Uv Source Lamp Adjustment - Teledyne T700 Operation Manual

Maintenance

8.2.3. UV SOURCE LAMP ADJUSTMENT

Make sure that the T700 is
in standby mode.
Toggle these buttons to
enter the correct
PASSWORD
Continue pressing NEXT until...
226
This procedure provides in detail the steps for adjustment of the UV source lamp in the
optical bench assembly.
REFERENCE test function value drops below 3000 mV.
1. Ensure that the calibrator is warmed-up and has been running for at least 30
minutes before proceeding.
2. Remove the cover from the calibrator.
3. Locate the optional Photometer (see Figure 3-6).
4. Locate the UV detector gain adjust pot on the photometer assembly (see Figure
8-5).
5. Perform the following procedure:
STANDBY A-CAL=0.000 LPM
<TST TST> GEN STBY SEQ
SETUP X.X
PRIMARY SETUP MENU
GAS SEQ CFG CLK PASS
SETUP X.X
SECONDARY SETUP MENU
COMM FLOW VARS
DIAG
SETUP X.X
ENTER PASSWORD
8 1 8
DIAG
SIGNAL I/O
PREV NEXT
DIAG I/O 1) CONTROL_IN_2=OFF
PREV JUMP
NEXT
DIAG
54) PHOTO_DET = 3342.2 MV
PREV NEXT
Using an insulated pot adjustment tool, Turn the UV
DETECTOR GAIN ADJUSTMENT POT until the value of
PHOTO_DET is as close as possible to 4600.0 MV.
If a minimum reading of 3500.0 mV can not be reached,
the lamp must be replaced.
6. Replace the cover on the calibrator.
Teledyne API – Model T700 Dynamic Dilution Calibrator
This procedure should be done whenever the PHOTO
SETUP
EXIT
MORE
EXIT
EXIT
ENTR
EXIT
ENTR
PRNT EXIT
PRNT EXIT
Additional adjustment can be made by physically
rotating the lamp in it‟s housing.
 To do this, slightly loosen the UV lamp
setscrew.
 Next, slowly rotate the lamp up to ¼ turn in
either direction while watching the
PHOTO_DET signal.
 Once the optimum lamp position is
determined, re-tighten the lamp
setscrew
06873E DCN7106