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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
LXZ524.99.A0008 Claros Connector w/ LAN; 1 year 1334 
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  • Altitude
  • 2000 m (6562 ft) maximum
  • Analog Output Functional Mode
  • Linear, PID
  • Communication Capabilities
  • Profibus DPV1 card
  • Compatible Instruments
  • Ammonium: Amtax sc, AN-ISE sc, A-ISE scNitrate: Nitratax sc, N-ISE sc, Nitratax clear/eco/plus scPhosphate: Phosphax sc, Phosphax sc LROrganics: Uvas scpH/ORP: pHD sc, 1200-S sc, 8362scConductivity: 3700sc, 3798-S sc, 3400scOzone: 9185scDissolved Oxygen: LDO 2 scChlorine: CL10sc, CL17sc, 9184scChlorine dioxide: 9187scSuspended Solids: Solitax sc, TSS scSludge Level: Sonatax scTurbidity: TU5300sc/TU5400sc, Ultraturb sc, SS7 sc
  • Compatible Network Technologies
  • GSM 3G/4G (e.g. AT&T, T-Mobile, Rogers, Vodafone etc.)CDMA (e.g. Verizon)
  • Compliance Certifications
  • CE approved (with all sensor types). Listed for use in general locations to UL and CSA safety standards by ETL (with all sensor types).Certain AC mains powered models are listed for use in general safety locations to UL and CSA safety standards by Underwriters Laboratories (with all sensor types).
  • Conduit Openings
  • ½" NPT conduit
  • Dimensions
  • ½ DIN - 144 x 144 x 192 mm (5.7 x 5.7 x 7.6 in.)
  • Display
  • None
  • Enclosure Rating
  • NEMA 4X/IP66 metal enclosure with a corrosion-resistant finish
  • Installation Category
  • Category II
  • Material Enclosures
  • Polycarbonate, aluminum (powder coated), stainless steel
  • Measurements
  • Two device digital SC connectors
  • Mounting
  • Wall, Pole, or Panel Mounting
  • Network Connectivity
  • LAN version: Two Ethernet connectors (10/100 Mbps), switch function, M12 female D-coding connector.Cellular version: SIM card holder (3G/4G).The type of connection is dependent on controller configuration.
  • Operating Temperature Range
  • LAN version: -20 - 60 °C (-4 - 140 °F)Cellular version: -20 - 55 °C (-4 - 131 °F)
  • Outputs
  • Five 4-20 mA analog outputs on each analog output module
  • Pollution Degree
  • 2
  • Power Requirements (Voltage)
  • 100 - 240 VAC
  • Protection Class
  • I, connected to protective earth
  • Relays
  • High voltage:Two relays (SPDT)Maximum switching voltage: 250 VACMaximum switching current: 5 A (resistive only load)Maximum switching power: 1250 VA, 125 W (resistive only load)Wire gauge: 0.75 to 2.5 mm2 (18 to 12 AWG)Low voltage:Four relays on each low voltage relay module
  • Storage Conditions
  • -20 - 70 °C (-4 - 158 °F), 0 - 95% relative humidity, non-condensing
  • USB Port
  • Used for data download and software upload. The controller records approximately 20,000 data points for each connected sensor.
  • Warranty
  • 12 months
  • Weight
  • 3.7 lb (controller only, w/o modules)
  • What's included?
  • LXV524.99.010A0 SC4200c Claros Connector with LAN + internal 3G/4G US AT&T, w/o plugLXZ524.99.00046 Remote service connector for SC200LZY472-01 USB Ethernet AdapterLZY990 LAN CableCLAROS-YRLY Claros Base Fee (1-yr)MSM-SENSOR-YRLY MSM Sensor Subscription (1-yr)MSM-SENSOR-YRLY MSM Sensor Subscription (1-yr)STARTUP TRAVEL Service Travel ChargeMSM-STARTUP Service Commissioning Charge
LXV441.99.12102 FP 360 sc Oil-in-Water Sensor, 500 ppb, titanium body, 10 m (32.8 ft) cable, w/o cleaning unit 20790 
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  • Body Material
  • Titanium
  • Cable Length
  • 10 m (32.8 ft)
  • Length
  • 311 mm
  • Material
  • Housing: titanium
  • Pressure Range
  • Max 30 bar or 435 psia (measurement probe)
  • Range
  • 0 - 500 ppb (µg/L) (PAH) or 0.1 - 15 ppm (mg/L) (Oil)
  • Response Time T90
  • 10 s
  • Storage Conditions
  • -40 °C - 60 °C
  • Warranty
  • 12 months
  • Weight
  • 1.8 kg
  • What's included?
  • Oil-in-water probe, user manual
LXV418.99.10002 UVAS plus sc UV Sensor, 1 mm path length 20306 
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  • Cable Length
  • 10 m fixed cable at sensor
  • Controller
  • Sensor only
  • Length
  • 333 mm
  • Material
  • Sensor enclosure: stainless steel 316, 1.4571, single sealed bodyWiper axle: stainless steel 1.4104Cable gland: stainless steel 1.4305Cable gland seal: PVDFProfile carrier: stainless steel 1.4310Wiper arm: stainless steel 1.4581Wiper profile: SiliconeMeasuring window: Suprasil (quartz glass)
  • Operating Temperature Range
  • 2 - 40 °C
  • Parameter
  • SAC
  • Pressure Range
  • 0.5 bar
  • Range
  • 2 - 3000 1/m
  • Warranty
  • 12 months
  • Weight
  • 3.6 kg
  • What's included?
  • SAC probe, user manual
LXZ524.99.00013 SC4200c Holder for tablets/mobiles 254 
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LXZ524.99.00019 Main board cover + wiring labels SC4200c 31 
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MH336 Mounting Hardware, Flow-Thru, CPVC, 1-1/2 Inch 194 
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MH138M9NZ CPVC Insertion Mounting Hardware, 2 1116 
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MH538N9A 272 
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HACH6136400 Immersion Mounting Kit for Digital pH Sensor 253 
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MH434B Submersion Mounting Hardware 286 
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