Metrohm 2.850.9110, Руководство пользователя

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2.850.9110 IC Amperometric Detector
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3.3.4 Testing the detector outlet capillary
The detector outlet capillary must be of a certain length in order to be
able to generate sufficient backpressure. The required length is dependent
on the flow that has been set.
The table 1 shows the recommended
lengths, as determined by the set flow rate.
Table 1 Recommended lengths for the detector outlet capillary
Flow rate
Capillary length ( ⌀ 0.25 mm)
2.0 mL/min 0.5–1.5 m
0.5–1.0 mL/min 1.0–2.5 m
0.25 mL/min 3 m
To check whether the detector outlet capillary is free of blockages, pro-
ceed as follows:
Testing the detector outlet capillary
Prerequisites:
￭
The detector inlet capillary is connected to the Eluent in connector.
￭
The high-pressure pump runs with a flow rate of 0.1 mL/min.
1 Connecting the detector outlet capillary
Use a pressure screw (6.2744.014) to fasten the detector outlet capil-
lary to the
Eluent to cell connector.
2 Adjusting the settings in MagIC Net
In the program part Manual of MagIC Net, increase the flow rate to
1.0 mL/min and wait until the pressure has stabilized.
3 Observe the end of the detector outlet capillary
After a while, liquid must emerge from the end of the detector outlet
capillary.
If no liquid emerges at the end of the detector outlet capillary, then
the detector outlet capillary is blocked and must either be cut back
once again or replaced.
4 Loosening the detector outlet capillary
Loosen the detector outlet capillary from the Eluent to cell connec-
tor. Wipe up emerging liquid with a cloth.