This Model 331S Transportable is designed as a temporary H2S analyzer solution. The 331S utilizes field proven tape based technology that provides a linear and interference-free output of H2S. Certified for Class I, Div 2, Groups A, B, C and D.
Features
- Fast Response times using Rapid Response Algorithm (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
Downloads (PDF)
Certification
- For all analyzers produced prior to March 1, 2016: CSA Certification
- For all analyzers produced as of March 1, 2016: ETL Certification
Video Tutorials
Log On Procedure
Retrieving Archives
Adjusting Analog Output range
Tape Change Procedure
Application Flexibility
The Model 331S Transportable comes in a rugged weatherproof transport case along with a standard sample system and can measure H2S in natural gas. 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 331S Analyzers for full configurability.
- Field friendly interface via front display panel
- Easily configurable alarm processor and calculation processor
- 3 Mb event triggered archive storage
- Alarm/Event log
- Customizable serial RS-232 & RS-485 mapping
- Numerous modes of communication including 4-20mA outputs, alarm outputs, solenoid drivers, serial Modbus and Modbus TCP
Specifications
| Power | 100–240 VAC, 50/60Hz or 12-24 VDC @ less than 3 watts |
| Electrical classification | Certified for Class I, Div 2 Grps A, B, C, & D |
| Ambient Temperature | 0 to 50˚C (32 to 122ºF) std. Contact for other requirements. |
| Output Ranges | H2S 0-1 ppm to 0-200 ppm |
| Response time | 20-sec alarm |
| Accuracy | +/- 1% full scale for ranges 1 to 50 ppm +/- 1.25% full scale for ranges > 50 ppm +/- 1.5% full scale for ranges 0.5 to 1 ppm +/- 2.5% full scale for ranges < 0.5 ppm |
| Repeatability | +/- 1% full scale for ranges 1 to 50 ppm +/- 1.25% full scale for ranges > 50 ppm +/- 1.5% full scale for ranges 0.5 to 1 ppm +/- 2.5% full scale for ranges < 0.5 ppm |
| Inputs | 4 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. |
| Dimensions | 31.59″W x 20.47″H x 12.45″D (80.2 x 52 x 31.6 cm) |
| Weight | 56 lbs (25.5kg) |
| Sample Pressure | 5-2500 psig (35-176kPa) 0 to 100°C (32 to 212°F) |
| Configuration Software | Windows® software for customer configuration, archive retrieval, and Modbus mapping. |
| * | Product specifications subject to change without notice to improve reliability, function, design, or otherwise. |
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 analyzer to measure Total Sulfur. |
| CO2 | Dual-beam IR bench. CO2 concentration is displayed on second line of display and can be configured to output 4-20 mA. CO2 from 0-2% up to 0-20% |
| Configuration Software | A custom GUI for customer configuration, archive retrieval, Modbus mapping. |
| 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 permeable membrane dilution. |
| Liquid Sampling | Liquid sample system to measure H2S from hydrocarbon liquids. |
| Custom Systems | Envent can design custom integrated systems to meet application requirements. |
| Panels | 331 is 13″W x 15″H x 8″L fiberglass enclosure. Standard system and 331 are mounted on a 24″W x 16″H x ¼” thick anodized panel. |
