Areas subject to explosion hazards, classified by zones
The instrument is intended for the use in explosion-hazard areas of Zone 0, Zone
1 or Zone 2 or in mines at risk due to fire damp. It is intended for use within a
temperature range of –20 °C to +50 °C, and for areas in which gases of explo-
sion groups IIA, IIB or IIC and temperature class T3 or T4 (depending on the bat-
teries and rechargeable battery) may be present. If used in mines, the instrument
is only to be used in areas known to have a low risk of mechanical impact.
Areas subject to explosion hazards, classified by divisions.
The instrument is intended for use in explosion-hazard areas according to Class
I & II, Div. 1 or Div. 2 within a temperature range of –20 °C to +50 °C, and for
areas where gases or dusts of groups A, B, C, D, E, F, G and temperature class
T3 or T4 may be present (depending on the rechargeable battery and batteries).
!
WARNING
CSA requirement: Measured values over the full scale value may indicate an
explosive atmosphere.
Only applies for class II certification. CSA standard C22.2 no. 152 does not con-
tain any requirements for class II hazard areas. Therefore this device was not
tested for class II by the CSA. The sensor may become blocked and not meas-
ure the gas correctly or not warn the user that gas measurement is not possible.
!
WARNING
CSA requirement: The sensitivity must be tested every day before first use
using a known concentration of the gas being measured corresponding to
25 to 50 % of the full concentration value. The accuracy must be 0 to +20 % of
the daily value. The accuracy may be corrected via calibration.
CSA requirement: Only the combustible gas detection portion of this
instrument has been assessed for performance.
The instrument has not been classified by the CSA for use in mines.
Tests and Approvals
en
29