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Free 1 Year Warranty Extension
Qualifying Product
Based on our enhanced quality and customer satisfaction, Flowline now offers a free optional 1-year warranty extension on its non-contact ultrasonic level products that increases the warranty period on such products for a period, which is equal to the shorter of two years from the date of purchase or three years from the date of manufacture. To receive the extended warranty, the original purchaser must register their qualifying product within thirty (30) days of purchase by providing their valid part number, serial number, name, company and email address. An extended warranty registration receipt will be emailed to you for reference at the time of claim. Please refer to the below list of qualifying products.
Browse the Products
EchoSwitch® II, Bulk Tank Ultrasonic Switch, Non-Contact Multi-Point Level Controller
Application
The general purpose ultrasonic switch and controller provides non-contact level detection up to 24.6' (7.5 m) with 3 SPDT 60 VA 1A relays. EchoSwitch II features an LCD display with digital push button configuration. Each relay can be configured on a single set point alarm or latched on two set points for automatic fill or empty in simplex, duplex or triplex control modes with integral timer delay. The switch is well suited for a broad range of corrosive, waste and slurry type media. EchoSwitch II is broadly selected for atmospheric day tank, pump lift station and sump applications.

Automation
The integral three channel controller has powerful automation features including advanced pump and alarm control logic designed for day tank, process vessel and waste sump applications. From alarms to automatic fill or empty, pump duplexing and run dry protection, EchoSwitch II does it all. It's level made simple.
Features
Non-contact level detection with integral 3-channel relay control
LCD display with simple digital push button configuration
Pump simplex, duplex and triplex control modes
Integrated timer for pump/valve delay and pump alternation
Available in 2.5m (8.2') or 7.5m (24.6') range
10cm miniature dead band optimizes the filling capacity of small sumps or vessels
Corrosion resistant polycarbonate enclosure with PVDF transducer
Configuration
EchoSwitch II can be configured before installation. The switch features a non-volatile memory preventing set points from being lost even when the switch is powered down. Configuration is simple using the three push buttons (Up, Down and Select) and built-in LCD display. All you need to configure the switch is tank height, maximum fill height and the measured distances from the bottom of the tank to each set point. The EchoSwitch II configuration accepts several units of measure including inches, centimeters, feet or meters.
Specifications
Range:
LU77: 4" to 8.2' (10 cm to 2.5 m)
LU78: 8" to 24.6' (20 cm to 7.5 m)
Repeatability:
0.25" (6.35 mm)
Effective beam width:
3" (7.6 cm) dia.
Dead band:
LU77: 4" (10 cm)
LU78: 8" (20 cm)
LCD indication:
Level and relay status
Configuration:
Push button
Supply voltage:
95-250 VAC
Contact type:
(3) SPDT relays
Contact rating:
60 VA, 1A max.
Contact fail-safety:
Programmable/selectable
Temp. comp.:
Automatic
Electronics temp:
F: -4° to 140°
C: -20° to 60°
Pressure:
MWP = 30 psi
Enclosure rating:
NEMA 4X (IP65)
Enclosure vent:
Water tight membrane
Encl. material:
Polycarbonate, UV
Encl. hardware:
Brass and stainless
Trans. material:
PVDF
Process mount:
LU77: 1" NPT (1" G)
LU78: 2" NPT (2" G)
Mount gasket:
Viton®
Conduit entrance:
Dual, 1/2" NPT
Classification:
General purpose
Compliance:
RoHS
Approvals:
CE (Pending)
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