Turner Designs TD-700, Руководство по эксплуатации

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TD-700 Laboratory Fluorometer Operating Manual
Page 28
DLY XXX (units)
<ENT> -Setup & Cal
AVG XXX (units)
<ENT> -Setup & Cal
HOME Screen during
Discrete Sample Averaging
sequence
END XXX (units)
<ENT> -Setup & Cal
X. Reading Samples
A. Reading Samples
1. Fill a clean test tube or cuvette your with sample, wipe the outside dry,
and insert it into the sample adaptor in the sample chamber. Close the
lid.
2. Record the sample reading.
You have three different options for recording sample readings:
a. Discrete Sample Averaging to Printer or Computer
Discrete Sample Averaging averages the reading of a sample for
12 seconds. This feature minimizes operator guesswork when
reading samples, provides greater accuracy, and reduces error
from temperature effects. Inserting a sample and pressing <*>
from the HOME screen initiates the following sequence:
7 second delay period for the signal to stabilize
12 second averaging period
5 second display of readout
The words DLY, AVG, and END appear on the upper left of the
LCD display and alert the user to the instrument’s current
status. After the sequence is complete, the display reads
“END”, the reading will freeze for 5 seconds, and the readout will
automatically be sent to your computer or printer. The letters
“(disc.)” will appear next to the reading on the printout to indicate
that the discrete sample averaging feature was used on this
measurement.
b. Read Samples from Display
Your second option is to read samples directly from the display
without using the Discrete Sample Averaging function. Allow the
reading to stabilize, then press <D> to send the reading to a
computer or printer or write down the result.
c. Data Stream
Instantaneous readings are reported out to a printer or computer
at a preset interval. See Section X C for futher details.
3. Rinse the cuvette 3 times, preferably with the sample you wish to
measure. Repeat steps 1 through 3 until all samples are read.
Note: Do not leave highly concentrated samples in the instrument for an
extended period of time. Unstable readings may result.