Level Switch
Model L-8

Adjustable Level Switch for Specific Gravity

SPECIFIC GRAVITY COMPENSATING.

Featuring continuously adjustable float buoyancy control to allow use in fluids with specific gravity down to 0.6.

Continuous buoyancy control allows switch activation at oil/water interface.

May be used in hazardous areas when used with intrinsically safe relays.

Consult factory for other dual-component fluid interface systems.

Horizontal Mounting Only

Water/Oil Interface switch point

Foam/Fluid interface switch point

High/Low Liquid Level Alarm

Liquid level indication

Direct pump control

Solenoid Valve On/Off Control

Available with Optional Filter Boot For Use in Highly Particle Contaminated Liquids.

Super-simple maintenance and checkout for personnel using a standard test meter.

Working Fluid Specific Gravity

Adjustable between 0.6 & 1.5+

Working Temp

200˚F (93˚C) Maximum

Working Pressure

75 psi (517 kPa)

Process Connection

1″ NPT

Electrical Switch

SPDT (single pole double throw) 15A or Dry Circuit

Enclosure

NEMA 6P / IP 67

Uses

For use in particle contaminated fluids, such as:

  • Medium Slurries
  • Contaminated Ground Water
  • Sewage
  • Machine Cutting Oils
  • Waste Water

Water Level Control in:

  • Cooling Towers
  • Plating Tanks
  • Washing Tanks
  • Reverse Osmosis
  • Fish Farms
  • Fountains & Pools
  • Aquariums

Models

L-8N (NORYL®)
WORKING PRESSURE: 250 psi max. continuous
WORKING TEMPERATURE: 180˚F max. continuous.
WETTED MATERIALS: Body, Float and Bushing: Noryl® (PPO) (10% glass fibers) screws + shaft: 316 stainless steel or Teflon®
L-8CR (FORTRON®)
WORKING PRESSURE: 250 psi max. continuous
WORKING TEMPERATURE: 200˚F max. continuous.
WETTED MATERIALS: Body, Float and Bushing: Fortron® (PPS) (40% glass fibers) screws + shaft: HASTELLOY® C

L-8
Group

L-8CR

L-8CR/BOOT

L-8N

L-8N/BOOT

Specs

HYSTERESIS (Δ LIQUID LEVEL TO ACTIVATE/DEACTIVATE SWITCH)
≈ ¼” max. travel

WORKING FLUID SPECIFIC GRAVITY RANGE
Adjustable between 0.6 and 1.5+

WORKING PRESSURE:
75 psi max. continuous & 100 psi max. non-operating

ELECTRICAL SWITCH CHARACTERISTICS
SPDT (single pole double throw) 15 A, ½ hp @ 125 or 250VAC ½A @ 125VDC, ¼A @ 250VDC 5A @ 125VAC (Tungsten lamp load) 10,000,000 operations median

Gold Cross Bar Dry Circuit Computer/PLC Interface SPDT Switch Model also available. 0.1A or less, 5–24 VAC/DC.

Diagram

diagram_l-8