficient heating and cooling over -90 to +200°C range.

Torrey Pines Scientific, Inc.
San Marcos, CA 92069
Jul 21, 2004 EchoThermâ„¢ Model CB20 Constant Temperature Chilling/Heating Mini-Circulator is Peltier-based for heating and chilling and requires no compressors or CFCs. Temperature range is 4.0–70.0°C, accurate to ±0.1°C. Settable in 1% increments, variable pumping range is 0–300 ml/min. Circulator includes transparent reservoir cover, 3/32 x 4 in. stainless steel platinum RTD probe, 3 ft cable, and RS232 I/O port for computer control or data logging.

Airmaster Fan Co.
Jackson, MI 49203
Feb 23, 2004 Heavy Duty Air Circulators are available with 3-speed, 115 V, oscillating and non-oscillating motors and single-speed, 3-phase explosion proof motors. Propeller produces low noise levels and is self-cleaning due to highly polished surface. Complete selection of mounting accessories is available.

Caron Products & Services, Inc.
Marietta, OH 45750 0715
Dec 22, 2003 Model 2050W provides temperature control from -18 to 90°C. With pumping capabilities to externally circulate, CE-marked, 230 V unit is suited for end-user and OEM applications including electron microscopes, general laboratory apparatus cooling, water-jacketed incubators, rotary evaporators, and laser cooling.

VWR Scientific Products
West Chester, PA 19380
Sep 10, 2003 Series VWR™ and VWR Signature™ heated and refrigerated circulators are available with analog, standard, digital, or programmable controller. Electronic design allows intuitive and user-friendly programming and control. Redundant over-temperature and low liquid level detection safety are located on front of control panel for easy access. All refrigerated models contain purge port for bleeding inert gas, forming blanket over circulator’s bath, reducing condensation.

Mokon Div., Protective Closures LLC
Buffalo, NY 14207
Sep 10, 2003 Duratherm, Dual Zone Duratherm, and Duratherm HTP circulating water temperature control systems provide pump capacity of up to 10 hp, flow rates to 120 gpm, and heating capacity of up to 96 kw. They are available in single- and dual-zone configurations with temperatures up to 300°F. Products use non-corrosive materials in construction for rust resistance. They suit applications requiring higher flow and heating/cooling capabilities.

Caron Products & Services, Inc.
Marietta, OH 45750 0715
Jun 11, 2003 Unistat 169W has operating temperature range of -60 to 200°C with increased cooling of 40 kW at -40°C. Hydraulically-sealed circulator provides efficient temperature control for variety of processes and applications. Low fluid volume and high cooling-power density provide fast heating and cooling rates and require less power and thermal fluid.

Bell & Gossett
Morton Grove, IL 60053
May 09, 2003 Flange-connection Model SSF-12F/LW employs 115 V motor and consumes only 55 W of power. Suited for domestic hot-water recirculation systems in residential/light-commercial plumbing applications, it has max working pressure of 150 psi and operating temperature of 230°F. DuraGlide® bearing system maintains consistent start-ups, while double-sintered carbon bearings, ceramic shaft, and clearances allow circulator to resist calcium and chloride buildup.