Model 711.12, 731.12 Differential Pressure Gauge

Brand: WIKA Instruments Ltd.
Type 711.12, Copper Alloy Wetted Parts, Type 731.12, Stainless Steel Wetted Parts
Features
  • Ranges from 10 psi (0.6 bar)
  • Differential pressure indication with moving disc
  • Economical and reliable design
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Type 711.12, Copper Alloy Wetted Parts, Type 731.12, Stainless Steel Wetted Parts
Features
  • Ranges from 10 psi (0.6 bar)
  • Differential pressure indication with moving disc
  • Economical and reliable design

Specifications

Sizes

  • 4" & 6" (100 mm & 160 mm)

Accuracy

  • + 1.5% of span

Ranges (All Ranges not Stocked)

  • Scale range must be selected based on the highest static pressure measured. The pressure differential to be indicated should be no less than 1/6 of the full scale range. When ordering please state both the static pressure applied and the differential to be indicated.
  • Pressure from 10 psi to 15,000 psi
  • Vacuum 30"Hg

Working Range

  • Short time: 1.3 x full scale value
  • Fluctuating: 0.9 x of full scale value
  • Steady: full scale value

Operating Temperature

  • max. 212o F (+100o C) - 1500 psi thru 15,000 psi
  • Media: max. 140° F (+60° C) - 10 pai thru 1000 psi
  • Ambient: -4° F to 140° F (-20° C to 60° C)

Temperature Error

  • Additional error when temperature changes from reference temperature of 68° F (20° C) +0.4% for every 18° F (10° C) rising or falling. Percentage of span.

Weather Protection

  • Weather resistant (NEMA 2 / IP 33)

Connection

  • Each side marked with + or -
  • Lower Mount (LM) only 2 x 1/4" or 1/2" NPT
  • Material: copper alloy

Bourdon Tube

  • Material: 316 stainless steel
  • 1,500 psi to 15,000 psi helical typ
  • Material: copper alloy
  • 10 psi to 1,000 psi C-type

Movement

  • Copper alloy, wearable parts Argentan

Dial

  • White aluminum with black lettering

Pointer

  • 1 graduated disk indicator with scale ± 50% of main scale range
  • 1 black pointer
  • Material: aluminum

Case

  • Black painted steel

Window

  • Flat glass

Cover Ring

  • Black painted steel screw retained

Typical Applications

  • Measurement of pressure differential or duplex measurement of 2 applied pressures (duplex measurement)
  • Heating, ventilation and air conditioning (HVAC)
  • For non corrosive, non crystallizing gaseous and liquid media
  • Type 731.12 suitable for aggressive media (SS compatible)

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