COMMISSIONING
3.8 CONNECTING POWER - COLD START
Before commissioning the transmitter, read the two Caution paragraphs at the front of this manual.
Check that the mains supply voltage switch is in the correct place for the supply voltage. The mains voltage selector
switch is located on the terminal circuit board, beside the power transformer.
To perform a ‘COLD START’, remove LK1 link, labelled ‘COLD START’ on the 1630-1 PCB (under the shield).
Turn the power on. The Analyzer will load the factory default settings for all of the set-up functions including the
calibration voltages. Replace the cold start link when the message ‘Replace c/s Link’ appears on the LCD.
After a ‘COLD START’, it is advisable to set all new variables in the set-up mode, including calibration voltages, time
and date, however the instrument will be fully operational without any further adjustments.
3.9 CONNECTING POWER - WARM START
A ‘WARM START will be performed when the power is applied with the COLD START link in place. All the set-up
function will have been retained as they were when the power was last turned off in the memory module M1 on the
1630-1 PCB.
3.10 COMMISSIONING - SET-UP MODE
Press the SET-UP button to select the set-up mode. Most of the default settings of the functions will be correct, or will
have been pre-set at the factory. Refer to Section 5.5 for more details.
Check the following set-up functions suit your particular use -
1 to 5 Date /time
6 to 9 Reference voltages
11 & 12 Oxygen sensor calibration
20 to 22 Output channel #1
23 to 25 Output channel #2
30 Auto gas calibration checking
39 to 51 Alarm set up
3.11 RUN MODE
When the Analyzer is turned on it will go to RUN mode. The SET-UP/RUN button will toggle between the two
modes. The upper line of the display will now read the oxygen or oxygen and carbon dioxide if the optional carbon
dioxide module has been installed in the front section of the cabinet. If the oxygen sensor temperature is not above
650°C (1200°F), a “Sensor Low Temperature” message be flashed on the lower line. The sensor temperature can be
checked on the lower line of the display.
3.12 CHECKING THE ALARMS
If any alarms are present the alarm LED will be lit, either flashing or steady. To interpret the alarms, press the alarm
button until all alarm functions have been displayed. Rectify the cause of each alarm until no further alarms appear on
the display. For details on the operation of the alarm button and the alarm functions refer to Section 4.
3.13 THE OXYGEN SENSOR
The zirconia oxygen sensor provides an absolute measurement of oxygen partial pressure. There are no calibration
adjustments, apart from ‘SENSOR OFFSET’, which can be selected to be trimmed automatically (See Section 5.5.10 &
5.5.11). The sensor EMF for a span gas is either correct or the sensor is faulty.
To check that the sensor is functioning correctly, firstly check that the high sensor impedance alarm is not activated by
pressing the alarm button if the alarm LED is flashing. The display would show ‘SENSOR FAIL’. The actual
impedance can be displayed on the lower line. It should be less than 3000Ω.
Once it has been established that the sensor impedance is normal, the sensor offset may be tested and set. Refer to
Section 5.5.10 & 5.5.11. A normal flow of air must be in the gas sample line when testing sensor offset.
3.14 SENSOR CALIBRATION – OXYGEN SENSOR
Page 20 Teledyne Analytical Instruments 9070 Oxygen Analyzer
