EchoSwitch II
Manual – MN300650
09 JULY 08
Revision A
09 JUL 08 EchoSwitch II 1 of 33
Rev A MN300650
Flowline Inc.
10500 Humbolt Street
Los Alamitos, CA 90720
Tel: (562) 598-3015
Fax: (562) 431-8507
www.flowline.com
2 of 33 EchoSwitch II 09 JUL 08
MN300650 Rev A
Preface
This manual explains how to use the EchoSwitch II, LU77 and LU78 series controller.
Warranty, Service & Repair
To register your product with the manufacturer, go to the Flowline website for on-line
registration. The website address is as follows:
www.flowline.com
On-line Warranty Registration can be found under Contact Us in the Navigation Bar along the
side of the home page.
If for some reason your product must be returned for factory service, go to the Flowline website
to receive a Material Return Authorization number (MRA), providing the following information:
1. Full Part Number, Full Serial Number
2. Name and telephone number of someone who can answer technical questions related
to the product and its application.
3. Return Shipping Address
4. Brief Description of the Symptom
5. Brief Description of the Application
On-line Material Return Authorization can be found under Contact Us in the Navigation Bar
along the side of the home page. Click on Return Authorization to begin the MRA request.
Once you have received a MRA number, ship the product prepaid in its original packing to:
Flowline Factory Service
MRA_____
10500 Humbolt Street
Los Alamitos, CA 90720
To avoid delays in processing your repair, write the MRA on the shipping label. Please include
the information about the malfunction with your product. This information enables our service
technicians to process your repair order as quickly as possible.
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Warranty
Flowline warrants to the original purchaser of its products that such products will be free from
defects in material and workmanship under normal use and service for a period which is equal to
the shorter of one year from the date of purchase of such products or two years from the date of
manufacture of such products.
This warranty covers only those components of the products which hare non-moving and not
subject to normal wear. Moreover, products which are modified or altered, and electrical cables
which are cut to length during installation are not covered by this warranty.
Flowline’s obligation under this warranty is solely and exclusively limited to the repair or
replacement, at Flowline’s option, of the products (or components thereof) which Flowline’s
examination proves to its satisfaction to be defective. FLOWLINE SHALL HAVE NO
OBLIGATION FOR CONSEQUENTIAL DAMAGES TO PERSONAL OR REAL
PROPERTY, OR FOR INJURY TO ANY PERSON.
This warranty does not apply to products which have been subject to electrical or chemical
damage due to improper use, accident, negligence, abuse or misuse. Abuse shall be assumed
when indicated by electrical damage to relays, reed switches or other components. The warranty
does not apply to products which are damaged during shipment back to Flowline’s factory or
designated service center or are returned without the original casing on the products. Moreover,
this warranty becomes immediately null and void if anyone other than service personnel
authorized by Flowline attempts to repair the defective products.
Products which are thought to be defective must be shipped prepaid and insured to Flowline’s
factory or a designated service center (the identity and address of which will be provided upon
request) within 30 days of the discovery of the defect. Such defective products must be
accompanied by proof of the date of purchase.
Flowline further reserves the right to unilaterally waive this warranty and to dispose of any
product returned to Flowline where:
a. There is evidence of a potentially hazardous material present with product.
b. The product has remained unclaimed at Flowline for longer than 30 days after dutifully
requesting disposition of the product.
THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON
THE FACE OF THIS WARRANTY. This warranty and the obligations and liabilities of
Flowline under it are exclusive and instead of, and the original purchaser hereby waives, all other
remedies, warranties, guarantees or liabilities, express or implied. EXCLUDED FROM THIS
WARRANTY IS THE IMPLIED WARRANTY OF FITNESS OF THE PRODUCTS FOR A
PARTICULAR PURPOSE OR USE AND THE IMPLIED WARRANTY OF
MERCHANTABILITY OF THE PRODUCTS.
This warranty may not be extended, altered or varied except by a written instrument signed by a
duly-authorized officer of Flowline, Inc.
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Introduction:
The EchoSwitch II is a general-purpose ultrasonic level switch that provides the end user the
ability to control up to three unique devices (pump, valves and/or alarms) through an advanced
non-contact technology. EchoSwitch II features push button configuration that uses real
engineering values for setting up the relay operation(s). Each relay is a SPDT Form “C” contact
rated at 60 VA, 1A max and can be sued as an alarm set point (1 level for ON and Hysteresis) or
as pump or valve set points (1 level for ON and a separate level for OFF).
New Features
• Simple digital push button configuration, no more target calibration.
• Pump simplex, duplex and triplex option.
• Integrated timer for pump / valve delay and pump alternation.
• Available in a 2.5m (8.2’) or 7.5m (24.6’) maximum range.
Table of Contents
Introduction ............................................................................................................................5
About this manual ......................................................................................................................6
Specifications ............................................................................................................................8
Dimensions ............................................................................................................................8
Getting Started ...........................................................................................................................9
Getting Around ............................................................................................................10
Feature Guide ...............................................................................................................13
How to enter the MENU ..............................................................................................14
How to configure Units ................................................................................................14
How to configure the operational range .......................................................................15
How to set a HIGH Alarm ...........................................................................................16
How to set a LOW Alarm ............................................................................................17
How to FILL with a Pump ...........................................................................................18
How to EMPTY with a Pump ......................................................................................19
How to FILL with a Valve ...........................................................................................20
How to EMPTY with a Valve ......................................................................................21
How to Duplex .............................................................................................................22
How to Triplex .............................................................................................................22
How to Turn OFF M-PLEX .........................................................................................23
How to TIME Alternate ...............................................................................................22
Electrical ..........................................................................................................................25
Input Power ..................................................................................................................25
Relay Connection .........................................................................................................25
Installation ..........................................................................................................................27
Fitting Selection ...........................................................................................................27
Appendix ..........................................................................................................................31
SETUP .........................................................................................................................31
Reset ..........................................................................................................................31
Simulation Mode ..........................................................................................................32
Test parameters ............................................................................................................32
Troubleshooting ...........................................................................................................33
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About this Manual: PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR
USING THIS PRODUCT. This manual includes information on the EchoSwitch II series
Ultrasonic Level Switch from FLOWLINE. Please refer to the part number located on the switch
label to verify the exact model configuration, which you have purchased.
User’s Responsibility for Safety: FLOWLINE manufactures a broad range of level sensing
technologies. While each of these sensors is designed to operate in a wide variety of applications,
it is the user’s responsibility to select a sensor model that is appropriate for the application,
install it properly, perform tests of the installed system, and maintain all components. The failure
to do so could result in property damage or serious injury.
Proper Installation and Handling: Only properly trained staff should install and/or repair this
product. Install the switch with the included Viton gasket and never over tighten the switch
within the fitting. Always check for leaks prior to system start-up.
Wiring and Electrical: A supply voltage of 95-250 VAC is used to power the EchoSwitch II.
Electrical wiring of the switch should be performed in accordance with all applicable national,
state, and local codes.
Material Compatibility: The enclosure is made of Polycarbonate (PC). The transducer is made
of Polyvinylidene Fluoride (PVDF). Make sure that the model, which you have selected, is
chemically compatible with the application media.
Enclosure: While the switch housing is liquid-resistant the EchoSwitch II is not designed to be
operational when immersed. It should be mounted in such a way that the enclosure and
transducer do not come into contact with the application media under normal operational
conditions.
The enclosure has a flip cover with dual 1/2” NPT female conduit ports and an internal terminal
strip for wiring. To open the enclosure, you will need a small insertion tool such as a
screwdriver. Loosen the locking screw located at the top front of the enclosure. Rotate the
hinged cover up for 135° access to the faceplate and terminal strips. Before closing the
enclosure, make sure that the enclosure gasket is properly seated, and that any conduit fittings,
cable connectors or plugs are installed correctly and sealed.
Handling Static-Sensitive Circuits/Devices: When handling the transmitter, the technician
should follow these guidelines to reduce any possible electrostatic charge build-up on the
technician’s body and the electronic part.
1. Always touch a known good ground source before handling the part. This should be
repeated while handling the part and more frequently after sitting down from a standing
position, sliding across the seat or walking a distance.
2. Avoid touching electrical terminals of the part unless making connections.
3. DO NOT open the unit cover until it is time to calibrate.
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Make a Fail-Safe System: Design a fail-safe system that accommodates the possibility of
switch and/or power failure. FLOWLINE recommends the use of redundant backup systems and
alarms in addition to the primary system.
The switch has (3) relay channels. Each relay is a SPDT (single pole, double throw) type rated at
60 VA, 1A Max. Normally open (NO) or normally closed (NC) operation is user selected based
on the desired system control and fail-safe logic. Always design a fail-safe system that
accommodates for the possibility of relay and/or power failure. The "normal" relay state is
where the relay coil is de-energized and the Red relay LED is OFF. Therefore, if power is cut
OFF to the switch it will de-energize the relay. Make sure that the de-energized state is the safe
state in your system design. As such, if switch power is lost, a pump will turn OFF if it is
connected to the normally open side of the relay.
Flammable, Explosive or Hazardous Applications: EchoSwitch II should not be used within
classified hazardous environments.
Warning: Always use the Viton gasket when installing the EchoSwitch II, and make sure that all
electrical wiring of the switch is in accordance with applicable codes.
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Specifications:
Range: LU77: 4" to 8.2'
(10 cm to 2.5m)
LU78: 8" to 24.6'
(20 cm to 7.5m)
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, digital
(3)
Supply voltage: 95-250 VAC
Contact type: (3) SPDT relays
Contact rating: 60 VA, 1A max
Contact fail-safety: Programmable /
selectable
Dimensions:
Side View / LU77 Series
Temp. comp.: Automatic
Electronics temp.: F: -40° to 140°
C: -40° to 60°
Pressure: MWP = 30 PSI
Enclosure rating: NEMA 4X (IP65)
Enclosure vent: Water tight
membrane
Encl. material: Polycarbonate
Encl. hardware: Brass and stainless
Trans. material: PVDF
Process mount: 2” NPT (2” G)
Mount. gasket: Viton®
Conduit entrance: Dual, 1/2” NPT
Classification: General purpose
Compliance: RoHS
Approvals: CE
Top View / All Models
Side View / LU78 Series
Rear View / All Models
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Getting Started:
EchoSwitch II can be configured before installation. The switch features non-volatile memory,
so the set points configured before installation will not be lost when the switch is powered down.
To start, all you need is the following information:
• Basic Tank Information
o HEIGHT – Distance from the
transducer face to the bottom of the
tank.
o FILL-H – Maximum fill height of
the liquid from the bottom of the
tank.
• Set Points:
o You will need the measured
distance from the bottom of the
tank to each set point. These values
will all be in the same distance
value (inches, centimeters, feet or
meters) and will all be measured
from the bottom of the tank.
• Power:
o Provide input power to the
EchoSwitch II.
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Getting around:
EchoSwitch II is configured by the use of three push buttons (UP, DOWN and SELECT) and a
LCD display. As a lockout feature, the buttons are inactive until the SELECT button is held
down for 5 seconds, and then the display will begin to scroll through the top level of the
configuration menu.
Top Level
• The Configuration menu will continue to scroll through the items below until the SELECT
button is pressed.
• UNITS – TANK – RELAY 1 – RELAY 2 – RELAY 3 – SAFE – (MPLEX) - HELP -
RUN
• To return to the Operational mode of EchoSwitch, press SELECT while RUN appears in the
display.
• UNITS – Allows end user to select the units for configuration and operation. Select between
Inches, Centimeters, Feet, Meters or Percent. Press EXIT to return to the Top Level menu.
• TANK – Allows the end user to configure the operational range for the switch.
o HEIGHT – Distance from the transducer face to the bottom of the tank.
o FILL-H – Maximum fill height of the liquid from the bottom of the tank.
o Press Exit to return to the Top level Menu
o Note: if UNITS is set to Percent, then TANK will not appear. To view TANK, set
UNITS to any of the following: Inches, Centimeters, Feet or Meters
• RELAY 1, 2 or 3 – Allows end user to configure the function and operation of each relay.
Each relay has a small black circle that appears when the relay is energized. When the relay
is de-energized, the black circle disappears.
o PUMP – Pump operation allows for two separate level set points (Relay ON and
Relay OFF). Choose between the EMPTY or FILL operation. Both operations
require setting a level for ON and another level for OFF
EMPTY – used to control a pump that empties a tank.
Typically, Relay ON is the HIGH set point and Relay OFF the LOW set point.
Relay will energize at the high set point (ON) and remain on until the level
reaches the low set point (OFF) and will remain off until the level returns to
the high set point (ON).
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