Hansen LB3-115, Vari-level Control 115 Volt 3-Relay

The Hansen Vari-Level provides excellent level control and monitoring flexibility for industrial and large commercial refrigeration systems. It takes the place of multiple single point level switches on new or existing refrigerant vessels. This popular and field-proven system consists of a control unit, probe and level column. Level set points and differentials can be easily set up, and then simply changed by moving knobs when necessary. A built-in level simulator enables the operator to easily check proper operation of control valves, pumps, and alarms at the various set levels.APPLICATIONSWhile primarily designed for Ammonia, R22, R134a,and other approved refrigerants, this control is alsosuitable for other approved liquids. The standardthree point Vari-Level® control unit, catalog numberLB3, is ideal for the control of the operating level,high level alarm/compressor cutout, and the lowlevel alarm/pump cutout in liquid refrigerantaccumulators and separators. The single point andtwo point control units, catalog numbers LB1 andLB2 respectively, are suitable for operating level orlow level control where an adjustable level with relayoutput and digital display is important. The five pointcontrol unit, catalog number LB5, is uniquely usefulon larger systems where dual liquid feed solenoidand expansion valves give smoother control; byutilizing two control level relays from the LB5, it ispossible to avoid a single, large liquid feed (especially1½" and larger) which can exhibit “water hammer”when the solenoid valve opens or closes.Key Features:Adjustable levels and differentialsBright digital display of level percentageUser friendlyLevel Set Points always visibleAccurately factory calibrated"Anti-Splash" dampening feature1 to 5 SPDT fused relay outputsBuilt-in level simulatorVariable cable length to probeVarious probe lengths, including customMatching levelcolumns availableOptional 4-20 mA outputSuitable for Ammonia, R22, R134a and other approved refrigerantsMany hundred successfully in useCSA/US Certified