Available Available for application review and quotation
Moisture & Dew Point Measurement Series
CONG Prima-2M

CONG Prima-2M Water & Hydrocarbon Dew Point Transducer

Automatic laser-optical chilled-mirror transducer for online water dew point and hydrocarbon condensation temperature measurement in natural gas.

Brand: Vympel Manufactured by: LLC Scientific Production Association "Vympel", Russia Supply & support: Blue Dragon Technology
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Product Overview

Purpose-built measurement, clearly presented.

The CONG Prima-2M is an automatic chilled-mirror transducer for measuring water dew point and hydrocarbon condensation temperature in natural gas. It can operate in water-dew-point mode, hydrocarbon-condensation mode, or an alternating mode that registers both properties with one measurement cell.

The transducer is available for flow-through sample installations and direct-pipeline arrangements. Blue Dragon Technology reviews the required measurement mode and accuracy, pipeline and measurement pressure, gas composition, sample extraction, filtration, cooling, flow, installation environment, hazardous-area requirements, output type, and verification method before configuration.

Distinctive Capabilities

  • Laser-optical condensate detection with automatic measurement-cycle diagnostics
  • Field transducer architecture for natural-gas quality and dehydration monitoring
Performance & Technical Data

The measurement method and the values that matter.

How it measures

Measurement Principle

A temperature-controlled condensation mirror is monitored by a laser-optical system. As the mirror cools, the formation of water or hydrocarbon condensate changes the optical response, allowing the instrument to register the corresponding condensation temperature. The analyzer can repeat the measurement automatically and can alternate between water and hydrocarbon modes.

Measurement ParametersWater dew point and hydrocarbon condensation temperature
Measurement ModesWater dew point; hydrocarbon condensation temperature; alternating combined mode
Measurement PrincipleAutomatic chilled-mirror condensation measurement with laser optical detection
Water Dew Point Range-60 to +30 °C
Hydrocarbon Condensation Range-60 to +30 °C
Measurement Accuracy±0.5 °C or ±1.0 °C, depending on configuration

Complete Technical Data

Measurement Cycle
5-10 min
Maximum Operating Pressure
Up to 23 MPa
Sample Gas Temperature
-20 to +50 °C
Sample Gas Flow
0.2-2 L/min
Wetted Materials
Stainless steel, fluoropolymer, glass, and silicon
Output / Communications
RS-485 Modbus RTU or 4-20 mA
Electrical Connection
4 × 0.75 mm cable; 8-11.5 mm cable OD
Power Supply / Consumption
20-27 VDC / ≤15 W
Explosion Protection
1 Ex d IIB T5 X; II 2 G Ex db IIB+H2 T5 Gb
Enclosure Protection
IP67
Ambient Operating Temperature
-40 to +55 °C with supplied thermal-insulation case and protective cover
Installation
Flow-through or direct pipeline / submersible configuration
Dimensions / Weight
≤207 × 112 × 235 mm / ≤6 kg
Industrial Use

Applications and industries.

Typical Applications

Natural Gas Quality MonitoringWater Dew Point MeasurementHydrocarbon Condensation Temperature MeasurementGas Dehydration MonitoringPipeline Gas Quality MonitoringTrace Moisture Measurement in Gases

Industries Served

Chemical ProcessingEnvironmental Monitoring & ComplianceHydrogen & SyngasMetals, Mining & MaterialsNatural Gas & LNGOil & GasPipelines & MidstreamPower GenerationResearch & Industrial LaboratoriesSulfur Recovery & Gas Treating
Engineering & Integration

Built for specification, installation, and long-term operation.

The CONG Prima-2M is a field transducer whose result depends on the pressure and thermodynamic state at the mirror. The installation must preserve a representative natural-gas sample while controlling liquids, pressure, temperature, flow, and environmental exposure.

System TypeOnline field dew-point transducer
Measured PropertiesWater dew point and hydrocarbon condensation temperature
InstallationFlow-through or direct pipeline
Project FocusRepresentative gas sample and condensate control

System Configuration

  • StandardCONG Prima-2M transducer configured for water, hydrocarbon, or alternating measurement and the ordered accuracy class
  • OptionalFlow-through sample arrangement, direct-pipeline module, thermal-insulation case, protective cover, and associated sample-conditioning equipment
  • Project EngineeredExtraction probe, Model-003 or equivalent gas-preparation system, pressure and flow control, filtration, cooling, panel, shelter, and sample return or zero-emission arrangement

Sample Handling

  • StandardMaintain a representative natural-gas sample at the defined measurement pressure and within the specified temperature and flow limits
  • Application DependentSelect filtration and pressure control that protect the mirror without selectively removing the heavier hydrocarbon fraction being measured
  • Application DependentPrevent uncontrolled liquid carryover and identify glycol, methanol, compressor oil, aerosol, particulate, and other possible contaminants

Installation & Utilities

  • StandardProvide 20-27 VDC power, approved hazardous-area cabling, grounding, and maintenance access
  • OptionalUse the manufacturer thermal-insulation case and protective cover for the stated extended ambient range
  • Project EngineeredDirect-pipeline module, sample panel, shelter, heating, cooling, drainage, venting, and safe-zone interface equipment

Integration & Communications

  • StandardSelect either RS-485 Modbus RTU or 4-20 mA according to the ordered configuration
  • Project EngineeredDefine output scaling, Modbus registers, measurement-mode indication, quality flags, alarms, historian tags, and control-system ownership

Calibration & Quality Control

  • StandardFactory configuration and metrological documentation should identify the measurement mode, range, accuracy, and pressure conditions
  • Application DependentVerify the installed transducer against a suitable reference chilled-mirror hygrometer or approved gas-quality procedure at the relevant pressure

Maintenance & Service

  • StandardInspect mirror condition, flow path, seals, filters, tubing, and protective hardware according to the manufacturer manual
  • Application DependentCleaning and verification intervals depend on gas cleanliness, aerosol or glycol exposure, installation method, and the site quality plan

Safety & Application Considerations

  • StandardConfirm pressure rating, hazardous-area certification, gas compatibility, electrical installation, sample isolation, depressurization, and safe venting
  • Application DependentDirect-pipeline and high-pressure sample installations require approved mechanical design and maintenance isolation procedures
Application Review

Application Engineering Notes

Pressure basis

Water dew point and hydrocarbon condensation temperature vary with pressure. The measurement pressure and any contractual or reference-pressure correction should be defined in the project basis.

Representative hydrocarbon measurement

Filtration should remove damaging liquid or particulate contamination without stripping the representative heavy-hydrocarbon fraction that determines hydrocarbon condensation temperature.

Project Delivery

Project Integration & Support Scope

Blue Dragon reviews the measurement objective, interfaces, documentation, commissioning, and lifecycle requirements as part of project configuration. The scope below identifies the principal items to confirm before order placement.

Measurement Objective
Automatic online measurement of water dew point, hydrocarbon condensation temperature, or both alternately in natural gas at the defined measurement pressure.
Signal Outputs
The ordered transducer provides either RS-485 Modbus RTU or 4-20 mA. Final mode, scaling, registers, quality flags, and alarm handling are project specific.
Data Integration
Connect the transducer to the DCS, PLC, SCADA, historian, or local control unit using the ordered interface. Define the active measurement mode, engineering units, pressure basis, data quality, and any correction performed outside the transducer.
Alarms & Diagnostics
The project should define high water-dew-point and hydrocarbon-condensation alarms, measurement-cycle status, signal or communication failure behavior, sample-system alarms, and local or remote diagnostic indication.
Documentation
The project package may include the manufacturer operating manual, approved datasheet, metrological and hazardous-area certificates, connection and communication information, dimensional drawings, sample-system drawings, and commissioning records as ordered.
Commissioning Support
Commissioning can include installation inspection, pressure and leak testing, flow setup, mirror and sample-path checks, mode verification, output or Modbus testing, alarm simulation, and comparison with an approved reference instrument.
Lifecycle Support
Lifecycle support covers mirror and flow-path cleaning, filters, seals, pressure-control components, verification, troubleshooting, spare parts, metrological service coordination, and technical support through Blue Dragon Technology.
Online Analyzer Configuration

Sample System & Online Analyzer Readiness

Reliable online measurement depends on the process interface as well as the analyzer. Confirm the following application data before final configuration and quotation.

Sample Type & Phase
Representative single-phase natural gas at the defined measurement pressure. Provide full composition and identify free liquids, aerosol, glycol, methanol, compressor oil, particulate, and expected heavy-hydrocarbon content.
Measurement Range
State the normal and worst-case water dew point and hydrocarbon condensation temperature, required accuracy, measurement mode, alarm points, measurement pressure, and any contractual reference pressure.
Sample Conditions
Provide pipeline pressure and temperature, intended measurement pressure, gas temperature, available flow, ambient range, composition, contaminant loading, and sample vent or return conditions.
Sample Handling
Define flow-through or direct-pipeline installation, extraction probe, tubing, filtration philosophy, pressure control, flow control, cooling, bypass, liquid handling, calibration connection, and sample return or disposal.
Installation Area
Confirm indoor or outdoor location, hazardous-area classification, ambient exposure, direct-pipeline mechanical requirements, protective cover or insulation needs, shelter space, and maintenance access.
Utilities
Provide 20-27 VDC power, approved hazardous-area wiring, grounding, sample flow, and any heating, cooling, purge, drainage, or safe-vent utilities required by the selected arrangement.
Response Requirement
State the required measurement-cycle frequency, sample transport distance, acceptable stabilization time, alarm delay, and response expectations following process changes or mode switching.
Integration Requirement
Select RS-485 Modbus RTU or 4-20 mA and define scaling, register mapping, measurement-mode status, alarm logic, data-quality flags, historian tags, and any pressure correction performed in the host system.
Commissioning Requirement
Confirm pressure and leak tests, flow setup, thermal checks, mirror inspection, measurement-mode verification, analogue or Modbus checks, alarm simulation, reference comparison, training, and records.
Application Engineering

Discuss your measurement application.

Share the sample, measurement range, operating conditions, project location, and timeline. Blue Dragon Technology will review the application and recommend the appropriate configuration.

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