QRAE II User Guide
Page 4
WARNINGS
Use only RAE Systems rechargeable battery pack part number 020-3402-000, or alkaline
battery pack part number 020-3403-000. Use only DURACELL MN1500 batteries with
alkaline battery pack. This instrument has not been tested in an explosive gas/air
atmosphere having an oxygen concentration greater than 21%. Substitution of
components may impair suitability for intrinsic safety. Recharge batteries only in non-
hazardous locations. Do not connect the serial communication port in a hazardous
location.
STATIC HAZARD:
Clean only with a damp cloth.
For safety reasons this equipment must be operated and serviced by qualified personnel
only. Read and understand instruction manual completely before operating or servicing.
All newly purchased RAE Systems instruments should be bump tested by exposing the
sensor(s) to known concentrations of calibration gas.
The monitor should be calibrated if it does not pass a bump test, but no less than every 6
months, depending on use and exposure to gas and contamination, and its operational
mode.
Bump test is defined as an exposure to gas that triggers the lowest alarm.
• Calibration intervals and bump test procedures may vary due to national legislation.
• When using the QRAE II with an H
2
S sensor, RAE Systems recommends using RAE
calibration gas cylinders with a 4-gas mix containing 10 ppm H
2
S, 50 ppm CO, 50%
LEL Methane, and 18% Oxygen.
• Any rapid up-scale reading followed by a declining or erratic reading may indicate a gas
concentration beyond upper scale limit which may be hazardous.
.
