York Instrument DPSS-6100 Online Dew Point Sampling System

Overview

The York Instrument DPSS-6100 Online Dew Point Sampling System is an engineered solution designed to condition and deliver representative process gas samples to capacitive polymer-based dew point analyzers under real-world industrial conditions. Unlike standalone dew point sensors, the DPSS-6100 addresses a critical operational gap: the requirement for stable, clean, and pressure-regulated sample streams prior to measurement. It operates on the principle that accurate dew point determination—especially at sub-ambient levels (–80 °C to +20 °C typical range)—demands strict control over sample temperature, particulate load, pressure fluctuations, and flow dynamics. The system integrates modular pre-conditioning components—including high-pressure regulators, sintered stainless-steel particulate filters, fine-adjustment needle valves, and isolation ball valves—into a compact, field-installable manifold assembly. Its architecture supports continuous operation in compressed air, nitrogen, natural gas, instrument air, and other non-corrosive industrial gas streams where moisture specification compliance is governed by ISO 8573-1 (compressed air purity classes), ASTM D6673 (moisture in gaseous hydrocarbons), or internal quality control protocols.

Key Features

• Modular component architecture enabling configuration flexibility for varying inlet pressures (up to 20 MPa), flow rates (0–2 L/min), and contaminant profiles
• Stainless-steel sintered filter (GP-09 type) with certified 2 µm filtration efficiency, compliant with ISO 12500-1 for solid particle removal
• Precision needle valve (YK-00-01) providing repeatable, low-torque flow regulation without hysteresis or drift
• High-integrity pressure regulator (YK-00-00) rated for sustained operation at 20 MPa, featuring metal-to-metal sealing and thermal stability across –20 °C to +60 °C ambient
• Full traceability of wetted materials: 316L stainless steel body, EPDM or FKM elastomer seals (application-specific), and oxygen-cleaned variants available per CGA G-4.1
• Pre-assembled, leak-tested manifold with Swagelok®-compatible fittings (¼” NPT, 6 mm tube OD) and optional calibration port for in-situ verification

Sample Compatibility & Compliance

The DPSS-6100 is validated for use with inert and non-reactive process gases including compressed air, nitrogen, argon, helium, and purified natural gas. It is not recommended for use with aggressive halogenated compounds, hydrogen sulfide, or highly acidic or alkaline streams without material compatibility review. All configurations adhere to Chinese national standards GB 50029-2014 (compressed air station design), GB 50093-2013 (instrumentation installation and QA/QC), and GB 50030-2013 (oxygen system safety). When deployed upstream of analyzers used in pharmaceutical clean utility monitoring (e.g., USP or EU GMP Annex 1), the system supports audit-ready documentation including material certifications, pressure test reports (1.5× MAWP hydrostatic), and traceable calibration records for individual components.

Software & Data Management

As a hardware sampling subsystem, the DPSS-6100 does not incorporate embedded firmware or data logging. However, it is fully interoperable with third-party dew point transmitters supporting 4–20 mA analog output, HART® v7.5, or Modbus RTU protocols. When integrated into a DCS or SCADA environment, the system enables time-synchronized moisture trend analysis, alarm triggering based on dew point excursions (e.g., > –40 °C in Class 2 compressed air), and automated maintenance scheduling tied to filter replacement intervals. Full electronic as-built documentation—including P&ID reference tags, component serial numbers, and pressure drop curves—is provided in PDF and native AutoCAD formats for lifecycle asset management.

Applications

• Pharmaceutical compressed air systems requiring ISO 8573-1 Class 2 or Class 3 moisture compliance for Grade A/B cleanrooms
• Natural gas dehydration monitoring upstream of cryogenic processing units and LNG export terminals
• Semiconductor fab nitrogen purge lines where dew point stability below –70 °C prevents oxide layer formation
• Power plant instrument air networks supplying turbine control systems and pneumatic actuators
• Industrial nitrogen generators with integrated PSA or membrane separation modules
• Research laboratories conducting low-humidity gas standard generation and sensor validation studies

FAQ

Is the DPSS-6100 compatible with third-party dew point analyzers from Vaisala, Michell, or Panametrics?
Yes—the system is analyzer-agnostic and delivers conditioned sample gas meeting ISO 8573-6 requirements for dew point measurement integrity. Interface compatibility depends solely on mechanical connection (e.g., ¼” tube or NPT) and pressure/flow specifications.
Can the DPSS-6100 be used for oxygen service above 10 bar?
Oxygen-cleaned configurations are available upon request, including ASME B31.1-compliant cleaning, 100% solvent residue testing per CGA G-4.1, and non-lubricated valve actuation. Maximum working pressure remains 20 MPa, but design margin and inspection frequency must be reviewed per site-specific hazard analysis.
What is the recommended maintenance interval for the GP-09 filter element?
Under typical compressed air duty (ISO 8573-1 Class 4 particulate, oil aerosol ≤ 1 mg/m³), replacement is advised every 12 months or after 5,000 operating hours—whichever occurs first. Differential pressure monitoring (>0.3 bar ΔP) triggers immediate replacement.
Does York Instrument provide calibration certificates for individual components?
Yes—pressure regulators and needle valves are supplied with factory calibration certificates traceable to CNAS-accredited standards (equivalent to ISO/IEC 17025). Filter efficiency certification per ISO 12500-1 is included with each GP-09 unit.
Is explosion-proof (Ex d/Ex e) certification available for hazardous area installation?
The base DPSS-6100 manifold is non-electric and intrinsically safe. For Zone 1/2 installations, optional ATEX/IECEx-certified enclosure kits and purged housing solutions are available as add-on packages.