Kaiser Raman Pilot-E Probe for LNG

Optimized design for in situ process analyses of cryogenic liquids

The design of the Pilot-E probe for LNG has been optimized for in situ process analyses of cryogenic liquids.  Analyzing LNG as a cryogenic liquid eliminates the errors associated with sampling systems such as vaporizers, which are typically required with traditional process analyzers, resulting in  greatly improved certainty of the value of LNG transacted during custody transfer.

The Pilot-E probes can be supplied, marked, and certified to the ATEX directive, North American (CSA) hazard area, or IECEx safety requirements. The combination of the Pilot-E probe for LNG and Kaiser Raman analyzers (Raman Rxn4 for LNG, Optograf Analyzer) yields a powerful process analytical tool for in situ composition analysis of LNG and mixed refrigerants using quantitative Raman spectral analysis.

Let’s Talk

Additional Components

Kaiser Raman Rxn4 LNG

Kaiser Raman Rxn4 Analyzer for LNG

Robust, versatile, and reliable analyzer for LNG custody transfer.

More Information

Optograf Gas Analyzer front view

Kaiser Raman Optograf analyzer

Industry-leading, turn-key, laser-based process analyzer.

More Information

Kaiser Raman Calibration Accessory product HCA

Calibration Accessory

Easy-to-use calibration protocol for quantitative spectral analysis.

More information


  • Probe constructed to individual site requirements
  • Sealed probe design
  • Integrated “Laser on” indicator
  • One in / One out fiber optics
  • Hazardous area certified: CSA, ATEX, IECEx

Field of application

  • Baseload export custody transfer
  • Baseload import custody transfer
  • Truck loading
  • Bunkering
  • LNG rundown to storage tanks
  • Mixed refrigerant optimization

Features and Specifications

Measuring principle
Raman spectroscopy

Laser wavelength
532 nm, 785 nm

Spectral coverage
150-3425 cm-1 (532 nm)
150-3425 cm-1 (785 nm)

Maximum laser power into probe head

Sample Interface
Temperature, probe tip: –196 °C to -70 °C
Temperature ramp: ≤6 °C/min
Pressure: ≤ 370 psia (SS 316L); ≤ 650 psia (Alloy C276)

Body and wetted materials
Body: 316L stainless steel (standard); C276 Alloy (optional)
Window: High-purity sapphire

Fiber optic cable
Design: PVC jacketed, proprietary construction
Connections: proprietary electro-optic
Temperature: –40 to 70 °C
Length: 5000 mm (16.4 ft) standard, custom lengths available
Minimum bend radius: 152.4 mm (6 in)

Length (mm)
Up to 3048

Diameter (mm)

Documents/ Manuals/Software


bIO-PRO KS 785 Installed Lab with operator


2020 Pharma Innovation Award

Our Kaiser Raman bIO-PRO, KS bioprocessing probe was recently selected as a 2020 Pharma Innovation Award winner by Pharma Manufacturing Magazine!

The Kaiser Raman bIO-PRO, KS probe provides fast, accurate measurement of key bioprocess variables from lab-to-process. It is an exciting advancement in our already well-established Kaiser Raman bioprocess product portfolio.

Read award announcement

Two employee with proper PPE and stainless steel Bio Reactor_resized


Advanced bioprocess control

Learn how Kaiser Raman technology helped Nicro eliminate time-consuming offline sampling in favor of real-time monitoring of critical parameters in fermentation processes.

Read success story

2021 Coblentz Society William Wright award recipient, Dr. Ian Lewis


2021 Williams-Wright Award

Dr. Ian R. Lewis, Director of Marketing at Kaiser Optical Systems, has been named the 2021 Williams-Wright Award recipient by The Coblentz Society for his significant contributions to vibrational spectroscopy. The award was presented during the 2021 Pittcon Conference & Expo.

Read award announcement