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AlpHa Measurement Solutions |
pH in Pulp & Paper

pH in Pulp & Paper

Controlling and monitoring of pH in pulp and paper manufacturing is critical to ensure the bleaching process is optimized and the finished product is functional. If the pH measurement falls outside the specified range, it can cause printing inks to not adhere properly and dyes or brighteners to not perform as intended. Improper pH can also cause foaming in the process. If the pH of the pulp falls too far out from neutral, the fibers can flocculate and impact the quality of the product. pH is often measured in the headbox or pulp feed portions which is a continuous measurement application. AlpHa can provide custom design inputs including Tuff-Tip (AlpHa specific design for pulp and paper applications) reference junctions and mechanical assemblies.
paper and pulp mill
  • 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  
  • Custom Mechanical Assemblies Available
  • Tuff-Tip Option
  • HF Resistant
  • Warranty: 12 Months 
  • Form Factor
    • Process Body (applicable for Hot Tap or Live Tap mechanical assemblies)
    • 12 mm
    • Cartridge
    • Custom Options Available
  • Housing Material Options
    • Ryton® (PPS)
    • ABS
    • Epoxy
    • Polycarbonate
    • Kynar ® (PVDF)
    • Polyethylene
    • PEEK
    • PVC / CPVC
    • Teflon ™ (PTFE)
    • Ultem® (PEI)
    • Metal
      • Stainless Steel
      • Other Metals Available
    • Glass
  • 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
    • Double Junction
    • Single Junction
    • Custom Options Available
  • Reference Junction Material / Design
    • Porous Plastic (PTFE / HDPE / PP)
    • Ceramic Pin / Annular / Disc
    • Fiber / Pellon
    • 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
    • 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)
      • Tinned Leads
      • BNC
      • DIN
      • MOLEX
      • Mil-spec
      • 2.5 mm / 3.5 mm phono
      • RCA
      • Spade Lugs
      • LEMO
      • Circular Connectors
      • Any commercially available connectors and custom options available