Gas Chromatograph model AccuChrome™.

AccuChrome is the single most accurate gas chromatograph when monitoring heavier hydrocarbon samples. The AccuChrome, in addition to determining C6+ and C7+, can determine C8+ and C9+, as well as H2, and also O2 by incorporating additional modules. - Accurate calorific value measurement - Fast response to process variations - ATEX / IECEx certified without purging - Measures up to 50% hydrogen for blending applications - Can monitor up to 8 sample streams - Incorporates robust sample conditioning system for NGL samples Extended analysis - Measurement of hydrocarbons C9 - C12 - ≤ 50% of hydrogen Hazardous area certified - Class I Division 2 and Division 1 - ATEX / IECEx Zone 1 Low maintenance - Valves rated for 1,000,000,000 injections Fast response - Typical 4-minute analysis sequence - Fast and sensitive NEMS detector The new NEMS method offers speed and sensitivity: Nanoelectromechanical sensor (NEMS) When measuring hydrocarbons heavier than C7, AccuChrome™ uses a NEMS detector. Ironically, NEMS becomes more sensitive for heavier samples and offers 1 ppm sensitivity C7 to C12. The NEMS detector is used in parallel with the standard TCD, offering an unmatched package for extended natural gas analysis.  

• Compounds: Btu, specific gravity, Wobbe index, oxygen, CO, C6 + – C12 +, N2, methane, CO2, ethane, H2S, propane, isobutane, n-butane, iso-pentane, n-pentane, neo-pentane, Hydrogen.
• Sample handling: vapor, vaporizable liquid and liquid samples
• Accuracy: ± 0.25% Btu / scf per 1,000 Btu / scf or ± 0.5% at 2% F.S. [Application specific].
• Repeatability: ± 0.25% Btu / scf per 1,000 Btu / scf or ± 0.5% at 2% F.S. [Application specific].
• Sensitivity: 200 ppm C7 +
• Method(s): Thermal conductivity detection (TCD) for compounds lighter than C7+.
• Nanoelectromechanical sensor (NEMS) for compounds heavier than C7+.
• Response time: 4 minutes (application specific)
• Carrier gas: helium or hydrogen at 4.1 bar, 20 cc / min [60 psi].
• Analog outputs: 4 4-20 mA outputs (loop or self-powered)
• Analog inputs: 3 4-20 mA inputs [RTD, 4-20 mA, transducer].
• Modbus: TCP / IP, RS232 or RS485
• Digital outputs: 4 x SPDT relays
• Digital inputs: 4 inputs
• Remote Ethernet
• Analyzer display: color LCD with extendable keypad
• Ambient conditions: -4° to 140°F [-20 to 60°C] at 0 to 95% relative humidity without condensation
• -20 to 50°C [-4° to 122°F] with NEMS
• Dimensions: 686 x 838 x 318 mm / 838 mm high with VAC power supply // 838 x 1219 x 318 mm with NEMS
• Power supply: 24 VDC or 90 to 240 VAC
• Power consumption: 100 watts start-up, 50 watts operation // 150 watts with NEMS

Model	Class I Zone 1
C9 Capacity	No
Case material	Cast aluminum
Enclosure Rating	NEMA 3, IP54
Carton weight	54.4 kg
Area classification	II 2 G Ex db [ia Ga].
	IIB + H2 T3 Gb
	Tamb -20 ≤ Ta ≤ 60C

Also for: Class I Division 2 and Class I Division 1

Natural Gas
Btu, specific gravity, Wobbe index, oxygen, CO, C6+ to C12+, N2, methane, CO2, ethane, H2S, propane, isobutane, n-butane, iso-pentane, n-pentane, neo-pentane, hydrogen.

Consult