Dwyer Products

Series 1900

Set Points from 0.07" to 20" w.c., Repetitive Accuracy within 3%. Our most popular series combines advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. Designed for air conditioning service, they also serve many fluidics, refrigeration, oven and dryer applications. For air and non-combustible compatible gases, Series 1900 switches have set points from 0.07 to 20" w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw located inside conduit enclosure. Internal location helps prevent tampering. UL, CE and CSA listed, and FM approved.

Ideal Applications:

• Air Conditioning
• Refregeration
• Ovens
• Dryers

Series V4, FLOTECT Vane Operated Flow Switch

Rugged and reliable the Series V4 Flotect® flow switch operates automatically to protect equipment and pipeline systems against damage from reduction or loss of flow. The V4 is time tested being installed in thousands of pipelines and processing plants around the world. A unique magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, a free-swinging vane attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm.

Features:

• Leak proof body machined from bar stock
• Weatherproof, designed to meet NEMA 4 Explosion-proof (listing included in specifications)
• Electrical assembly can be easily replaced
• High pressure rating of 1000 psig (69 bar) with the brass body and 2000 psig (138 bar) with the 316 SS body

Specification

• Temperature Limit: -20 to 135°C standard, MT High temperature option 205°C [MT option not UL, CSA, ATEX, or SAA]
• Mounting Orientation: Within 5° of vertical for proper operation
• Set Point Adjustment: For universal vane: five vane combinations
• Weight: 1.9 kg

Series 605

The Series 605 Magnehelic® Indicating Transmitter provides for both visual monitoring and electronic control of very low differential pressure. The Series 605 is ideal for control applications in building HVAC systems where local indication is desired during routine maintenance checks or necessary when trouble shooting the system. The easily read dial gage is complimented by the two-wire, 4-20 mA control signal utilizing the time-proven Dwyer® Magnehelic® gage mechanical design and Series 600 transmitter technology. The two-wire design with terminal strip on the rear simplifies connection in any 4-20 mA control loop powered by a 10-35 VDC supply.

Ideal Applications:

• Low Differential Pressure
• Buildings
• HVAC

Series IP

Converts a current input signal to a linearly proportional pneumatic output pressure. The features include built-in volume booster, low air consumption, field reversible (provides output which is inversely proportional to input signal) and flexible zero and span adjustments. The rugged NEMA 4X enclosure allows splashdown and outdoor installation. The IP can be used for applications that require operation of valve actuators, pneumatic valve positioners, damper and louver actuators, final control elements, relays, air cylinders, web tensioners, clutches and brakes.

Ideal Applications:

• Liquid Flow
• Gas Flow
• Water Flow

Series L4 FLOTECT® Float Switch

Rugged and reliable the Series L4 Flotect® Float Switch operates automatically to indicate tank level. Perfect for starting or stopping pumps, opening or closing valves, or actuating level alarm signals. A unique magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm. Float arm hinge design limits the arm angle to prevent vertical hang up.

Ideal Applications:

• Liquid Level Switch

Series L6 FLOTECT® Liquid Level Switch

Surprisingly compact, the Series L6 Flotect® Level Switch is designed and built for years of trouble-free service in a wide variety of process liquid level applications. Operation is simple and dependable with no mechanical linkage as the level switch is magnetically actuated. The float lever pivoted within the body moves when the process liquid displaces the float. A magnet on the opposite end of the float lever controls a second magnet on the switch actuating lever located in the switch housing.

Ideal Applications:

• Liquid Level Switch

Series MS

The Series MS Magnesense® Differential Pressure Transmitter is an extremely versatile transmitter for monitoring pressure and air velocity. This compact package is loaded with features such as: field selectable English or metric ranges, field upgradeable LCD display, adjustable dampening of output signal (with optional display) and the ability to select a square root output for use with Pitot tubes and other similar flow sensors. Along with these features, the magnetic sensing technology provides exceptional long term performance and enables the Magnesense® transmitter to be the solution for a myriad of pressure and flow applications.

Ideal Applications:

• Air
• Air Velocity
• Building Pressure

Series RM (RMA/RMB/RMC) Rate-Master® Flowmeter

The Rate-Master® Flowmeter line of direct reading precision flowmeters incorporates many unique user features at moderate cost. These low cost flowmeters are ideal for general use.

• Easy to read design
• Construction assures accuracy
• Simple Installation
• Easy-to-Interchange bodies
• Easy Cleaning

Ideal Applications:

• Gas Flow
• Liquid Flow

Series SBLT2 & SBLTX Submersible Level Transmitters

SBLT2 and SBLTX Submersible Level Transmitters are manufactured for years of trouble free service in the harshest applications. Both measure the height of liquid above the position in the tank referenced to atmospheric pressure. The transmitter consists of a piezoresistive sensing element, encased in a 316 SS housing. Bullet nose design protects the diaphragm from damage.

Ideal Applications:

• Liquid Level

Series UV Ultra-View™ Polysulfone Flowmeter

Setting a new standard in the industry, the Series UV Polysulfone Flowmeter is an ultra pure, laboratory grade flowmeter (±2% F.S. accuracy) that measures flow in GPM and LPM of water and other compatible media; SCFM and LPM of gas. The Series UV is designed to withstand high temperatures up to 212°F (100°C) and high pressures up to 150 psi (10.34 bar). Highly corrosion-resistant, this instrument is an excellent choice for monitoring many ultra pure applications such as food processing, reverse osmosis water systems, medical equipment and corrosive media. Easy to install and to clean, the Series UV offers optional panel mount polysulfone fittings and a protective polycarbonate shield.

Ideal Applications:

• Water Flow
• Air Flow

The Dwyer® Series 475

The Dwyer® Series 475 is ideal for field calibration, monitoring or trouble shooting HVAC systems, clean rooms or a wide range of other low pressure pneumatic systems. This handy instrument measures positive, negative or differential pressures of air and natural gases in ranges from 1 in. w.c. (0.249 kPa) to 150 psid (10.34 bar). The Series 475-FM is approved and is intrinsically safe for hazardous locations, Class 1, Div.1, Group A, B,C, D, T4. Its simple operation and easy to read digital display make it an indispensable test instrument for the plant engineer, industrial hygienist and HVAC technician. When used with a Dwyer® Pitot tube, the Series 475 Mark III can also be used as an air velocity gage.

Ideal Applications:

• Pressure
• Test Instruments
• HVAC

The Dwyer Series DM-2000

The Dwyer Series DM-2000 Differential Pressure Transmitter senses the pressure of air and compatible gases and sends a standard 4-20 mA output signal. The DM-2000 housing is specifically designed to mount in the same diameter cutout as a standard Magnehelic® gage. A wide range of models are available factory calibrated to specific ranges. Pressure connections are inherent to the glass filled plastic molded housing making installation quick and easy. Digital push-button zero and span simplify calibration over typical turn-potentiometers. An optional 3.5 digit LCD shows process and engineering units. A single bush button allows field selection of 4 to 6 engineering units depending on range on LCD models.

Ideal Applications:

• Fan & Blower Pressure
• Filter Resistance
• Air Velocity
• Furnace Draft
• Fluidic Systems