Teledyne 9070 - O2 and CO2 Food package analyzer (preliminary) - Manual (Page 36)

28. CENTIGRADE/FAHRENHEIT SELECTION
Select whether displays and outputs are to be in ° Celsius or Fahrenheit
Options:
1. Celsius (Centigrade)
*
2. Fahrenheit
29. LOWER LINE DISPLAY FUNCTIONS
In the run mode the upper line on the LCD display will always read % oxygen. The lower line can be set to read one or
more of the following. Select as many as are required to be displayed by pressing the ‘ENTER’ button. Those selected
will have an asterisk displayed alongside.
Options:
1. Date to time
2. Run hours since last service
3. Date of last service
4. Oxygen Sensor mV
5. Oxygen sensor temperature
6. Oxygen sensor impedance
7. Sample oxygen ( and Carbon dioxide if fitted )
8. Ambient temperature
9. Ambient relative humidity
10. Balance gas
If options already selected are required to be deleted, select the required option and press the ‘ENTER’ button. The
asterisk will be removed.
30. CALIBRATION CHECK GAS, YES/NO
Select to use on line gas span calibration checking or not.
Options:
No Cal Gas
*
Yes
During the timed calibration check periods the transmitter outputs will be frozen and the Analyzer will alarm if
readings are not within the accuracy limits sets in set-up steps 33 and 34. If autocal is not required enter ‘NO CAL
GAS’ and the transmitter will step to set-up 30.
31. FIRST CALIBRATION CHECK
Set the time of day that best suits to start the auto cal gas check.
Range
0 to 23 hours in one hour stops, default 12 o’clock noon
32. OXYGEN CONTENT OF CAL GAS
Enter value of Cal Gas (to one decimal point).
Range:
0.1 to 20.9 % oxygen. Default setting is 8.0 % oxygen.
33. MAXIMUM ACCEPTABLE POSITIVE ERROR GAS
Set the maximum positive error above which the ‘Gas Cal Error’ alarm will be initiated after the timed period set in
set-up step 36.
Range:
0.1 to 3.0 % oxygen. The default setting is 0.5 % oxygen.
34. MAXIMUM ACCEPTABLE NEGATIVE ERROR GAS
Set the maximum negative error below which the ‘Gas Cal Error’ alarm will be initiated after the timed period set in
set-up step 36.
Range:
0.1 to 3.0 % oxygen. The default setting is 0.2 % oxygen.
Page 36 Teledyne Analytical Instruments 9070 Oxygen Analyzer