Kotron_822.832.842型射频点控液位开关.pdfVIP

Kotron® Sentinel Models 822, 832 and 842 RF Point Level Switches D E S C R I P T I O N The Sentinel is a powerful multi-point level switch. The microprocessor-based circuitry has non-volatile memory, to protect against data loss. Powerful diagnostics check all major aspects of the system while MagneCal™ offers the user the advantage that one small level change is needed to calibrate. F E A T U R E S • Optional intrinsically safe probe circuitry (with on- board barriers) allows safe use, even with bare probes in hazardous media. • Intrinsically safe remote mount models up to 800 feet (240 meters) of cable. • Integral or standard remote mount up to 2500 feet (760 meters) for application flexibility. • Two to four DPDT relays yield wide application flexibility for most alarm and control operation. • Relays 2 and 3, Series 832/842 models, may be used for lead/lag pump sequencing. • Time delay eliminates relay chatter due to turbulence. A P P L I C A T I O N S • Usable with all Kotron probes for excellent application • Hydrocarbons and solvents flexibility. • Corrosives • 3-button/4-digit LED data entry of all parameters. • High temperature/pressure liquids • One small level change (2% of span) needed for initial calibration in most cases. • Multi-point alarm/control • Powerful self-diagnostics check the system, minimizing • Pump control the need for routine maintenance checks.