RotorFlow® Sensors Combine Continuous Fluid Flow Sensing with Visual Indication
Plainville, CT – Gems Sensors & Controls introduces the RFO type of the RotorFlow Series of fluid flow sensors. RFO stands for “RotorFlow Output”, and is designed for flow rate monitoring or metering applications. RotorFlow RFO type sensors provide a pulsed DC voltage output that is proportional to the rate of flow. The 4.5 to 24VDC pulsed output is easily integrated into most digital logic units. What makes RotorFlow sensors unique is the highly visible paddlewheel that provides verification at a glance to confirm that fluids are moving. Typical applications for RotorFlow RFO type sensors include water purification, dispensing systems, chemical metering, laser and welders, semiconductor processing, water injection systems, and chillers and heat exchangers.
As liquid passes through the RotorFlow RFO body, a magnetic rotor spins at a rate proportional to flow. The magnetic fields turning with the rotor excite a static Hall Effect sensor, located in the body, and generate a series of voltage pulses. The output pulse voltage is equivalent to input (4.5 – 24 VDC), with a frequency proportional to the flow rate. Digital rate meters, totalizers, and other electronic controllers then utilize the output signal. A subset of the RFO type RotorFlow sensors is the RFA Type. These use the same operating principle, but instead of outputting a voltage pulse they are conditioned to provide an analog output signal of 0-10 VDC.
RotorFlow sensors are offered in ¼” to 1” port sizes, and monitor fluids with flow rates ranging from 0.1 GPM to 60 GPM (0.4 LPM to 227 LPM). Accuracy is dependent on model and flow range selected, and is typically within ±7%. RotorFlow sensors combine their high visibility rotors with solid-state electronics that are packaged into compact, panel mountable housings. Housing bodies are available in brass, stainless steel or polypropylene. Brass and SS bodies provide operating pressures (@ 70°F/21°C) to 200 psig (13.8 bar), while polypropylene allows 100 psig (6.9 bar). Maximum media temperature for polypropylene models is 180°F (82°C), and with brass or SS bodies is 212°F (100°C).
Gems Sensors & Controls
www.GemsSensors.com
Optic Level Sensor for Harsh Environments
November 20, 2009 by admin
Filed under Level, Liquid Level
GEMS Sensors & Controls has launched its new 950 Electro Optic Level Sensor (ELS) for a wide range of applications and industries. According to Gems, the new miniature, low cost ELS-950 was developed to perform in harsh environments with features such as an over-molded electronics insert, TPE insulated wires, and fluorosilicone O-ring seals to create a watertight, environmentally resistant assembly.
The ELS-950 is the next generation of the 900 series, as it is built on the proven technology of its predecessor line. Additionally the small, solid state sensor is durable enough to handle almost any application or temperature.
Gems says the ELS-950 is suitable for applications such as OHV, Medical diagnostic, sterilizer, and dialysis equipment; low lubricant warning on machine tools, and generator sets; construction, agricultural, and material handling equipment; coolant reservoir monitoring/warning and OEM food and beverage applications.
NEW ISOLATION VALVES ADDED TO GEMS FAMILY
October 30, 2009 by admin
Filed under Featured, Flow, Liquid Level
Gems Sensors & Controls announced their new K Series inert isolation solenoid valves. Constructed from chemically inert materials such as: PTFE, ETFE, EPDM, FKM, FFKM, PEEK, PPS and PSU; the K Series of isolation valves is an excellent choice for any application requiring various levels of chemical resistance and/or sample purity. Liquid Chromatography, Gas Analyzers and Water Quality Testers are just a few of such applications.
Offered in multiple body sizes, port configurations, wetted body and diaphragm materials; the K Series is a truly modular platform of direct acting round bodied solenoid valves allowing for superb power, flow, durability and life optimization. This line of inert valves is comprised of three groups: KS Series are 2-way valves with an MOPD of 20 PSIG;KM/KL Series are available in 2-way and 3-Way Directional configurations, with MOPDs up to 30 PSIG; and KV/KW Series offer 2-Way and 3-Way Directional configurations, with MOPDs as high as 20 PSIG.
How to Measure Pressure in Lines with Heavy Pressure Spikes
Simply install Gems 1200/1600 Series Pressure Transducers.
Here’s why:
It starts with a heavy SS diaphragm able to withstand pulsating pressure;
It’s paired with a high-sensitivity CVD sensor; laser welded for zero distortion;
A custom ASIC chip provides exceptional linearity correction and superior thermal compensation.
The combination of these components leverages the strength of sensing element. The resulting pressure sensor with a unique balance of performance and value, with exceptional proof and stability specifications.
Gems Sensors & Controls
www.GemsSensors.com
