Models 232.50, 233.50

Bourdon tube pressure gauge

Stainless Steel Series

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  • With liquid-filled case for applications with high dynamic pressure pulsations or vibration
  • Suitable for corrosive environments and gaseous or liquid media that will not obstruct the pressure system
  • Process industry: chemical/petrochemical, power stations, mining, on and offshore, environmental technology, mechanical engineering and plant construction

Special Features

  • Excellent load-cycle stability and shock resistance
  • All stainless steel construction
  • Positive pressure ranges to 20,000 psi (1600 bar)


ASME B40.100 & EN 837-1

2½”, 4” & 6” (63, 100 and 160 mm)

Accuracy class
2½”: ± 2/1/2% of span (ASME B40.100 Grade A)
4” & 6”: ± 1.0% of span (ASME B40.100 Grade 1A)

Vacuum / Compound to 200 psi (16 bar)
Pressure from 0/15 (1 bar) to 0/15,000 psi (1,000 bar) - 2½”, 4”
Pressure from 0/15 (1 bar) to 0/20,000 psi (1,600 bar) - 6”
or other equivalent units of pressure or vacuum

Working pressure
2½”: Steady: ¾  scale value
Fluctuating: 2/3 full-scale value
Short time: full-scale value

4” & 6”: Steady: full-scale value
Fluctuating: 0.9x full-scale value
Short time: 1.3x full-scale value


Operating temperature
Ambient: -40°F to +140°F (-40°C to +60°C) - dry
-4°F to +140°F (-20°C to +60°C) - glycerine-filled
-40°F to +140°F (-40°C to +60°C) - silicone-filled

Medium: +392°F (+200°C) maximum - dry
+212°F (+100°C) maximum - liquid-filled

Weather protection
Weather tight (NEMA 4X / IP65)

Pressure connection
Material: 316L stainless steel
Lower mount (LM) or lower back mount (LBM)
Center back mount (CBM) for 2½” size
¼” NPT or ½” NPT (other connections available)

Bourdon tube
Material: 316 stainless steel
>1,000 PSI (100 bar): C-shape,
≤1,500 PSI (100 bar): Helical

Stainless steel

White aluminum with black lettering; 2½” with stop pin

Black aluminum, adjustable

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