Pressure Measurement

 
Ashcroft CXLdp Series Low Differential Pressure Transducers / Transmitters - Configure Model
  • Type (Pressure): Compound (Vacuum to Gauge), Differential
  • Display (Xmitters): No
  • Maximum Pressure: 25 IN of H2O (0.9032 psiWhat's This?)
  • Enclosure Type (Press Xmitter): Behind Panel / DIN Rail
  • Process Connection: Hose, NPT (National Pipe Thread)
  • Output Types (Xmitter): 4-20 mA, DC Voltage
From: $191.69 - $728.17
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Ashcroft DG25 Process Pressure Gauges - Configure Model
  • Type (Pressure): Compound (Vacuum to Gauge), Gauge, Vacuum
  • Style (Press Gauge): Digital Indicating
  • Accuracy (Digital-ASME B40.100 / B40.7 Grades): 0.25% F.S. (Grade 3A) Test / Process / Industrial
  • Units of Measure (Gauges): bar, ftH2O, inHg, kg/cm2, kPa, mmHg, MPa, Program Custom Units (digital), psi
  • Gauge Case Size: 2.5" (63 mm)
  • Gauge Case Material: ABS
From: $279.38 - $713.49
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Ashcroft E2G General Industrial Pressure Transducers / Transmitters
  • Type (Pressure): Absolute, Compound (Vacuum to Gauge), Gauge, Vacuum
  • Display (Xmitters): No
  • Maximum Pressure: 20000 psi
  • Enclosure Type (Press Xmitter): Compact (cigar type), Weatherproof
  • Process Connection: BSP (British Pipe Thread), NPT (National Pipe Thread), UNF (Unified Fine / SAE), VCR / VCO (Vacuum)
  • Electrical Connection (Press Xmitter): Amphenol/Bendix/DIN/Hirschman, Conduit, Flying Leads / Pigtail
From: $340.04 - $657.24
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Ashcroft G3 Pressure Transducer, Configure Model
  • Type (Pressure): Absolute, Compound (Vacuum to Gauge), Gauge
  • Display (Xmitters): No
  • Maximum Pressure: 300 psi
  • Enclosure Type (Press Xmitter): Compact (cigar type)
  • Process Connection: BSP (British Pipe Thread), NPT (National Pipe Thread), UNF (Unified Fine / SAE)
  • Electrical Connection (Press Xmitter): Amphenol/Bendix/DIN/Hirschman, Cable Gland, Conduit, Flying Leads / Pigtail
From: $278.16 - $632.76
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Ashcroft GC30 Compact Indicating Differential Pressure Transducer with Switch Outputs, configure model
  • Type (Pressure): Compound (Vacuum to Gauge), Differential
  • Display (Xmitters): Yes
  • Enclosure Type (Press Xmitter): Compact (cigar type)
  • Process Connection: NPT (National Pipe Thread)
  • Electrical Connection (Press Xmitter): Flying Leads / Pigtail
  • Output Types (Xmitter): DC Voltage
From: $343.55 - $632.37
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Ashcroft GC31 - Compact Digital Pressure Transducer with VDC and Switch Outputs
  • Type (Pressure): Compound (Vacuum to Gauge), Gauge
  • Display (Xmitters): Yes
  • Maximum Pressure: 1500 psi
  • # of Switches: 1
  • Enclosure Type (Press Xmitter): Compact (cigar type)
  • Output Types (Press / Temp Switches): Micro Switch
From: $378.96 - $400.08
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Ashcroft GC35 - Compact Digital Pressure Transducer with mA and Switch Outputs
  • Type (Pressure): Compound (Vacuum to Gauge), Gauge
  • Display (Xmitters): Yes
  • Maximum Pressure: 7500 psi
  • # of Switches: 2
  • Enclosure Type (Press Xmitter): Compact (cigar type)
  • Output Types (Press / Temp Switches): Micro Switch
From: $537.76 - $552.07
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Ashcroft GC51 Compact Process Pressure Transmitters, Configure Model
  • Type (Pressure): Compound (Vacuum to Gauge), Gauge, Vacuum
  • Display (Xmitters): Yes and Rotatable
  • Maximum Pressure: 7500 psi
  • Enclosure Type (Press Xmitter): Process, Wall Mount
  • Process Connection: NPT (National Pipe Thread)
  • Electrical Connection (Press Xmitter): Cable Gland, Conduit
From: $692.92 - $899.00
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GC52 Compact Differential Pressure Transmitter, Configure Model
  • Type (Pressure): Compound (Vacuum to Gauge), Differential, Vacuum
  • Display (Xmitters): Yes and Rotatable
  • Maximum Pressure: 400 IN of H2O (14.45 psiWhat's This?)
  • Enclosure Type (Press Xmitter): Process, Wall Mount
  • Process Connection: NPT (National Pipe Thread)
  • Electrical Connection (Press Xmitter): Cable Gland, Conduit
From: $1,042.31 - $1,248.39
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Ashcroft GC55 - Wet/Wet Differential Digital Pressure Transducer with Switch and (VDC or mA) Outputs
  • Type (Pressure): Differential
  • Display (Xmitters): Yes
  • Maximum Pressure: 300 psi
  • # of Switches: 2
  • Enclosure Type (Press Xmitter): Wall Mount, Weatherproof
  • Output Types (Press / Temp Switches): Relay
From: $576.48 - $766.41
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Ashcroft GL42 Indicating Low Differential Pressure Transmitter, Configure Model
  • Type (Pressure): Compound (Vacuum to Gauge), Differential
  • Display (Xmitters): Yes
  • Maximum Pressure: 25 IN of H2O (0.9032 psiWhat's This?)
  • Enclosure Type (Press Xmitter): Wall Mount
  • Process Connection: Hose, NPT (National Pipe Thread)
  • Electrical Connection (Press Xmitter): Cable Gland, Conduit
From: $479.58 - $741.48
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Ashcroft H-Series - B(H) Series Switches for Hydraulic Pressure
  • Type (Pressure): Gauge
  • # of Switches: 1
  • Output Types (Press / Temp Switches): Micro Switch
  • Enclosure Type (Press Switch): Weatherproof
  • Enclosure Material (Press / Temp Switches): Aluminum
  • Safety Approval (Press / Temp Switches): CE
From: $202.96 - $682.00
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Pressure Measurement

Industrial Pressure Measurement instruments come in many technologies and styles to suit the wide variety of needs for measuring pressure. Also important is related equipment to protect and service pressure measurement instruments.

Here are some broad categories of industrial Pressure Measurement instruments and related equipment. Selecting a Pressure Measurement instrument begins by deciding on a type.
  • Pressure Gauges are analog or digital gauges indicating absolute, gauge, or differential pressure of a fluid. Pressure gauges are ideal for a local display. Digital models can be battery powered. Some models may have programmable alarm switches
  • Pressure Controllers/Regulators will control flow based on set pressure. Controllers provide PID control and Regulators use mechanical means
  • Pressure Switches have one or two switches that trip at configured alarm setpoints on rising or falling pressure. Typically they do not display pressure
  • Pressure Transducers/Transmitters convert pressure from a fluid into an electrical signal such as 0-5 VDC, 0-10 VDC, or 4-20 mA that can be used for control, recording, and/or display. Transducers are typically strain gauge type and Transmitters are capacitance type
  • Remote Seals/Diaphragm Seals protect pressure measurement equipment and personnel from the dangers of a corrosive or extreme temperature processes
  • Siphon / Pressure Dampeners protect pressure measurement instruments. Siphons protect from hot fluids such as steam, while Pressure Dampeners protect against rapid pressure surges
  • Instrument Manifolds / Block and Bleed Valves are used to isolate the process from the pressure measurement instrument so that it can be serviced and calibrated
Other Pressure Measurement instrument selection considerations
  • Accuracy required?
  • Materials of construction? Chemical compatibility with the fluid, fluid temperature, ambient temperature, hazardous area classification, weatherproof, etc.
  • Are alarm relays required?
  • What kind of signal output, if any, is required?
  • Local display? Analog or Digital?
  • Minimum, maximum, and operating pressure range?
  • Process connection?  Threaded, flanged, sanitary
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