RLE GD100 - Manual (Page 9)

CTS-M17 Installation, Operation and Maintenance Manual
B84450-001-000 RG May 12, 2005 8
where --GAS-- is the selected target gas, and xxx the concentration of the
gas.
Note: The unit features a warm-up function to prevent false alarms while
the sensor is warming up. Warm-up is activated when the unit is
powered up initially. During warm-up, "----" will be shown in the
bottom line of the display in place of the gas concentration. It is not
possible to enter the menu system during warm-up. Sensor warm-up
duration is from one minute to several minutes, depending on gas
and/or sensor type.
Note: Should the concentration equal or drop below –5 %LEL, the unit will
flash "CALIBR" on display line 2 every 8 seconds.
Menu Activation: Press and hold any key for 3 seconds to enter the menu tree.
Menu Scrolling: Use the scroll buttons to scroll up and down through the menu
tree.
Data Entry Mode: Access the data entry mode by pressing S3 (Enter) while
displaying any adjustable configuration setting. This mode is indicated by an *
(asterisk) at the right of the variable, and indicates that the variable may be
changed by scrolling. Press S3 (Accept) to save result and return to menu tree.
While in data entry mode, the Up and Down keys perform an automatic key repeat
while the key is held in.
Password: The first item on entering the menu tree is a password request. The
display shows 0000, the default password is 0017. The * appears, indicating that a
number can be scrolled to the password, and then entered with S3. The password
can be changed by the user (see below).
Fault: In case of faults, the display will read FAULT and a fault code in the bottom
LCD line (see below). The analog output signal will drop to 0 mA (or 0V).
See section 3 below for more information on faults.
2.2 Configuration and Calibration
Note: The user has control of all variables, including calibration gas
concentrations, alarm settings and signal range (both 4 mA and 20
mA) assignments. It is important to note that these must be chosen
carefully with regard to calibration. Calibration is done with
potentiometers on the circuit card, not through the menu system,
therefore it is possible to perform the adjustments without the menu
system; however, the menus do offer increased display resolution,
and disabling of relay actuation. Please contact QEL customer
support for non-standard adjustments. It is advised to make one or
two adjustments at a time, unless you are very familiar with the
product. Remember to save your settings when exiting the menu
system.