RequestSF6 Lasercheck P3:FH
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SF6 Lasercheck P3:FH

SF6 Laser-
SF6 Lasercheck P3:FH | Sub-ppb Containment Test System

SF6 LASERCHECK P3:FH is designed for tracer gas containment testing using SF6.


  • Overview
  • Principle of operation
  • System Characteristics
  • Features
  • Applications
  • Delivery Scope

As a light source, the SF6 LASERCHECK P3:FH features a laser specially developed for this application, which illuminates the internal detection chamber to determine the SF6 concentration.

Its novel principle of measurement (patent pending) not only
enables SF LASERCHECK P3:FH to determine very low gas
concentrations, but also makes it suitable for use in any

Since the temperature of the test specimens has no influence on the measuring process, the SF6 LASERCHECK P3:FH test system reliably delivers consistent results even under harsh environmental conditions such as encountered in industrial production. Due to the system’s fully automatic operation, no operator-dependent influences occur.

SF6 LASERCHECK P3:FH uses an advanced principle of photoacoustic gas detection (patent pending), reaching a detection
threshold as low as 6 ppb (parts per billion) at extremely low
cross sensitivity and excellent long-term stability.

A gas sample is transferred into the instrument’s measuring
chamber, where it is exposed to the pulsed beam of a
wavelength-optimized CO
2 laser. The laser light is partially
absorbed by the SF
6 molecules, turning part of its energy into
heat. Due to the pulsation of the beam, a cyclic expansion of the
gas can be observed in the presence of SF
6 molecules, which is
detected as sound waves by highly sensitive microphones. The
intensity of these sound waves is in a fixed ratio with the SF
concentration contained in the sample gas.

Unlike conventional absorption spectroscopy, the advanced
principle used in SF6 LASERCHECK P3:FH makes it possible to
determine, and compensate for, a beginning contamination of
the internal measuring chamber. This ability accounts for its
excellent long-term stability of measurement.

SF6 LASERCHECK P3:FH is composed of a base unit, comprising
the measuring cell, laser, vacuum pump and a controller.

A WIN PC (Win 7,8,10) running a custom control software serves
as the man-machine interface. This software controls the
measuring process, visualizes its results, and processes user
inputs such as parameter settings. It also stores resulting data for

  • Measuring Range HIGHsens 0.3 ppb – 3 ppm SF6
  • Measuring Range Standard 6 ppb – 30 ppm SF6
  • Unaffected by humidity and temperature
  • Built-in self-diagnostic module
  • Suitable for use under harsh environmental conditions
  • Fully automated operation
  • Serial interface (RS 232) or Profibus DP
  • CO2 laser
  •  Fume Hood tracer gas containment testing with world leading ppb sensitivity and data logging according to ASHRAE 110-2016 / DIN EN 14175
  • 1x SF6 LASERCHECK p3:FH with PELI Protector Case
  • 1x Control and measurement data processing software
  • 1x Sample gas pump
  • 1x Control computer
  • 1x User manual (English)


Technical Data

The technical data at a glance

  • Measuring range
    0,3 ppb ... 3 ppm SF6 - HIGHsens
    6,0 ppb ... 30 ppm SF6 - Standard
  • Resolution
    0,3 ppb - HIGHsens
    1,0 ppb - Standard
  • Measuring period
    3 ... 10 s
  • Laser class
    1; no protective measures required
  • Self-diagnostics
    Automatic, continuous
  • Compressed air supply
    5.... 8 bar, dry, clean, oil-free
  • Temperature
    Operation: 10°C... 40°C
    Storage: -25°C... 60°C
  • Interfaces
    RS232 or Profibus DP
  • Protection class
  • Dimensions
    19" x 6 U x 520 mm (Analyzer)
  • Weight
    approx. 30 kg (Analyzer)
  • Show all


For further supporting documentation please see below.

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