General Information - testo gas detector Bedienungsanleitung

General Information

2
General Information
Please read this document through carefully and familiarise yourself with the operation of
the product before putting it to use. Keep this documentation to hand so that you can
refer to it when necessary.
Symbols and what they mean
Symbol Meaning
Warning text: Danger!
Danger to life
if the precautionary measures
specified are not taken.
Warning text: Warnung!
Serious physical injuries could occur if the precautionary
measures specified are not taken.
Warning text: Caution!
Light physical injuries or damage to property
could occur if the precautionary
measures specified are not taken.
Important information.
Text
Display text
Definitions and Units
ppm = parts per million:
Common unit to describe gas concentrations. 1ppm corresponds to 1cm³ Gas in 1m³
air. 1ppm = 0.0001Vol.%, 1000ppm = 0.1 Vol.%.
Lower explosion limit:
At certain gas concentrations in the air, combustible gases reach a point at which there
is an explosion if exposed to ignition sources. This lower explosion limit (sometimes
referred to as lower ignition limit) is reached at different gas concentrations, depending
on the type of gas. Methane has a lower ignition limit of 4.0 - 4.4Vol.% (= 40 000 to
44 000ppm).
Remarks
Please read warning carefully and take the
precautionary measures specified.
Please read warning carefully and take the
precautionary measures specified.
Please read warning carefully and take the
precautionary measures specified.
Pay particular attention.
-