Teledyne 9060Z - Zirconium oxide flue gas oxygen analyzer - Manual (Page 46)

Model 9060Z Manual
46
4. ‘Probe 2 High Impedance’
Oxygen probe or electrode failure. The sensor has a high impedance measurement. Replace the
probe. This alarm is inhibited when the probes are less than 650°C (1200°F).
5. ‘Probe 1 TC Open Circuit’
6. ‘Probe 2 TC Open Circuit’
Probe thermocouple is open circuit. The heater in heated probes will switch off.
7. ‘Aux TC Open Circuit’
The AUX thermocouple is open circuit. If the thermocouple is not needed, select “Disabled” in
COMMISSIONING menu function #9, “Aux TC Type” or place a short circuit between terminals 7 & 8.
8. ‘Ref Air Pump Fail’
The reference air pump in the transmitter has been either unplugged or has gone open circuit
(<20mA). Replace the reference air pump.
9. ‘Ref Air Pump Overload
The reference air pump in the transmitter has stalled and is drawing in excess of 300mA. The
transmitter will attempt to restart the pump every minute for 1 second. Replace the reference air
pump.
10. ‘ADC Calibration Fail’
The analogue to digital converter has been found to fall outside the normal calibration specifications.
In this case the probe heater will automatically be turned off.
11. ‘Alarm Log Fail’
The alarm history is kept in an EEROM. This alarm will be raised if this memory device fails.
12. ‘Output 1 Failure’
13. ‘Output 2 Failure’
The digital to analogue and voltage isolator circuit has been found to fall outside the normal
calibration specifications. This check is only performed when the ‘AUTO CAL’ button is pressed. See
chapter 10.1.2.
14. ‘Heater 1 SSR Failure’
15. ‘Heater 2 SSR Failure’
One of the heater power control devices (SSR) has been found to have failed. See chapter 8.2.8,
Heater SSR fault correction.
16. ‘Heater SSR Leakage’
One of the heater power control devices (SSR) has been found to have failed but the transmitter
cannot determine which one(s) has failed.
17. ‘Probe 1 Filter Blocked’
18. ‘Probe 2 Filter Blocked’
Blocked probe filter. This test is only performed when automatic purging of the probe is selected. See
chapter 11. This alarm will not reset until the next purge cycle. The cycle can be initiated manually or
automatically.