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Model LS7000/2 Dual-Point Level Switch

LS6000 and LS7000 Level Switches The LS7000/2 dual-point RF level switch uses the proprietary radio frequency (RF) balanced impedence bridge. It is specifically designed to automatically fill or empty a tank, vessel or sump. The high and low set points are adjustable over the entire length of the probe. This unit works best in homogeneous liquids.

The dual-point level switch uses a single relay and an on-board latching circuit for automatic operation. No external latching relays or holding contacts are required Simply wire the relay output in series with the pump starter. To automatically fill a vessel, select "AUTO-FILL" on the electronics, and the relay will energize when the material is below the "LOW" set point. The pump will turn on and continue to run until the level reaches the "HIGH" set point, then shut off. For "AUTO-EMPTY", the relay action is reversed.

*For electrically conductive materials, a Halar coated probe is required.
LS7000 Dimensions

Calibration
All the necessary calibration indicators are on-board so all you need to calibrate the LS7000/2 is a small screwdriver. The modular electronics make trouble shooting and repair a snap. The entire unit is backed by our two year warranty.

Construction
The probe is made of solid 316 stainless steel rod and the insulator is made of Teflon. A Halar coating on the probe is required in all electrically conductive liquids. The seals are made with Viton Fluoroelastomer "O" rings. All the electronics are housed in a cast aluminum explosion-proof enclosure.

Manual Order Online
Specifications
Power: 120VAC (+/- 15%) 50/60Hz, 2 watts, standard. 230VAC, 12VDC and 24VDC are optional.
Output: 2 Form C contacts, DPDT relay, 5Amp resistive at 125VAC, 230VAC; 30VDC.
On-Board Fuse 0.5 Amp
Operation: Selectable AUTO-FILL or AUTO-EMPTY.
RF Frequency: Approximately 1.3 MHz.
Vessel Entry: 1" NPT
Conduit Entry: 1" NPT
Hazardous Area: Class I, Group C, D. Class II, Group E,F,G.
Temperature: Probe: -30 deg F to +450 deg F
Electronics: -40 deg F to 385 deg F
Note - High temperature ratings are available, contact the factory with your application data.
Pressure: 1500 psi @ 75 deg F.
Note - High pressure ratings are available, contact the factory with your application data.
Construction: Probe: All wetted parts 316SS, Teflon and Viton.
Electronics: Housed in cast aluminum explosion-proof enclosure.
Specifications are subject to change without notice.
APPLICATION NOTES
The LS7000/2 is designed to automatically fill or automatically empty a vessel. LS7000/2 has only one relay, and this relay is dedicated to the auto fill or auto empty application. It will not give two discrete outputs as is needed to drive two indicating lights.
LS7000/2 is designed to work in homogeneous liquids. Liquids that change in conductivity or processes where various materials are be in the vessel at different times are undesirable applications, unless two probes are utilized.
LS7000/2 must have a halar coated probe when used in electrically conductive liquids. Water and water based liquids are electrically conductive.
LS7000/2 Must be grounded to the liquid for optimum repeatability.  If the unit is inserted through a threaded fitting at the top of a metal tank, the unit will be properly grounded. In non-metallic tanks such as fiberglass or poly, special grounding provisions may be necessary to ensure repeatability.
Material adhering to the probe will effect setpoint repeatability.  If this is a problem, utilize two single point switches. 
Critical Filling Applications require the use of a separate independent high level switch for interlock, alarm and or shutdown. Always best to add the safety interlock to protect your equipment and personnel with a fail safe high fill valve closure and pump control, sound an audible and visual alarm to alert plant operators. 
Part #

Description

LS7000/2115ACS10 Level Switch LS7000/2, 115VAC, 10" 316SS Probe
LS7000/2115ACH10 Level Switch LS7000/2, 115VAC, 10" Halar Probe
  12VDC, 24VDC, and 240VAC Option
EXTENDED PROBES 
1/2" Diameter 316SS,Halar Coated Probes
  (Standard lengths available: 10", 18" & 24")
SPARE PARTS 
LS7000PS115VAC Power Supply LS7000, 115VAC
LS7000PS240VAC Power Supply LS7000, 240VAC
LS7000PS12VDC Power Supply LS7000, 12VDC
LS7000PS24VDC Power Supply LS7000, 24VDC
LS7000/2DPSC Sensing Card LS7000/2 Dual Point
LS7000SPROBE10 Probe Assembly LS7000 10" 316SS
LS7000HPROBE10 Probe Assembly LS7000 10" Halar Coated
LS7000HOUSING Housing LS7000, CL1, Gp C, D, CL II, Gp E, F, G, CL III
LS7000FUSE Fuse LS7000, 1/2 AMP
Ordering Information

 
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