Externally Adjustable for Water, Oils and Gases
Quick Specs...
- Flow Rate Settings: Liquids - Infinite Adjustment between 1.9 and 75.7 L/min; Air/Gases - See chart
- Port Size: 1/2" NPT
- Primary Construction Material: Brass or Stainless Steel
- Setting Type: Adjustable
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Overview / Design Principle:
These externally adjustable switches are ideal for protecting machine tools from coolant flow failure, for protecting bearings from loss of lubricant or to assure proper air flow. They offer an infinite number of flow settings at pressures up to 68.9 bar (1000 PSIG), with low pressure drop and precise repeatability.
The adjusting vane is easily field adjustable using an ordinary flat-bladed screwdriver. The adjustment is set-screw-locked for tamper-free operation after field calibration.
Applications:
- Electronic Equipment: Laser Heads, Welders, Power Supplies, High Speed Spindles, X-Ray Tubes, Semiconductor Equipment
- Bearings or Gears: Presses, Rotating Equipment, Conveyors, Machine Tools, Robotics
- Processing & Dispensing Equipment: Water Purifications and Filtering, X-Ray Film Processing, Beverage Dispensing, Chemical Additives, Gas Sampling, Distilling
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Specifications:
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Wetted Materials
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Housing
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Brass or 316 Stainless Steel
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Piston (In Brass Housing)
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Polysulfone for Water
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Piston (In S.S. Housing)
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316 Stainless Steel Only
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Spring
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316 Stainless Steel
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O-Ring
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Viton ®
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Other Wetted Parts
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Epoxy
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Pressure Rating
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Operating
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68.9 bar (1000 PSIG)
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Proof
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172.4 bar (2500 PSIG)
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Burst
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344.7 bar (5000 PSIG)
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Operating Temperature
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With Brass or S.S. Piston
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-29°C to +148.9°C (-20°F to +300°F)
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With Polysulfone Piston
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-29°C to +107.2°C (-20°F to +225°F)
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Other Specifcations
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Repeatability
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1% Maximum Deviation
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Set Point Accuracy
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±10% Maximum
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Set Point Differential
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15% Maximum
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Switch*
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SPDT, 20 VA
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Inlet/Outlet
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1/2" NPT
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Electrical Termination
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No. 18 AWG, 24" L., Polymeric Lead Wires
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*These switches are not intended for use in freezing liquids or steam/high condensation environments. Contact Gems for alternative solutions if these environments exist.
IMPORTANT REED SWITCH INFORMATION: Read before installing.
Air/Gas Flow Adjustment Ranges
Water or oil flow units should not be utilized for air/gas applications. The FS-10798 Gas Flow configuration utilizes special dash-pot piston for reliability. The flow adjustment ranges are typical for air service. For other gases, the flow range will vary with the density of the gas. Please consult factory for more information.
For 5 PSIG Line* 1 to 75 SCFM Approx.
For 100 PSIG Line 3 to 160 SCFM Approx.
*Minimum 5 PSI line pressure required.
FS-10798 switches are U.L. Approved for Class I, Division 2, Groups A, B, C, D hazardous locations.
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| A |
Flow Actuation Adjustment |
| B |
2" (50.8 mm) |
| C |
4-1/8" (104.7 mm) |
| D |
1/2" NPT Both Ports |
| E |
1-1/4" (31.7 mm) |
| F |
5/8" (15.8 mm) |
| G |
3/4" (19.0 mm) |
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| A |
1-1/16" (26.9 mm) MAX. |
| B |
1/2" (12.7 mm) |
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