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Flow Set Point Switching  RFS Types  Gems Sensors

Gems Sensors Flow Set Point Switching

RotorFlow ® Switches build an extra level of reliability and protection into your equipment. By principle of operation, the rotor cannot be deceived into indicating a positive flow situation when no flow actually exists.
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RFS Types

Gems Sensors Flow Set Point Switching

 Flow Set Point Switching 

Quick Specs... 

  • Combines visual confirmation of flow with dynamic, electronic switch operation 
  • Easy, adjustable switch point calibration: a local LED signals when set point is reached

Overview / Design Principle: 

RotorFlow ® Switches build an extra level of reliability and protection into your equipment. By principle of operation, the rotor cannot be deceived into indicating a positive flow situation when no flow actually exists. Once set to a desired actuation point, RotorFlow will switch to a “no-flow” condition should the rotor stop for any reason. 

Applications: 

  • Semiconductor Processing Equipment 
  • Lasers 
  • Medical Equipment 
  • X-Ray and Other High Power Tubes 
  • Robotic Welding Equipment

 

Specifications 

Wetted Materials  

Body  

Brass, Stainless Steel or Polypropylene (Hydrolytically Stable, Glass Reinforced)  

Rotor Pin  

Ceramic  

Rotor  

PPS Composite, Black 

Lens  

Polysulfone  

O-Ring 

Viton® (Alloy Bodies); Buna N (Polypropylene Body) 

Low Flow Adaptor                  

Glass Reinforced Polypropylene  

Operating Pressure, Maximum   

Brass or Stainless Steel Body 

200 PSIG @ 70°F (13.8 bar @ 21°C), 100 PSIG Max. @ 212°F (6.9 bar Max. @ 100°C) 

Polypropylene Body  

100 PSIG @ 70°F (6.9 bar @ 21°C) , 40 PSI Max. @ 180°F (2.8 bar Max. @ 82°C) 

Operating Temperature 

Brass or Stainless Steel Body 

-20°F to 212°F (-29°C to 100°C) 

Polypropylene Body  

-20°F to 180°F (-29°C to 82°C)  

Other Specifications 

Electronics  

150°F (65°C) Ambient  

Viscosity, Maximum               

200 SSU  

Input Power 

24 VDC or 110 VAC    

Relay Contact Ratings (SPDT)   

1 Amp, 24 VDC Resistive; 0.3 Amp, 110 VAC  

Repeatability   

2% Maximum Deviation  

Set Point Accuracy (Factory Set)    

± 5%  

Set Point Differential  

15% Maximum  

Electrical Termination   

20 AWG PVC-Jacketed, 24"Cable. Color Codes: Red = +VAC/VDC,
Black = Ground,
White = N.O. Contact,
Brown = N.C. Contact
Green = Common 
 

Special Requirements: GEMS caters to OEM needs with special configurations for potable water and enhanced chemical capabilities. Consult factory for further details.

 

Polypropylene Bodies 
 RFSDIM1 
A   .64" (16.3 mm) 
B   2.37" (60.2 mm) 
C   2.50" (63.5 mm) 
D   3.06" (77.7 mm) 
E   .80" (20.3 mm) 
F   2.38" (60.5 mm) 
G   .80" (20.3 mm) 
H   4.50" (114.3 mm) 
Brass and Stainless Steel Bodies - .25" and .50" Port 
RFSDIM2 
A   2.37" (60.2 mm) 
B   2.50" (63.5 mm) 
C   3.01" (76.4 mm) 
D   .87" (22.1 mm) 
E   2.32" (58.9 mm) 
F    1/4" ports = .80" (20.3 mm) 
 1/2" ports = .87" (22.1 mm)
 
G   4.50" (114.3 mm) 
Brass and Stainless Steel Bodies - .75" and 1.00" Port 
RFSDIM3 
A  2.50" (63.5 mm) 
B  3.94" (100 mm) 
C  1.06" (26.9 mm) 
D  2.95" (74.9 mm) 
  E   1.06" (26.9 mm) 
  F   4.76" (120.9 mm) 

Product Documentation

RFS Types
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