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FlowLine EchoSwitch LU74 Series, Manual

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FlowLine EchoSwitch LU74 Series Manual Download Page 24

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 24

 

 

MN300262 Rev B

 

Installation

 

Step Eight 

  

 

The EchoSwitch® should always be mounted perpendicular to the liquid surface and installed using the 
provided Viton® mounting gasket.  Make sure that the fitting and transmitter threads are not damaged or worn.  
Always 

hand-tighten

 the transmitter within the fitting.  Perform an installed leak test under normal process 

conditions prior to system start up.  

Note: The preferred mounting fitting for the LU77 Series is the LM52-1400 

(2” thread x 1” thread) reducer bushing. 

MOUNTING GUIDE 

1.  Do not mount at an angle. 
2.  Liquid should never enter the dead band. 
3. Side 

Wall: 

a.  Mount at least 3” from the side wall. 
b.  For LU77 Series - mount at least 2” from the side 

wall. 

4.  Do not mount where obstacles will intrude into sensor’s 

beam width. 

a.  Beam Width: 3” (7.6cm) diameter [2” (5cm) for 

LU77 series]. 

5.  Do not mount in a vacuum. 
6.  Avoid mounting in the center of a dome top tank. 
7.  In cone bottom tank, position the sensor over the 

deepest part of the tank. 

INSTALLATION IN EXISTING FITTINGS:   

If the existing fitting is larger than the threads of the 
EchoSwitch®, select a reducer bushing such as the LM52-
1400 (2” thread x 1” thread) or LM52-2400 (3” thread x 2” 
thread). 

 

LM52-1400 

 

LM52-2400 

Do not install at 

angle relative to the 

liquid. 

Do not install within 

2” of tank sidewall. 

(3” for DL34 series) 

Do not install with 

objects in the 

beam. 

Do not install in 

applications with 

vacuum. 

 

 

Metal Tanks (LU77 Series Only):  

Flowline ultrasonic sensors have been optimized for use in non-metallic 

fittings.   

1.  For best performance, avoid the use of metallic fittings. 

a.  Use a plastic 2” x 1” reducer bushing, such as the LM52-1400 or a plastic 1” flange, such as the 

LM52-1850 for metallic tanks. 

2.  While installations directly into a 1” metal fitting are not recommended, acceptable results may be 

obtained if the 1” fitting is a half coupling in form and the outer diameter of the coupling is tightly 
wrapped in vinyl tape to dampen vibration. 

 

 

Summary of Contents for EchoSwitch LU74 Series

Page 1: ...ne Inc 10500 Humbolt Street Los Alamitos CA 90720 p 562 598 3015 f 562 431 8507 w flowline com MN300262 Rev B EchoSwitch Ultrasonic Level Switch and Transmitter LU74 LU77 LU78 Series Manual NEMA 4X Enclosure ...

Page 2: ...vailable in a 3m 9 8 5 5m 18 0 or 8m 26 2 maximum range Isolated 4 20 mA loop output for indicating level AC powered TABLE OF CONTENTS Specifications 4 Dimensions 4 Safety Precautions 5 Components 6 Getting Started 7 Getting Around the TOP LEVEL MENU 7 TOP LEVEL MENU 7 Configuration 8 How to Enter Exit the TOP LEVEL MENU 8 How to Configure UNITS 8 How to Configure the Operational Range of EchoSwit...

Page 3: ...ttings 24 Fitting Selection 25 Tank Adapter 25 Riser 25 Flange 26 Side Mount Bracket 26 Stand Pipe 27 Appendix 28 TOP LEVEL MENU descriptions 28 Units 28 Tank 28 Relay 1 Relay 2 or Relay 3 28 Safe 30 M Plex 30 Help 30 Run 31 Setup 31 Reset 31 Simulation SIM T 33 Test Parameters 33 Troubleshooting 34 User Settings 35 Warranty 36 ...

Page 4: ... SPDT relays Relay 2 and 3 SPST N O All commons connected together Contact rating 2A 30 VDC 60 W DC 125 VA 220 VDC 250 VAC Contact fail safety Programmable selectable 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 Proce...

Page 5: ... 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 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 operation...

Page 6: ...the instrument The normal relay state is where the relay coil is de energized and the relay indicator 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 Hazar...

Page 7: ...d will all be measured from the bottom of the tank Power o Provide input power to the EchoSwitch Note The Height and Fill Height settings also determine the 4 to 20 mA current span The Height setting determines the 4mA position and the Fill H setting determines the 20 mA position GETTING AROUND THE TOP LEVEL MENU EchoSwitch is configured by the use of three push buttons UP DOWN and SELECT and a LC...

Page 8: ...ave typically have two set points the level where the pump turns on and where it turns off or the level where the valve opens and closes HOW TO ENTER THE TOP LEVEL MENU 1 Press and hold SELECT approximately 5 seconds until PROG is displayed 2 The TOP LEVEL MENU items will rotate through display 3 Use SELECT to choose a MENU item HOW TO EXIT THE TOP LEVEL MENU In TOP LEVEL MENU press SELECT when RU...

Page 9: ... to the bottom of the tank 4 To enter the value press and hold SELECT for 2 seconds and release SAVED will display 5 When FILL H appears press SELECT 6 Using the UP and DOWN buttons set the Fill Height FILL H of the tank max level of liquid to the bottom of the tank 7 To enter the value press and hold SELECT for 2 seconds and release SAVED will display 8 Select EXIT to return to TOP LEVEL MENU Not...

Page 10: ...2 seconds and release SAVED will display 6 Select HYSTER to set the Hysteresis a Hysteresis is the distance away from the original ON setting where the Alarm will turn OFF 7 Using the UP and DOWN buttons set the HYSTER OFF set point for the relay 8 To enter the value press and hold SELECT for 2 seconds and release SAVED will display 9 Select EXIT to return to TOP LEVEL MENU Note The hysteresis HYS...

Page 11: ...econds and release SAVED will display 6 Select HYSTER to set the Hysteresis a Hysteresis is the distance away from the original ON setting where the Alarm will turn OFF 7 Using the UP and DOWN buttons set the HYSTER OFF set point for the relay 8 To enter the value press and hold SELECT for 2 seconds and release SAVED will display 9 Select EXIT to return to TOP LEVEL MENU Note The hysteresis HYSTER...

Page 12: ...ld SELECT for 2 seconds and release SAVED will display 7 Select OFF 8 Using the UP and DOWN buttons set the OFF set point for the relay 9 To enter the value press and hold SELECT for 2 seconds and release SAVED will display Note If you want to add a delay when the PUMP starts continue on to step 10 If no delay is required jump to step 13 10 Select DELAY 11 Using the UP and DOWN buttons set the DEL...

Page 13: ...old SELECT for 2 seconds and release SAVED will display 7 Select OFF 8 Using the UP and DOWN buttons set the OFF set point for the relay 9 To enter the value press and hold SELECT for 2 seconds and release SAVED will display Note If you want to add a delay when the PUMP starts continue on to step 10 If no delay is required jump to step 13 10 Select DELAY 11 Using the UP and DOWN buttons set the DE...

Page 14: ...hold SELECT for 2 seconds and release SAVED will display 7 Select OFF 8 Using the UP and DOWN buttons set the OFF set point for the relay 9 To enter the value press and hold SELECT for 2 seconds and release SAVED will display Note If you want to add a delay when the VALVE starts continue on to step 10 If no delay is required jump to step 13 10 Select DELAY 11 Using the UP and DOWN buttons set the ...

Page 15: ... hold SELECT for 2 seconds and release SAVED will display 7 Select OFF 8 Using the UP and DOWN buttons set the OFF set point for the relay 9 To enter the value press and hold SELECT for 2 seconds and release SAVED will display Note If you want to add a delay when the VALVE starts continue on to step 10 If no delay is required jump to step 13 10 Select DELAY 11 Using the UP and DOWN buttons set the...

Page 16: ...y the relays will return to the normal state Thus in Relay 1 NC terminal will be closed and NO terminal will be open Also the NO terminals in relays 2 and 3 will also be open Make sure that the de energized state is the safe state in your system design The EchoSwitch does use non volatile memory so any power loss will not affect the settings or configuration of the sensor HOW TO SELECT FAIL SAFE C...

Page 17: ...elays with the same ON level will have cause both relays to turn on at the same time Once this is completed see the steps below Example below shows two relays A and B used to Auto Empty a tank 1 Make sure at least two relays are in the same mode for pumps a If this is not true then M PLEX will not appear 2 In TOP LEVEL MENU mode select M PLEX 3 Select DUPLEX a If three relays are configured in the...

Page 18: ...vel Setting the relays with the same ON level will have cause both relays to turn on at the same time The Backup level must be set to a level out of range level will never reach this setting Once this is completed see the steps below Example below shows two relays A and B used to Auto Empty a tank 1 Make sure at least two relays are in the same mode for pumps a If this is not true then M PLEX will...

Page 19: ...t ON Set Point one for Primary one for Backup and the other for Backup 2 Setting all three relays with the same ON level will cause the relays to all turn on at the same time Example below shows three relays A B and C used to Auto Empty a tank 1 Make sure all three relays are in the same mode If this is not true then TRIPLX will not appear 2 In TOP LEVEL MENU mode select M PLEX 3 Select TRIPLX 4 S...

Page 20: ...n be set up on a timer Thus the lead and lag pumps will be switched based on time rather than a cycle basis 1 Make sure at least two relays are in the same mode a Example two relays are set as PUMPs that FILL or three relays are set as PUMPs that EMPTY b If this condition is not met M PLEX will not appear 2 In TOP LEVEL MENU mode select M PLEX 3 Select DUPLEX or TRIPLX 4 Select A TIME 5 Select HOU...

Page 21: ...er is lost to the EchoSwitch The switching of heavy inductive loads such as pump motors can create voltage spikes in the many thousands of volts It is recommended that the power to the EchoSwitch and to the coils of the isolation relays be sourced from a main that is not switching inductive loads as shown below Note 1 Isolate power to instrument from power to load pumps etc as much as possible by ...

Page 22: ...t and to sense the current flow out of the MA output with a sampling resistor as shown in the following diagram The cabling should be a shielded twisted pair to minimize EMI interference Typically 20 to 24 gauge wire is used in this application The analog output of the EchoSwitch is isolated from the AC power via optocoupler isolation Note 95 to 250 VAC power is required to provide power to the Ec...

Page 23: ...line Displays Controllers DataView LI55 Series Level Controller DataLoop LI25 Series Level Indicator without the backlight DataLoop LI25 Series Level Indicator with the backlight DataPoint LC52 Series Level Controller JWA mode Factory Setting DataPoint LC52 Series Level Controller JWB mode Commander LI90 Series Multi Tank Level Controller ...

Page 24: ...in the center of a dome top tank 7 In cone bottom tank position the sensor over the deepest part of the tank INSTALLATION IN EXISTING FITTINGS If the existing fitting is larger than the threads of the EchoSwitch select a reducer bushing such as the LM52 1400 2 thread x 1 thread or LM52 2400 3 thread x 2 thread LM52 1400 LM52 2400 Do not install at angle relative to the liquid Do not install within...

Page 25: ... Adapter Socket x Thread Tank Adapter w 2 x 1 Reducer Bushing Tank Adapter Thread x Thread Do not use thread x thread 2 RISER Installations with tall narrow risers can impede the acoustic signal a Core Out Concrete Applications where tank a concrete tank ceiling that has been cored out can also be considered as a riser type application In these applications a 2 1 ratio Inner Diameter to Core Heigh...

Page 26: ...ane of the flange such as the Banjo 1 Poly ANSI Flange series AF100 c Use a flange with a 2 thread and add a 2 to 1 reducer bushing to complete the installation 2 Flange w thread out of plane 2 Flange w thread in plane 2 Flange w Reducer Bushing Do not use thread in plane 4 SIDE MOUNT BRACKET For installations in open tanks and sumps use the LM50 series side mount bracket a For the LU77 series ord...

Page 27: ... T x 1 T fitting or the LM52 1410 2 S x 1 T fitting d The pipe length should run the measurement span and the bottom of the pipe should remain submerged at all times to prevent foam from entering the pipe e Cut a 45 notch at the bottom of the pipe and drill a 1 4 pressure equalization hole within the dead band of the sensor f The pumps should not drive liquid past the open end of the stand pipe wh...

Page 28: ... 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 RELAY 2 or RELAY 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 disa...

Page 29: ...MPTY or FILL operation Both operations require setting a level for ON and another level for OFF EMPTY used to control a valve 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 FILL us...

Page 30: ...n a fail safe condition occurs o OFF De energizes the relay when a fail safe condition occurs o HOLD Keeps the relay in its current state when a fail safe condition occurs o OUTPUT Sets the 4 20 mA output state when the echo is lost The options are 4mA 21mA and hold last value M PLEX when two or three relays are configured as pumps they can be inter connected to alternate between each cycle o M PL...

Page 31: ...RELAY2 RELAY3 b Each relay will list the following settings i Relay Function On Setting Off Setting Safe Setting and Delay 4 Select EXIT to return to TOP LEVEL MENU RESET Reset enables the entire sensor or specific relays to be reset to factory settings 1 In TOP LEVEL MENU select HELP 2 Select RESET 3 Select R ALL RST 1 RST 2 or RST 3 a R All Resets the entire EchoSwitch b RST R1 Resets only the s...

Page 32: ...de 1 In TOP LEVEL MENU select HELP 2 Select SIM T 3 The display will start at 0 0 a Press and hold the UP button to begin increasing the level of liquid b Use the DOWN button to simulate the lowering of liquid in the tank c To increase speed hold the SELECT button while hold the UP or DOWN keys 4 Test the functionality of the relays confirming their ON and OFF levels 5 To exit press and hold the S...

Page 33: ...ng making sure the HEIGHT setting is low enough so the level of liquid is above the HEIGHT setting Pumps or Valves do not alternate 1 M PLEX is set for NO ALT or A TIME is set above 0 a If M PLEX is set for NO ALT then the relays will not alternate Change M PLEX to either DUPLEX or TRIPLX to begin alternation b If A TIME is set for anything above 0 hours then the pumps will only alternate after th...

Page 34: ...ump Valve Alarm Fill Empty Fill Empty High Low ON ON ON OFF OFF Hysteresis Delay Delay Relay 2 Pump Valve Alarm Fill Empty Fill Empty High Low ON ON ON OFF OFF Hysteresis Delay Delay Relay 3 Pump Valve Alarm Fill Empty Fill Empty High Low ON ON ON OFF OFF Hysteresis Delay Delay M Plex No Alt Duplex Triplex Relays 1 2 Relays 2 3 Relays 3 1 A Time ON OFF Hours ...

Page 35: ...ned above 2 have been subjected to electrical mechanical or chemical damage due to improper accidental or negligent use 3 have been modified or altered 4 anyone other than service personnel authorized by Flowline have attempted to repair 5 have been involved in accidents or natural disasters or 6 are damaged during return shipment to Flowline Flowline reserves the right to unilaterally waive this ...

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