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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
HACH32510.03 Sensor cable (3 m) to connect M/K-type sensor with Orbisphere 410/51x instruments 381 
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K1200-H High level spare optical spot (0-40 ppm) for K1200 nuclear sensors 407 
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HACH32510.05 Sensor cable (5 m) to connect M/K-type sensor with Orbisphere 410/51x instruments 425 
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LXZ525.99.A0002 SC4500 External USB Box, WiFi, US 434 
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LXZ525.99.C0005 SC4500 Modbus TCP/IP Upgrade Kit 434 
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LXZ525.99.D0004 SC4500 Conductivity Module 500 
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LXV525.99CD5551 SC4500 Controller, RTC-N/DN(ORP)(DO) Module, Modbus TCP + LAN, 2 digital Sensors, 100-240 VAC, EU plug 13438 
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  • Altitude
  • 3000 m (9842 ft) maximum
  • Analog Output Functional Mode
  • Linear, PID
  • Communication (optional)
  • Analog:Five 0-20 mA or 4-20 mA analog outputs on each analog output moduleUp to two analog Input modules (0-20 mA or 4-20 mA). Each input module replaces a digital sensor input.Digital:Profibus DPV1 moduleModbus TCPProfinet IO moduleEthernet IP module
  • Compatible Instruments
  • Compatible Sensors and Analyzers / Software Version (Release Year)Amtax sc / V2.30 (2018) or higherA-ISE sc / V1.02 or higherAN-ISE sc / V1.08 (2013) or higherN-ISE sc / V1.02 or higherNitratax clear sc, Nitratax eco sc, Nitratax plus sc / V3.13 (2013) or higherNT3100sc/NT3200scPhosphax sc / V2.30 (2018) or higherPhosphax sc LR/MR/HR / V1.01 (2018) or higherTSS sc / V41.73 (2013) or higherSolitax sc / V2.20 (2013) or higherTU5300sc, TU5400sc / V1.34 (2017) or higherSS7 sc (in Bypass) / V1.06 (2006) or higherUltraturb sc / V3.06 (2017) or higher1720E / V2.10 (2006) or higherSonatax sc / V1.15 (2016) or higherCL17sc / V2.7 (2019) or higherCL10sc / V1.14 (2013) or higher9184sc, 9185sc, 9187sc* / V2.03 (2013) or higherUvas plus sc / V3.01 (2017) or higherLDO 2 sc* / V1.22 (2013) or higher3798sc* / V2.03 (2013) or higher3700sc + Inductive Conductive Digital Gateway 6120800 / V3.00 (2017) or higher3422sc, Analog 3400 + Contacting Cond. Digital Gateway 6120700 / V3.00 or higherpHD sc*, pHD-S sc / V3.10 (2016) or higher1200-S sc* / V2.04 (2013) or higher pHD analog + Digital Gateway 6120500 / V3.00 (2017) or higherRC and PC analog sensor + Digital Gateway for conventional analog pH and ORP sensors 6120600 / V3.00 (2017) or higher 8362sc* / V3.00 (2017) or higher*Hardware Version1 of instrument is not supported
  • Compatible Network Technologies
  • GSM 3G/4G (e.g. AT&T, T-Mobile, Rogers, Vodafone etc.)CDMA (e.g. Verizon)
  • Compliance Certifications
  • CE. ETL certified to UL and CSA safety standards (with all sensor types), FCC, ISED, KC, RCM, EAC, UKCA, SABS, C م (Morocco)
  • Conduit Openings
  • ½" NPT conduit
  • Dimensions
  • ½ DIN - 144 x 144 x 192 mm (5.7 x 5.7 x 7.6 in.)
  • Display
  • 3.5-inch TFT colour display with capacitive touchpad
  • Enclosure Rating
  • UL50E type 4X, IEC/EN 60529–IP 66, NEMA 250 type 4XMetal enclosure with a corrosion-resistant finish
  • Indoor/Outdoor
  • Outdoor installation in direct sunlight or UV radiation requires UV protection screen and/or sunroof
  • 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: Two Ethernet connectors (10/100 Mbps)Cellular: External 4GWi-Fi
  • Operating Temperature Range
  • -20 to 60 °C (-4 to 140 °F) (8 W (AC)/9 W (DC) sensor load)-20 to 45 °C (-4 to 113 °F) (28 W (AC)/20 W (DC) sensor load) Linear derating between 45 and 60 °C (-1.33 W/°C)
  • Outputs
  • LAN + Modbus TCP
  • Pollution Degree
  • 4
  • Power Requirements (Voltage)
  • 100-240 VAC ±10%, 50/60 Hz; 1 A
  • Power Supply
  • With EU plug
  • Protection Class
  • I, connected to protective earth
  • Relays
  • Two relays (SPDT);Wire gauge: 0.75 to 1.5 mm² (18 to 16 AWG)AC controllerMaximum switching voltage: 100 - 240 VACMaximum switching current: 5 A Resistive/1 A Pilot DutyMaximum switching power: 1200 VA Resistive/360 VA Pilot DutyDC controllerMaximum switching voltage: 30 VAC or 42 VDCMaximum switching current: 4 A Resistive/1 A Pilot DutyMaximum switching power: 125 W Resistive/28 W Pilot Duty
  • Sensor Input #1
  • Digital
  • Sensor Input #2
  • Digital
  • Software available
  • RTC-N/DNRTC-N/DN(ORP)RTC-N/DN(DO)
  • 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?
  • SC4500 Controller, RTC-N/DN, RTC-N/DN (ORP), RTC-N/DN(DO), with EU plug; includes mounting hardware
LXV418.99.90002 UVAS plus sc UV Sensor, 50 mm path length, with automatic cleaning 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)
  • Measuring Principle
  • UV absorption measurement (patented 2-beam technique)
  • Operating Temperature Range
  • 2 - 40 °C
  • Parameter
  • SAC
  • Pressure Range
  • 0.5 bar
  • Range
  • 0.01 - 60 1/m
  • Warranty
  • 12 months
  • Weight
  • 3.6 kg
  • What's included?
  • SAC probe, user manual
HACH1000A4F3313 GLI Model 33 Enclosure Gasket 19 
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HACH6428P0 Differential 1.5 1309 
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  • Body Material
  • LCP
  • Cable Length
  • 3 m 10 ' 2-conductor (twisted pair)
  • Flow
  • Max. 3 m/s
  • Length
  • 180 mm
  • Material
  • Ground Electrode: Titanium or Hastalloy C
  • Mounting
  • Convertible
  • Pressure Range
  • Max. 10.7 bar sensor only (pressure range of mounting hardware to be checked separately)
  • Special Notes
  • pH sensor with built-in two-wire transmitter providing 4-20 mA output
  • Warranty
  • 12 months
  • Weight
  • 0.6 kg
  • What's included?
  • Includes: sensor with 10 ft cable and manual

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