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Key Features |
| Best for applications where the normal flow to
set point is 10:1 or less |
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| Applications |
| Wet Stations
Shipboard Water Systems
CVD Furnaces Cooling Water
Biomedical Instruments
Vacuum Systems
Coolant Failure Alarm
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| Features |
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Low Minimum Operating Pressure |
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Close ON-OFF differential |
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Ease of adjustability |
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In Line 180 Degree Porting |
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Monitors Gases or Liquids |
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Materials: 316ss, Brass, Teflon |
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Confirms: Normal flow conditions |
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Senses: High flow or Low flow conditions |
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Water or Explosion Proof Covers |
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Output: Switch Contact |
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| Operation |
With no flow present, the magnetic piston rests on the bottom of the bypass bore. When flow is established the piston is forced upward by the bypass flow and actuates the reed switch. The bypass flow is controlled by manual adjustment of the flow control vane. When flow decreases the piston moves downward and the reed switch deactuates.
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Actuation points for air at 68*F and 14.7 PSIA with increasing flow. |
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Deactuation (decreasing flow) averages 10% less than actuation (increasing flow). |
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Repeatability
±2% |
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Unit
will pass greater flows |
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Corrections
must be made for other gases, line pressure and
temperatures. Please consult your representative
or the factory. |
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| Calibration
Range |
MODEL |
AIR
SCC/M (SCFH) |
WATER
ML/M (GPH) |
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MINIMUM |
MAXIMUM |
MINIMUM |
MAXIMUM |
500BPHP |
6 (0.20) |
991 (35) |
0.11 (0.03) |
15.14 (4) |
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| Pressure
Loss Table |
AIR
FLOW RATE
CC/M (SCFH) |
WATER
FLOW RATE
ML/M (GPH) |
DP
TO
ATMOSPHERE
MBARS
(Inches of Water) |
84.9
(3) |
3.8
(1) |
17.2
(0.25) |
| 566.3
(20) |
15.1
(4) |
51.7
(0.75) |
| 1557.4
(55) |
30.3
(8) |
233.0
(3.38) |
| 1925.5
(68) |
37.9
(10) |
362.0
(5.25) |
| 2265.3
(80) |
64.4
(17) |
517.1
(7.50) |
At any given flow rate, pressure differential remains the same regardless of the actuation point. |
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| Switch
Data |
SPST
Hermetically Sealed
Reed Switch |
SPDT
SPDT is not recommended for A/C |
Max Switching Voltage
DC (V) 200
AC (V) 150 |
Max Switching Voltage
DC (V) 100 |
Contact Rating
DC (W) 50
AC (VA) 70 |
Contact Rating
DC (W) 3 |
Max. Switching Current
DC (A) 1.0
AC (A) 0.7 |
Max. Switching Current
DC (A) .25 |
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| Leads |
SPST
Leads 18 in. min. from body 22 AWG, TFE insulation. |
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SPDT
(optional)
Leads 18 in. min. from body 24 AWG, TFE insulation.
- green
- N.C.
- blue
- N.O.
- white
- Common
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Above
values for resistive loads only. For inductive loads,
surge current and rush current -- contact protection
is required; consult your local representative. SPDT
unit not UL Recognized. |
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Specifications |
Unit |
Weight
oz. (gm) |
Working
Pressure PSIG (BARG) |
Wetted
Parts |
Seals |
| Teflon® |
4.4
(123.5) |
100
(6.89) |
Teflon® |
Teflon® |
Brass |
16
(453.6) |
1500
(103.42) |
Brass,
TFE, Epoxy |
Viton® |
316ss |
16
(453.6) |
3000
(206.84) |
316ss,
TFE, Epoxy |
Viton® |
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Fluid
Ports: Inlet/Outlet
1/8" FNPT |
Electrical
Conduit Optional:Inlet/Outlet
1/8" FNPT |
Temperature
Operating Range: 32° to 220° F (0° to 104° C). For other temperature ranges, consult factory. |
Installation:
Mount vertically with the inlet port at bottom. A 10 micron fliter is recommended. |
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