Innovation in level sensing Level measurement for tanks using guided wave radar technology Level sensing technology Now oil and aqueous media capable
efector gwr level sensors for industrial applications efector gwr with guided wave radar technology The new quality standard in level monitoring Aqueous or oil media capable level sensor reliably monitors the level of coolants for machine tools even in difficult applications such as grey cast iron processing. The stainless steel probe withstands build up such as metal particles and grind swarf. In industrial applications such as hydraulic power units, the efector gwr reliably detects the level of system reservoirs and tanks ensuring proper operating conditions. Coolant monitoring Hydraulic power unit High performance at a low price provides all of the advantages of reliable level detection using innovative guided wave radar technology at a very low price. Alternative level solutions may offer a lower price but may not perform in challenging applications. Mechanical float switches can stick in an application due to deposits. Vibration forks offer slightly better performance, but multiple units are required to detect the level of the medium. Traditional GWR level sensors offer an improved performance, but at a very high price point. performance float switch efector gwr vibration fork GWR level price
An innovative measuring principle using guided wave radar technology evaluation electronics Introducing the efector gwr level sensor for measuring level in tanks Innovative level measurement The sensor uses guided wave radar technology to reliably detect the level of medium. Maintenance and wear free The sensing probe ignores deposits and build-up. Simple setup The sensor s 4-digit alphanumeric LED display establishes setpoints with hysteresis and window display Fast installation The probe is directly installed in the tank and can be cut to length. Electrical connection is made with an M12 connector. high frequency electronics level sensor applies reliable micropulse technology (TDR=Time Domain Reflectometry) to measure the distance travelled to the medium using electromagnetic pulses in the nanosecond range. Using the sensor s high frequency technology, these pulses are guided along the surface of the probe. transmitted pulse Echo time of flight principle using GWR technology. When the guided wave pulse hits the medium, it is partly reflected. The time between transmitting and receiving the pulse is directly proportional to the travelled distance which provides the current level of the medium. reflection echo
Signal strength signal strength is stronger than capacitive technology due to its higher frequency. The signal strength allows the sensor to ignore build up, making it more reliable in the application. is directly mounted into the tank via a threaded process connection or metal bracket. Power and output are provided with an M12 connector. If needed, the probe can be cut to length by the user. Easy installation The parameters such as medium, setpoint and reset-point are established by simply pressing a pushbutton. The current level and the parameters are visible at a glance on the 4-digit alphanumeric display. Even if there are deposits, the sensor reliably monitors the level of the medium. The stainless steel housing and sensor rod allow the sensor to be used in applications such as parts cleaning, coolant monitoring and water treatment. Reliable operation User-friendly parameter setting mechanical switch cost comparison: mechanical float switch with cleaning intervals versus the maintenance-free efector gwr level sensor Cost comparison: Using the efector gwr, costs can be reduced up to 70% compared to mechanical monitoring systems. The LR Series now offers longer probe lengths for depths up to 63. Longer probe lengths efector gwr 0 20 40 60 80 100 cost share [%] unit cost installation cost level display cost cleaning intervals cost unforeseen cost / breakdown
Technical data Application Output Connection 4...20 ma plus 1 PNP switching 3/4 NPT Aqueous media, coolants, cleaning agents, water 2 x N.O. / N.C. 3/4 NPT 4 x N.O. / N.C. 3/4 NPT 4...20 ma plus 1 PNP switching G 3/4 BSPP Part no. LR 3300 LR 7300 LR 8300 LR 3000 Aqueous media, coolants, cleaning agents, water, oil and low dielectric fluids** 2 x N.O. / N.C. G 3/4 BSPP LR 7000 4 x N.O. / N.C. G 3/4 BSPP LR 8000 Electrical design DC PNP Probe length [in] fits 10-63 probes (see probes and accessories below) Operating voltage 18...30 DC Current rating 200 ma Current consumption < 80 ma Dielectric constant water: > 20 oil: 2 20** Max. tank pressure -1 4 bar (60 psi) Power-on delay time 3 sec. Switch point accuracy ±(1.5 cm + 0.5% A)* ±(0.6 in +0.5% A) Repeatability ±0.5 cm (±0.2 in) Operating temp 0...60 C (32 140 F) Medium temperature 0...80 C (32 176 F) Protection IP 67 Function display LR 3xxx LR 7xxx LR 8xxx Display unit LED 2 x yellow 2 x yellow 4 x yellow Switching status LED 2 x green 2 x green 2 x green Display 4-digit alphanumeric display Materials (wetted parts) stainless steel (303S22), PTFE, NBR Housing materials FKM, NBR, PBT, PC, TPE-V, stainless steel (304S15), PTFE, PEI Connection M12 quick disconnect, gold-plated contacts * A = Active zone (probe length minus 50 mm) Probes and accessories M12 Micro DC cordsets Description Part No. Sensor Models Description Part No. 10 Probe (240 mm), 303 SS E 43203 18 Probe (450 mm), 303 SS E 43204 27 Probe (700 mm), 303 SS E 43205 39 Probe (1000 mm), 303 SS E 43207 47 Probe (1200 mm), 303 SS E 43208 55 Probe (1400 mm), 303 SS E 43209 63 Probe (1600 mm), 303 SS E 43210 (4-pin) 2 m, PUR, straight EVC 001 (4-pin) 5 m, PUR, straight EVC 002 (4-pin) 2 m, PUR, right angle EVC 004 (4-pin) 5 m, PUR, right angle EVC 005 Coaxial tubes (to be ordered separately) Type Description stainless steel Part No. 1 2 50 3 57 67 78 63 M12 x1 30 Dimensions (mm) 1 = 4-digit alphanumeric display I1 32 L 3/4 NPT*** 18 (450 mm), 304 SS 27 (700 mm), 304 SS 39 (1000 mm), 304 SS 63 (1600 mm), 304 SS E43218 E43219 E43220 E43221 2 = LEDs 3 = Programming buttons I2 A 6 8 G3 4 ** A coaxial tube and probe are required for use with low dielectric media. *** NPT process connector versions use LRx000 sensors.
ifm product line catalogs Position sensors and object evaluation Inductive sensors Inductive safety technology Magnetic and cylinder sensors Capacitive sensors Actuator and valve sensors Photoelectric sensors Object evaluation systems Fluid and diagnostic sensors Level sensors Flow sensors Pressure sensors Temperature sensors Diagnostic systems Networking and controls Identification systems Control systems for mobile vehicles Evaluation systems, power supplies AS-i bus system Connection technology Lit. No. B120710 ifm efector North America ifm efector USA 7100 Atwater Dr. Malvern, PA 19355 1-800-441-8246 www.ifm.com/us ifm efector Canada 3 1-855-436-2262 www.ifm.com/ca ifm efector Mexico Anillo Periferico 1816-1 Col. Hacienda San Jeronimo Monterrey, N.L. 64637 01-800-813-4363 www.ifm.com/mx