Hach BioTector B3500e, User Manual

Page: 69 / 163

Page 69
Remove the tapes, which are used to seal the ends of the supplied CO
2
filter. Fit the CO
2
filter to
the Base container and seal the Base container tightly. See figure 13 and figure 14 in Section
5.3.2 Reagent Connections for details.
_____
Connect the Acid (1.8 N Sulfuric Acid, H
2
SO
4
, containing 80 mg/l Manganese catalyst) and Base
(1.2 N Sodium Hydroxide, NaOH) containers to the BioTector’s ACID and BASE ports with 1/8”
PFA tube. ~20 liter reagents last typically 48 days. Confirm that weight fittings (which contain 70
micron filters) supplied are installed at the end of the acid and base reagent dip tubes.
_____
Confirm the sample is supplied to the analyzer from a sample chamber and are at ambient
pressure. See examples in figures 15 and 16 in Section 5.4 Sample, Drain and Exhaust
Connections for the correct positioning and setup of the BioTector sample tube in various
sampling systems. Sample chamber should be located next to the BioTector. Any increased
sample pump forward time, due to sample chamber distance from the BioTector, will affect
analysis cycle time.
_____
Referring to typical examples in figures 15 and 16 in Section 5.4 Sample, Drain and Exhaust
Connections , connect the sample to the BioTector with ¼” PFA tube. This port is labeled as
SAMPLE 1.
_____
If a BioTector SAMPLER has been supplied with the system, connect the sampler in accordance
with the drawings and instructions in the sampler user manual.
_____
Connect the SAMPLE OUT port with ¼” PFA tube to well ventilated pressure free drain. The
tubing length between the drain and the BioTector SAMPLE OUT port should be maximum 2
meters. The tube should be fitted so that it cannot freeze in cold weather. See figure 16 in Section
5.4.2 Drain and Exhaust Connections for details.
_____
Connect the BYPASS port with ¼” PFA tube to well ventilated pressure free drain. The tubing
length between the drain and the BioTector BYPASS port should be maximum 2 meters. The tube
should be fitted so that it cannot freeze in cold weather. See figure 16 in Section 5.4.2 Drain
and Exhaust Connections for details.
_____
Connect ¼” PFA tube to the MANUAL or CALIBRATION ports. Remove all tapes placed around
the fittings for shipment. The tubing length between the manual grab sample intake point or
calibration standard solution and the BioTector MANUAL/CALIBRATION ports should be between
2 and 2.5 meters. The height of the manual grab sample or calibration solution should be between
100mm and 500mm below the BioTector.
_____
If the BioTector is supplied as a “purge ready” system, connect the -20°C dew point, oil, water and
dust free purge air to the ¼” Swagelok fitting located on the metal plate on the top left hand side
of the BioTector enclosure. The purge air is instrument air which is typically at 60 L/min flow, and
filtered with a 40 microns or smaller filter. The purge ready system is supplied with an air outlet
port “vent” where the purge air is discharged.
_____
2. POWER UP:
Power up the analyzer. Go to Operation, Time & Date menu and adjust the time and the date. _____
Using the Simulate menu (see Section 8.1.2 Simulate ), check the following:
Confirm that the Exhaust and Reactor Valves are working. _____
Confirm that the Sample Valve is working. _____
If installed, confirm that all other valves (e.g. multi-stream valve) are working. _____
Check the air supply pressure. The set point pressure should be 1.5 bar. When the oxygen
concentrator is running, the pressure typically cycles from 1.5 bar to 0.9 bar. Check the O2
PRESSURE SENSOR in O2-Controller Status menu. The pressure should be between 390
mbar and 400 mbar at the idle 1 l/h “Mass Flow Controller” MFC FLOW. At 60 l/h MFC
SETPOINT flow, the pressure should not be less than 320 mbar. See Section 8.1.6
Oxygen Controller Status for details.
_____