Model 612.20

Low Pressure Capsule Gauge

Stainless Steel Case, Copper Alloy Wetted Parts

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Applications

  • Low pressure pneumatic systems
  • Suitable for fluid medium, gaseous or dry that does not corrode copper alloy.

Product features

  • Low pressure series
  • Copper alloy wetted parts & stainless steel case
  • Capsule pressure gauge

Specifications

Design
EN837-3

Size
2.5", 4" & 6" (63 mm, 100 mm & 160 mm)

Accuracy class
± 1.5% of span

Ranges (All ranges not stocked)
Size 2.5": (63 mm): 0...10 (25 mbar) to 0...250" H2O (600 mbar)
Size 4" (100 mm): 0...4" H2O (10 mbar) to 0...250" H2O (600 mbar)
Size 6" (160 mm):  0...2.5" H2O (600 mbar)
or all other equivalent vacuum or compound ranges

Connection
Copper alloy
Size 2½ (63 mm):
¼" NPT lower moutn (LM) or center back moutn (CBM)
Size 4" & 6" (100 mm & 160 mm): ¼" NPT or ½" NPT lower mount (LM) or lower back mount (LBM)

Capsule Element
Material: copper alloy

Movement
Copper alloy, nickel-silver pinion gear and shaft.
Zero adjustment screw on dial

Dial
White aluminum with black lettering

Pointer
Black aluminum (zero adjust on dial. Must remove
window to access)

Case
304 stainless steel with stainless steel bayonet ring

Weather Protection
Weather resistant (NEMA 3 / IP 54)

Standard Scales
in. H2O/mm H2O
oz.-sq. in./mm H2O
oz.-sq. in./in. H2O
PSI

Window Gasket
Buna-N

Window
Flat instrument glass

Working Range
Steady: Full scale value
Fluctuating: 0.9 x full scale value

Operating Temperature
Ambient:   -4°F to 140°F (-20°C to 60°C)
Media:      max. 212°F (+100°C)
                 max. 176°F (+80°C) for 4” & 6" LBM

Temperature error
Additional error when temperature changes from reference temperature of 68°F (20°C) +0.6% of span for every 18°F (10°C) rising or falling.

 

Low Pressure Capsule Gauge
  • Low Pressure Capsule Gauge
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