Teledyne Adjusting the UV Lamp Peaking the Lamp, M102E/M501 TRS, Troubleshooting & Repair

TROUBLESHOOTING & REPAIR	M102E/M501 TRS
	(Addendum to M101E Manual - P/N 04740 Rev A)

Lamp Positioning – The UV output level of the lamp is not even across the entire length of the lamp. Some portions of the lamp shine slightly more brightly than others. At the factory the position of the UV lamp is adjusted to optimize the amount of UV light shining through the UV filter/lens and into the reaction cell. Changes to the physical alignment of the lamp can affect the analyzer’s ability to accurately measure SO2. See Section 11.6.3.2 of the M101E Manual (P/N 04740 Rev A) for instructions on adjusting the lamp position.

10.5.1.1. Adjusting the UV Lamp (Peaking the Lamp)

CAUTION:

ALWAYS wear UV-Protective, Safety Glasses when working with the UV

Lamp Assembly

1.Set the analyzer display to show the signal I/O function, UVLAMP_SIGNAL (see Section 11.1.3 of the M101E Manual - P/N 04740 Rev A). UVLAMP_SIGNAL is function 35.

2.Slightly loosen the large brass thumbscrew located on the shutter housing (see Figure 10-1) so that the lamp can be moved.

3.While watching the UVLAMP_SIGNAL reading, slowly rotate the lamp or move it back and forth vertically until the UVLAMP_SIGNAL reading is at its maximum.

NOTE:

DO NOT grasp the UV lamp by its cap when changing its position (see Figure 10-1).

Always grasp the main body of the lamp.

•Ideally, the reading should be 3500mV±200mV.

•If UVLAMP_SIGNAL is lower than 600mV, replace the lamp.

•If UVLAMP_SIGNAL is greater than 3800 mV, adjust the pot on the UV reference board down until the output reads 3500 mV, and then continue to peak the lamp.

4.Finger tighten the thumbscrew.

NOTE:

DO NOT over-tighten the thumbscrew.

56 05514 Rev A1