CO2 Meter SAN-20 Посібник користувача - Сторінка 6

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Setting Man down alarm function on/off. User presses the power

A ON/ AOFF

button

(prohibiting Man down alarm).

User presses the power button

3. SAN-20 Calibration

This device features one method for calibration: Ambient Air (20.9% Oxygen). This should be

performed in fresh outdoor air. While the device is on, press and hold the temperature unit

button for 5-10 seconds, the monitor will enter the configuration menu. The temperature unit

button can be used to cycle through the configuration and calibration options. When the monitor

displays "AIR" press and hold the power button to start the calibration. The Monitor will display

"IP" during the calibration.

4. Alarm Threshold

There are high and low alarm thresholds in SAN-20. Both high and low alarm has twelve

thresholds: 15.0%, 15.5%, 16.0%, 16.5%, 17.0%, 17.5%, 18.0%, 18.5%, 19.0%, 19.5%, 23.0%,

and 23.5%. Obviously, high alarm threshold should not less than low threshold. They can be

same alarm level.

The SAN-20 is equipped with audible, visual and vibration alarms to alert users when the

ambient oxygen concentration exceeds either of the two factory preset alarm levels:

•

Danger Low Oxygen Alarm: LED will flash and audible alarm will sound 3x / sec.

•

Warning High Oxygen Alarm: LED will flash and audible alarm will sound 2x / sec.

To alert users in noise environment, an inner vibrator will vibrate at 1Hz in both Oxygen Alarms.

Normal atmosphere contains between 20.8%and 21% oxygen. OSHA defines any atmosphere

that contains less than 19.5% oxygen as "oxygen deficient" and any atmosphere that contains

more than 23.5 percent oxygen as "oxygen enriched."

ATTENTION! - If a Warning or Danger Alarm is triggered while using the

instrument as a safety monitor, leave the area and seek fresh air immediately.

Remaining on site under such circumstances can cause serious impairment or

5. Automatic Atmospheric Pressure Compensation

The O2 measurement is affected by atmospheric pressure or altitude changing. When users are

at high altitude, compensation should be made to assure maximum monitor accuracy.

This device has automatic atmospheric pressure compensation for O2 concentrations by means

of a built-in barometric pressure sensor.

6. Man down alarm

to switch "A ON" (allowing Man down alarm) or "AOFF"

even lead to death.

to exit the menu status.

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