Box Temperature; Sample Temperature; Uv Lamp Temperature; Izs Ozone Generator Temperature (Optional) - Teledyne T400 User Manual

5.7.8.1 BOX TEMPERATURE

The box temperature sensor is mounted to the motherboard and cannot be disconnected to
check its resistance. Rather check the BOX TEMP signal using the signal voltage in the
Utilities>Diagnostics>Analog Inputs menu (Section 5.7.3). This parameter will vary
with ambient temperature, but at ~30
be ~1450 mV.

5.7.8.2 SAMPLE TEMPERATURE

Sample Temperature should read approximately 5.0°C higher than the box temperature.

5.7.8.3 UV LAMP TEMPERATURE

There are three possible causes for the UV Lamp temperature to have failed.
The UV Lamp heater has failed.
•
• Check the resistance between pins 5 and 6 on the six-pin connector adjacent to the
• It should be approximately 30 Ohms.
Assuming that the I
•
Board, the FET Driver on the Relay Board may have failed.
• Using the PHOTO_LAMP_HEATER parameter under the SIGNAL I/O function of
• Check the DC voltage present between pins 1 and 2 on J13 of the Relay Board.
• If the FET Driver has failed, there will be no change in the voltage across pins 1 and
• If the FET Driver Q2 checks out OK, the thermistor temperature sensor in the lamp
assembly may have failed.
• Unplug the connector to the UV Lamp Heater/Thermistor PCB, and measure the
The resistance near the 58

5.7.8.4 IZS OZONE GENERATOR TEMPERATURE (OPTIONAL)

There are three possible causes for the Ozone Generator temperature to have failed.
The O
•
• Check the resistance between pins 5 and 6 on the six-pin connector adjacent to the
• It should be approximately 5 Ohms.
124
UV Lamp on the Optical Bench.
C bus is working and that there is no other failure with the Relay
2
the DIAG menu, as described above, turn on and off the UV Lamp Heater (D15 on
the relay board should illuminate as the heater is turned on).
2.
resistance of the thermistor between pins 5 and 6 of the six-pin connector.
o C set point is ~8.1k ohms.
Gen heater has failed.
3
UV Lamp on the O Generator.
3
Teledyne API – Model T400 O
C (6-7° above room temperature) the signal should
o
Analyzer
3
083730400A DCN8130