CAMBRIDGE SENSOTEC Rapidox 1100E, Instruction Manual

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Cambridge Sensotec Rapidox 1100E Oxygen Analyser Instruction Manual
Version 3.8 5 Last printed 29/08/2012 16:01:00
Oxygen Sensor Display Possibilities
O
2
Reading > 200% Display shows “O/Range”
O
2
Reading > 0% and < 200% Display shows the normal oxygen reading in % or ppm
O
2
Reading <0% Display shows “U/Range”
O
2
sensor signal has dropped below 70% of its factory
output
Display shows “Replace Sensor Soon”
O
2
sensor signal has dropped below 65% of its factory
output
Display shows “Sensor Must be Replaced”
O
2
Sensor is OK the pressure sensor is out of range
and automatic pressure correction is on.
O
2
Reading is flashing
O
2
Sensor has failed completely or become
disconnected
Display shows “No sensor or sensor Fault”
O
2
Sensor is OK but the pressure sensor is faulty and
the auto pressure correction mode is selected
Display shows “Fault” flashing.
Pressure Sensor Possibilities
Pressure Reading is >2000mbar absolute Display shows “O/Range Press.”
Pressure Reading is >-1000mbar and <2000mbar
absolute Display shows the normal pressure reading in mbar, bar,
kPa, torr or psi
Pressure Reading is <-1000mbar absolute Display shows “U/Range Press.”
Pressure sensor has failed completely or become
disconnected
Display shows “Fault Press.” With the word “Fault” flashing
Table 2: Different display possibilities depending on the sensor reading.
6.4 Pump Control
The flow rate of gas drawn into the analyser can be controlled using the menu
option 9 “Set Pump Flow”. The unit is supplied with the flow rate set to OFF. If
you wish to change the flow rate press ENT and select menu option 9. Use the UP
& DOWN arrows to change the value from OFF to 100% in 10% increments. 100%
equates to approximately 1.2 litres per minute. Once you have selected the
desired flow rate, press ENT to confirm your selection. If you do not press ENT,
the pump will revert to the previous rate when the unit exits the menu system.
Alternatively the pump can be switched on or off using the switch (10) on the rear
panel. When using the unit with a pressurised (flowing) gas source the pump can
be left switched off.
6.5 Menu Access / Passwords
The analyser has an option to set a password that will restrict access to the menus.
The password menu is disabled by default in the factory. If you wish to password
protect the analyser press ENT and scroll down to the PASSWORD option (Menu
option 9). Pressing ENT again will ask you for the default password which is
“0000”. Enter this using the UP and DOWN arrows. Once the password has been
entered successfully you can chose between ENABLE and DISABLE in the menu
using the UP and DOWN keys.
The other option is to RESET the password to a new value. The password must be
4 digits long and can be any combination of numbers from 0000-9999. Make sure
that the new password is noted down!
If the password function has been enabled then in the future each time the menu
system is accessed then the password prompt will display. After the correct