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Water or air, measure H2S where it matters – right at the source.


Meet the new GS1440 and GS1440EX hydrogen sulfide sensors from Hach. Whether in water or air, you will have the direct H2S measurement you need to optimize your H2S treatment process and proactively control H2S before it causes issues.

Catalog No. Product Net Price
HACH9020000 Hach LDO sc Model 2 , DO Probe with Luminescent Dissolved Oxygen Technology 2397 
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  • Body Material
  • Stainless
  • Cable Length
  • 10 m (33 ft)
  • Calibration Method
  • All Probes are factory calibrated and ready to useAir Calibration: one point, 100% water saturated airSample Calibration: comparison to standard instrument, or comparison to Winkler Titration method
  • Length
  • 254 mm
  • Operating Temperature Range
  • 0 - 50 °C
  • Pressure Range
  • Max 3.5 bar
  • Range
  • 0 - 20.00 ppm
  • Repeatability
  • ± 0.1 ppm (mg/L)
  • Storage Conditions
  • -20 °C to 70 °C
  • Warranty
  • 36 months
  • Weight
  • 1 kg (2.2 lbs), probe only
  • What's included?
  • Includes: sensor with cable, calibration bags, and manual
HACH9253400 Mounting Conversion Adapter, LDO Model 1 to LDO Model 2 40 
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YAB018 4-20 mA Input Board for SC1000/SC1500 Controller and 5500 sc Analyzers 1201 
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YAB019 4x 4-20 mA Output Board for SC1000/SC1500 Controllers and 5500 sc Analyzers 913 
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LXZ449.99.D0001 CAx440EX Field Transmitter Data License, 1 year 732 
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LXZ449.99.D0002 CAx440EX Field Transmitter Data License, 2 years 1178 
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LXZ449.99.00007 Crossbeam, GS1440/GS2440EX 492 
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  • Material
  • Stainless steel, EN 1.4404
  • Weight
  • 3.4 kg (7.5 lb)
  • What's included?
  • Crossbeam, 2x clamps, 4x screws
HACH9253500 LDO Model 2 Air Blast Components Kit 592 
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HACH31210.12 EC Sensor, Hydrogen, PEEK, 50 bar, O-Ring FKM/FPM Special offer 
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  • Certifications
  • IP68 / NEMA4
  • Material
  • O-Ring: FKM/FPM
  • Parameter
  • Hydrogen
  • Protection Class
  • IP68 / NEMA4
  • Range
  • Range at 25 °C Membrane 2956A : 0 - 75 ppb or 0 Pa - 5 kPaMembrane 2952A : 0 - 300 ppb or 0 Pa - 20 kPaMembrane 2995A : 0 - 3200 ppb or 0 Pa - 200 kPaMembrane 29015A : 0 ppb - 32 ppm or 0 - 2000 kPa
  • Warranty
  • 12 months
  • Weight
  • 140 to 700 grams, depending on the construction materia
  • What's included?
  • Sensor and manual. Controller, sensor cable, flow-chamber or process connection must be ordered separately.
HACH31230.01 Orbisphere Hydrogen (H₂) EC Sensor in stainless steel with EPDM O-ring (100 bar) Special offer 
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  • Certifications
  • IP68 / NEMA4
  • Protection Class
  • IP68 / NEMA4
  • Range
  • Range at 25 °C Membrane 2956A: 0 - 75 ppb or 0 Pa - 5 kPaMembrane 2952A: 0 - 300 ppb or 0 Pa - 20 kPaMembrane 2995A: 0 - 3200 ppb or 0 Pa - 200 kPaMembrane 29015A: 0 ppb - 32 ppm or 0 - 2000 kPa
  • Warranty
  • 6 months
  • Weight
  • 140 - 700 g, depending on the construction material
  • What's included?
  • Sensor only.Controller, sensor cable, flow-chamber or process connection must be ordered separately.

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