, an innovator in unattended process monitoring systems for gas
analysis, today launched its new TFS™ (Tunable Filter Spectroscopy)
platform with the introduction of Precisive™
, a compact hazardous-area compliant package for unattended
hydrocarbon process and natural gas analysis.

Precisive specializes in unattended, all-optical process monitoring
sensors for a variety of natural gas, LNG/LPG/BOG, combustion, emissions
and biogas applications; particularly where real-time hydrocarbon
speciation is demanded. Quantitative analysis of alkane gases
specifically C1 to C5 (methane, ethane, propane, butanes and pentanes)
and other light hydrocarbons are important in a variety of applications,
including BTU measurement and quality analysis of natural and biogas

“From the beginning when we founded the company in 2007, we worked very
closely with leaders in the natural gas industry to develop a product
that truly meets – and exceeds – their technical and harsh operational
requirements,” said Dr.
Vidi Saptari
, founder and president of Precisive, LLC.

The Precisive 5 will be launched at Pittcon
booth #3605 in Philadelphia, Pennsylvania, March 17-21, 2013.
Technical presentations will be delivered by Precisive staff at the
conference on March 17 “An Optical Hydrocarbon Sensor with Chromatograph
Speciation Capability“ (CEO, Duane Sword) and March 18 “A Multiplexed
Tunable Filter Spectrometer for Multi-Compound Gas and Liquid Analyses“
(Founder, Vidi Saptari, Ph.D).

Precisive 5: Real-time Monitoring for Unattended Gas Analysis

The predominant measurement technique until now has been Gas
Chromatography (GC) given the ability to separate individual compounds
with high selectivity, albeit its slow response and high infrastructure
requirements. For faster measurement requiring only a single heating
value measurement, residual oxygen calorimetry is often used. The
Precisive 5 gas analyzer requires no carrier-gases, no-calibration gases
and offers fast-response analytics without compromising accuracy,
repeatability, linearity or stability in the presence of interferences.
Faster-response multi-component analysis provides significant
cost-savings and efficiency gains in power-generation applications.

The Precisive TFS platform is an infrared absorption based on-line
monitoring system that can be configured for composition monitoring or
for trace-level measurements of hydrocarbons and VOCs (volatile organic
compounds). The Precisive 5 is the latest platform in a range of
solutions unveiled from Precisive including;

  • Precisive 1, OEM optical sensor module
  • Precisive 3, general purpose 3U/19” rack-mount product
  • Precisive 5, hazardous-area, CE, UL, and NEMA4X compliant product

“Precisive 5 has been specifically developed for remote unattended
process monitoring particularly where fast-response multi-component gas
analysis is required. We are delighted with the enthusiasm the market is
already showing for our unique approach,” added Duane
, CEO of Precisive, LLC.

The Precisive TFS Key Features and Benefits

  • Fast-Response: real-time measurements for on-line hydrocarbon
    processing and natural gas analysis. Measurements performed in
    seconds, compared to minutes with GC-based systems.
  • Multi-Component: multiple composition monitoring (ie C1 through
    C5 and CO2) from ppm to percent level calibrations.
  • ‘GC-like’ Speciation: monitoring of complex hydrocarbon
    compositions with significantly faster-response than traditional gas
    chromatography systems that require physical separation of compounds
    before analysis can begin.
  • Low-Maintenance: No requirement for instrument carrier gas, no
    requirement for calibration gases, nor instrument fuel gases. Greatly
    reduces cost, complexity, consumables and maintenance.
  • Ease of Deployment and Use: Modbus communications interface
    enables remote and unattended deployment without constant operator
    intervention. Novice users can become very proficient with minimal
  • Stability and Linearity: measurement linearity across the full
    range and stability in the presence of variations in operating
    temperatures, pressures, and humidity levels.
  • Compliant for Global Deployment: North America Division System
    (Class1Div2, Groups A/B/C/D, T4, Type 4X), North America Zone System
    (Class1, Zone2, Aex nA IIC T4, IP66, Ex nA IIC T4, IP66), European
    Zone System (ATEX EX II 3G n IIC T4 Gc), and worldwide certification
    to IECEx standards.

For more information:
+1 781 935 0600
[email protected]

About Precisive, LLC (

Precisive is a privately-held analytical instrument company,
headquartered in Boston, Massachusetts. Founded in 2007, the optical
sensors developed by Precisive are the first widely-deployed hydrocarbon
composition monitors that offer real-time unattended analytics with
hydrocarbon speciation capability equivalent to traditional gas
chromatography (GC) instruments yet with much lower cost of ownership
than a GC. Customers include power-generation (natural gas powered
turbines, fuel cells, combustion engines, boilers), hydrocarbon
processing and refining plants, biomethane and biomas gasification
facilities, industrial gas producers, and entities across the natural
gas supply chain (LNG/LPG/BOG, processing, transmission, storage,