Envent Engineering is working in partnership with Michell Instruments to provide a more comprehensive product offering of online process instruments designed specifically for measuring hydrocarbon moisture in Natural Gas. The Condumax II Hydrocarbon Dew-Point Analyzer by Michell Instruments is designed to provide automatic, on-line measurement of hydrocarbon and water dew-point in Natural Gas.
Features
- Fully automatic on-line analysis
- Objective, highly repeatable measurement
- 0.5°C (0.9°F) hydrocarbon dew-point accuracy
- Fundamental chilled mirror measuring principle
- Patented detection technique
- Self-cleaning
- No purge or cooling gas needed
- Optional water dew-point analysis available
- Modbus RTU
- IEC/Ex, ATEX, cCSAus and GOST EX certifications
- Built-in verification of customer process gas
- Intuitive, 4.3″ LCD display with touch pad operation. No “hot work” permit required
- Class I, Division 1 certified for hazardous areas
- Integrated sampling conditioning system
- 40 years of expertise in moisture measurement built into the design.
Downloads
Certification
Applications
- Natural gas processing
- Protection of turbo-expander plant
- Gas quality measurements at custody transfer
- Transmission pipeline monitoring
- Confirmation and control of fuel gas ‘super-heat’ to turbine powerplant
Specifications
Hydrocarbon Dew-Point Measurement
| Measurement Technique | Dark Spot™ fixed sample analysis. Direct photo-detection of hydrocarbon dew-point temperature |
| Sensor Cooling | Automatic via 3-stage Peltier effect electronic cooler uner adaptive control |
| Measurement Range | Up to Δ -55K measurement depression from Main Unit operating temperature |
| Accuracy | ±0.5°C hydrocarbon dew-point (single and multiple condensable component analysis) |
| Sample Flow | 0.03m3/hr (0.5 NI/min) – alarm standard |
| Measurement Frequency | 6 cycles/hour (recommended) 12 cycles/hour (maximum) |
| Operating Pressure | Max 100 barg (1450 psig) |
Pressure Measurements
| Units | MPa, barg, psig |
| Resolution | 0.1 MPa and barg, 1 psig |
| Range | HC dew-point: 0 to 100 barg (0 to 1450 psig) Water dew-point: 0 to 200 barg (0 to 2900 psig) |
| Accuracy | ±0.25% FS |
Water Dew-Point Measurement (optional)
| Measuring Technique | Michell Ceramic Moisture Sensor |
| Units-Moisture Content | °C and °F water dew-point; lbs/MMscf; mg/m3; ppmv |
| Resolution | 0.1deg;C, 0.1deg;F |
| Range (dew-point) | Calibrated from -100 to +2deg;C (-148 to +68deg;F) |
| Accuracy (dew-point) | ±1deg;C (1.8deg;F) from -59 to +20deg;C (-74 to +68deg;F) ±2deg;C (3.6deg;F) from -100 to +68deg;C (-148 to +154deg;F) |
| Sample Flow | 0.06 to 0.3 m3/hr (1 to 5 NI/min) – alarm standard |
| Temperature Coefficient | Algorithm compensation (-20 to +50deg;C) |
| Operating Pressure | Max 138 barg (2000 psig) |
Hydrocarbon Dew-Point Analyzer
| Resolution | Hydrocarbon and water dew point: 0.1°C (0.18°F) |
| Sample Gas Supply | Natural gas up to 100 barg (1450 psig), pressure regulated in sampling system |
| Sample Gas Connections | 1/8″ NPT (ATEX / IECEx) or 1/4″ NPT (CSA) female ports for both hydrocarbon and water dew-point channels; Sampling system: 6mm OD or 1/4″ OD |
| Operating Environment | Indoors/Outdoors -20 to +50°C (-4 to +122°F), Max 95% RH |
| Power Supply | 90 to 260 VAC 50/60 Hz, 125 W Main Unit 300W c/w indoor sampling system 400W c/w outdoor sampling system |
| Weight | ~60kg (132.3 lbs) c/w Sampling system |
| Display | Touch screen with vacuum fluorescent display |
| Sample System Enclosure | Carbon Steel or 316L Stainless Steel optional |
| Outputs | Modbus RTU, RS485 @ 9600 baud rate. Two 4-20 mA linear (non-isolated) outputs, user configurable for any combination of dew point or pressure parameters |
| Alarms | Process and analyzer status via software register and display annotation. Integrated low flow alarms for each sample flow. Analyzer status fault flag 23 mA on mA output 1 |
| Hazardous Area Certification | ATEX: II 2 G Ex d IIB + H2 Gb IECEx: Ex d IIB + H2 Gb Tamb -40°C to +45°C T4 Tamb -40°C to +60°C T3 CSAus: Class I, Division 1, Goups B, C & D, T4 *TC-TR: 1Ex d IIB+H2 T4, T3 Gb *Available to customer specific order (Please consult Envent) |
| Pattern Approval | GOST-R, GOST-K, GOST-T |
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