HTA HT2800T - Purge Line Connections (for Headspace and Fiber Cleaning Device)

HT2800T_en_c.doc Page 58 of 275
Proceed as follows:
1. Connect the analyzer to its connector (number 5 in Figure 29) (15 pin port) using the
interface cable provided with the mounting kit.
2. Insert the power cable inside the socket (number 2 in Figure 29). This cable is connected to
an external power supply (low voltage) (see paragraph 2.1.3 “Connection panel”).
3. Connect the external power supply to the mains power.
4. If PC connection is needed (optional):
• in case of an Ethernet connected autosampler: insert the Ethernet cable
provided with the autosampler in the port indicated with the number 4 in
Figure 29, then plug it into any Ethernet port available.
• in case of an RS232 connected autosampler: insert the serial cable provided
with the autosampler in the port indicated with the number 4 in Figure 29,
then on the PC side to any RS232C port available.
3.3.4 Purge line connections (for Headspace and Fiber Cleaning Device)
To flush the syringe between injections, a suitable gas source (e.g. Nitrogen) must be connected
to the gas inlet 1/8” located on the rear of the autosampler (number 8 in Figure 29) The inlet gas
has to be regulated by using a pressure regulator (only provided as an optional accessory, see
paragraph 3.6.1 “External pressure regulator installation (only for Headspace and SPME
mode)“) at 1 bar maximum (15psi or 100kPa). The inlet gas should be at room temperature.
Purge gas must be 99.9995% pure. See the table below for the acceptable purge gas. It is
recommended that high quality traps are used in order to remove hydrocarbons, water and
oxygen.
Warning
During Headspace and SPME operation, the syringe is cleaned after each injection with inert,
clean gas (e.g. N
2
or He). Therefore a gas supply line must be available close to the