10
Operating the EntryRAE
1.0 The monitor must be in Programming Mode
for calibration.
1.1 Press and hold @ and
N
for 3 seconds to
enter Programming.
1.2 Password Enabled Monitors.
Calibration
While EntryRAEs are calibrated prior to leaving the factory, temperature
extremes and/or shocks during shipment can cause sensor drift. Therefore,
the accuracy of any newly purchased RAE Systems monitor should be
tested by exposing the sensor(s) to known concentration calibration gas
before the monitor is used or put into service. For maximum safety, the
accuracy of the monitor should be checked by exposing the sensor(s) to
known concentration calibration gas before each day’s use.
Les indications de toute instruments de RAE Systems doit être testé
en exposant l’instrument à une concentration de gaz connue par une
procédure dietalonnage avant metre en service l’instrument pour la
première fois. Pour une sécurité maximale, la sensibilité du EntreRAE doit
être vérifie en exposant l’instrument à une concentration de gaz connue
par une procédure diétalonnage avant chaque utilisation journaliere.
Information regarding sensor expiration is listed in Technical Note TN-
114, available at www.raesystems.com.
Calibration Equipment
The sensors are calibrated using both fresh air and calibration (span)
gas. The EntryRAE span gas mixtures are fi xed. To calibrate an
EntryRAE, the following items are needed:
A. A cylinder of four-gas mix containing:
s
50% LEL methane
s
20.9% O
2
s
10 ppm H
2
S
s
50 ppm CO
B. A cylinder of 100 ppm isobutylene.
C. A calibration adapter to connect the monitor to the outlet of the gas
cylinder.
Calibration Procedure
The calibration procedure is broken down into three steps. All steps
should be performed whenever calibration is needed.
Step One: Enter Programming Mode
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