Product Description
Transportable natural gas dew-point analyzer system for operation in the field. Suitable for IEC Zone 1 or 2 hazardous area, NEC Class I, Division 1 Groups B, C, D.
A complete transportable natural gas dew-point analysis system for field spot-check measurements. Periodic online operation when located in a temperature maintained analyzer house. Measurements and functionality are instantly accessible through integrated alphanumeric display and touch-glass HMI interface including log of dew-point readings for operator review.
Product Features
- Field transportable self-contained dew-point analyzer system
- Simultaneous HC and water dew-point measurements in a single analyzer
- Automatic objective measurements by industry proven principles
- Parameter specific sensors ensure continuity of HC and water dew-point readings
- Self-contained sample handling, conditioning and analysis package
- 0.5°C (0.9°F) HC dew-point accuracy
- Fundamental cooled mirror principle
Technical Specification
| Hydrocarbon Dew-Point Measurement | |
| Measuring Technique | DARK SPOT™ fixed sample analysis. Direct photo-detection of hydrocarbon condensate at hydrocarbon dew-point temperature |
| Sensor Cooling | Automatic via 3-stage Peltier effect electronic cooler under adaptive control |
| Maximum Range | Up to Δ 55°C (131°F) measurement depression from main unit operating temperature |
| Resolution | 0.1°C, 0.1°F |
| Accuracy | ±0.5°C (±0.9°F) hydrocarbon dew point (single and multiple condensible component analysis) |
| Sample Flow | 0.03 to 0.06m³/hr (0.5 to 1.0 Nl/min / 10.5 to 2.11 scfh) – low alarm standard |
| Measurement Frequency | 6 cycles/hour (recommended) 12 cycles/hour (maximum) |
| Water Dew-Point Measurement | |
| Measuring Technique | Michell Ceramic Moisture Sensor |
| Unit Selection | Dew Point: °C and °F water dew point Moisture Content: lb/MMscf; mg/m³, ppmV (conversion method IGT#8 or ISO18453) |
| Resolution | 0.1°C, 0.1°F 0.1 lbs/MMscf, 1 mg/m³ ppmV |
| Range | Calibrated from -100 to +20°Cdp (-148 to +68°F) |
| Accuracy | ±1°C (±1.8°F) from -59 to +20°C (-74 to +68°F)dew point ±2°C (±3.6°F) from -100 to -60°C (-148 to -76°F) dew point |
| Pressure Measurement(s) Hydrocarbon Dew-Point Analysis Pressure |
|
| Units | MPa, barg, psig |
| Resolution | 0.1 MPa and barg, 1 psig |
| Accuracy | Hydrocarbon Dew Point: ±0.25 barg Water Dew Point: ±0.5 barg |
| Hydrocarbon and Water Dew-Point Analyzer | |
| Sample Gas Supply | Natural gas up to 100 barg (1450 psig), pressure regulated in sampling system |
| Enclosure | Travel case is stainless steel 316 material construction with removable lid for access and rubber feet for transportation/ operation Instrument is EExd cast enclosure with removable viewing port: internally heated for condensation protection |
| Gas Connections | Sample inlet, filter by-pass outlet, system drain Sample system for: 1/4” NPT female ports, Quick connect Minimess® hoses Process connections: 1/4” NTP male |
| Operating Environment | Indoors/Outdoors 0 to +40°C (+32 to +104°F); Max 95% RH* |
| Power Supply | 110 or 230 V AC, 50/60 Hz, 300 W |
| Weight | 60kg (132lbs) (approx) |
| Logged Data | 150 data logs, sufficient for minimum 24 hour period (stored in volatile memory); Each Log: HC dew point and analysis pressure, water dew point and process line pressure Visual Review: HMI display with automatic statistical analysis; maximum, minimum, average values for duration of log period |
| Integrated Display / Keyboard | Touch screen with vacuum fluorescent display |
| 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; Additional connection junction box required externally |
| 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; Comprehensive analyzer status messages appear on HMI display; Additional connection junction box required externally |
| Certification | |
| Hazardous Area Certification | ATEX: II 2G 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 cCSAus: Class I, Division 1, Group B, C, & D T4 *TC TR: 1Ex d IIB+H2 T4, T3 Gb |
| *To assure correct measurement performance of this system in outdoor field use, the ambient air temperature must be at least 5°C above both the hydrocarbon dew-point temperature of the process gas sample at the cricondentherm condition, typically 27 barg, and water dew-point at full process line pressure. | |
Any Question at
+92 51 4862395
Office # 06, Rose-1 Plaza
I-8 Markaz, Islamabad
Mon-Sat
9 am – 5 pm
Send your mail at
info@tetracon.com.pk