Updated:2023-10-16
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Designed for Easy Mobile Hydrocarbon Dew-Point Checks
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 HC dew-point accuracy
Fundamental cooled mirror principle
Transportable hydrocarbon dew-point analyzer system for field-measurements in natural gas. 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.
Specifications
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 measurement depression from main unit operating temperature |
Resolution | 0.1°C, 0.1°F |
Accuracy |
±0.5°C hydrocarbon dew point (single and multiple condensible component analysis) |
Sample Flow | 0.03 to 0.06m³/hr (0.5 to 1.0 Nl/min) - low alarm standard |
Measurement Frequency |
6 cycles/hour (recommended) 12 cycles/hour (maximum) |
Water Dew-Point Measurement | |
Measuring Technique | Michell Ceramic Metal-Oxide 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 |
Accuracy |
±1°C from -59 to +20°Cdp ±2°C from -100 to -60°Cdp |
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, 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; Max 95% RH* |
Power Supply | 110 or 230 V AC, 50/60 Hz, 300 W |
Weight | 60kg (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 e IIB+H2 T3 Gb Ta= -20°C to +40°C IECEx: Ex d e IIB+H2 T3 Gb Ta= -20°C to +40°C |
*Available to customer specific order — consult Process Sensing Technologies. |
Suitable Applications
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