Product description: China tiankang TKWL-1900 RF admittance level switch is a material lelvel control technology, developed from capacitor technology, anti-hanging material, more reliable, more accurate and with more exte
China tiankang TKWL-1900 RF admittance level switch is a material lelvel control technology, developed from capacitor technology, anti-hanging material, more reliable, more accurate and with more extensive applicability. For radio frequency admittance, the meaning of admittance is reciprocal of electrical impedance, which is composed of resistive component, capacitive component and perceptual component comprehensively, while the radio frequency can be understood as emissing high- frequency radio wave, so the RF admittance level control technology realizes measurement for material level by measuring the admittance of measured medium with high-frequency radio wave. The most important difference between RF admittance technology and capacitive technology is diversified measurement and three-electrode technology. The diversification of RF admittance measurement lies in not only measuring capacitance but also resistance and inductance, which make the measurement more accurate. Three-electrode technology includes electronic unit and sensor, add shield electrode between measured electrode and ground electrode, protect measured electrode and not affected by hanging material. China tiankang TKWL-1900 RF admittance level switch Technical parameters •Requirement of power: AC system: standard: 185-255VAC 50/60Hz 5W (max) DC system: 24VDC system: 19~29VDC input 3W (max) •Output: SPDT relay (SPDT) Capacity of touch point 220VAC 3A Environmental temperature: -40~75°C Medium temperature: -40~600°C (select high-temperature model for high temperature occasions) •Time delay: l~55s (optional) •Resolution: <0.5PF •High-low level alarm: the site can be set as high level alarm method or low level alarm method •Temperature influence: 0.15pF/30°C •Stability: O.lpF/6 months (max shift) •Spark protection: built-in spark protection circuit •Sensor installation: NPT screw thread or flange installation (specifications are optional) •Inserting length: standard 450mm(inserting length IL)- 250mm(shield length CSL) Can also be customized based on requirements of users, max 6m and min 0.1m •Electrical interface: M20*1.5 •Split cable: standard length is 5 meters, 20 meters at maximum (only for split model) •Repeatability: •Response time: <0.5S
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