H2S Analyzer

Model: 330 H2S / Total Sulfur Analyzer

This uniquely rugged and simple design by Envent utilizes a lead acetate based sensing system that provides a linear and interference-free output of H2S and Total Sulfur concentration.

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Applications

Measures H2S and/or Total Sulfur in natural gas, petrochemical streams, condensate, or LPG.

Features

  • Ranges from 0–50 ppb to 0–100%
  • 1.5% accuracy, 1% repeatability
  • Modbus Serial communications,
  • Displays up to 5 times full scale
  • Dual Isolated 4–20 mA outputs
  • less than 20-second response time to alarm
  • Interference-free Lead acetate sensor
  • 60–90 day tape (longest tape life in the market)
  • Optional CO2 Sensor
  • Optional Total Sulfur

Value

The 330 measures H2S in natural gas or other process streams. The unit has dual 4–20 mA outputs, dual measurement alarms, plus trouble and fault alarm relays. An external magnetically-driven interface allows operator functions without opening any covers. The 330 displays H2S concentration in user specified units and as well will auto range to 5 times the lower calibrated range. Calibration is performed manually via the operator interface or automatically when connected to a calibration bottle with the optional auto calibration solenoid. The 330 is available with a number of optional sample systems and accessories to handle various applications such as high range H2S, Total Sulfur or H2S in liquids.

Lead Acetate Sensors: Lead acetate is essentially interference free from other sulfur compounds. This is why it is used by the vast majority in the industry when accurate measurement is required. The linear output enables the user to perform a single point calibration.

Longest Tape Life: The 330 offers the longest tape life in the market by using a proprietary tape advance algorithm to make complete use of the 300 foot tape. The unit will accept up to a 350-foot roll. Envent sensing tape is the strongest in the market.

Specifications

Power 12-24 vdc @ less than 3 watts or 100-240 VAC 50/60 HZ
Electrical classification Class 1, Div1 Grps C & D certified to CSA standards
Ambient Temperature 0–50 ˚C (std) consult factory for other requirements
Output Ranges H2S 0–50 ppb to 0–100 ppm are standard. Higher concentrations require optional dilution sample system.
Response time 20-sec alarm
Accuracy 1.5% of full scale (H2S only); 3.0% of full scale (TS and Dilution)
Inputs 24 bit A/D
Microprocessor-based sensor block
Low Tape Alarm
Remote calibrate, Stream switch, or Low pressure alarm
Outputs Dual isolated 4–20 mA (loop power required)
Modbus serial RS-232 & RS-485
Four 5 amp SPDT alarm relays (high reading, high high reading, low tape, failure)
Four solid state solenoid drivers ( auto cal, total sulfur, stream switching, valve actuator)
Displays 2 x 16 character LCD with backlighting
Menu is scrolled by internal button or external magnetic switch
Configuration Software A Windows™-based program for analyzer configuration, archive retrieval, Modbus mapping

Optional Equipment

Total Sulfur Total sulfur furnace—converts all sulfur compounds to H2S which allows analyzer to measure total sulfur. (Requires AC power)
Auto Calibration Allows user to initiate a calibration based on time or external switch
Stream Switching Allows switching of two input streams or from H2S to Total Sulfur measurement
Dilution Allows measurements up to 100% H2S using a permeable membrane and H2S-free carrier gas.
Liquid sampling Liquid sample system to measure H2S from hydrocarbon liquids
Custom systems Envent can design custom integrated systems to meet application requirements
Cabinets 30” x 36” fiberglass or stainless steel
Panels Standard system without cabinet is mounted on a 24”W x 32”H x ¼” thick anodized panel
CO2 CO2 measurement 0–20%
H2 Savings used on H2S/TS systems

 

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