For 1/4"- 3/8 " Pipe Sizes
 Used to detect insufficient flow conditions for automated or controlled shielded welding processes.
AN APPLICATION SPECIFIC PRODUCT OFFERING
Lake's Weld Shield Gas Flow Switch has been developed specifically for use in harsh welding applications and will hold up to the typical conditions of the welding environment.
DETECT SYSTEM FLOW PROBLEMS
Use the Weld Shield Gas Flow Switch to give your PLC or control system a signal that allows for simple detection of flow problems.
FIELD ADJUSTABLE
The Weld Shield Gas Flow Switch has a low/no flow “fault” indicator set-point that is adjustable within the lower two thirds of the range in question.
NON-POWERED
Without batteries to fail or other electrical power considerations, the switch will provide a lifetime of simple and reliable operation.
METRIC AND US/STANDARD INDICATING RANGES
These indicators are offered with metric and standard units of measure.
MULTIPLE CALIBRATIONS AVAILABLE
This blind switch is offered with various gas calibrations and in two ranges to complement the variety of shielding gases and flow rates commonly used.
UNRESTRICTED MOUNTING
Accurate detection can be achieved in any mounting orientation, without the straight pipe required with other analyzer systems.
| Weld Gas Switch Application |
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|
| Materials of Construction |
|
WETTED COMPONENTS |
NON-WETTED COMPONENTS |
|
Component |
Materials |
Component |
Materials |
|
Casing |
Brass CA360 |
Switch Element |
ABS / Epoxy |
|
Seal |
Buna-N (STD) |
Cable |
PVC |
|
Transfer Magnet |
Bonded PPS / Ferrite |
Cord Grip |
Nylon |
|
Floating Orifice |
Brass CA360 |
Retainer Screw |
Stainless Steel |
|
All other internal parts |
Stainless Steel |
Scale |
Brass / Epoxy |
| Performance |
|
Flow measuring accuracy: |
±5% of range |
|
Repeatability: |
±2% of range |
|
Flow measuring range: |
See guide to standard flow meters for specific ranges
|
|
Maximum operating pressure: |
150 PSIG (10.3 Bar) |
|
Maximum operating temperature: |
240°F (116°C) |
|
Standard calibration fluids: |
Nitrogen, CO2, Argon C25 @ 70°F (43°C), 30 PSIG |
|
Filtration requirements: |
74 micron filter or 200 mesh screen minimum |
|
Response time: |
< 50 mS |
|
Switch type: |
Reed, Form A |
|
Switch logic: |
Fault Open |
|
Maximum switch current: |
1 A |
| Dimensions |
|
|
|
DIM |
1/4" NPTF
|
3/8" NPTF |
|
A |
4.28" (109 mm) |
4.43" (113 mm) |
|
B |
1.48" (38 mm) |
1.48" (38 mm) |
|
C |
1.42" (36 mm) |
1.42" (36 mm) |
|
D |
0.88" (23 mm) |
0.88" (23 mm) |
|
