Invented over 25 years ago by +GF+ SIGNET, the Rotor-X paddle-wheel insertion-flow sensor is a proven flow sensor. These highly repeatable, rugged sensors offer exceptional value with little or no maintenance required. Installation is simple with +GF+ SIGNET's comprehensive line of fittings for all pipe materials in sizes from DN15 to DN1000 (0.5 to 36 in.). Output signal of the 515 is a sinusoidal frequency capable of driving a self-powered flowmeter (3-5090). The 3-2536 has a process-ready open-collector signal and can operate to flows as low as 0.1 m/s (0.3 ft/s).

The +GF+ SIGNET 525 Metalex Flow Sensor offers the added strength of an all stainless steel construction with insertion paddlewheel technology. The result is a highly reliable sensor resistant to extreme pressures and temperatures. The Tungsten Carbide shaft with Fluoroloy B® bearing provide an increased length between maintenance. A comprehensive fitting program allows installation in steel lines with the mini-block for small diameters, and either the mini-tap or saddle for pipes up to DN300 (12 in.). The self-generating signal output allows use with battery operated flow monitor (3-5100).

The +GF+ SIGNET 2540 offers the added strength and corrosion resistance of stainless steel for applications with low velocity measurements. Unique internal circuitry eliminates the need for magnets in the process fluid, enabling lower flow measurement while maintaining the advantages of insertion sensor design. Now utilizing Fluoroloy B bearings and Tungsten Carbide pin for exceptional wear resistance. Improved circuitry provides greater immunity to large voltage disturbances encountered in field wiring. The 2517 Brass High Performance sensor signal allows for remote totalization when coupled with the 5100 Battery operated Flow Monitor.

Engineered specifically for small diameter applications, the +GF+ SIGNET 2100 Turbine Flow Sensor provides accurate readings in two flow ranges: 0.1 to 1 gpm and 0.8 to 10 gpm (metric conversion: 0.3 to 3.8 lpm and 3 to 38 lpm). The injection-molded PVDF body and ceramic bearings provide excellent chemical compatibility and long service in dosing and batching applications. Union piping and tubing connections along with removable NEMA 4X electronics allow for easy assembly and field replaceability. The 2100 can be used with 1/4", 3/8" or 1/2" tubing, or 1/2" piping for installation flexibility. End connections are available in PVDF for hose barbs, flare ends, fusion socket or IR/butt fusion, and in PVC for socket or NPT thread.

The +GF+ SIGNET 2000 MicroFlow Sensor is constructed from PPS which provides high material strength. The 2000 offers two flow ranges starting at 0.03 or 0.7 gpm, for clean process liquids, regardless of fluid color or opacity. This sensor can be connected to flexible tubing or rigid pipe, and uses standard hardware for mounting. Only one moving part and a low pressure drop across the sensor reduces operating costs and maintenance requirements.

The +GF+ SIGNET 2507 Mini Flow Sensor contains a free-running rotor that is driven by the fluid flow. Within the given measurement range, the rotational speed of the rotor is proportional to the fluid flow rate. Permanent magnets built into the rotor actuate an electronic switch in the top of the sensor generating a square-wave output signal proportional to flow rate. Both opaque and transparent fluids can be measured from 0.2 to 20.0 centistokes.

The +GF+ SIGNET 3519 Flow Wet-Tap Valve serves as a unique interface between the installation fitting and the extended length +GF+SIGNET 515 or 2536 Rotor-X flow sensor. It provides a fast method of removing the sensor from the pipe under specified operating pressures. The PVC & stainless steel design of the Wet-Tap makes it resistant to corrosion and chemical attack by acids, alkalies, salt, and a number of other harsh chemicals.

+GF+ SIGNET Vortex Flow Sensors provide extremely accurate and reliable flow measurement with no moving parts. PVC, PP, PVDF & SYGEF HP-PVDF material choices accommodate applications ranging from chemical delivery to deionized water distribution. The sensors are injection-molded to achieve a smooth surface finish for cleanliness and better chemical compatibility, that also drastically reduces manufacturing inconsistencies and in-service particulation associated with machined surfaces. A variety of end connector options simplify installation and allow unparalleled configuration versatility. The sensors feature either frequency output or fixed 4 to 20 mA current output, and can be used with +GF+ SIGNET's comprehensive offering of flow instrumentation to achieve enhanced system functionality.

+GF+ SIGNET 7002 Vortex Flow Sensors provide extremely accurate and reliable flow measurement with no moving parts. Utilizing ultrasonic pick-up technology, these sensors are unaffected by normal piping system vibrations and have excellent turndown ratio. PVDF and High-Purity PVDF versions, sizes 3-inch and 4-inch (d90/DN80, d110/DN100), are available in wafer and flange configurations and should be your first choice for flow measurement applications from chemical delivery to UPW distribution. The sensors feature frequency and 4 to 20 mA output, and can be used with +GF+ SIGNET's comprehensive offering of flow instrumentation to achieve enhanced system functionality.

The 2550 magmeter has rugged construction that allows it to be installed in piping systems where suspended solids are present. Bipolar pulsed DC drive prevents galvanic reactions from coating the stainless steel electrodes. Simple insertion offers significant savings over full-bore magnetic flowmeters.

The new Signet 2551 Magmeter features no moving parts. All versions are constructed of corrosion-resistant materials to provide long-term reliability with minimal maintenance costs. Utilizing the comprehensive line of Signet installation fittings, sensor alignment and insertion depth are automatic. These versatile, simple-to-install sensors deliver accurate flow measurement over a wide dynamic range in pipe sizes ranging from 0.5 to 8 inches, satisfying the requirements of many diverse applications. Signet 2551 Magmeters offer a variety of output options for use with Signet flow instrumentation using a frequency or digital output. The blind transmitter or digital sensor interface is available for long distance signal transmission. Flow velocity measurement is compensated for temperature via an integrated temperature sensor.

+GF+ SIGNET 3300 Ultrasonic Flow Monitoring System advances the use of Doppler ultrasound technology in flow measurement by utilizing proprietary "Advance Spectrum" signal processing in measuring the entire flow stream. The result is reliable, power-efficient, low cost of ownership, liquid flow monitoring in open or closed channels. The Signet 3300 includes features tailored to meet common requirements in a variety of applications like water/wastewater, industrial waste and environmental monitoring.