FlowLine Switch-Tek LH-25 Series Скачать руководство пользователя страница 6

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MN301310 Rev A 

Installation

 

Step Four 

  

 

GENERAL INFORMATION 
 

1.  Switches should be installed rigidly so the floats are free to move as the liquid level changes. 
2.  Switches should be mounted in a tank area free of severe turbulence or protected from such turbulence 

by appropriate and adequate slosh shields or barriers such as bypass chamber or stand pipes.. 

3.  Vertical switch stems should be vertical for best results, but satisfactory operation is possible in most 

liquids with the stem 

 20° angle from vertical. 

4.  Horizontal mount switch stems must be mounted with the arrow vertically either up or down depending 

on switch operation. 

5.  Care should be taken that switches are always operated within electrical ratings. 
6.  The switch state (open or closed) for vertical switches can be changed from normally open when dry to 

normally closed when dry or vice versa by removing the float and reversing it on the stem (see Step 
Five). 

7.  The switch state (open or closed) for horizontal switches can be changed from normally open when dry 

to normally closed when dry or vice versa by rotating the float 180° across its axis (see Step five). 

Top Wall Installation (LV20 series only):

  FLOWLINE’s LV20 

mini-float switch may be installed through the top wall of a tank.  
Because the thread of the sensor is very small (1/8”), finding 
standard fittings may be difficult.  In lieu of standard fittings, one 
suggestion is to use a larger pipe, such as ½”.  Place a cap or plug 
on the end of the pipe and tap a 1/8” thread into the end.  Secure 
the other end of the pipe to the top of the tank or to a clamp.  For 
pipes longer than 2’, be sure to extend the cable (splice) so that the 
connection is not exposed to the liquid.    
 

 

Through Wall Installation (LH25 series only):

  FLOWLINE’s LH25 mini-float switch may be installed through 

the side wall of a tank.  The LH25 series has dual male 1/2" NPT threads for installation from the outside of the 
tank in or the inside of the tank out.  If the LH25-_201 is installed in the Outside-In method, then the outer 
threads may be used for connection to conduit. 

 
Inside-Out 
Installation 

 

 
Outside-In 
Installation 

 
 

 

 

 

Содержание Switch-Tek LH-25 Series

Страница 1: ...0500 Hu Swit Mini Float Li LV20 LH umbolt Street Los tch T quid Level Sw 25 Series LV Alamitos CA 9072 Tek witch Manual V20 1201 20 p 562 598 3015 5 f 562 431 8507 w flowline com LH25 120 LV20 5201 01...

Страница 2: ...e probe becomes immersed in liquid the float becomes buoyant and the magnet elevates causing the reed switch to change state TABLE OF CONTENTS Specifications 3 Dimensions 4 Safety Precautions 5 Instal...

Страница 3: ...NEMA 6 IP68 Sensor Material LV20 12_1 PP LV20 52_1 PVDF LH25 1201 PP LH25 5201 PVDF Wire Jacket Mat l LV20 12_1 PVC LV20 52_1 TFE LH25 1201 Polymeric LH25 5201 TFE Wire Type 2 conductor 22 gauge Wire...

Страница 4: ...4 MN301310 Rev A Specifications Dimensions Step Two DIMENSIONS LV20 1201 LV20 1251 LV20 5201 LV20 5251 LH25 1201 LH25 5201...

Страница 5: ...lypropylene PP with a Polymeric cable The LV20 52_1 mini float vertical switch and the LH25 5201 mini float horizontal switch are made of Polyvinylidene Fluoride PVDF with a Tetrafluoroethylene TFE ca...

Страница 6: ...or closed for horizontal switches can be changed from normally open when dry to normally closed when dry or vice versa by rotating the float 180 across its axis see Step five Top Wall Installation LV...

Страница 7: ...eries For proper orientation make sure the LV20 series is not off axis more than 20 For the LH25 series make sure the body of the float is horizontal and not off axis by more than 20 In addition make...

Страница 8: ...the factory in the Normally Open NO configuration The normal state is when the float is resting on the bottom of the stem An orientation mark will appear on the top of the float when it is in the NO c...

Страница 9: ...he switch becomes wet the float becomes buoyant and circuit closes As the switch becomes wet the float becomes buoyant and circuit opens CONTACT PROTECTION REED SWITCH When current is interrupted the...

Страница 10: ...Controller LC42 1001 Shown LC10 LC11 Series Controller LC11 1001 Shown NOTE When using a latching relay the polarity of both switches must be equivalent i e both switches are wither wired Normally Ope...

Страница 11: ...ncompatible solvents that may damage the sensor s PP or PVDF plastic body Take particular care to remove any scaling from the float body and make sure that it moves freely 4 Sensor installation Follow...

Страница 12: ...edures outlined 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 personne...

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