Hedland H771 Series Compressed Gases and Variable Area Flow Meter

Compressed Gases and Variable Area Flow Meter
H771 Series

• Direct reading
• Install in any position
• 360° rotatable guard/scale
• Easier-to-read linear scale
• No flow straighteners or special piping required
• Relatively insensitive to shock and vibration
• Temperature up to 240 °F
• Accuracy ±2% full scale
• Repeatability ±1%
• Special scales available
• Calibrated for 1.0 S.G.
MATERIALS | ||
2024 - T351 | Anodized aluminum body, piston and cone | |
C360 | Brass body, piston and cone | |
T303 | Stainless body, 2024 - T351 Anodized aluminum piston and cone | |
COMMON PARTS | ||
Spider Plate | T316 SS | |
Spring | T302 SS | |
Fasteners | T303 SS | |
Pressure Seals | Viton® | |
Guard | Polycarbonate | |
Retaining Ring | T316 SS | |
Retaining Spring | T316 SS | |
Indicator and Internal Magnet | PPS / Ceramic | |
Guard Seal / Bumper | Buna N | |
Scale Support | 6063 - T6 Aluminum | |
End Caps | Nylon ST | |
THREADS | SAE J1926/1, NPTF ANSI B2.2, BSPP ISO1179 | |
TEMPERATURE RANGE | -20 to +240 °F (-29 to +116 °C) for higher temperatures, consult factory | |
PRESSURE RATING | ||
Aluminum / Brass Operating | 1,000 psi/69 bar max. (250 psi/17 bar max. for 3” series) with a 10:1 safety factor. | |
For High Cycle Applications | please call | |
Stainless Steel Operating | 1,500 psi/103 bar max. with a 10:1 safety factor. | |
For High Cycle Applications | please call | |
PRESSURE DROP | please call | |
ACCURACY | ±2% of full scale | |
REPEATABILITY | ±1% |