HOME > Level switch > Float type level switch YF-RS series

Float type level switches

YF-RS series
YF-RS
Float type level sensor made of SUS that can detect multiple points

Other types than standard reed switches are also available to match the specific use conditions.

  • For liquid

Model with a small float (YF-RSS), and explosion proof versions are available. Changes can be made in the specifications (coupling method, material, L shape, surface processing, resistant to high pressure, etc.).

 

Features, keys

  1. Multi-point detection
    One unit can detect liquid levels at a maximum of 7 points.
  2. The unit is durable, highly reliable, and is not affected by temperature, humidity, or gases
    The unit is very reliable and durable thanks in part to the use of the highly reliable reed switch.
  3. The unit is intrinsically safe and explosion-proof due to the combination of the reed switch and relay isolator.
  4. The following two types can be selected for normal and small floats
    Normal float type: Can measure liquid levels maximum of 7 points ⇒ YF-RS
    Horizontal installation type: Can measure liquid levels maximum of 4 points ⇒ YF-RS□S

Usages, use examples

  • Detect levels of water, oil, and various liquid chemical agents
  • Control liquid levels at multiple points
    Ex.: Can be used with various applications, including controlling pumps, setting upper and lower limit alarms, and contributing to decreasing users’ total costs.
 

Standard specifications

Connection

Model name YF-RS YF-RSS
Terminal box
Materials ADC
Painted color Silver
Design IP65
Wiring hole G3/4
Connection Dimensions Flange JIS5K50A Flange JIS5K40A
Materials SUS304
Float Outside diameter Φ50xH48 Φ28xH27
Materials SUS316L SUS304
Measurable specific gravity 0.55 or more 0.7 or more
Stem Outside diameter Φ13 Φ8
(when 3 contact points are used Φ9)
Materials SUS304
Length dimension (Max.) 3,900mm 1,000mm
Electrical ratings Contact point capacity DC 50W/AC 70VA
Maximum open/close voltage 350V DC, 300V AC
Maximum open/close current DC 0.7A/AC 0.5A
Others Maximum number of points detected 7 4
Float withstanding pressure 1.0MPa 2.0MPa
Operating temperature (heat resistant type) -10 to +100 degrees (180 degrees)
L1 dimension (min) *1 48mm 20mm
L dimension (min) *2 88mm 50mm
Setting distance dimensions (min) *3 100mm 37mm
L-Ln dimension (min) *4 40mm 30mm

*1: The Ln dimension means a length from the set position to the bottom of the screw.
*2: The L dimension means the total length from the bottom of the screw.
*3: Setting distance dimensions refers to the minimum dimension when two stoppers are used.
*4: The L-Ln dimension refers to the difference between the final setting position (Ln) and total length.
Note: The values for *3 and *4 are true when the specific gravity of the liquid is 1.0.

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