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precisive tfs tunable filter spectrometer

Overview

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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Products

Compare	Description	Compatibility	rankScore	Measurement Technique	Measurement Ranges	Repeatability	Availability
PRECISIVE-5-152 Recipe 152, Gas Analyzer, Tunable Filter Spectroscopy, Liquid Natural Gas Contact Us	PRECISIVE-5-152 Recipe 152, Gas Analyzer, Tunable Filter Spectroscopy, Liquid Natural Gas	UNIVERSAL	1.0	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)	Contact Us
PRECISIVE-5-154 Recipe 154, Gas Analyzer, Tunable Filter Spectroscopy, Olefins Contact Us	PRECISIVE-5-154 Recipe 154, Gas Analyzer, Tunable Filter Spectroscopy, Olefins	UNIVERSAL	1.0	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%)	Contact Us
PRECISIVE-5-155 Gas Analyzer, Tunable Filter Spectroscopy, Olefins and HRVOC Contact Us	PRECISIVE-5-155 Gas Analyzer, Tunable Filter Spectroscopy, Olefins and HRVOC	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-156 Gas Analyzer, Tunable Filter Spectroscopy, Methane Number, Liquefied Natural Gas Contact Us	PRECISIVE-5-156 Gas Analyzer, Tunable Filter Spectroscopy, Methane Number, Liquefied Natural Gas	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-162 Gas Analyzer, Tunable Filter Spectroscopy, Flare Stack Gas Contact Us	PRECISIVE-5-162 Gas Analyzer, Tunable Filter Spectroscopy, Flare Stack Gas	UNIVERSAL	1.0	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%)	Contact Us
PRECISIVE-5-165 Gas Analyzer, Tunable Filter Spectroscopy, Liquefied Petroleum Gas Contact Us	PRECISIVE-5-165 Gas Analyzer, Tunable Filter Spectroscopy, Liquefied Petroleum Gas	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-242B Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Pipelines Contact Us	PRECISIVE-5-242B Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Pipelines	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-253 Gas Analyzer, Tunable Filter Spectroscopy, Acid and Sour Gas Contact Us	PRECISIVE-5-253 Gas Analyzer, Tunable Filter Spectroscopy, Acid and Sour Gas	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-271 Gas Analyzer, Tunable Filter Spectroscopy, Syngas Composition Contact Us	PRECISIVE-5-271 Gas Analyzer, Tunable Filter Spectroscopy, Syngas Composition	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-282 Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Calorific Value, Wobbe Index Contact Us	PRECISIVE-5-282 Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Calorific Value, Wobbe Index	UNIVERSAL	1.0	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	Contact Us
PRECISIVE-5-283 Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Calorific Value, Wobbe Index, Methane Number, Metering Contact Us	PRECISIVE-5-283 Gas Analyzer, Tunable Filter Spectroscopy, Natural Gas Calorific Value, Wobbe Index, Methane Number, Metering	UNIVERSAL	1.0	Tunable Filter Spectroscopy	CH4: 50-100% C2H6: 0-20% C3H8: 0-10% iC4H10: 0-5% nC4 + nC5 +nC6 (as nC4): 0-5% iC5 + neoC5 (as iC5): 0-2% 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	Contact Us

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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

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

Simplified schematic of light absorption spectroscopy

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.

Advanced Spectral Decomposition Algorithm

Light absorption spectroscopy with 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.