AreaRAE Plus & AreaRAE Pro User’s Guide 
6 
 
 
WARNINGS 
 
Read Before Operating 
 
This manual must be carefully read by all individuals  who have or will have the responsibility  of using, 
maintaining,  or servicing this product. The product will perform as designed only if it is used, maintained, 
and serviced in accordance with the manufacturer’s instructions. 
 
CAUTION! 
Never operate the monitor when the cover is removed. Remove the monitor  rear cover or battery only in 
an area known to be non-hazardous. 
 
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. 
 
TOUTE LECTURE RAPIDE ET POSITIVE, SUIVIE D’UNE BAISSE SUBITE OU ERRATIQUE 
DE LA VALEUR, PEUT INDIQUER UNE CONCENTRATION DE GAZ HORS GAMME DE 
DÉTECTION QUI PEUT ÊTRE DANGEREUSE 
ONLY THE COMBUSTIBLE GAS DETECTION PORTION OF THIS INSTRUMENT HAS 
BEEN ASSESSED FOR PERFORMANCE. 
UNIQUEMENT, LA PORTION POUR DÉTECTER LES GAZ COMBUSTIBLES DE CET 
INSTRUMENT A ÉTÉ ÉVALUÉE. 
 
CAUTION:  BEFORE EACH DAY’S USAGE, SENSITIVITY OF THE LEL SENSOR MUST BE 
TESTED ON A KNOWN CONCENTRATION OF METHANE GAS EQUIVALENT TO 20 TO 50% 
OF FULL-SCALE CONCENTRATION.  ACCURACY MUST BE WITHIN 0 AND +20% OF 
ACTUAL.  ACCURACY MAY BE CORRECTED BY CALIBRATION PROCEDURE. 
ATTENTION:  AVANT CHAQUE UTILISATION JOURNALIERE, VERIFIER LA SENSIBILITE 
DU CAPTEUR DE LIE AVEC UNE CONCENTRATION CONNUE DE METHANE EQUIVALENTE 
DE 20 A 50% DE LA PLEINE ECHELLE.  LA PRECISION DOIT ETRE COMPRISE ENTRE 0 ET 
20% DE LA VALEUR VRAIE ET PEUT ETRE CORRIGEE PAR UNE PROCEDURE 
D’ETALONNAGE. 
 
CAUTION: HIGH OFF-SCALE READINGS MAY INDICATE AN EXPLOSIVE 
CONCENTRATION. 
           
ATTENTION: DES LECTURES HAUTES ET HORS D’ECHELLE PEUVENT INDIQUER DES 
CONCENTRATIONS DE GAZ INFLAMMABLES 
 
CAUTION: SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY. 
 
Note: Users are recommended to refer to ISA-RP12.13, Part II-1987 for general information  on 
installation,  operation, and maintenance of combustible gas detection instruments. 
 
The AreaRAE2 multi-gas detector must be calibrated if it does not pass a bump test, or at least once every 
180 days, depending on use and sensor exposure to poisons and contaminants.