The HL-0001 Gauge and Flow Tubes
Written by Piotr N.2026-08-099 min read
TL;DR: Read the inlet gauge before you open the flow knobs. Each HL-0001 tube is marked from 0 to 60 SCFH and has its own knob.
The inlet gauge
The inlet gauge is marked in psi and kPa, and the dial reads USE NO OIL. Measuring range is 0–25 MPa. Read it after you open the cylinder valve slowly, with both flow knobs closed.
Two flow tubes
The HL-0001 has two flow tubes on one argon regulator. Each tube is marked in SCFH, from 0 to 60. Open each knob and set the ball to the mark you want on that tube.
Outlet and temperature
Rated outlet pressure is 0.2 MPa. The regulator is single-stage and positive-action. Working temperature is 0–50 °C. Keep oil and grease off the regulator.
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