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AlpHa Measurement Solutions |
pH in Refining & Petrochemical

pH in Refining & Petrochemical

The petrochemical and refining industries utilize water as a critical component. Monitoring and controlling pH throughout multiple stages of the production process is essential. In the petrochemical process, pH is measured both upstream and downstream. Upstream applications include fracking, drilling, and exploratory operations. Downstream applications include wet gas scrubber, merox (mercaptan removal), and wastewater generated within the plant. In refining, where fuel, lubricants, and other distillate end products are generated, the pH of water is a processing requirement and an indicator of potential contaminants. Sour water stripping, cracker scrubbers, and corrosion control in piping systems are examples where pH measurement is used for monitoring and control.
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  • pH Range: 0 to 14 pH
  • Response Time: 10s 
  • Drift: ±0.05 pH (in 24 hours) 
  • Accuracy: ±0.02 pH 
  • Temperature Range: -5 to 135°C
  • HF Resistant Option  
  • Tuff-Tip Option
  • Custom Mechanical Assemblies Available
  • Warranty: 12 Months 
  • Form Factor
    • 12 mm
    • Cartridge
    • Process Body
    • Custom Options Available
  • Housing Material Options
    • Ryton® (PPS)
    • Epoxy
    • Kynar® (PVDF)
    • PEEK
    • PVC / CPVC
    • Teflon™ (PTFE)
    • Ultem® (PEI)
    • Glass
    • Metal
      • Stainless Steel
      • Other Metals Available
  • Thermistor Options
    • PT100 (type A & B)
    • PT1000
    • 10 kohm
    • 30 kohm
    • 100 kohm
    • Any commercially available thermistors and custom options
    • Common Temperature Accuracy is ±0.3°C and can vary based on thermistor option chosen
  • Reference System
    • Ag / AgCl
    • Differential
    • Custom Options Available
  • Reference Junction Options
    • Single Junction
    • Double Junction
    • Custom Options Available
  • Reference Junction Material / Design
    • Ceramic Pin / Annular / Disc
    • Fiber / Pellon
    • Porous Plastic (PTFE / HDPE / PP)
    • Sleeve Junction / Free Flow (liquid / liquid or ground glass joint)
    • Open Aperture 
    • Solid State
    • Custom Options Available
  • Solution Ground
    • Integrated in Thermowell
    • Integrated in Body Housing
    • Stand-alone
    • Custom Options Available
  • Reference Electrolyte
    • Sealed
      • Soft Gel
      • Solid Gel
    • Refillable
      • Liquid
      • Soft Gel
    • Custom Options Available
  • Glass Sensor Shape
    • Bulb
    • Dome
    • Flat
    • Spear
    • Semi Micro
  • Integrated Insertions
    • 3/4" NPT
    • 1/2" NPT
    • 1" NPT
    • PG 13.5
    • Custom Options Available
      •  
  • Analog
    • Millivolts
    • 4 – 20 mA
    • 0 – 5 V
    • 0 – 10 V
    • Custom Options Available
    • Custom options available with preamp capabilities
  • Digital
    • RS-485 MODBUS RTU
    • Custom Options Available 
  • Connectors
    • Integrated Connectors (detachable or cableless)
      • S7
      • S8
      • Integrated BNC
      • Variopin
      • Custom Options Available
    • Connectors with Cables (including temperature)
      • BNC
      • DIN
      • MOLEX
      • Mil-spec
      • 2.5 mm / 3.5 mm phono
      • RCA
      • Spade Lugs
      • Tinned Leads
      • LEMO
      • Circular Connectors
      • Any commercially available connectors and custom options available

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