Quality Lab


      Acid Leak Detection (ALD)

      Acid Leak Detection (ALD)

      Acid Leak Detection (ALD) - process gauges

      Acid Leak Detection (ALD) Assembly has a special yellow coating that changes to red once it is exposed to acids with a pH of ≤ 3, providing visual indication of a leak of process media.

      Key Features:

      • Stainless steel 316L, Monel 400 or Hastelloy C-276 wetted parts
      • Custom dials available
      • Orange or yellow case for quick identification (optional)
      • Fill fluid for oxidizing acids
      • Pressure ranges up to 700 bar
      • Silicone-free PLUS!™ Performance (optional)
      • Cleaning for Oxygen service (optional)
      • NACE compliant assemblies


      • Accuracy: ±1.0% of span (1259, 1279) or ±1.5% of span (T6500)
      • Process Connection: 1/2 NPT male
      • Case Style: Solid-front with pressure relief back
      • Pointer: Micrometer, adjustable, aluminum
      • Weather Protection: Hermetically sealed: IP66
      • Dampening: PLUS!™ Performance (XLL)
      • Pressure Rating (MAWP):
        Standard: Vac to 100 bar @ 40°C
        Optional: 100 to 700 bar @ 40°C


      The T5500 pressure gauge is ideal where stable, pressure measurement is essential:

      Process Market:

      • Refineries, Hydrofluoric acid
      • Chemical and Petrochemical Plants
      • Offshore Oil Rigs
      • Water and Wastewater Pressure Control
      • Pulp and Paper
      • Mining and Metals

      Certificates & Approvals

      Process Market:

      • CE
      • CRN
      • EAC