sfm::Scaling Struct Reference

Scale factor / offset / unit for one gas lookup table (data sheet §4.3.6). More...

#include <sfm_types.hpp>

Public Member Functions
constexpr float	FullScaleFlow () const noexcept
	Full-scale flow in the device unit (SFx6000; 0 when not reported).
constexpr float	ToFlow (int16_t raw) const noexcept
	raw → flow in the device unit (slm for SFM4300).

Public Attributes
int16_t	scale {1}
	counts per flow unit (SFM4300: 1000 per slm)
int16_t	offset {0}
	counts at zero flow (SFM4300: −28672)
uint16_t	unit {0}
	unit code (SFM4300: 0x0148 = slm @ 20 °C)
int16_t	full_scale_raw {0}
	SFx6000 only: full-scale flow, raw counts.
uint16_t	gas_id {0}
	SFx6000 only: SEMI gas ID.
bool	valid {false}

Detailed Description

Scale factor / offset / unit for one gas lookup table (data sheet §4.3.6).

Member Function Documentation

FullScaleFlow()

constexpr float sfm::Scaling::FullScaleFlow ( ) const

inlineconstexprnoexcept

Full-scale flow in the device unit (SFx6000; 0 when not reported).

ToFlow()

constexpr float sfm::Scaling::ToFlow ( int16_t  raw ) const

inlineconstexprnoexcept

raw → flow in the device unit (slm for SFM4300).

Member Data Documentation

full_scale_raw

int16_t sfm::Scaling::full_scale_raw {0}

SFx6000 only: full-scale flow, raw counts.

gas_id

uint16_t sfm::Scaling::gas_id {0}

SFx6000 only: SEMI gas ID.

offset

int16_t sfm::Scaling::offset {0}

counts at zero flow (SFM4300: −28672)

scale

int16_t sfm::Scaling::scale {1}

counts per flow unit (SFM4300: 1000 per slm)

unit

uint16_t sfm::Scaling::unit {0}

unit code (SFM4300: 0x0148 = slm @ 20 °C)

valid

bool sfm::Scaling::valid {false}

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The documentation for this struct was generated from the following file:

• inc/sfm_types.hpp