Precisive® 5 Application Specific Gas Analyzers

The Precisive® Gas Analyzer is a real-time gas analyzer based on MKS' unique Tunable Filter Spectroscopy (TFS™) platform. The Precisive suite of products are calibrated for the measurement of a wide range of gases across multiple process industries. The real-time, continuous measurement capability provides immediate analysis ensuring control of critical process parameters.

Real-time, continuous measurement
No carrier gas or fuel gas requirements
Robust calibration
Flow-through sensor design
Compact, outdoor rated, low power
Hazardous Area Certified

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Description	Compatibility	Measurement Technique	Measurement Ranges	Repeatability
PRECISIVE-5-152Recipe 152, Gas Analyzer, Tunable Filter Spectroscopy, Liquid Natural Gas	UNIVERSAL	Tunable Filter Spectroscopy	Methane: 0-100% (C1) Ethane: 0-25% (C2) Propane: 0-25%(C3) n-Butane: 0-10% (nC4) iso-Butane: 0-10% (iC4) C5 (lumped): 0-5% (nC5 neoC5 iC5) Nitrogen: calculated balance BTU Calorific Value-CV (computed as per ISO 6976:1995) Wobbe Index (WI) (per ISO 6976: 2016)	Hydrocarbon channels: <±0.05% (absolute) CV & WI computation: <±0.05% (relative of reading)
PRECISIVE-5-154Recipe 154, Gas Analyzer, Tunable Filter Spectroscopy, Olefins	UNIVERSAL	Tunable Filter Spectroscopy	Ethylene: 0-100% Propylene: 0-100% Acetylene: 0-30% i-Butene: 0-20% 1-Butene: 0-20% Cis-2-Butene: 0-20% t-Butene: 0-20% Methane: 0-100% Ethane: 0-25% Propane: 0-25% iso-Butane: 0-50% n-Butane: 0-50% i-Pentane: 0-10% Balance channel reported (H2, N2, O2, CO2) BTU Calorific Value (CV) Wobbe Index (WI) (per ISO 6976: 2016)	Better than 0.1% (typically 0.05%)
PRECISIVE-5-155Gas Analyzer, Tunable Filter Spectroscopy, Olefins and HRVOC	UNIVERSAL	Tunable Filter Spectroscopy	CH4: 0-100% C2H6: 0-25% C3H8: 0-25% iC4H10: 0-50% nC4H10: 0-50% C3H6: 0-100% C2H4: 0-100% C2H2: 0-30% iso-C5H12: 0-10% 1-Butene: 0-20% cis-2-Butene: 0-20% trans-2-Butene: 0-20% isobutylene: 0-20% 1,3-Butadiene: 0-20% High Heating Value (HHV) Low Heating Value (LHV) Specific Gravity Wobbe Index (WI) (per ISO 6976: 2016)	Gas Channels: <0.1 mol% HHV, LHV & WI: <0.4% of Reading or <0.2 MJ/m³ (greater of) Specific Gravity: <0.05% of Reading
PRECISIVE-5-156Gas Analyzer, Tunable Filter Spectroscopy, Methane Number, Liquefied Natural Gas	UNIVERSAL	Tunable Filter Spectroscopy	CH4: 0-100% C2H6: 0-100% C3H8: 0-100% iC4H10: 0-10% nC4 + nC5 +nC6 (as nC4): 0-10% iC5 + neoC5 (as iC5): 0-10% Balance High Heating Value (HHV) Low Heating Value (LHV) Specific Gravity Wobbe Index (WI) (per ISO 6976: 2016) Methane Number	Gas Channels: <0.05 mol% HHV, LHV & WI: <0.2% of Reading or <0.1 MJ/m³ (greater of) Specific Gravity: <0.05% of Reading
PRECISIVE-5-162Gas Analyzer, Tunable Filter Spectroscopy, Flare Stack Gas	UNIVERSAL	Tunable Filter Spectroscopy	Methane: 0-100% Ethane: 0-25% Ethylene: 0-100% iso-Butane: 0-10% n-Butane + n-Pentane: 0-10% iso-Pentane: 0-10% 1-Butene: 0-10% 1-Hexene: 0-10% n-Hexane: 0-10% cis-2-Butene: 0-10% trans-2-Butene: 0-10% balance channel reported (H2, N2, O2, CO2) BTU Calorific Value-CV (computed as per ISO 6976:1995) Wobbe Index (WI) (per ISO 6976: 2016)	Better than 0.1% (typically 0.05%)
PRECISIVE-5-165Gas Analyzer, Tunable Filter Spectroscopy, Liquefied Petroleum Gas	UNIVERSAL	Tunable Filter Spectroscopy	C2H6: 0-25% C3H8: 0-100% iC4H10: 0-100% nC4 + nC5 +nC6 (as nC4): 0-100% C3H6: 0-10% C2H4: 0-10% iC5 + neoC5 (as iC5): 0-10% Balance High Heating Value (HHV) Low Heating Value (LHV) Specific Gravity Wobbe Index (WI) (per ISO 6976: 2016)	Gas Channels: <0.05 mol% HHV, LHV & WI: <0.2% of Reading or <0.1 MJ/m³ (greater of) Specific Gravity: <0.05% of Reading
PRECISIVE-5-242BGas Analyzer, Tunable Filter Spectroscopy, Natural Gas Pipelines	UNIVERSAL	Tunable Filter Spectroscopy	CH4: 50-100% C2H6: 0-20% C3H8: 0-10% iC4H10: 0-5% nC4H10: 0-5% iC5 + neoC5 (as iC5): 0-2% n-Hexane: 0-2% CO2:0-20% Balance High Heating Value (HHV) Low Heating Value (LHV) Specific Gravity Wobbe Index (WI) (per ISO 6976: 2016)	nC6, nC4+nC5 Channels: <0.1 mol%; All others: <0.05% HHV, LHV & WI: <0.3% of Reading or <0.15 MJ/m3 (greater of) Specific Gravity: <0.06% of Reading
PRECISIVE-5-253Gas Analyzer, Tunable Filter Spectroscopy, Acid and Sour Gas	UNIVERSAL	Tunable Filter Spectroscopy	CH4: 0-100% C2H6: 0-25% C3H8: 0-25% iC4H10: 0-10% nC4 + nC5 (as nC4): 0-10% iC5 + neoC5 (as iC5): 0-10% n-Hexane: 0-5% H2S: 0-50% CO2: 0-50% Balance High Heating Value (HHV) Low Heating Value (LHV) Methane Number	Gas Channels: <0.1 mol% HHV & WI: <0.3% of Reading or <0.15 MJ/m³ (greater of) Specific Gravity: <0.06% of Reading
PRECISIVE-5-271Gas Analyzer, Tunable Filter Spectroscopy, Syngas Composition	UNIVERSAL	Tunable Filter Spectroscopy	CH4: 0-25% C2H6: 0-25% C2H4: 0-20% C2H2: 0-5% CO: 0-50% CO2: 0-50% Balance High Heating Value (HHV) Low Heating Value (LHV) Specific Gravity Wobbe Index (WI) (per ISO 6976: 2016)	<strong>Gas channels:</strong> < 0.15 mol% HHV, LHV & WI: <0.4% of Reading or <0.2 MJ/ m³ (greater of) Specific Gravity: <0.1% of Reading
PRECISIVE-5-282Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Calorific Value, Wobbe Index	UNIVERSAL	Tunable Filter Spectroscopy	CH4: 50-100% C2H6: 0-20% C3H8: 0-10% C4+: 0-10% CO2: 0-20% Balance High Heating Value (HHV) Low Heating Value (LHV) Specific Gravity Wobbe Index (WI) (per ISO 6976: 2016) Methane Number	Gas Channels: <0.05 mol% HHV, LHV & WI: <0.2% of Reading or <0.1 MJ/m³ (greater of) Specific Gravity: <0.05% of Reading

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Notes:

Additional configurations are available. Contact MKS for assistance

Specifications

Type
Real-time Gas Analyzer
Measurement Technique
Tunable Filter Spectroscopy (TFS™)
Zero Drift
Not to exceed 0.2% per month; Maximum of 0.5% throughout life of bulb (~36 months)
Sample Pressure
0.1-5 psig
Flow Rate
0.1-2 L/min
Contact MKS for higher or custom ranges
Sample Cell
0.35m pathlength, 100mL volume

Weight
12kg (25.8lbs)
Power Requirements
24 VDC or 100 - 240 VAC
Operating Temperature
-20 to 50°C
-20 to 48°C (ATEX)
Communication
Modbus over Ethernet or RS485
Dimensions
Width: 17.25 in. (438.2 mm)
Depth: 6.60 in. (167.6 mm)
Height: 11.25 in. (285.8 mm)
Certifications
Class I, Division2, Group A, B, C and D, T4
Class I, Zone 2, Aex nA nC IIC T4 Gc
Ex nA nC nL IIC T4 Gc
Sira 13ATEX4316
Ex ec nC IIC T4 Gc
IECEx CSA 14.0049
Ex ec nC IIC T4 Gc
IP66, Type 4

Features

Precisive TFS™ Light Absorption Spectroscopy Schematic

The Precisive TFS™ (Tunable Filter Spectrometer) sensor platform consists of a light source, a sample cell (for gases, liquids or solids), a wavelength separating element (spectrometer) and a photo-detector. The wavelength separating element "slices" the wavelength components of the broadband light source which then interacts with the sample molecules. Some of the wavelength components are absorbed and some are transmitted through without any absorption.

Simplified schematic of light absorption spectroscopy

Advanced Spectral Decomposition Algorithm

Precisive TFS™ Tunable Filter Spectrometers use an advanced spectral decomposition algorithm. The resulting spectrum is called absorption spectrum, which acts as "fingerprints" which are used to identify the sample components and/or quantify the composition of the sample.

Light absorption spectroscopy with advanced spectral decomposition algorithm

Resources

Precisive® 5 Application Specific Gas Analyzers

Notes:

Specifications

Features

Precisive TFS™ Light Absorption Spectroscopy Schematic

Advanced Spectral Decomposition Algorithm

Resources

Literature

Other

Application Notes

Technical Papers

Technical Notes