Condumax II Transportable

 Water & Hydrocarbon Dew-Point Analyzer

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 HC dew-point accuracy
  • Fundamental cooled mirror principle
Condumax II Transportable

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 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
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 Michell Instruments.


Natural Gas & Petrochemicals