Peripheral Equipment; Nitrogen Flushing Of The Monochromator; Inserting The Tlc/Hptlc-Plate - CAMAG TLC SCANNER 4 Instruction Manual

3.4.2 Peripheral equipment

The RS232 plug (1) for connecting the Scanner 4 to the computer
("Only for connection of IECxxxxx approved equipment") is located
on the right side of the Scanner 4 housing.
Fig. 4: RS232 connection

3.4.4 Nitrogen flushing of the monochromator

When measuring below 200nm the oxygen in the air absorbs some
UV light reducing UV light intensity and consequently sensitivity of
the measurement. To avoid this, the monochromator housing can
be flushed with nitrogen.
Proceed as follows:
• Remove the nut from the tubing nipple (Fig. 3 (3).
• Push the connecting tubing of the nitrogen supply (3x4.3mm
pneumatic tubing) through the back of the nut over.
• Push the tube over the nipple and tighten the nut manually.
• Start nitrogen flushing at least 5 minutes before measurement
starts.
Nitrogen consumption: approx. 6L/min at 0.5 bar (7 psi)

3.5 Inserting the TLC/HPTLC-plate

• Open compartment door fully!
• To move the scanning table into load position – press the LOAD
POS key.
• Place the TLC/HPTLC plate against the plate stopper with the
application position facing the rear of the instrument.
• Fix the plate with a L-shaped magnetic strip (1)
Instruction Manual, June 2018
TLC Scanner 4
(1)
Page 9