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Pressure Calibrators – Single or Dual Range

Advanced dual or single range pressure calibrators
  • Ranges: (in PSI) 0.3, 1, 5, 15, 30, 100, 300, 500, 1000, 1500, 3000, 5000 and 10000
  • One (311) or two (321) isolated, stainless steel pressure sensors
  • Temperature compensation to ensure field use accuracy
  • External pressure module connection supports all BetaPort—P pressure
  • modules (25+ ranges) using optional BPPA-100 Pressure Module
  • Adapter
  • Pt100 RTD input for temperature measurement
  • Internal 24 V DC loop power supply
  • Measure 24 mA or 30 V DC
  • Large, backlit, configurable display for 1, 2 or 3 variables
  • Switch test on Pressure (internal or external)
  • Five (5) frequently used setups and be stored and recalled
  • % error and damping functions
  • RS-232 port for remote operation
  • Compact handheld design
  • Powered by 4 AA Alkaline batteries
  • Displays in user’s choice of engineering units: PSI, Bar, mBar, kPa, MPa, kg/cm2, cm H2O @ 4°C, cm H2O @ 20°C, cm H2O @ 60°F, m H2O @ 4°C, m H2O @ 20°C, m H2O @ 60°F, in H2O @ 4°C, in H2O @ 20°C, in H2O @ 60°F, ft H2O @ 4°C, ft H2O @ 20°C, ft H2O @ 60°F, mm Hg, in Hg and one USER defined unit
The BetaGauge 321/311 is a general purpose, high accuracy pressure calibrator with special features
intended to facilitate calibration of mass flow computers. With one or two internal pressure ranges and an available adapter for external BetaPort—P pressuremodules, the possibilities are extensive. In addition, it has a port to connect a precision RTD probe for the temperature factor calibration required for electronic flowmeters (EFMs).
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2 variations of this product are available.

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Compareitem specifications
Max Pressure Pressure Accuracy Pressure Resolution
Availability Pricing
Martel LTP-100A RTD Probe, 100 Ohm, LEMO connector, 1/4" dia x 10" L EW-16103-63 Mfr # 1919279
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Martel BG321-30/300 Beta Gauge 321A-30/300 Pressure Calibrator, Dual-Sensor 30 and 300 psi EW-68863-58 Mfr # 1919276-30/300
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