Model 632.51

Low Pressure Capsule Gauges

Stainless Steel Case, High Overpressure Safety

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  • Suitable for pressure measurement at very low pressures
  • All stainless steel design suitable for gaseous, aggressive media in corrosive environments
  • Robust design and ingress protection NEMA 3 (IP54), suitable for outdoor use

Product features

  • High overpressure safety up to 50 x full scale value
  • Measuring chamber protected against tampering
  • Low measuring error and influence on function from medium pollution


Nominal Sizes
4" and 6" (100 and 160 mm)

+/- 1.6% of full scale scale value 

From 0...1" H2O (2.5 mbar) to 0...40" H2O (100 mbar)
or all other equivalent vacuum or compound ranges

Pressure limitation
Steady: Full scale value
Fluctuating: 0.9 x full scale value

Overpressure safety
50 x full scale value

Permissible temperature
Ambient:-4oF...+140oF (-20...+60oC)
Meduim: +212oF (+100oC maximum)

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.

Ingress protection
NEMA3 (IP 54 per EN 60529/IEC 529)

Process connection (wetted)
316 stainless steel lower mount,
1/2" (male), 22 mm wrench flat

Pressure element (wetted)
316 stainless steel

Measuring chamber (wetted)
316 Stainless steel

Sealing (wetted)

Stainless steel

Aluminum, white, black lettering

Adjustable pointer, aluminum, black

Zero adjustment
By means of adjustable pointer

Stainless steel, with pressure relief plug

Laminated safety glass

Bezel ring
Cam ring (bayonet type), stainless steel

Mounting by means of:
Stem mounting
Mounting bracket for wall or pipe mounting (option)
Mounting flange (option)

Low Pressure Capsule Gauges
  • Low Pressure Capsule Gauges
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