Thermo Scientific 5028i, Инструкция по эксплуатации

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Installation
Startup
Thermo Fisher Scientific Model 5028
i
Instruction Manual 2-17
Before the power is connected, be sure that the front door power switch
is OFF and be sure to verify that the local power matches the label on
the back of the monitor station.
WARNING
The Model 5028 i is supplied with a three-wire grounded
power cord. Under no circumstances should this grounding system be
defeated.
s
Use the following procedure when starting the instrument.
1. Turn the power ON and allow 12 hours for the beta detector to
stabilize.
2. Although the instrument has been calibrated at the factory, if the
instrument has been equilibrated, temperature sensors may be
checked. (Assure that the heater is off and that the instrument is
sampling room air at a constant temperature for at least 1-2 hours
with the cover removed.)
3. After a 12-hour stabilization, the following steps should be
performed:
a. From the Main Menu, choose
Instrument Controls . Under
Instrument Controls:
i. Flow should be set to 16.67 LPM
ii. Heater Control should be set to RH with a RH threshold
of 30–60%. The RH-threshold setting should be properly
set with consideration of the local meteorological conditions
and particulate matter composition. This setting should be
compatible with local regulatory agency considerations and
should be set based on comparison with gravimetric sampling
method results at the same location as the instruments being
operated. Always refer to local regulations and approvals
prior to setting this value.
iii. Filter Tape mass limit should be set to 1,500
m
g
iv. Filter Tape–Next Time; this should have a start date
v. Filter Tape Period should be set to 8 hours for PM
2.5
and
PM
10
. U.S. EPA applications may adjust this value as high as
24 hours for PM
10
only. However, 8 hours is recommended
for consistent performance.
vi. Volumetric Conditions should be set to ACT for both Temp
and Press
vii. Lrecs and Srecs should be chosen for datalogging and all
parameters should be selected in the order they appear from
“Concentrations” to “Other Measurements”. Default Lrecs
are set to 60 minute logging with 30% memory and Srecs are
Power Connections
Startup