For 1/4"- 3/8 " Pipe Sizes

System AnalyzerUsed 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
weld gas switch application

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
weld 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)

 

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