AMETEK , PROCESS INSTRUMENTS A PRODUCT DATA SHEET MEASURES: H2S (optional COS and CH3SH) 933 Hydrogen Sulfide Analyzer The 933 is a unique UV-based photometric analyzer system for hydrogen sulfide in natural gas The 933 uses AMETEK's proprietary frontal elution chromatography sampling technique, combined with the exceptionally high-resolution, multi-wavelength 900 Series ultraviolet (UV) optical bench. These combine to provide an accurate, interference-free measurement of hydrogen sulfide (H2S). The result is a unique low-level H2S analyzer that is designed for unattended operation for an extended time period. • Fast response, fast recovery • Ranges from 0-3 to 0-100 parts per million (ppm) • Optional measurement of carbonyl sulfide (COS) and methyl mercaptan (CH3SH) • Direct measure of H2S, no scrubbing Self-recovery Two self-regenerating columns are employed in the 933. While one column is conditioning the gas sample, the other is automatically regenerated. Interference free measurements The 933 utilizes unique, proprietary frontal elution chromatography to separate H2S, COS and CH3SH from interfering components in natural gas. Accurate performance Non-dispersive, dual-beam hollow cathode UV photometric detection of H2S (optional COS and CH3SH) provides accuracy better than ±0.25 ppm. Hkey benefits • Extended, unattended operation • Fully integrated analyzer and sample system • Self-recovery after high concentration H2S events • Fast response time to increasing or decreasing H2S concentrations • Concentration measurements of COS and CH3SH optionally available • No consumables, reagents, or disposables other than zero gas EH APPLICATIONS • Natural gas sweetening • Amine contactor overhead • Natural gas custody transfer stations • Natural gas pipelines • Synthetic natural gas (SNG) • Natural gas blending stations • Carbon dioxide (CO2) purity • Biogas KEY MARKETS • Natural gas • Refining • Chemical and petrochemical • Industrial gas
The 933 is a unique UV-based photometric analyzer system for H2S analysis when present in concentrations below 100 ppm in natural gas and other applications. The analyzer responds quickly to changes in H2S concentration and it quickly self. Extraction, transport, conditioning systems for continuous emissions monitoring CEM; ABOUT US. Businesses; Sustainability at AMETEK; AMETEK Growth Model; Management Team.
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| Specifications | |
|---|---|
| Brands | AMETEK® Process Instruments Western Research |
| Methodology | Proprietary Frontal Elution Sampling Nondispersive Ultraviolet Analysis for Hydrogen Sulfide (H2S) Carbonyl Sulfide (COS) and Methyl Mercaptan (MeSH) |
| Full Scale Ranges | ppm ranges are standard; mg/Nm3 and other ranges are available |
| Standard Range for Full Scale (±) | 2 % |
| Maximum Hydrogen Sulfide (H2S) | 0 to 25 ppm 0 to 1000 ppm |
| Maximum Carbonyl Sulfide (COS) Option | 0 to 500 ppm |
| Minimum Carbonyl Sulfide (COS) Option | 0 to 100 ppm |
| Maximum Methyl Mercaptan (MeSH) Option | 0 to 50 ppm |
| Minimum Methyl Mercaptan (MeSH) Option | 0 to 250 ppm |
| Ambient Temperature Range | 0 to 50 ºC 32 to 122 ºF |
| Approximate Weight | 100 kg 220.5 lb |
| Industry Standards/Certifications |
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| Low Range | |
| Hydrogen Sulfide (H2S) | 0 to 3 ppm 0 to 50 ppm |
| Carbonyl Sulfide (COS) Option | 0 to 25 ppm 0 to 250 ppm |
| Methyl Mercaptan (MeSH) Option | 0 to 15 ppm 0 to 100 ppm |
| Accuracy | |
| Standard Range Accuracy of Full Scale (±) | 2 % |
| Low Range Accuracy of Full Scale (±) | 5 % |
| Repeatability | |
| Standard Range Repeatability of Full Scale (±) | 2 % |
| Zero Drift | |
| Standard Range | less than ±2% of full scale in 24 hours |
| Low Range | less than ±5% of full scale in 24 hours |
| Hydrogen Sulfide (H2S) Response Time Excluding Sampling System | Less than 30 seconds to 90% response |
| Carbonyl Sulfide (COS) Response Time Excluding Sampling System | Less than 60 seconds to 90% response |
| Methyl Mercaptan (MeSH) Response Time Excluding Sampling System | Less than 180 seconds to 90% response |
| Sensitivity of Full Scale | 0.5 % |
| Cross-Interference | H2S concentration measurement - less than 2% of the sum of COS and MeSH |
| Sample Stream Requirements | Greater than 80% methane, less than 10% ethane, less than 3% propane, less than 1.25% total butanes, less than 0.5% C5+. Maximum water content is 0.6%.1. |
| Zero Gas | Instrument zero purity carbon dioxide; UHP nitrogen, or UHP methane. Minimum auto-zero interval is once per 24 hours. |
| Process Pressure Requirement | 830 to 13790 kPag 120 to 2000 psig |
| Maximum Sample Cell Pressure | 6.9 barg 100 psig |
| Maximum Sample Gas Temperature | 50 ºC 122 ºF |
| Typical Flow Rate | 2.5 L/min 5 scfh |
| Digital Communication | RS-485 Modbus Port RS-232/RS-485 Service Port |
| Power Consumption | < 500 W |
| Power Requirements | |
| Alternating Current (AC) Voltage | 104 to 132 V 207 to 264 V |
| Frequency | 47 to 63 Hz |
| Current at 104 to 132 Alternating Current Voltage | < 3 A |
| Current at 207 to 264 Alternating Current Voltage | < 2 A |
| Dimensions | |
| Height | 1185 mm 46.65 in |
| Width | 30.7 in 780 mm |
| Depth | 254 mm 9.97 in |
| Outputs | |
| Up to 4 isolated 4-to-20 mA, loop or self-powered; 4 non-isolated 1 to 5 VDC; 5 independent sets of SPDT, Form C, potential free alarm relay contacts, 2 A at 240 VAC | |
| Additional Information | |
| No consumables, reagents, or disposables other than zero gas This is a low maintenance, reliable H2S analyzer in that reduces the high expenses associated with frequent scheduled and unscheduled maintenance. The Model 933 has a unique sample conditioning system that uses frontal elution chromatography to separate and eliminate interfering species. This ensures an accurate analysis of the gas via direct-UV absorption spectroscopy. Two self-regenerating columns are employed in the 933. While one column is conditioning the gas sample, the other is automatically regenerated. | |
| Note | |
| Higher ranges are available upon request | |
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933 Hydrogen Sulfide (H2S) in Natural Gas Analyzers - 933933 Hydrogen Sulfide (H2S) in Natural Gas Analyzers - Combining Spectroscopy and Separation Science in Process and Emissions Monitoring933RM UV Hydrogen Sulfide (H2S AnalyzerGas Concentrations Measured - ApplicationNatural Gas Process Instrumentation - OtherWhen Capability is Critical - White-PaperProduct Line Description
The 933 is a unique UV-based photometric analyzer system for H2S analysis when present in concentrations below 100 ppm in natural gas and other applications. The analyzer responds quickly to changes in H2S concentration and it quickly selfrecovers from extreme upset conditions.
- Extended, unattended operation for up to 6 months or longer
- Self-recovery after high concentration H2S events
- Fast response time to increasing or decreasing H2S concentrations
- Concentration measurements of carbonyl sulfide (COS) and methyl mercaptan optionally available
Online H2s Analyzer
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