Rae QRAE PLUS PGM-2000, Руководство по эксплуатации и техническому обслуживанию

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PROGRAMMING
4-19
6) Backlight Mode – manual or automatic. If manual mode is
chosen, pressing the [N/-] key will turn on the LCD
backlight. Automatic mode allows the backlight to turn on
when the ambient light falls below a threshold level preset in
the monitor.
7) Password – a 4-digit numeric character which allows the
user to enter the programming mode when needed. The
manufacturer’s default password is “0000.”
8) Pump Speed – low or high. The factory default setting is
low, which reduces the flow rate by 30%, but increases the
battery run time by 10%, and increases the lifetime of the
LEL sensor. Setting the pump speed to high (see Section
4.7), offers quicker response time. A high pump speed is
required to measure reactive and slowly-responding gases
such as Cl
2
, PH
3
, NH
3
, and HCN.
9) Averaging Method – (TWA) Time Weighted Average
(default) or (AVG) a running Average. These two averaging
methods are alternate ways to evaluate gas exposure over
time.
10) Change Display Language – allows the user to choose
either Spanish or English screen text.
11) Temperature Units – allows the user to display the
temperature in either degrees Centigrade or Fahrenheit.
12) Enable/Disable Vibrator – will activate or deactivate the
vibration alarm.