Metrohm 813 - Page 32

3.4 The methods
26
813 Compact Autosampler
Method 3
(detailed command sequence, see 4.2 Sequences)
Double determination of each sample, no air gap, needle remains
in sample after sample transfer.
Sequence:
1. Await first Remote signal of the instrument.
2. Get sample tube and immerse needle.
3. On receiving second Remote signal, switch on the peristaltic
pump. Sample is transferred.
4. Await third Remote signal. The instrument starts its determi-
nation.
5. Peristaltic pump is switched off after 12 s.
6. Await first Remote signal of the instrument again.
7. On receiving second Remote signal, switch on the peristaltic
pump. Sample is transferred.
8. Await third Remote signal. The starts the second determina-
tion.
9. Peristaltic pump is switched off after 12 s.
Method 4
(detailed command sequence, see 4.2 Sequences)
Triple determination of each sample, no air gap, needle remains in
sample after sample transfer.
Sequence:
1. Await first Remote signal of the instrument.
2. Get sample tube and immerse needle.
3. On receiving second Remote signal, switch on the peristaltic
pump. Sample loop is transferred.
4. Await third Remote signal. The instrument starts its determi-
nation.
5. Peristaltic pump is switched off after 12 s.
6. Await first Remote signal of the instrument again.
7. On receiving second Remote signal, switch on the peristaltic
pump. Sample is transferred.
8. Await third Remote signal. The instrument starts the second
determination.
9. Peristaltic pump is switched off after 12 s.
10. Await first Remote signal of the IC again.
11. On receiving second Remote signal, switch on the peristal-
tic pump. Sample is transferred.
12. Await third Remote signal. The instrument starts the third
determination.
13. Peristaltic pump is switched off after 12 s.