Text version of the page

NIAGARA Nutating Disc Liquid Level

LSS-1000 LIQUID LEVEL FLOAT SWITCH

Principle of Operation A magnet inside each float activates a reed switch which is hermetically sealed inside the sensingtube.One to five switch levels are available. T ec hnical Inf ormation Functional Specifications

Accuracy+ ¼”Liquid Specific Gravity0.7 or greater Maximum Pressure150 psig Switch Levels1 to 5 Reed SwitchForm A Dry ContactResistive:100 Watts, 3.0 Amp max, 400 VDC max, SPSTTemperature- 14° F to 212° F (- 25° C to 100° C)

Physical Specifications

Switch Spacing2.5”below top fitting / 2.5”above bottom of tank 3”minimum between each switchSwitch NumberingSwitch One is the bottom switch Switch ContactNormally Open (NO) or Normally Closed (NC) Materials of ConstructionTubeBrass or 316 SSFloats316 SS Float StopsPlated Steel or 316 SSTank FittingCast Iron or 316 SSJunction Box (opt.)Explosion Proof and NEMA 4 Junction Box ApprovalsClass 1, Groups C and D, Class II, Groups E,F, and G,Class III Wiring18 AWG ConnectionsType A:½”MNPTType B:2”MNPT tank fitting with ½”MNPT wiring connection Type C:Same as type B with 90 degree Ex.Proof junction box Type D:Same as type B with straight through Ex.Proof junction box Lead LengthsType A and B are 4 inchesType C and D are 9 inches

Dimensions Or dering Inf ormation

Mounting Connection A. . . 1/2”NPT wiring connection B. . . 1/2”NPT wiring connection, 2”NPT tank fitting C. . . 1/2”NPT wiring connection, 2”NPT tank fitting, 90 Part Number LSS-1000 ___ - ___ - ___ - ___ Construction Check either normally open or normally closed switch contacts.Indicate the distance in inches from the top of the tank fitting or standpipe to the switch activation point. Note:Switch 1 is the bottom switch Note:Allow 2.5”spacing below top fitting,2.5”spacing above bottom of tank, and 3”minimum spacing between each switch point. Number of Switches BR. . Brass SS. . 316 Stainless Steel

*2.5”*3” *3” *3” *3” *2.5”

SWITCH 5SWITCH 4SWITCH 3 SWITCH 2 SWITCH 1
O

explosion proof junction boxD. . . 1/2”NPT wiring connection, 2”NPT tank fitting, 180

O

explosion proof junction box Probe Length Range S. . . 2 1/2”to 12” M. . . 13”to 70” L. . . 71”to 120”Note:The probe length is determined by the bottom switch plus 2 1/2”

*Absolute minimum spacing 1 Venture Measurement â–ª 150 Venture Boulevard â–ª Spartanburg, SC 29306 â–ª 864.574.3327 â–ª 1.800.778.9251 â–ª Fax:864.574.8063 â–ª www.aaliant.com â–ª sales@aaliant.com