MSA ALTAIR 4 Manual De Instrucciones página 475

MSA
3.6 Function Tests on the Instrument
Alarm Test
Turn on the instrument. Verify that:
• all LCD segments are activated momentarily
• alarm LEDs flash
• horn sounds briefly
• vibrating alarm triggers briefly.
3.7 Safe LED
The instrument is equipped with a green "SAFE LED". This green SAFE
LED flashes every 15 seconds under the following conditions:
• the SAFE LED feature is enabled
• instrument is in Measurement Mode (Normal Operation)
• combustible reading is 0% LEL or 0.00%CH
• Oxygen (O
• Carbon Monoxide (CO) reading is 0 ppm
• Hydrogen Sulphide (H
• no gas alarms are present (low or high)
• instrument is not in Low Battery warning or alarm
• CO, H
3.8 Bump Test
Attention!
Perform a Bump Test before each day's use to verify proper
instrument operation. Failure to perform this test can result in
serious personal injury or death.
This test quickly confirms that the gas sensors are functioning. Perform a
full calibration periodically to ensure accuracy and immediately if the
instrument fails the Bump Test. The Bump Test can be performed using the
procedure below or automatically using the GALAXY Test Stand.
It is required that the instrument's sensitivity be tested before each day's
use on a known concentration of methane equivalent to 25-50% of full scale
concentration. Accuracy must be within 0 to +20% of actual. Correct
accuracy by performing the calibration procedure within this manual.
GB
DECLARATION OF CONFORMITY CONTENTS
) reading is 20.8%
2
S) reading is 0 ppm or 0 mg/m³
2
S, STEL and TWA readings are 0 ppm or 0 mg/m³.
2
ALTAIR 4 - Operating Manual 10088160/00 Y-HLR
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