Lamp Voltage Check; Lamp Voltage Adjustment - Thermo Scientific 43iQTL Instruction Manual

Trace level sulfur dioxide analyzer
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Lamp Voltage
Check
Lamp Voltage
Adjustment
43iQTL Instruction Manual
The instrument is equipped with a lamp voltage control circuit, which
automatically corrects for degradation of the flash lamp. However, after
several years of use, the lamp may have degraded to the point that is being
driven with the maximum voltage that the power supply can deliver.
There are two methods available that allows the operator to check the lamp
voltage. The first is via the Home Screen>Settings>Measurements
Settings>Advanced Measurement Settings>Optical Bench
Settings>Continue to Detector Gain Settings Screen. The current Lamp
Voltage and Lamp Intensity are displayed.
The second method is via the Home Screen>Settings>Health Check>Status
and Alarms>SO2 Bench screen. The current Lamp Voltage and Lamp
Intensity are displayed along with the upper and lower alarm limits.
For detailed information about this screen, refer to the "Operation"
chapter. For more information about replacing the lamp or adjusting the
lamp voltage control circuit, see the "Servicing" chapter.
The auto calibration of the detector will automatically adjust the lamp
voltage to 800 volts (±5 Volts). This is done so by adjusting the gain on the
detector to optimize the illumination of the lamp.
Use the following procedure to adjust the lamp voltage.
1. From the Home screen choose Settings>Measurement
Settings>Advanced Measurement Settings>Optical Bench
Settings>Continue To Detector Gain Settings Screen.
2. Under the Detector Gain – Auto Cal, Press "Start" to initiate the auto
calibration sequence.
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