Condumax II
Hydrocarbon Dew Point Analyzer
Condumax II is a fully self-contained hydrocarbon dew point analyzer that uses the proven "Dark Spot" hydrocarbon dew point measurement principle from the highly successful Condumax instrument as its foundation. Combining a hydrocarbon dew point cell and water dew point measurement in the same compact and lightweight enclosure which has been certified by CSA for use in hazardous locations, Condumax II requires nothing more than AC power to operate.
Product Features
- Fully automatic on-line analysis
- Objective, repeatable measurements
- 1°F hydrocarbon dew point accuracy
- Fundamental chilled mirror principle
- Patented detection technique
- Self-cleaning
- CSA Certified
- ATEX approved to Ex II 2 G EExd IIB + H2 T4 for hazardous area operation
- No purge air or external cooling system required
- Optional combined water and hydrocarbon dew point analysis
- Modbus RTU communications protocol

Technical Specification
HYDROCARBON DEW POINT MEASUREMENT
| SENSOR | |
|---|---|
| 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 |
| Maximum Range | -29°F HCDP from 70°F ambient @ approximately 400 psig (range depends on sensor temperature) |
| Accuracy | ±1°F hydrocarbon dew point |
| Sample Gas Flow Rate | 1 scf/hr (0.03 m³ln/hr) |
| WATER DEW POINT MEASUREMENT (OPTIONAL) | |
| Accuracy | ±2°F from -74 to +68°F dew point; ±3.5°F from -148 to -76°F dew point |
| Sample Gas Flow Rate | 2 to 10 scf/hr (0.06 to 0.3 m³/hr) |
| PRESSURE MEASUREMENT | |
| Type | HCdp - 0 to ±1500 psig Wdp - 0 to ±3000 psig |
| Accuracy | ±0.25% FS, thermal hysteresis: ±1% over a T of 144°F |
| HYDROCARBON DEW POINT ANALYSER | |
| Sample Gas Supply | Natural gas up to 1500 psig, pressure regulated in sampling system. |
| Enclosure | EExd cast enclosure with removable glass window viewing port. Internally heated for condensation protection. |
| Sample Gas Connections | ¼" NPT female ports for both hydrocarbon and water dew-point channels. |
| Operating Environment | Indoors/Outdoors -4 to +140°F. Max 95 %RH. |
| Power Supply | 90 - 264 VAC 50/60Hz, 200W Main Unit; 300W c/w indoor sampling system |
| Weight | Main Unit 50 lbs c/w Sampling System (indoor) 94 lbs(approx) c/w Sampling system (outdoor) 125 lbs (approx) |
| Integrated Display | Touch screen with vacuum fluorescent display. |
| Outputs and Alarms | Modbus RTU, RS-485 @ 9600 baud rate. Two 4-20 mA linear (non-isolated) outputs, user configurable for any combination of dew point or pressure parameters. Hydrocarbon and water dew point alarms via software register. Integrated low flow alarms for each sample flow. |
OPTIONS AND ACCESSORIES
Remote Interface Integrated safe-area control unit for Condumax II, providing display of all variables, charting and logging functions, parameter control and remote diagnostic facilities.
19" Sub-Rack unit with 6.5" colour LCD display and mouse control.
Remote Digital Display Two channel digital display for safe area use, providing indication of selected variables (any two from hydrocarbon dew point, water dew point or system pressures) on a bright, twin 3.5 digit LED display with analogue output re-transmission and dual alarms.
Plant control Integration ActiveX components to be used by software programmers for integration of modbus protocol into a general plant software system.