Thermo 15i, Инструкция по эксплуатации

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Calibration
HI and LO Multi-Point Calibration
Thermo Fisher Scientific Model 15 i Instruction Manual 4-7
manifold to ensure that no ambient air is pulled into the manifold vent.
The exact HCl concentration is calculated from:
)
F
+
F
(
)
F
x ] [HCl (
=
]
[HCl
HCl D
HCl
STD
OUT
Where:
[HCl]
OUT
= diluted HCl concentration at the output manifold, ppm
[HCl]
STD
= concentration of the undiluted HCl standard, ppm
F
HCl
= flow rate of HCl standard corrected to 25 °C and 760 mmHg, LPM
F
D
= flow rate of dilution air corrected to 25 °C and 760 mmHg, LPM
2. Allow the instrument to sample this HCl concentration standard until
a stable response is obtained.
3. From the Main Menu select Service Mode > Lo Multi-Point Cal > Cal
Point 1 .
4. Use to move the cursor and to increment or
decrement the digit values until they match the concentration being
introduced to the instrument. Press
.
The instrument will perform a series of calculations and save the new
parameters.
5. Press to back up a step in the Service Mode menu.
6. Repeat Step 1 for a 50% concentration of the upper range.
7. Select Cal Point 2.
8. Use to move the cursor and to increment or
decrement the digit values until they match the concentration being
introduced to the instrument. Press
.
The instrument will perform a series of calculations and save the new
parameters.
9. Press to back up a step in the Service Mode menu.