Envent Model 330SDS

H2S & Total Sulfur Dual Stream Analyzer

Certified for Class I, Div 1, Groups B, C & D

The Model 330SDS H2S Analyzer utilizes field proven tape based technology that provides a linear and interference-free output of H2S on two streams simultaneously. An optional Total Sulfur measurement can be added to the analyzer as one of the streams. 

330SDS H2S / Total Sulfur Analyzer Data Sheet

  • Features
    • Fast response times using Rapid Response Algorithms (RRA) 20 seconds to alarm
    • No interference from other components in the sample
    • Low power consumption < 3 Watts
    • Extended tape life of 60-90 days
    • Measures up to 5 times the calibrated range
    • Quick delivery
    • Full field service & training available
  • Specifications
    Power 12-24 VDC @ less than 3 watts or 100-240 VAC, 50/60 HZ
    Electrical classification Certified for Class I, Div 1 Grps B, C, & D
    Ambient Temperature 0-50 °C (32 to 122 °F) std. Contact for other requirements.
    Output Ranges

    Standard Ranges: 0-5ppm up to 0-100ppm

    Custom Ranges Available: ppb levels and >150ppm to 30%

    Response time 20-sec alarm
    Accuracy +/- 1.5% full scale for ranges 0 to 50 ppm
    +/- 2.5% full scale for ranges < 0.5 ppm
    Repeatability +/- 1.5% full scale for ranges 0 to 50 ppm
    +/- 2.5% full scale for ranges < 0.5 ppm
    Inputs Four digital inputs individually configurable.
    Outputs Dual isolated 4-20 mA (loop power).
    (Modbus) serial RS-232 & RS-485 (Ethernet available).
    Four 5 amp SPDT alarm relays (high reading, high high reading, low tape, low pressure, low temperature, fault).
    Four solid state solenoid drivers (auto cal, total sulfur, stream switching, valve actuator).
    Displays 128 x 64 Graphic Display
    Menu is scrolled by internal button or external magnet.
    Dimensions 17.4″W x 32.7″H x 13.7″D
    (44.2 W x 83.1 H x 34.8 D cm)
    The Model 330SDS is mounted on a 24″W x 36″H x ¼”
    (60.96 W x 91.44 H x 0.635 L cm) thick anodized panel.
    Configuration Software Windows® software for customer configuration, archive retrieval, and Modbus mapping.
    Note Product specifications subject to change without notice to improve reliability, function, design, or otherwise.
  • Downloads
  • Software

    Please use the Contact Form for Envent for Software Requirements​​​​​​​

  • Certification
  • Application Flexibility

    The Model 330SDS measures H2S and/or Total Sulfur in natural gas, petrochemical streams, condensate, liquids, or LPG. Common applications include:

    • Sales Gas
    • Plant Inlet
    • Pipeline Monitoring & Blending
    • H2S Scavenger Systems
    • Wellhead Monitoring
    • Acid Gas
    • Fuel Gas Monitoring
    • Bio Gas
  • User Interface

    I.C.E. (Integrated Configuration Environment) is a Windows® based program that accompanies all 330SDS Analyzers providing full configurability.

    • Field friendly interface via front display panel without the need for a laptop
    • Easily configurable alarm processor and calculation processor
    • 3 Mb event triggered archive storage
    • Alarm/Event log
    • Customizable serial RS-232 & RS-485 mapping
    • Remote Display (optional)
    • Numerous modes of communication including 4-20mA outputs, alarm outputs, solenoid drivers, serial Modbus and Modbus TCP
  • Additional Advantages
    • Customized sample conditioning system
    • Analytical Accessories: Sample Probes, Field Stations, Heated Sample Line and Enclosures
    • Analyzer Walk-in Shelters
  • Optional Equipment
    SDS Dual Stream The 330SDS Analyzer measures two streams at the same time.
    Total Sulfur Total Sulfur furnace converts all sulfur compounds to H2S which allows the analyzer to measure Total Sulfur.
    CO2 Dual-beam IR bench. CO2 concentration is displayed on the second line of display and can be configured as a 4-20 mA analog output. CO2 ranges from 0-20% to 0-100%
    Stream Switching Allows switching of four (4) input streams or from H2S to Total Sulfur measurement.
    Dilution Allows measurements up to 30% H2S using permeable membrane dilution.
    Liquid Sampling Liquid sample system to measure H2S in Hydrocarbon liquids or water.
    Custom Systems Envent can design custom integrated systems to meet application requirements.

Contact us to learn more about this product

Hydrogen Sulfide + Total Sulfur Analyzers

Model 330S

The Model 330S is a Class I Division 1 H2S Analyzer utilizing field proven tape based technology that provides a linear and interference-free output of H2S.

Model 331S

The Model 331S is a Class I Division 2 H2S Analyzer utilizing field proven tape based technology that provides a linear and interference-free output of H2S.

Model 330S-Ex

The Model 330S-Ex is an ATEX and IEC certified H2S Analyzer utilizing field proven tape based technology that provides a linear and interference-free output of H2S.

Model 330SDS

The Model 330SDS is a Class I Division 1 H2S Analyzer providing a linear and interference-free output of H2S on two streams simultaneously.

Model 331SDS

The Model 331SDS is a Class I Division 2 H2S Analyzer providing a linear and interference-free output of H2S on two streams simultaneously.

Model 330SDS-Ex

The Model 330SDS-EX is an ATEX and IEC Certified H2S Analyzer providing a linear and interference-free output of H2S on two streams simultaneously.

Sensing Tape

Envent tape is 4 times stronger than any competitive tape at no extra cost.