Ranges and Uncertainties

  range calibration and measurement capability (CMC) *
component amount fraction (% mol/mol) amount fraction (% mol/mol)
nitrogen 0.1 to 1.8 1.10% relative + 0.0065
methane 79 to 100 0.035
ethane 0.1 to 4 0.30% relative + 0.001
4 to 14 0.05% relative + 0.010
propane 0.1 to 4 0.15% relative + 0.0015
iso-butane 0.02 to 1.3 0.25% relative + 0.0010
n-butane 0.02 to 1.3 0.25% relative + 0.0010
iso-pentane 0.01 to 0.16 0.50% relative + 0.0002
n-pentane 0.01 to 0.16 0.50% relative + 0.0002
* The calibration and measurement capability is based on a standard uncertainty multiplied by a coverage factor k=2, providing a level of confidence of approximately 95%. The uncertainty evaluation has been carried out in accordance with UKAS requirements

This table was reviewed on 17 May 2021 and refers to the ISO 17025 scope (Issue No. 054) for EffecTech in the UK only.

Probe Technical Specifications

The EffecTech cryostat has the following requirements for the probe:

  • Minimum probe length is 29 inches / 73.66cm.
  • Probe diameter must be 1 inch / 2.54cm.

A KF-50 to compression fitting is connected to the probe to ensure that 27 inches (68.58cm) of the probe length is achieved.