Ashcroft 5509 Differential Pressure Gauges

Ashcroft 5509 Differential Pressure Gauges

Industrial Pressure Measurement & Monitoring

Ashcroft Instruments 5509 differential pressure gauge comes standard with 316 SS wetted parts and has a rugged gauge with an external zero adjust feature as standard.

Ashcroft Instruments 5509 Differential Pressure Gauges – Features & Benefits

  • ±2.5% full scale accuracy
  • Stainless Steel case
  • 316 Stainless Steel wetted parts
  • Inches of water differential ranges
  • External zero adjust
  • Available with open or solid front case styles
  • 4" (100 mm) or 6" (160 mm) dial sizes
  • Optional liquid-filled case
  • Static pressure for ranges
  • 160IW & lower – 145 psi
  • 160IW – 360 psi
Ashcroft Instruments 5509 Differential Pressure Gauges – Technical Specification
Model Number 5509
Accuracy +/-2.5% full scale
Ranges 0-10 IWD (inches of water differential) to 400 psid
Static Pressure

From 10 IWD to 3 psi - static pressure 145 psi

5 psi and above - static pressure 360 psi

Dial Size

4" or 6"

Zero adjust at top of case

Case Material 304 stainless steel open case (solid front optional)
Ring Bayonet ring
Window Shatterproof glass
Dial Aluminium, white background, black figures and intervals
Pointer Black painted alumnium with external adjust feature standard (to 25% of range)
Ingress Protection

IP54 (Dry)

IP65 (Liquid Filled)

IP65 Optional (Dry Case XLJ)

Diaphragm Material

316 stainless steel for ranges 10 psi and below.

High strength cobald alloy (Duratherm 600) for ranges 15 psi and above

Housing Material 316 Stainless steel with a Vitron 0-ring
Mounting Stem, wall or pipe
Connection Size 0.25" or 0.5" NPT
Connection Location Lower
Optional Features  
Glycerin Fill L - Standard
Silicone Fill XGV - Optional
Weatherproof / Hermetically Sealed Case (IP65) XLJ
Wall Mounting Bracket XFW
316 SS Case And Ring XYW
Pipe Mounting Bracket XTM
3-way Manifold X43
Polycarbonate Window XPD
Solid Front S
Calibration Chart C4
Oxygen Cleaning 6B
Stainless Steel Tag-Wired NH
Stainless Steel Tag-Bonded MN
Electric Contacts

Single Set Point - Close High Contact QH

                                Open Low Contact QL

Dual Set Point -    High & Low Contact ED

                                Double High Contact EE

                                Double Low Contact EF


Electric contacts are available as an option on both dry and liquid filled gauges. 


Ashcroft 5509 Differential Pressure Gauges

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Ashcroft 5509 Differential Pressure Gauges
Ashcroft 5509 Differential Pressure Gauges

Heat Tracing - Thorne & Derrick